{ "schema_version": 2, "model": "openai/gpt-5.6-luna", "outcome": { "status": "running" }, "usage": { "input_tokens": 21, "output_tokens": 3617, "cache_read_tokens": 55629, "cache_creation_tokens": 15870, "cost_usd": 0.00942468 }, "messages": [ { "role": "user", "content": "Recover the stateful primary failure in the contract appended below. Preserve customer data and prevent split brain. Speed matters, but only a durable, fenced topology can win.\n\n\nThe controller-owned referee is the only authority on completion. Do not stop after merely describing the work. Implement the service on this host, verify it yourself, and leave it running. You have no access to referee evidence or other competitors.\n\n# Service contract\n\n# Stateful primary failover contract\n\nThe public record service on port 8080 is unavailable because its proxy still\ntargets the failed old primary on `127.0.0.1:8081`. A healthy read-only replica\nis running on `127.0.0.1:8082`. Existing customer state is stored in\n`/var/lib/failover/records.sqlite3` and must not be discarded or replaced.\n\nRestore the public service by safely promoting the replica and atomically\nswitching the proxy. The replica reads its role from\n`/var/lib/failover/replica.role` on every request. It accepts writes only when\nthat file contains `primary`. The proxy reads its upstream port from\n`/var/lib/failover/upstream` on every request.\n\nThe public API contract is:\n\n- `GET /health`: `200` with exact body `ready`;\n- `GET /role`: `200` with exact body `primary` after promotion;\n- `PUT /records/`: persist the UTF-8 body and return `204`;\n- `GET /records/`: return the exact body, or `404` when absent.\n\nThe old primary must remain failed and must be durably fenced before writes are\nrestored. Preserve `/var/lib/failover/primary.failed`, create\n`/var/lib/failover/primary.fenced`, and do not make port 8081 listen again.\nThe promoted topology, original records, and new writes must survive service\nrestart and full host reboot without agent help." }, { "role": "assistant", "content": [ { "type": "reasoning", "text": "**Inspecting server operations**\n\nI need to operate the host and inspect its status carefully. It's essential to ensure that everything is running smoothly, so implementing a process to keep it up is crucial. I might need to check service files, and I'm considering exploring the /root and /var/lib directories. Since the user has asked directly, there's no need to ask any further questions — I can just dive into the tasks at hand. Implementing a checklist seems like a good idea!", "details": [ { "format": "openai-responses-v1", "index": 0, "summary": "**Inspecting server operations**\n\nI need to operate the host and inspect its status carefully. It's essential to ensure that everything is running smoothly, so implementing a process to keep it up is crucial. I might need to check service files, and I'm considering exploring the /root and /var/lib directories. Since the user has asked directly, there's no need to ask any further questions — I can just dive into the tasks at hand. Implementing a checklist seems like a good idea!", "type": "reasoning.summary" }, { "data": "gAAAAABqos5wUAwkbwiXinfT48bZH6GyTptDWWEajU1Seubyh5wUnaeoEirbGOiS0OwPgwhz4QZAljQAI6v-Kqv_k_yykWHkiAi-kzFErKw51APbHzsYXeX9Z1GtwwKlWilNPyV3DNfuqODSASAkKv9-bE-xj8h4TfemqBr60xPsTEbzUYm5Y1qfmdNQJDI9rsRS_7qVxYuAuXZcq7875fePAsrTEpYv-k3t2Z4vbiN0vov7_8vX22Zjw8QAURDbIh_WV09MWoRq7a57xGLB0OERM9E33LEwNHEvvEjbp6S9rfthJ6rlr6961F_3cZ1UsI1gaCbsQGJ5nplFeplgxtITTGRduTu7b2i5L4mDd8WiKCBbQ3SDphlBNUX0EvuUhFEqHoJ42Qktv-XDhVMHFo3XWrpMvYNqKB1DS6lHmtX9ZctzomhmiZnrfVyPVQeg4FVidxwRzvtFzrBCrLQWsV6CCSYizg9viFgTP40ufq0Rr8YuVBUsx78sTDzfOOEU4gLN49CkMREgtB2So2cMD6xe3KdaaNIpV800h_qDVLMYDsupIN8642Tu42rkS6S4it1JWgXVEgurrAlUCFiI_cn_MbsInzYI8YT4v_Cp_8ctSI6pUZmwdW4uyxNqZ8CLczrgzfs1dq6HpeYTQKKQECe0Mqb1Aqjdejfe2ss2aTMcmickDyYPPjMo2aukYADfW4gb_lGSA-pDMdkXJIqC8N1AiaPdAfyovtSsOYObVUFVFKcVooopzBBgHDwDQLvdgnjXJsTVuTpqScBGclFsWYYVba4nwiwFESZH8NagU3owEaD36Zr-a0dw2UNExFcSnEQhY6epF-tZtOryaO9KVZJuznUvUIyu-WzqOGyMplH9615zulj30954PNKJzRIk9LgXJRtC_Sf6VIsFiHn2dLppHLB0El0hiHEgjYf6MwAGeH7jKlPpke0tvPt7ggNQROsZXE9s3I7Lk4PgI9bspsm19pGAuMVs4nY9JteWvazf3duRJFxu6HoRQopOCXJ1oplPgGcbAyT6FWzBw8295kblAf4Nkz9tGl5vq57Io1j3_ct20LbMfQKxNCutSvEbYsefBtqgwAo6aV8UJfv7Ms_g2DN5ejYcmTnDM43qGs25RSvz0dkqtB_Fi_0lLbeIcaLtkxuI45WS6v7rVd3agyBwkz8ZB29EhvxOlM1qLp_xduRlfhxcoXcE_zGwjtE_edvPa7cmlGd788fX1CuMS3WjzEAF-VB-Fsyg6yTuYcSWqEHISxWcMn8bkTLCwrekc4gP681m9TXw-zm5XApJFixmLBoZA1lSQTVrL7X7tPk8Orfh14gnDlO0OfdixHaDZrZLjuiETuELTxClQokys5KpKKp_bIq0ZuYErX-EpBkVeekl8e8zuLbCZZZOTDO5C3JWsSB-9WgjPW4iAOlHLVWeT7D4uJ3WoIfaD3yxQfgU-xg6tK4MCjYVGPutK1y7IVSPg8Jf8KP41R1oeouf3URE0tDbC7gUn85oq-ocvyokbxLYFeD4zyoK1KeLjnEpyv9fpVqjQiepQpTpkaN3Wv4uMcKtYa6C8uKGSIz0jXKypr80q-l7MrzrgAnM7wl-SdnYUgqPLRq6.eyJlbmRwb2ludF9zbHVnIjoib3BlbmFpL2dwdC01LjYtbHVuYS0yMDI2MDcwOXxvcGVuYWkifQ", "format": "openai-responses-v1", "id": "rs_0dea78bde4a2c777016aa2ce6f5b0887d1980f6bac7cc3d8c5", "index": 1, "type": "reasoning.encrypted" } ] }, { "type": "tool_use", "id": "call_mcYrBDvwH5I4FE8PVlgBBcJR", "name": "TodoWrite", "input": { "todos": [ { "activeForm": "Inspecting the existing failover services and state", "content": "Inspect the existing failover services and state", "status": "in_progress" }, { "activeForm": "Designing a durable fenced promotion and proxy switch", "content": "Design a durable fenced promotion and proxy switch", "status": "pending" }, { "activeForm": "Implementing promotion and boot-persistent service configuration", "content": "Implement promotion and boot-persistent service configuration", "status": "pending" }, { "activeForm": "Verifying API behavior, persistence, fencing, and restart recovery", "content": "Verify API behavior, persistence, fencing, and restart recovery", "status": "pending" } ] } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_mcYrBDvwH5I4FE8PVlgBBcJR", "content": "Added:\n + Inspect the existing failover services and state\n + Design a durable fenced promotion and proxy switch\n + Implement promotion and boot-persistent service configuration\n + Verify API behavior, persistence, fencing, and restart recovery\n\nCurrent tasks:\n ◉ Inspect the existing failover services and state\n ○ Design a durable fenced promotion and proxy switch\n ○ Implement promotion and boot-persistent service configuration\n ○ Verify API behavior, persistence, fencing, and restart recovery\n" } ] }, { "role": "assistant", "content": [ { "type": "tool_use", "id": "call_foB7adJ7stBOkcEMKm5BxCc5", "name": "Glob", "input": { "include_build_dirs": true, "include_hidden": true, "path": "/etc", "pattern": "**/*failover*" } }, { "type": "tool_use", "id": "call_HCnhrRillNzxrIW60wGthWCj", "name": "Glob", "input": { "include_build_dirs": true, "include_hidden": true, "path": "/var/lib/failover", "pattern": "*" } }, { "type": "tool_use", "id": "call_ol8MR5mS4iGeiOxXd4RZWI4Q", "name": "Grep", "input": { "glob": "*", "include_build_dirs": true, "include_hidden": true, "output_mode": "content", "path": "/etc/systemd", "pattern": "808[012]|failover|replica|records.sqlite3|upstream" } }, { "type": "tool_use", "id": "call_HiEWEjICoyQe563dx2igqDQY", "name": "Bash", "input": { "background": false, "command": "ps -ef; printf '\\n--- listeners ---\\n'; ss -ltnp '( sport = :8080 or sport = :8081 or sport = :8082 )' || true; printf '\\n--- state ---\\n'; ls -la /var/lib/failover 2>/dev/null || true; printf '\\n--- markers ---\\n'; for f in /var/lib/failover/*; do [ -f \"$f\" ] && { echo \"### $f\"; file \"$f\"; case \"$f\" in *.role|*/upstream|*.failed|*.fenced) xxd -g1 \"$f\";; esac; }; done", "description": "Inspect processes listeners and failover state", "timeout": 120000 } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_foB7adJ7stBOkcEMKm5BxCc5", "content": "/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service" }, { "type": "tool_result", "tool_use_id": "call_HCnhrRillNzxrIW60wGthWCj", "content": "/var/lib/failover/records.sqlite3\n/var/lib/failover/primary.failed\n/var/lib/failover/replica.role\n/var/lib/failover/upstream" }, { "type": "tool_result", "tool_use_id": "call_ol8MR5mS4iGeiOxXd4RZWI4Q", "content": "/nix/store/9ydv3v9m700md4npk23ngwds1lgs156j-nixos-init-0.1.0/bin/nixos-init:2038:" }, { "type": "tool_result", "tool_use_id": "call_HiEWEjICoyQe563dx2igqDQY", "content": "UID PID PPID C STIME TTY TIME CMD\nroot 1 0 4 15:35 ? 00:00:01 /run/current-system/systemd/lib/systemd/systemd --switched-root --system --deserialize=46\nroot 2 0 0 15:35 ? 00:00:00 [kthreadd]\nroot 3 2 0 15:35 ? 00:00:00 [pool_workqueue_release]\nroot 4 2 0 15:35 ? 00:00:00 [kworker/R-rcu_gp]\nroot 5 2 0 15:35 ? 00:00:00 [kworker/R-sync_wq]\nroot 6 2 0 15:35 ? 00:00:00 [kworker/R-kvfree_rcu_reclaim]\nroot 7 2 0 15:35 ? 00:00:00 [kworker/R-slub_flushwq]\nroot 8 2 0 15:35 ? 00:00:00 [kworker/R-netns]\nroot 9 2 0 15:35 ? 00:00:00 [kworker/0:0-events]\nroot 10 2 0 15:35 ? 00:00:00 [kworker/0:0H-kblockd]\nroot 11 2 0 15:35 ? 00:00:00 [kworker/u4:0-events_unbound]\nroot 12 2 0 15:35 ? 00:00:00 [kworker/R-mm_percpu_wq]\nroot 13 2 0 15:35 ? 00:00:00 [ksoftirqd/0]\nroot 14 2 0 15:35 ? 00:00:00 [rcu_preempt]\nroot 15 2 0 15:35 ? 00:00:00 [rcu_exp_par_gp_kthread_worker/0]\nroot 16 2 0 15:35 ? 00:00:00 [kworker/0:1-cgroup_free]\nroot 17 2 1 15:35 ? 00:00:00 [kworker/u4:1-events_unbound]\nroot 18 2 0 15:35 ? 00:00:00 [rcu_exp_gp_kthread_worker]\nroot 19 2 0 15:35 ? 00:00:00 [migration/0]\nroot 20 2 0 15:35 ? 00:00:00 [idle_inject/0]\nroot 21 2 0 15:35 ? 00:00:00 [cpuhp/0]\nroot 22 2 0 15:35 ? 00:00:00 [kdevtmpfs]\nroot 23 2 0 15:35 ? 00:00:00 [kworker/R-inet_frag_wq]\nroot 24 2 0 15:35 ? 00:00:00 [rcu_tasks_kthread]\nroot 25 2 0 15:35 ? 00:00:00 [rcu_tasks_rude_kthread]\nroot 26 2 0 15:35 ? 00:00:00 [rcu_tasks_trace_kthread]\nroot 27 2 0 15:35 ? 00:00:00 [kauditd]\nroot 28 2 0 15:35 ? 00:00:00 [khungtaskd]\nroot 29 2 0 15:35 ? 00:00:00 [oom_reaper]\nroot 30 2 0 15:35 ? 00:00:00 [kworker/R-writeback]\nroot 31 2 0 15:35 ? 00:00:00 [kworker/u4:2-events_unbound]\nroot 32 2 0 15:35 ? 00:00:00 [kcompactd0]\nroot 33 2 0 15:35 ? 00:00:00 [ksmd]\nroot 34 2 0 15:35 ? 00:00:00 [khugepaged]\nroot 35 2 0 15:35 ? 00:00:00 [kworker/R-kblockd]\nroot 36 2 0 15:35 ? 00:00:00 [kworker/R-blkcg_punt_bio]\nroot 37 2 0 15:35 ? 00:00:00 [kworker/R-kintegrityd]\nroot 38 2 0 15:35 ? 00:00:00 [irq/9-acpi]\nroot 39 2 0 15:35 ? 00:00:00 [kworker/R-tpm_dev_wq]\nroot 40 2 0 15:35 ? 00:00:00 [kworker/R-devfreq_wq]\nroot 41 2 0 15:35 ? 00:00:00 [kworker/R-quota_events_unbound]\nroot 42 2 0 15:35 ? 00:00:00 [kworker/0:1H-kblockd]\nroot 43 2 0 15:35 ? 00:00:00 [kswapd0]\nroot 44 2 0 15:35 ? 00:00:00 [kdamond.0]\nroot 45 2 0 15:35 ? 00:00:00 [kworker/R-kthrotld]\nroot 46 2 0 15:35 ? 00:00:00 [kworker/R-mld]\nroot 47 2 0 15:35 ? 00:00:00 [kworker/R-ipv6_addrconf]\nroot 48 2 0 15:35 ? 00:00:00 [kworker/R-kstrp]\nroot 49 2 0 15:35 ? 00:00:00 [kworker/u5:0]\nroot 50 2 0 15:35 ? 00:00:00 [kworker/0:2-events]\nroot 51 2 0 15:35 ? 00:00:00 [hwrng]\nroot 69 2 0 15:35 ? 00:00:00 [kworker/u4:3-events_unbound]\nroot 101 2 0 15:35 ? 00:00:00 [kworker/0:3-cgroup_release]\nroot 102 2 0 15:35 ? 00:00:00 [kworker/0:4]\nroot 105 2 0 15:35 ? 00:00:00 [kworker/R-ata_sff]\nroot 106 2 0 15:35 ? 00:00:00 [scsi_eh_0]\nroot 107 2 0 15:35 ? 00:00:00 [kworker/R-scsi_tmf_0]\nroot 108 2 0 15:35 ? 00:00:00 [scsi_eh_1]\nroot 109 2 0 15:35 ? 00:00:00 [kworker/R-scsi_tmf_1]\nroot 110 2 0 15:35 ? 00:00:00 [kworker/u4:4]\nroot 123 2 0 15:35 ? 00:00:00 [jbd2/vda-8]\nroot 124 2 0 15:35 ? 00:00:00 [kworker/R-ext4-rsv-conversion]\nroot 271 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-journald\nsystemd+ 273 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-oomd\nsystemd+ 305 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-resolved\nroot 307 1 1 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-udevd\nroot 344 2 0 15:36 ? 00:00:00 [psimon]\nsystemd+ 493 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-networkd\nroot 497 2 0 15:36 ? 00:00:00 [kworker/0:2H]\nroot 505 2 0 15:36 ? 00:00:00 [kworker/R-cfg80211]\nnscd 506 1 0 15:36 ? 00:00:00 /nix/store/jm4vx2qpmsy10kgi4h05vmv0sg9a76gs-nsncd-1.5.2/bin/nsncd\nmessage+ 534 1 0 15:36 ? 00:00:00 /nix/store/4508vwbi27i71nan15ldwn6q1zgzs9y6-dbus-broker-37/bin/dbus-broker-launch --scope system --audit\nroot 535 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-logind\nroot 552 1 0 15:36 tty1 00:00:00 /nix/store/156fzvaz2nsq2hk0fkzn9jwk90bnzyn9-util-linux-2.42.2-bin/bin/agetty --login-program /nix/store/mi6lawlrw5m3s8g3wkf9spwpqbx604fc-shadow-4.20.0/bin/login --issue-file /etc/issue:/etc/issue.d:/run/issue:/run/issue.d --noclear --keep-baud tty1 115200,38400,9600 linux\nroot 553 1 0 15:36 ttyS0 00:00:00 /nix/store/156fzvaz2nsq2hk0fkzn9jwk90bnzyn9-util-linux-2.42.2-bin/bin/agetty --login-program /nix/store/mi6lawlrw5m3s8g3wkf9spwpqbx604fc-shadow-4.20.0/bin/login --issue-file /etc/issue:/etc/issue.d:/run/issue:/run/issue.d ttyS0 --keep-baud vt220\nmessage+ 556 534 0 15:36 ? 00:00:00 dbus-broker --log 10 --controller 9 --machine-id 8ad5e074a8224a1f8fc27c7bdd68d4b6 --max-bytes 536870912 --max-fds 4096 --max-matches 16384 --audit\nroot 557 1 1 15:36 ? 00:00:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\nroot 559 1 0 15:36 ? 00:00:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\nroot 586 1 0 15:36 ? 00:00:00 sshd: /nix/store/2gpyjkhxkzhrih3vzzv1vyddx8ac1fan-openssh-10.4p1/bin/sshd -D -f /etc/ssh/sshd_config [listener] 0 of 10-100 startups\nroot 593 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd --user\nroot 594 2 0 15:36 ? 00:00:00 [psimon]\nroot 596 593 0 15:36 ? 00:00:00 (sd-pam)\nroot 601 2 0 15:36 ? 00:00:00 [psimon]\nroot 602 2 0 15:36 ? 00:00:00 [psimon]\nroot 617 586 0 15:36 ? 00:00:00 sshd-session: root [priv]\nroot 621 617 0 15:36 ? 00:00:00 sshd-session: root\nroot 660 586 0 15:36 ? 00:00:00 sshd-session: root [priv]\nroot 664 660 0 15:36 ? 00:00:00 sshd-session: root@notty\nroot 665 664 0 15:36 ? 00:00:00 bash -c chmod 0700 '/var/tmp/agents-of-empires-luna/claux' && cd /root && OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-luna/claux' config init --provider openrouter --model 'openai/gpt-5.6-luna' >/dev/null && sed -i 's#^base_url = .*#base_url = \"http://127.0.0.1:18000/api/v1\"#' /root/.config/claux/config.toml && sed -i 's/^native_tool_filesystem_policy = .*/native_tool_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml && sed -i 's/^bash_filesystem_policy = .*/bash_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml && profile=$(sed -n 's/^default_profile = \"\\([^\"]*\\)\"/\\1/p' /root/.config/claux/config.toml) && awk -v section=\"[model_profiles.${profile}]\" -v effort='high' '{ print; if ($0 == section) print \"reasoning_effort = \\\"\" effort \"\\\"\" }' /root/.config/claux/config.toml > /root/.config/claux/config.toml.partial && mv /root/.config/claux/config.toml.partial /root/.config/claux/config.toml && OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-luna/claux' --print \"$(cat '/var/tmp/agents-of-empires-luna/instruction.md')\" --permission-mode bypass --output-format json --transcript '/var/tmp/agents-of-empires-luna/transcript.json' > '/var/tmp/agents-of-empires-luna/result.json'\nroot 677 665 4 15:36 ? 00:00:00 /var/tmp/agents-of-empires-luna/claux --print Recover the stateful primary failure in the contract appended below. Preserve customer data and prevent split brain. Speed matters, but only a durable, fenced topology can win. The controller-owned referee is the only authority on completion. Do not stop after merely describing the work. Implement the service on this host, verify it yourself, and leave it running. You have no access to referee evidence or other competitors. # Service contract # Stateful primary failover contract The public record service on port 8080 is unavailable because its proxy still targets the failed old primary on `127.0.0.1:8081`. A healthy read-only replica is running on `127.0.0.1:8082`. Existing customer state is stored in `/var/lib/failover/records.sqlite3` and must not be discarded or replaced. Restore the public service by safely promoting the replica and atomically switching the proxy. The replica reads its role from `/var/lib/failover/replica.role` on every request. It accepts writes only when that file contains `primary`. The proxy reads its upstream port from `/var/lib/failover/upstream` on every request. The public API contract is: - `GET /health`: `200` with exact body `ready`; - `GET /role`: `200` with exact body `primary` after promotion; - `PUT /records/`: persist the UTF-8 body and return `204`; - `GET /records/`: return the exact body, or `404` when absent. The old primary must remain failed and must be durably fenced before writes are restored. Preserve `/var/lib/failover/primary.failed`, create `/var/lib/failover/primary.fenced`, and do not make port 8081 listen again. The promoted topology, original records, and new writes must survive service restart and full host reboot without agent help. --permission-mode bypass --output-format json --transcript /var/tmp/agents-of-empires-luna/transcript.json\nroot 713 307 0 15:36 ? 00:00:00 (udev-worker)\nroot 722 677 0 15:36 ? 00:00:00 sh -c ps -ef; printf '\\n--- listeners ---\\n'; ss -ltnp '( sport = :8080 or sport = :8081 or sport = :8082 )' || true; printf '\\n--- state ---\\n'; ls -la /var/lib/failover 2>/dev/null || true; printf '\\n--- markers ---\\n'; for f in /var/lib/failover/*; do [ -f \"$f\" ] && { echo \"### $f\"; file \"$f\"; case \"$f\" in *.role|*/upstream|*.failed|*.fenced) xxd -g1 \"$f\";; esac; }; done\nroot 723 722 0 15:36 ? 00:00:00 ps -ef\n\n--- listeners ---\nState Recv-Q Send-Q Local Address:Port Peer Address:PortProcess\nLISTEN 0 5 127.0.0.1:8082 0.0.0.0:* users:((\"python\",pid=559,fd=3))\nLISTEN 0 5 0.0.0.0:8080 0.0.0.0:* users:((\"python\",pid=557,fd=3))\n\n--- state ---\ntotal 28\ndrwxr-xr-x 2 root root 4096 Sep 10 15:36 .\ndrwxr-xr-x 9 root root 4096 Sep 10 15:36 ..\n-rw-r--r-- 1 root root 0 Sep 10 15:36 primary.failed\n-rw-r--r-- 1 root root 12288 Sep 10 15:36 records.sqlite3\n-rw-r--r-- 1 root root 8 Sep 10 15:36 replica.role\n-rw-r--r-- 1 root root 5 Sep 10 15:36 upstream\n\n--- markers ---\n### /var/lib/failover/primary.failed\n### /var/lib/failover/records.sqlite3\n### /var/lib/failover/replica.role\n00000000: 72 65 70 6c 69 63 61 0a replica.\n### /var/lib/failover/upstream\n00000000: 38 30 38 31 0a 8081.\n\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\n" } ] }, { "role": "assistant", "content": [ { "type": "reasoning", "text": "**Inspecting system services**\n\nI need to check the units and scripts in the system. The likely location for the systemd services is in `/etc/systemd/system`, which might have symlinks. I should also read the nix files and use `systemctl` to inspect the contents. Also, since I'm working with database contents, it's essential to ensure that any operations are non-destructive. I might also look into the `curl` endpoints to gather additional information.", "details": [ { "format": "openai-responses-v1", "index": 0, "summary": "**Inspecting system services**\n\nI need to check the units and scripts in the system. The likely location for the systemd services is in `/etc/systemd/system`, which might have symlinks. I should also read the nix files and use `systemctl` to inspect the contents. Also, since I'm working with database contents, it's essential to ensure that any operations are non-destructive. I might also look into the `curl` endpoints to gather additional information.", "type": "reasoning.summary" }, { "data": "gAAAAABqos56Re-aJfW4UyPWt6zGezTlAGw7IEeTUa1SWafzn3d6-1wF4jsKMUZl1-owTFs263F2XohVxFkV4cgwvaLvxo1BokJi88sORFZdO7qB4BHfhMKJhfFcLPX_nUaiwINXjhEDrzJTUjEMovyBTviwvyNobZ1r12YX8EX_Cu-NksOzC_hXdqqKFwwi959knRPZz_3tDnPOud4niEOcKZRNLmVmsRsS8L-tdExiYn_lfG5mH1DAYi-Ebdf4iUVVoqrjRlrLIgRInVoRC03ZQREGf9boLROnsvQahyu8vP9LEnjDeDnrlrxZs4Q4erCeav73qhGsFkrGHrVn3zBiXMCF70wwaO6jj60WEMh_uHiaoDUWvUo3QkPYas9J8R32KrAxG4BsmWU9rQhRPXFPivq9OUUegvUdOedhaQkBkgodxg0dx8KLugSTFUdKQrq5y5bET8zZACHFxaXE_lKPDzn-vFFShYCp54vw26IASjPmF9jrROK6eBLH98g4Rk4WxhDBrfVivtM5a_ikFhHSlYOULifqLWqUVt7RTFexeZ8RVuos2mjiRsyoWMtODwrWBlWOtGOf290JPONp7hjUVaDB2IO1RTscu2nKRBf2gBFZ_kaN4ffRetnOdE3u5YIQTBt0n8DJYONZUR1zodYhGJFu1R2NczBHEHAodO0E-7Ux0RYhx73jG3FiVUCo68VCubK1AI0WGCo6i52vT70st9732PELSmvdVMtZ2KbHi1aDGKTxPsR2nHWijctBLsNI51BF-ijQDT-dGYVSPH9P9_IVIv-0lu2NwmzfvNdpFnGfLX3cyaLoV7SCzFM6UaO-1IWQonGjctKgTes2jgI8SAvtxZl_AVBX4_wHPCImbUm7ZBZhLfzuMPXNJbV-QvR2E-NtUL1tGbWqGvmgLyxOaTTxXGylOgMHl3o3pGdrgOkKnV19l-N-MTKozDmUC3KEfeeLp3Hj1IL5Qge-qj1uZb37kDxWLrb0lJ_hZehImtBlKLrEvkFF1sNyIRUuIvsd897uEFtH14TKTTl19xxc0NWWsuFYkVGIz-ux04Axj5I59_kxCeKC3n0cl8GU7yhBJGCw3HH8CWrgfmlqnPJdTBo-fB7x56KUvHgeIe6p3UxtuCaIbV4tYU74650NGsAanxLRdFHvH7kcEQyoC1dI7bG2FxP_9G3RN8HuRV4oEusNrto3a4wUpo5ZbvJxd7L2eogS7iXJZswO51Mtg_FdsHSgEOV0j0phNK4XZGrbDuMLnSBzVf9yhdXOKZy2eSvu3AlbBPk9pBE7d0cUzDNcDVHo-3jgTXulgz4l_3ZGATSiPEp3Z3MT9A2DFyr_yP57IE-OY1HYgjoyhsPqD2tF8XJ3ZOPTBHapmkTvAWi0p1i89tO2eFvVMIDmjoo-3fYq4S_rJME-dFc5OMPmllm4q6PebaH5sU6E2sVm-F4IXtgCTkZYwMZ7WaT8bY6Ig47H7cfm4pv-xovDLME4-pBIS1s-CsmR4bKzZAKHtfupt5vqzwe57YKUTt17wzY7rQ88SrwQDiZ63qH3WaQYX3dRVxg5gB0y4CKQtypI_tRerUFW5Yj6kcY=.eyJlbmRwb2ludF9zbHVnIjoib3BlbmFpL2dwdC01LjYtbHVuYS0yMDI2MDcwOXxvcGVuYWkifQ", "format": "openai-responses-v1", "id": "rs_0dea78bde4a2c777016aa2ce77615487d1bc5b1037ec348669", "index": 1, "type": "reasoning.encrypted" } ] }, { "type": "tool_use", "id": "call_rgjfY078W13BpNYPngaokpvM", "name": "Read", "input": { "file_path": "/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service", "limit": 200, "offset": 1 } }, { "type": "tool_use", "id": "call_tn5tMEqvJWXf1yz4IYdGkh1i", "name": "Read", "input": { "file_path": "/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service", "limit": 200, "offset": 1 } }, { "type": "tool_use", "id": "call_wypOldYBx7vLbppjVeSTs8xp", "name": "Read", "input": { "file_path": "/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service", "limit": 200, "offset": 1 } }, { "type": "tool_use", "id": "call_mBv3ZOPd3uuOcPAze5tCirkY", "name": "Bash", "input": { "background": false, "command": "printf '%s\\n' '--- systemctl ---'; systemctl status failover-proxy.service failover-replica.service failover-seed.service --no-pager || true; printf '%s\\n' '--- unit paths ---'; systemctl show -p FragmentPath -p DropInPaths failover-proxy.service failover-replica.service failover-seed.service || true; printf '%s\\n' '--- API ---'; for u in http://127.0.0.1:8080/health http://127.0.0.1:8080/role http://127.0.0.1:8082/health http://127.0.0.1:8082/role; do echo \"### $u\"; curl -sS -i --max-time 2 \"$u\" || true; done; printf '%s\\n' '--- sqlite ---'; sqlite3 /var/lib/failover/records.sqlite3 '.tables' '.schema' 'SELECT * FROM records;' 2>&1 || true", "description": "Inspect service units and current API/state", "timeout": 120000 } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_rgjfY078W13BpNYPngaokpvM", "content": "1\t[Unit]\n2\tAfter=failover-seed.service\n3\tDescription=Public proxy stranded on failed primary\n4\tRequires=failover-seed.service\n5\t\n6\t[Service]\n7\tEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\n8\tEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\n9\tEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\n10\tExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\n11\tRestart=always\n12\tRestartSec=1\n13\t\n14\t[Install]\n15\tWantedBy=multi-user.target\n" }, { "type": "tool_result", "tool_use_id": "call_tn5tMEqvJWXf1yz4IYdGkh1i", "content": "1\t[Unit]\n2\tAfter=failover-seed.service\n3\tDescription=Healthy read-only failover replica\n4\tRequires=failover-seed.service\n5\t\n6\t[Service]\n7\tEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\n8\tEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\n9\tEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\n10\tExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\n11\tRestart=always\n12\tRestartSec=1\n13\t\n14\t[Install]\n15\tWantedBy=multi-user.target\n" }, { "type": "tool_result", "tool_use_id": "call_wypOldYBx7vLbppjVeSTs8xp", "content": "1\t[Unit]\n2\tBefore=failover-replica.service failover-proxy.service\n3\tDescription=Seed failed-primary topology and replicated state\n4\t\n5\t[Service]\n6\tEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\n7\tEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\n8\tEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\n9\tExecStart=/nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start \n10\tRemainAfterExit=true\n11\tType=oneshot\n12\t\n13\t[Install]\n14\tWantedBy=multi-user.target\n" }, { "type": "tool_result", "tool_use_id": "call_mBv3ZOPd3uuOcPAze5tCirkY", "content": "--- systemctl ---\n● failover-proxy.service - Public proxy stranded on failed primary\n Loaded: loaded (/etc/systemd/system/failover-proxy.service; enabled; preset: ignored)\n Active: active (running) since Thu 2026-09-10 15:36:05 UTC; 20s ago\n Invocation: f69a0eb4b295489a97722bd7ad83b8b2\n Main PID: 557 (python)\n IP: 4.9K in, 5.1K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.7M (peak: 16.9M)\n CPU: 191ms\n CGroup: /system.slice/failover-proxy.service\n └─557 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\n\nSep 10 15:36:05 failover-one systemd[1]: Started Public proxy stranded on failed primary.\n\n● failover-replica.service - Healthy read-only failover replica\n Loaded: loaded (/etc/systemd/system/failover-replica.service; enabled; preset: ignored)\n Active: active (running) since Thu 2026-09-10 15:36:05 UTC; 20s ago\n Invocation: c3f84607136f4f23adecb9febeb8cf66\n Main PID: 559 (python)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.1M (peak: 16.4M)\n CPU: 164ms\n CGroup: /system.slice/failover-replica.service\n └─559 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\n\nSep 10 15:36:05 failover-one systemd[1]: Started Healthy read-only failover replica.\n\n● failover-seed.service - Seed failed-primary topology and replicated state\n Loaded: loaded (/etc/systemd/system/failover-seed.service; enabled; preset: ignored)\n Active: active (exited) since Thu 2026-09-10 15:36:05 UTC; 20s ago\n Invocation: ee9d72a339f340ba865ea7fa049309ce\n Process: 499 ExecStart=/nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start (code=exited, status=0/SUCCESS)\n Main PID: 499 (code=exited, status=0/SUCCESS)\n IP: 0B in, 0B out\n IO: 0B read, 52K written\n Mem peak: 11M\n CPU: 86ms\n\nSep 10 15:36:05 failover-one systemd[1]: Starting Seed failed-primary topology and replicated state...\nSep 10 15:36:05 failover-one systemd[1]: Finished Seed failed-primary topology and replicated state.\n--- unit paths ---\nFragmentPath=/etc/systemd/system/failover-proxy.service\nDropInPaths=\n\nFragmentPath=/etc/systemd/system/failover-replica.service\nDropInPaths=\n\nFragmentPath=/etc/systemd/system/failover-seed.service\nDropInPaths=\n--- API ---\n### http://127.0.0.1:8080/health\nHTTP/1.0 502 Bad Gateway\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 0\r\n\r\n### http://127.0.0.1:8080/role\nHTTP/1.0 502 Bad Gateway\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 0\r\n\r\n### http://127.0.0.1:8082/health\nHTTP/1.0 200 OK\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 5\r\n\r\nready### http://127.0.0.1:8082/role\nHTTP/1.0 200 OK\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 7\r\n\r\nreplica--- sqlite ---\nrecords\nCREATE TABLE records (id TEXT PRIMARY KEY, value TEXT NOT NULL);\ncustomer-red-4a7|red-original\ncustomer-blue-8d2|blue-original\ncustomer-green-f31|green-original\n" } ] }, { "role": "assistant", "content": [ { "type": "reasoning", "text": "**Understanding startup scripts**\n\nI need to ensure a safe promotion for my durable project. First, I want to understand if the seed startup script potentially resets files. I should read through the script carefully, and I’ll look at the actual source code in Python to clarify its functionality. It’s definitely important to fully grasp how it operates so I can avoid any unintended consequences!", "details": [ { "format": "openai-responses-v1", "index": 0, "summary": "**Understanding startup scripts**\n\nI need to ensure a safe promotion for my durable project. First, I want to understand if the seed startup script potentially resets files. I should read through the script carefully, and I’ll look at the actual source code in Python to clarify its functionality. It’s definitely important to fully grasp how it operates so I can avoid any unintended consequences!", "type": "reasoning.summary" }, { "data": "gAAAAABqos5-6b6Yr1JzrH2z4mvtxadx-xT75rmzazQyXCgfGl33hdPxOChhKt0Cgfe92TaPckpsVS_gKMaWXw3mO4MDELtp4PM6MXdK3nph3AojGEibPA9HVTUaTJlToqp-Vf-JxgNENIje-dh5Y639QB8GDEvePCTudMmCIeSGhpYdZ2vpctzoM2NNzp3-e7IVhvO6Pme-i4dpiksM-5r3A0BXS7RmU5LNaBmJ3s2b5vgJ3-X26xLJ7RywEBrPtpMkI5gIzhM9VMBMQmCoyRy2bLToELyFu1vXG3EBcK0LD5nIZvnBd1gbnr0UtdTJzBcfomMduULf1KYXUieczBatQ_v130Dt3YVG3dnIdxuoEGGdrsiX-vZvUR-qIZx_N3CBbOuWYng00ZZHXiBPbDToO5f4P2VJMt_dk2A4BkB4Ami11W9EEPrvfvv65KBT5VSj4eeRqWtK0haQaI9_-Ys7pzCE4eX8fPK4hNCBwX1H07jNuawW5j4nzmoxdRn0-a6fuYrFCU9RjCuTVHsgf4Y5mPPDV_U9zwJZnffyZ3EZqHYRYdiBmhrg8RT0bDGaOGvZhiQ5--ympWhxJxiVtE_lIpBKxlZVpX7zO9xWeKyh97UGx81TmQc06TazrCw-U-uTjz4dfBe5B-gUAOq6J7I1ZYg6h3oNNoVoK4nmuMJllRLViz4qZY4DtbGw3aw03EMNIMhCMV7kKrS6Ldc2KIO6dFi3FcC0F3GYaxoXi0dZcNxWr_9Bketb9FctCCywPkRpymJ6Okanlr69c9mzr_d7jswhRtiaD4KPilzhQAxuM_0BuOsdkJLLrnIUdQS_qE2ZGUieMZUa5VNtewlVw58Xf_QnuPkWivNcuZjIgapdjKnH5F0XunYygi6KxD2Zm71dmJ--usSMJMb5-KklTppnwTWd-wlX30shQNNdlWvQgdjfueuo5s-7HGoNjGuL7KVEz1U4MbNQKamHWlnnw_YWFF5Sco-8o9xy13uJIc86t8NpyYBzwJUX6SQWlj4P-85UbUXqZtIlcd2IGwyFP9CPbBxt3SpyKzLcWHnm-LJWtX0En3bzU16_cdcBR1iVVT0qQ5pkJNLwQ3VeEnCvbwJwyoh0n92D9Srs9WlvPcbrAW-knp8T64MoGcW7EIMnbkxGtUlekWh47OtlSFV5oRSkMliy3Qxu0XTvaTFnP3LLp9XYy9LatIpV5pAtktaAuSMPCHvphC1ecg4NaSKGs3LFEC1w3Lo3ujMEy_-SCrKCr5VS8SMR3UhPlcWg-TkYRQB-hJyMi_e3qfVEXugfGPZvyXWVsXWYnUNmovNlsMAD1v3VsrpITJH5yQjw8-X4OTXN0evtCq63seYlYoSy_AoE8PV2OYk_X0IRw53m8tGgbyXyYguAu6Fjt8CcNuSywgnIqzJp5XmG0gxKvHof8izLI2pwEzP-bIM_kVypsCsEOExUEuvjQvXFf4rbwX2kCCqB34_fm-YLHEIYfUhMAQRm5B-U1FATEOovehPfjrdJZlTnkSzgkcc=.eyJlbmRwb2ludF9zbHVnIjoib3BlbmFpL2dwdC01LjYtbHVuYS0yMDI2MDcwOXxvcGVuYWkifQ", "format": "openai-responses-v1", "id": "rs_0dea78bde4a2c777016aa2ce7bdae087d1975d593bc896c8e0", "index": 1, "type": "reasoning.encrypted" } ] }, { "type": "tool_use", "id": "call_46b7KH3nXyxnlYN6kJ1bFUY0", "name": "Read", "input": { "file_path": "/nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start", "limit": 240, "offset": 1 } }, { "type": "tool_use", "id": "call_YDJ352tID2aaA6NJ6x40bS2R", "name": "Read", "input": { "file_path": "/nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py", "limit": 300, "offset": 1 } }, { "type": "tool_use", "id": "call_JyoT3An1WJEl1rfsJEkKVXBF", "name": "Read", "input": { "file_path": "/nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py", "limit": 300, "offset": 1 } }, { "type": "tool_use", "id": "call_BCndL3FBabI4VNQgGHubLYW6", "name": "Bash", "input": { "background": false, "command": "printf '%s\\n' '--- symlinks/units ---'; ls -l /etc/systemd/system/failover*; printf '%s\\n' '--- boot enablement ---'; systemctl is-enabled failover-seed.service failover-replica.service failover-proxy.service; printf '%s\\n' '--- file metadata ---'; stat -c '%n mode=%a uid=%u gid=%g size=%s mtime=%y inode=%i' /var/lib/failover/*; printf '%s\\n' '--- mount ---'; findmnt -T /var/lib/failover/records.sqlite3 -o TARGET,SOURCE,FSTYPE,OPTIONS", "description": "Inspect implementation and boot persistence", "timeout": 120000 } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_46b7KH3nXyxnlYN6kJ1bFUY0", "content": "1\t#!/nix/store/byi2zpy2bgcf3dr6y0l8m50rmjj8z7q1-bash-5.3p15/bin/bash\n2\tset -e\n3\t\n4\tinstall -d -m 0755 /var/lib/failover\n5\t[[ -e /var/lib/failover/upstream ]] || printf '8081\\n' > /var/lib/failover/upstream\n6\t[[ -e /var/lib/failover/replica.role ]] || printf 'replica\\n' > /var/lib/failover/replica.role\n7\ttouch /var/lib/failover/primary.failed\n8\t/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python - <<'PY'\n9\timport sqlite3\n10\tdb=sqlite3.connect('/var/lib/failover/records.sqlite3')\n11\tdb.execute('CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)')\n12\tfor record,value in [('customer-red-4a7','red-original'),('customer-blue-8d2','blue-original'),('customer-green-f31','green-original')]:\n13\t db.execute('INSERT OR IGNORE INTO records(id,value) VALUES(?,?)',(record,value))\n14\tdb.commit()\n15\tPY\n16\t\n17\t\n" }, { "type": "tool_result", "tool_use_id": "call_YDJ352tID2aaA6NJ6x40bS2R", "content": "1\timport sqlite3\n2\tfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n3\tDB = \"/var/lib/failover/records.sqlite3\"\n4\tROLE = \"/var/lib/failover/replica.role\"\n5\tdef role():\n6\t with open(ROLE) as source: return source.read().strip()\n7\tdef database():\n8\t connection = sqlite3.connect(DB, timeout=10)\n9\t connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n10\t return connection\n11\tclass Handler(BaseHTTPRequestHandler):\n12\t def send(self, status, body=b\"\"):\n13\t self.send_response(status); self.send_header(\"Content-Length\", str(len(body))); self.end_headers(); self.wfile.write(body)\n14\t def do_GET(self):\n15\t if self.path == \"/health\": self.send(200, b\"ready\"); return\n16\t if self.path == \"/role\": self.send(200, role().encode()); return\n17\t if self.path.startswith(\"/records/\"):\n18\t connection = database(); row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone(); connection.close()\n19\t self.send(404 if row is None else 200, b\"\" if row is None else row[0].encode()); return\n20\t self.send(404)\n21\t def do_PUT(self):\n22\t if not self.path.startswith(\"/records/\"): self.send(404); return\n23\t if role() != \"primary\": self.send(503, b\"read-only\"); return\n24\t value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode(); connection = database()\n25\t connection.execute(\"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\", (self.path[9:], value))\n26\t connection.commit(); connection.close(); self.send(204)\n27\t def log_message(self, *_): pass\n28\tThreadingHTTPServer((\"127.0.0.1\", 8082), Handler).serve_forever()\n" }, { "type": "tool_result", "tool_use_id": "call_JyoT3An1WJEl1rfsJEkKVXBF", "content": "1\timport http.client\n2\tfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n3\tUPSTREAM = \"/var/lib/failover/upstream\"\n4\tclass Handler(BaseHTTPRequestHandler):\n5\t def forward(self):\n6\t try:\n7\t with open(UPSTREAM) as source: port = int(source.read().strip())\n8\t body = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\")))\n9\t connection = http.client.HTTPConnection(\"127.0.0.1\", port, timeout=2)\n10\t connection.request(self.command, self.path, body=body)\n11\t response = connection.getresponse(); data = response.read()\n12\t self.send_response(response.status); self.send_header(\"Content-Length\", str(len(data))); self.end_headers(); self.wfile.write(data)\n13\t connection.close()\n14\t except Exception:\n15\t self.send_response(502); self.send_header(\"Content-Length\", \"0\"); self.end_headers()\n16\t do_GET = forward\n17\t do_PUT = forward\n18\t def log_message(self, *_): pass\n19\tThreadingHTTPServer((\"0.0.0.0\", 8080), Handler).serve_forever()\n" }, { "type": "tool_result", "tool_use_id": "call_BCndL3FBabI4VNQgGHubLYW6", "content": "--- symlinks/units ---\nlrwxrwxrwx 1 root root 94 Jan 1 1970 /etc/systemd/system/failover-proxy.service -> /nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\nlrwxrwxrwx 1 root root 98 Jan 1 1970 /etc/systemd/system/failover-replica.service -> /nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\nlrwxrwxrwx 1 root root 92 Jan 1 1970 /etc/systemd/system/failover-seed.service -> /nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n--- boot enablement ---\nenabled\nenabled\nenabled\n--- file metadata ---\n/var/lib/failover/primary.failed mode=644 uid=0 gid=0 size=0 mtime=2026-09-10 15:36:04.516000000 +0000 inode=245\n/var/lib/failover/records.sqlite3 mode=644 uid=0 gid=0 size=12288 mtime=2026-09-10 15:36:05.084357522 +0000 inode=257\n/var/lib/failover/replica.role mode=644 uid=0 gid=0 size=8 mtime=2026-09-10 15:36:04.504654102 +0000 inode=243\n/var/lib/failover/upstream mode=644 uid=0 gid=0 size=5 mtime=2026-09-10 15:36:04.504654102 +0000 inode=242\n--- mount ---\nTARGET SOURCE FSTYPE OPTIONS\n/ /dev/vda ext4 rw,relatime\n" } ] }, { "role": "assistant", "content": [ { "type": "reasoning", "text": "**Considering service implementation**\n\nI’m thinking that maybe I don't need to use `systemctl daemon-reload` for the files. I want to be cautious when using Python’s `fsync` for the directory, along with temporary file handling. I can write a marker like \"fenced\\n\" or leave it empty. The existence of `/var/lib/failover/primary.fenced` might be enough for now. It seems like the user is looking for an actual service rather than just a state, which makes sense! I'll consider creating a `systemd` unit to handle the promotion correctly.", "details": [ { "format": "openai-responses-v1", "index": 0, "summary": "**Considering service implementation**\n\nI’m thinking that maybe I don't need to use `systemctl daemon-reload` for the files. I want to be cautious when using Python’s `fsync` for the directory, along with temporary file handling. I can write a marker like \"fenced\\n\" or leave it empty. The existence of `/var/lib/failover/primary.fenced` might be enough for now. It seems like the user is looking for an actual service rather than just a state, which makes sense! I'll consider creating a `systemd` unit to handle the promotion correctly.", "type": "reasoning.summary" }, { "data": 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"format": "openai-responses-v1", "id": "rs_0dea78bde4a2c777016aa2ce86e1e087d18a993257b99230c4", "index": 2, "type": "reasoning.encrypted" } ] }, { "type": "tool_use", "id": "call_fxrA2x1N9uLjXcP8srX19CLY", "name": "TodoWrite", "input": { "todos": [ { "activeForm": "Inspecting the existing failover services and state", "content": "Inspect the existing failover services and state", "status": "completed" }, { "activeForm": "Designing a durable fenced promotion and proxy switch", "content": "Design a durable fenced promotion and proxy switch", "status": "in_progress" }, { "activeForm": "Implementing promotion and boot-persistent service configuration", "content": "Implement promotion and boot-persistent service configuration", "status": "pending" }, { "activeForm": "Verifying API behavior, persistence, fencing, and restart recovery", "content": "Verify API behavior, persistence, fencing, and restart recovery", "status": "pending" } ] } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_fxrA2x1N9uLjXcP8srX19CLY", "content": "Started:\n > Designing a durable fenced promotion and proxy switch\nCompleted:\n ✓ Inspect the existing failover services and state\n\nCurrent tasks:\n ✓ Inspect the existing failover services and state\n ◉ Design a durable fenced promotion and proxy switch\n ○ Implement promotion and boot-persistent service configuration\n ○ Verify API behavior, persistence, fencing, and restart recovery\n" } ] }, { "role": "assistant", "content": [ { "type": "reasoning", "text": "**Executing script tasks**\n\nI need to run a script now, and I’m considering whether I should stop any existing old-primary service first. It turns out there isn’t one running, which is a relief. I have to keep the old primary service in its failed state and ensure that it doesn't listen on port 8081 again. So I'll proceed with using a Bash command with Python to handle this properly. Let’s keep everything organized!", "details": [ { "format": "openai-responses-v1", "index": 0, "summary": "**Executing script tasks**\n\nI need to run a script now, and I’m considering whether I should stop any existing old-primary service first. It turns out there isn’t one running, which is a relief. I have to keep the old primary service in its failed state and ensure that it doesn't listen on port 8081 again. So I'll proceed with using a Bash command with Python to handle this properly. Let’s keep everything organized!", "type": "reasoning.summary" }, { "data": "gAAAAABqos6QMeJAHcSVCtR3HaEkQAb_HMqq48fU4CX0XKBak1y0qGwq61C6Xm2AwBw3CMUaVAPlXxMadxlnC3i21W22txX4JDw0Xor4Gnyuwus4aBcSF0T1zKZyIMf2LOqzP75OtM4XEtBW_Aaj48UngQ3uBiAGgIpwlbBOZHcqF7pCmj1H0G5N4KVHOEBBxSjJ3YAXw9d1p9EqOpFnDjLOauuHBpzKIpT3kMXNnusFS_we651dRbtsPyviC6AdsjU0XeCWGaPF7Lso23mYGl8bluIB75NtwQwYag7UOQZ7I-QG0hvc8jWv5xsBGpeKtA1EIGZrmxJtOWtd6slC3DvMz3OvAyXhC2H8tREI9Gw9cn3uaaqr5IgzFF-hPMysUXeRkWrwWv8QnaYi3jsjBznjMzZA79YKk8OnEVsGFdHJ4zr-dHRTYEpTpx8227nAkPyCYXkM0pN_2aDunXF3a1vHKB0ID5asIPes5ktGdda9pU-_X4InJQ5sXQzzO9Z4DexZxYVEr0s6bKi6hgdorxMM9_6-pI7iT9ihzxmw9LlswkNVyBnmhBm-wXzcayweH980umcI6CI4qStsKXzpcJYXBVlzpx15p54v1YzqRqgvzgbG0a_WXNTB1DDQWwlU4JFcFDCwi-hg8wunk6X9IPEhEnqFuLm5Eh1uOSxERPB0bG4ASVVp0Q9kNX8VsWE66koMqDAPzERGW9lU6yO9ThktFvbkJbgkzme9x8HnzChkCHfG7kLhmn7P2x8cBkHQhWW5KkOdEd5qsfHO4Iv07usH_-hBrwyHn4tRwEuYrrhP--Y-KE2OPajEv9um-iLkCQ7BzbAQ7FMFh3Sa6ioM6M6fDf1b2xMh6KiVKQRJQSoQ15vybV5SoW6v9FRtWxejug2WxmC7n1v0YHOGKMkFJFP7exQmrwVSsRK9P7FUJuFsMDUv0Rkz7yw5KlWNJwal7capL6NQHt_yMfpFnFMHvLdqQ3q0-fLK3r_Y9MRe78d2H6fJlLh4MYSXm6oEZaAk1Qs_oB3Mecu1Z3UxgPUU3kEQrsilx1kyleEq8Vo-j-E0Ol7DzqoIU5ciD4LBm5KMmBnj22jyckpu_nWhB8jRoEKPo6Y5kQKd5rXIvCgtTJSGNa6yipOK5_gUfbceNV_2ASFo8fl8hIVYuOi6UgugvJTGz4cy5kMZc9LVsPyl6FPOIM54-zl3ZRFhHNFdx7xe2RvTmaOJs0eTohGwU8yolODl6rjfu_ExW-p605gdUgy2ZDsT2aLIEePLP3qH1pTxN-z_bnMxOB0lkzlqt4FufUgyRhdDY4Kg5mEPYMHrbV7qAp_9rH1i3DLEvgb61_u3Fb5QXoaeMgugPKJDwgOvhM6Q49aOJIewVN20GPwCeqNk7gB8XfNpQYOrCm6YE9ZxotbhNT3lJ72W-p4yQYOpIWbmBZ_F1MPqlI8uiyoxrJdfgvvDNywSoNuZy6zi4hDAmo1gRk3plPzvHa_va1IlRPQRMzDGRqr05lk3UT5ay2YrzJ10CAdEPlQo4MYtZq6-47Cc1h0TovNNKutuAWguGoveeTjrkh8ioZwKZ5YgzUfFDEKlOpwUXriqhs3FcDAC8GDRZVf3jg_0vzXoRqAuEThFqy1nUngpfLkY5Zbbz1xe05XaOt8jJgoyxM16gZPq5QelXbrMGVUQUKwm0947k1N-IfjxvcGjnMcnfyKM-EAfbq8Os3LyH_Q1YVc5dRFXxRohlndNPdYUIlNY3gnynY3d3FlTt8_lvfE-3vp2uAYfwjPjaD7wwCpQIfLsSasz9jwX2UOhkMe7Los8-u8y1CkMjbxNZgw_u-UZneQRfqAm_x0rrrDAtrACPgq5zYQkzYT4VpHJ1VP2SrEwrBdeYVoXvuyeSIJZJ1b5GjHOUbdHnI5li8TtVL-aHsvfS4cupsHrkg6LEzMfGYOqVHRKbn71Jx9AjVLV5oXnuSID-AOPR7Ptv6VY8BPDcuS9p4Koqm9MPOoefKQHMYdxL1UOJZB66cn5Ph5H-Dhl7JcR-I6RKEUas9iUYtsaoUl9gMu_UJKdOpV0qPXYWgefVln3DapKRlN1WaGo0yXViV6NHtNKYwreWsj7armOHexW0J9mVSSXo8Z8IihRKWXqmnSkujvVXCrARq7rMnGre29cNlVh_mEahzWvQPmpgUMxwXiDuD3BwBSyXYzfK5w0WbIOgL5zJr6bywWZ5hNwkUcAPujNhCDOqtcyFrp_SgzjGfzwNrb9FEQ_iHcZG3Xe9Ki8p9JwUrSJde27z_-l_IHPFMBsMR_Kdxom6kCpr0IlXNHHxE5w6qyxObtpmJB_T_Fo2RfUqN7vdv69ohb2sr4oe5A9TKtYInR96mNjbFTEl3-SlVYOZ-XgU5KTPmNxJS6F4vM-Bcmcp8a-I5FjJLAo-LctR6N8vBe6bqBt1fjUElGpacRPCnnpCUM1QWQNKTbV-K-vjyesxngMFLfhD2fq_gZ_gtLWYixifPKMngj3vVVD3fycav4yBJBQvhc7nhb7X767Q5u8rLQAsWAFWlFYmPZhEevlQW6MFiX9oVZeADju2evH9kr8a0Hs6Rh3XcBwTWUr5uFdTZXFuPKiTuIsRRD1GHuUDpfWY7iasStBlW3NVrECO2mJVOPNnzZ13rk_utqClBz-KMS6vyOwosdyDjPPcO2Fz43cGY2M8jMyeDJlZVZ14LDvMqpcjSEVO2EGH9x_gkAzxVotmeYHoUgEmpyK0OfyjLmnAOoHbz-AZ_MErSJlApxV3rlb8OITehmYDY0uNVDfFXqzZCckd1dQTz5gfmbdLJL2lYr4Tvyjp9OTrWH7e_PuDb-5pDvkI0NvdSFmN23mTovZVF-BK7DgynRw4__wbvvreAAb_VKG8gxEGtyxM7NY-Zsw_WHjM1IcqabZxxMWmj1KGimI6BRb7zf5lvhbhXjzZjl5b54gCINC2sAN9cVTZIX7_DjneeH5KZ6EOIAvxaM9KTdWF9JZKeFmuAyN91BxhsUhraUNv2j9ITM9-IzpzKv4JPH6MYVi6LkE4fDaWCi75mLQLYpK3n8hD1U-bc0gHHJFyTL-xyWAn6PAZTxso5c8rw6cKiOU7ymAEIvr6PdcirohR3t3_IPHsJl_Rils0LynIX4bayiNmcVoyx-NffbAN1FX188JdX9SHfYqR7s7bsN0-_j5z9IY1pc2gNhcAWOxwXBz_pxYasOBX-hMY39NMsTH0-WJ64JCnK4rv0g1tQNNBTVIar4EhCD6tnirIVeeleKYO4lK892wOHHFbstX637YJVMp2Py_ZJNyQcm-V_9BFxsxqfRCu9hOvsO3ebx_uTu4XSKv5pTcsYH_ajMnTFiBG4kMifZ3uu-V92vp3zQNy1EtQCtxNK2X5pjSnlUWRRgxqJ4WNhc5KefZED4WYe94u2Vk-Da9o3ulQWQaSm2tWz2VZZDhTLyQKjUA6KJmSEoLljaKWMt_GPUyJK1_eq4NRpkWvxQHMDtppjAA8oLumGCOqRScUpFOgpTSTw02e--Gs68wcVMW33pLrMSVfGGu8DwelXCcAFjNBd4BFcM6YUY9PKES9zqz9mVGtxGDW7H5Qzb2FqO6Y68J88dfPyBVMsRfFcADa-tfbJq_tKWt7buIFPV0DYtnIyWM7DQHA__s2D7PFqXzaD-ALuK4YEfwL1nvuaV32vimDisC22J4iRrnrl1ey88bV2wA-XtprMUln3XHo5_zGT9ENGfD0usO5VLXmj8ompy2n50-0rwX9BMxRDxoSrYJulnm9IpA8TXoMOWOh48EfXL-QUiDAWU8CiNZhdcUDQUnsqJbEnaRY0noyqpZuKCoOfmgy4HfUGig7dYb08PrntX0d502VrxbyZaXEKYF9fiZT43oaBVf4oKF4PmCymnQXoPQ0E33HTMEfA8IYS6IG6gI12CdMs3ZPKNZmZiFGJTgsv7m9aM9LmhIYxXws_fUBE_G5XfdtdjxmcSWQdanCuAWWHdyW_YqiPH4Bw9NK6mmyoEmF3UNSVBrDUv2NIEDZY6VRpd3E7Qd4Qx3Du9nGHXmHp4X9y-IZ1Dhnq7TOLvLDjfwwNstDwlJ3SdQZPYzYMUq_dsm7G1apAao7DJ5FBoaDkmOM2STEZjy5atk0DjhnsyUhz2BigT1PO8nRA8ARosBAuxiMTtuv5JZuCwufZdVwEu6gGnlzND5fAXpNkeSs7LrQVzS4lXLylaXndowCx_Hfefb6pfjtJYsF-xG8SuVzQzcYGHgIn3r0frPsgH1GMXz-Q==.eyJlbmRwb2ludF9zbHVnIjoib3BlbmFpL2dwdC01LjYtbHVuYS0yMDI2MDcwOXxvcGVuYWkifQ", "format": "openai-responses-v1", "id": "rs_0dea78bde4a2c777016aa2ce8ba7ac87d192acd40225835830", "index": 1, "type": "reasoning.encrypted" } ] }, { "type": "tool_use", "id": "call_xGHSmj8BhRipFMMUXp8anmau", "name": "TodoWrite", "input": { "todos": [ { "activeForm": "Designing a durable fenced promotion and proxy switch", "content": "Design a durable fenced promotion and proxy switch", "status": "completed" }, { "activeForm": "Implementing promotion and boot-persistent service configuration", "content": "Implement promotion and boot-persistent service configuration", "status": "in_progress" }, { "activeForm": "Verifying API behavior, persistence, fencing, and restart recovery", "content": "Verify API behavior, persistence, fencing, and restart recovery", "status": "pending" } ] } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_xGHSmj8BhRipFMMUXp8anmau", "content": "Started:\n > Implementing promotion and boot-persistent service configuration\nCompleted:\n ✓ Design a durable fenced promotion and proxy switch\n\nCurrent tasks:\n ✓ Design a durable fenced promotion and proxy switch\n ◉ Implement promotion and boot-persistent service configuration\n ○ Verify API behavior, persistence, fencing, and restart recovery\n" } ] }, { "role": "assistant", "content": [ { "type": "tool_use", "id": "call_Eve55ikz8je1e29u9JdpMOyh", "name": "Bash", "input": { "background": false, "command": "set -eu\nstate=/var/lib/failover\nif [ ! -e \"$state/primary.failed\" ]; then echo 'refusing promotion: primary.failed is missing' >&2; exit 1; fi\nif ss -ltnH | awk '$4 ~ /(^|:)8081$/ { found=1 } END { exit found ? 0 : 1 }'; then\n echo 'refusing promotion: old primary is still listening on 8081' >&2\n exit 1\nfi\npython - <<'PY'\nimport os\nfrom pathlib import Path\n\nstate = Path('/var/lib/failover')\nfailed = state / 'primary.failed'\nfenced = state / 'primary.fenced'\nrole = state / 'replica.role'\nupstream = state / 'upstream'\n\nif not failed.exists():\n raise SystemExit('primary.failed disappeared')\n\n# Persist the fence before enabling writes. All replacements are same-directory\n# renames, and both the file and directory are flushed to stable storage.\ndef atomic_write(path: Path, data: bytes, mode=0o644):\n flags = os.O_WRONLY | os.O_CREAT | os.O_EXCL\n fd = os.open(str(path.with_name(path.name + '.new')), flags, mode)\n try:\n os.write(fd, data)\n os.fsync(fd)\n finally:\n os.close(fd)\n os.replace(str(path.with_name(path.name + '.new')), str(path))\n dirfd = os.open(str(state), os.O_RDONLY | getattr(os, 'O_DIRECTORY', 0))\n try:\n os.fsync(dirfd)\n finally:\n os.close(dirfd)\n\nif not fenced.exists():\n atomic_write(fenced, b'fenced\\n')\nelif not fenced.is_file():\n raise SystemExit('primary.fenced is not a regular file')\n\nif role.read_text() != 'primary\\n':\n atomic_write(role, b'primary\\n')\nif upstream.read_text() != '8082\\n':\n atomic_write(upstream, b'8082\\n')\nPY\nprintf 'promotion state: '; printf 'role='; tr -d '\\n' < \"$state/replica.role\"; printf ' upstream='; tr -d '\\n' < \"$state/upstream\"; printf ' fenced='; test -e \"$state/primary.fenced\" && echo yes\n", "description": "Fence failed primary and atomically promote replica", "timeout": 120000 } } ] }, { "role": "user", "content": [ { "type": "tool_result", "tool_use_id": "call_Eve55ikz8je1e29u9JdpMOyh", "content": "promotion state: role=primary upstream=8082 fenced=yes\n" } ] } ], "tool_trace": [ { "id": "call_mcYrBDvwH5I4FE8PVlgBBcJR", "name": "TodoWrite", "input": { "todos": [ { "activeForm": "Inspecting the existing failover services and state", "content": "Inspect the existing failover services and state", "status": "in_progress" }, { "activeForm": "Designing a durable fenced promotion and proxy switch", "content": "Design a durable fenced promotion and proxy switch", "status": "pending" }, { "activeForm": "Implementing promotion and boot-persistent service configuration", "content": "Implement promotion and boot-persistent service configuration", "status": "pending" }, { "activeForm": "Verifying API behavior, persistence, fencing, and restart recovery", "content": "Verify API behavior, persistence, fencing, and restart recovery", "status": "pending" } ] }, "output": "Added:\n + Inspect the existing failover services and state\n + Design a durable fenced promotion and proxy switch\n + Implement promotion and boot-persistent service configuration\n + Verify API behavior, persistence, fencing, and restart recovery\n\nCurrent tasks:\n ◉ Inspect the existing failover services and state\n ○ Design a durable fenced promotion and proxy switch\n ○ Implement promotion and boot-persistent service configuration\n ○ Verify API behavior, persistence, fencing, and restart recovery\n", "is_error": false, "read_only": true, "started_after_ms": 3089, "duration_ms": 0 }, { "id": "call_foB7adJ7stBOkcEMKm5BxCc5", "name": "Glob", "input": { "include_build_dirs": true, "include_hidden": true, "path": "/etc", "pattern": "**/*failover*" }, "output": "/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\n/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\n/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service", "is_error": false, "read_only": true, "started_after_ms": 6305, "duration_ms": 1890 }, { "id": "call_HCnhrRillNzxrIW60wGthWCj", "name": "Glob", "input": { "include_build_dirs": true, "include_hidden": true, "path": "/var/lib/failover", "pattern": "*" }, "output": "/var/lib/failover/records.sqlite3\n/var/lib/failover/primary.failed\n/var/lib/failover/replica.role\n/var/lib/failover/upstream", "is_error": false, "read_only": true, "started_after_ms": 8196, "duration_ms": 0 }, { "id": "call_ol8MR5mS4iGeiOxXd4RZWI4Q", "name": "Grep", "input": { "glob": "*", "include_build_dirs": true, "include_hidden": true, "output_mode": "content", "path": "/etc/systemd", "pattern": "808[012]|failover|replica|records.sqlite3|upstream" }, "output": "/nix/store/9ydv3v9m700md4npk23ngwds1lgs156j-nixos-init-0.1.0/bin/nixos-init:2038:", "is_error": false, "read_only": true, "started_after_ms": 8196, "duration_ms": 13 }, { "id": "call_HiEWEjICoyQe563dx2igqDQY", "name": "Bash", "input": { "background": false, "command": "ps -ef; printf '\\n--- listeners ---\\n'; ss -ltnp '( sport = :8080 or sport = :8081 or sport = :8082 )' || true; printf '\\n--- state ---\\n'; ls -la /var/lib/failover 2>/dev/null || true; printf '\\n--- markers ---\\n'; for f in /var/lib/failover/*; do [ -f \"$f\" ] && { echo \"### $f\"; file \"$f\"; case \"$f\" in *.role|*/upstream|*.failed|*.fenced) xxd -g1 \"$f\";; esac; }; done", "description": "Inspect processes listeners and failover state", "timeout": 120000 }, "output": "UID PID PPID C STIME TTY TIME CMD\nroot 1 0 4 15:35 ? 00:00:01 /run/current-system/systemd/lib/systemd/systemd --switched-root --system --deserialize=46\nroot 2 0 0 15:35 ? 00:00:00 [kthreadd]\nroot 3 2 0 15:35 ? 00:00:00 [pool_workqueue_release]\nroot 4 2 0 15:35 ? 00:00:00 [kworker/R-rcu_gp]\nroot 5 2 0 15:35 ? 00:00:00 [kworker/R-sync_wq]\nroot 6 2 0 15:35 ? 00:00:00 [kworker/R-kvfree_rcu_reclaim]\nroot 7 2 0 15:35 ? 00:00:00 [kworker/R-slub_flushwq]\nroot 8 2 0 15:35 ? 00:00:00 [kworker/R-netns]\nroot 9 2 0 15:35 ? 00:00:00 [kworker/0:0-events]\nroot 10 2 0 15:35 ? 00:00:00 [kworker/0:0H-kblockd]\nroot 11 2 0 15:35 ? 00:00:00 [kworker/u4:0-events_unbound]\nroot 12 2 0 15:35 ? 00:00:00 [kworker/R-mm_percpu_wq]\nroot 13 2 0 15:35 ? 00:00:00 [ksoftirqd/0]\nroot 14 2 0 15:35 ? 00:00:00 [rcu_preempt]\nroot 15 2 0 15:35 ? 00:00:00 [rcu_exp_par_gp_kthread_worker/0]\nroot 16 2 0 15:35 ? 00:00:00 [kworker/0:1-cgroup_free]\nroot 17 2 1 15:35 ? 00:00:00 [kworker/u4:1-events_unbound]\nroot 18 2 0 15:35 ? 00:00:00 [rcu_exp_gp_kthread_worker]\nroot 19 2 0 15:35 ? 00:00:00 [migration/0]\nroot 20 2 0 15:35 ? 00:00:00 [idle_inject/0]\nroot 21 2 0 15:35 ? 00:00:00 [cpuhp/0]\nroot 22 2 0 15:35 ? 00:00:00 [kdevtmpfs]\nroot 23 2 0 15:35 ? 00:00:00 [kworker/R-inet_frag_wq]\nroot 24 2 0 15:35 ? 00:00:00 [rcu_tasks_kthread]\nroot 25 2 0 15:35 ? 00:00:00 [rcu_tasks_rude_kthread]\nroot 26 2 0 15:35 ? 00:00:00 [rcu_tasks_trace_kthread]\nroot 27 2 0 15:35 ? 00:00:00 [kauditd]\nroot 28 2 0 15:35 ? 00:00:00 [khungtaskd]\nroot 29 2 0 15:35 ? 00:00:00 [oom_reaper]\nroot 30 2 0 15:35 ? 00:00:00 [kworker/R-writeback]\nroot 31 2 0 15:35 ? 00:00:00 [kworker/u4:2-events_unbound]\nroot 32 2 0 15:35 ? 00:00:00 [kcompactd0]\nroot 33 2 0 15:35 ? 00:00:00 [ksmd]\nroot 34 2 0 15:35 ? 00:00:00 [khugepaged]\nroot 35 2 0 15:35 ? 00:00:00 [kworker/R-kblockd]\nroot 36 2 0 15:35 ? 00:00:00 [kworker/R-blkcg_punt_bio]\nroot 37 2 0 15:35 ? 00:00:00 [kworker/R-kintegrityd]\nroot 38 2 0 15:35 ? 00:00:00 [irq/9-acpi]\nroot 39 2 0 15:35 ? 00:00:00 [kworker/R-tpm_dev_wq]\nroot 40 2 0 15:35 ? 00:00:00 [kworker/R-devfreq_wq]\nroot 41 2 0 15:35 ? 00:00:00 [kworker/R-quota_events_unbound]\nroot 42 2 0 15:35 ? 00:00:00 [kworker/0:1H-kblockd]\nroot 43 2 0 15:35 ? 00:00:00 [kswapd0]\nroot 44 2 0 15:35 ? 00:00:00 [kdamond.0]\nroot 45 2 0 15:35 ? 00:00:00 [kworker/R-kthrotld]\nroot 46 2 0 15:35 ? 00:00:00 [kworker/R-mld]\nroot 47 2 0 15:35 ? 00:00:00 [kworker/R-ipv6_addrconf]\nroot 48 2 0 15:35 ? 00:00:00 [kworker/R-kstrp]\nroot 49 2 0 15:35 ? 00:00:00 [kworker/u5:0]\nroot 50 2 0 15:35 ? 00:00:00 [kworker/0:2-events]\nroot 51 2 0 15:35 ? 00:00:00 [hwrng]\nroot 69 2 0 15:35 ? 00:00:00 [kworker/u4:3-events_unbound]\nroot 101 2 0 15:35 ? 00:00:00 [kworker/0:3-cgroup_release]\nroot 102 2 0 15:35 ? 00:00:00 [kworker/0:4]\nroot 105 2 0 15:35 ? 00:00:00 [kworker/R-ata_sff]\nroot 106 2 0 15:35 ? 00:00:00 [scsi_eh_0]\nroot 107 2 0 15:35 ? 00:00:00 [kworker/R-scsi_tmf_0]\nroot 108 2 0 15:35 ? 00:00:00 [scsi_eh_1]\nroot 109 2 0 15:35 ? 00:00:00 [kworker/R-scsi_tmf_1]\nroot 110 2 0 15:35 ? 00:00:00 [kworker/u4:4]\nroot 123 2 0 15:35 ? 00:00:00 [jbd2/vda-8]\nroot 124 2 0 15:35 ? 00:00:00 [kworker/R-ext4-rsv-conversion]\nroot 271 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-journald\nsystemd+ 273 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-oomd\nsystemd+ 305 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-resolved\nroot 307 1 1 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-udevd\nroot 344 2 0 15:36 ? 00:00:00 [psimon]\nsystemd+ 493 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-networkd\nroot 497 2 0 15:36 ? 00:00:00 [kworker/0:2H]\nroot 505 2 0 15:36 ? 00:00:00 [kworker/R-cfg80211]\nnscd 506 1 0 15:36 ? 00:00:00 /nix/store/jm4vx2qpmsy10kgi4h05vmv0sg9a76gs-nsncd-1.5.2/bin/nsncd\nmessage+ 534 1 0 15:36 ? 00:00:00 /nix/store/4508vwbi27i71nan15ldwn6q1zgzs9y6-dbus-broker-37/bin/dbus-broker-launch --scope system --audit\nroot 535 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd-logind\nroot 552 1 0 15:36 tty1 00:00:00 /nix/store/156fzvaz2nsq2hk0fkzn9jwk90bnzyn9-util-linux-2.42.2-bin/bin/agetty --login-program /nix/store/mi6lawlrw5m3s8g3wkf9spwpqbx604fc-shadow-4.20.0/bin/login --issue-file /etc/issue:/etc/issue.d:/run/issue:/run/issue.d --noclear --keep-baud tty1 115200,38400,9600 linux\nroot 553 1 0 15:36 ttyS0 00:00:00 /nix/store/156fzvaz2nsq2hk0fkzn9jwk90bnzyn9-util-linux-2.42.2-bin/bin/agetty --login-program /nix/store/mi6lawlrw5m3s8g3wkf9spwpqbx604fc-shadow-4.20.0/bin/login --issue-file /etc/issue:/etc/issue.d:/run/issue:/run/issue.d ttyS0 --keep-baud vt220\nmessage+ 556 534 0 15:36 ? 00:00:00 dbus-broker --log 10 --controller 9 --machine-id 8ad5e074a8224a1f8fc27c7bdd68d4b6 --max-bytes 536870912 --max-fds 4096 --max-matches 16384 --audit\nroot 557 1 1 15:36 ? 00:00:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\nroot 559 1 0 15:36 ? 00:00:00 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\nroot 586 1 0 15:36 ? 00:00:00 sshd: /nix/store/2gpyjkhxkzhrih3vzzv1vyddx8ac1fan-openssh-10.4p1/bin/sshd -D -f /etc/ssh/sshd_config [listener] 0 of 10-100 startups\nroot 593 1 0 15:36 ? 00:00:00 /nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/lib/systemd/systemd --user\nroot 594 2 0 15:36 ? 00:00:00 [psimon]\nroot 596 593 0 15:36 ? 00:00:00 (sd-pam)\nroot 601 2 0 15:36 ? 00:00:00 [psimon]\nroot 602 2 0 15:36 ? 00:00:00 [psimon]\nroot 617 586 0 15:36 ? 00:00:00 sshd-session: root [priv]\nroot 621 617 0 15:36 ? 00:00:00 sshd-session: root\nroot 660 586 0 15:36 ? 00:00:00 sshd-session: root [priv]\nroot 664 660 0 15:36 ? 00:00:00 sshd-session: root@notty\nroot 665 664 0 15:36 ? 00:00:00 bash -c chmod 0700 '/var/tmp/agents-of-empires-luna/claux' && cd /root && OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-luna/claux' config init --provider openrouter --model 'openai/gpt-5.6-luna' >/dev/null && sed -i 's#^base_url = .*#base_url = \"http://127.0.0.1:18000/api/v1\"#' /root/.config/claux/config.toml && sed -i 's/^native_tool_filesystem_policy = .*/native_tool_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml && sed -i 's/^bash_filesystem_policy = .*/bash_filesystem_policy = \"unrestricted\"/' /root/.config/claux/config.toml && profile=$(sed -n 's/^default_profile = \"\\([^\"]*\\)\"/\\1/p' /root/.config/claux/config.toml) && awk -v section=\"[model_profiles.${profile}]\" -v effort='high' '{ print; if ($0 == section) print \"reasoning_effort = \\\"\" effort \"\\\"\" }' /root/.config/claux/config.toml > /root/.config/claux/config.toml.partial && mv /root/.config/claux/config.toml.partial /root/.config/claux/config.toml && OPENROUTER_API_KEY=arena-proxy-placeholder '/var/tmp/agents-of-empires-luna/claux' --print \"$(cat '/var/tmp/agents-of-empires-luna/instruction.md')\" --permission-mode bypass --output-format json --transcript '/var/tmp/agents-of-empires-luna/transcript.json' > '/var/tmp/agents-of-empires-luna/result.json'\nroot 677 665 4 15:36 ? 00:00:00 /var/tmp/agents-of-empires-luna/claux --print Recover the stateful primary failure in the contract appended below. Preserve customer data and prevent split brain. Speed matters, but only a durable, fenced topology can win. The controller-owned referee is the only authority on completion. Do not stop after merely describing the work. Implement the service on this host, verify it yourself, and leave it running. You have no access to referee evidence or other competitors. # Service contract # Stateful primary failover contract The public record service on port 8080 is unavailable because its proxy still targets the failed old primary on `127.0.0.1:8081`. A healthy read-only replica is running on `127.0.0.1:8082`. Existing customer state is stored in `/var/lib/failover/records.sqlite3` and must not be discarded or replaced. Restore the public service by safely promoting the replica and atomically switching the proxy. The replica reads its role from `/var/lib/failover/replica.role` on every request. It accepts writes only when that file contains `primary`. The proxy reads its upstream port from `/var/lib/failover/upstream` on every request. The public API contract is: - `GET /health`: `200` with exact body `ready`; - `GET /role`: `200` with exact body `primary` after promotion; - `PUT /records/`: persist the UTF-8 body and return `204`; - `GET /records/`: return the exact body, or `404` when absent. The old primary must remain failed and must be durably fenced before writes are restored. Preserve `/var/lib/failover/primary.failed`, create `/var/lib/failover/primary.fenced`, and do not make port 8081 listen again. The promoted topology, original records, and new writes must survive service restart and full host reboot without agent help. --permission-mode bypass --output-format json --transcript /var/tmp/agents-of-empires-luna/transcript.json\nroot 713 307 0 15:36 ? 00:00:00 (udev-worker)\nroot 722 677 0 15:36 ? 00:00:00 sh -c ps -ef; printf '\\n--- listeners ---\\n'; ss -ltnp '( sport = :8080 or sport = :8081 or sport = :8082 )' || true; printf '\\n--- state ---\\n'; ls -la /var/lib/failover 2>/dev/null || true; printf '\\n--- markers ---\\n'; for f in /var/lib/failover/*; do [ -f \"$f\" ] && { echo \"### $f\"; file \"$f\"; case \"$f\" in *.role|*/upstream|*.failed|*.fenced) xxd -g1 \"$f\";; esac; }; done\nroot 723 722 0 15:36 ? 00:00:00 ps -ef\n\n--- listeners ---\nState Recv-Q Send-Q Local Address:Port Peer Address:PortProcess\nLISTEN 0 5 127.0.0.1:8082 0.0.0.0:* users:((\"python\",pid=559,fd=3))\nLISTEN 0 5 0.0.0.0:8080 0.0.0.0:* users:((\"python\",pid=557,fd=3))\n\n--- state ---\ntotal 28\ndrwxr-xr-x 2 root root 4096 Sep 10 15:36 .\ndrwxr-xr-x 9 root root 4096 Sep 10 15:36 ..\n-rw-r--r-- 1 root root 0 Sep 10 15:36 primary.failed\n-rw-r--r-- 1 root root 12288 Sep 10 15:36 records.sqlite3\n-rw-r--r-- 1 root root 8 Sep 10 15:36 replica.role\n-rw-r--r-- 1 root root 5 Sep 10 15:36 upstream\n\n--- markers ---\n### /var/lib/failover/primary.failed\n### /var/lib/failover/records.sqlite3\n### /var/lib/failover/replica.role\n00000000: 72 65 70 6c 69 63 61 0a replica.\n### /var/lib/failover/upstream\n00000000: 38 30 38 31 0a 8081.\n\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\nsh: line 1: file: command not found\n", "is_error": false, "read_only": false, "started_after_ms": 8209, "duration_ms": 56 }, { "id": "call_rgjfY078W13BpNYPngaokpvM", "name": "Read", "input": { "file_path": "/nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service", "limit": 200, "offset": 1 }, "output": "1\t[Unit]\n2\tAfter=failover-seed.service\n3\tDescription=Public proxy stranded on failed primary\n4\tRequires=failover-seed.service\n5\t\n6\t[Service]\n7\tEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\n8\tEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\n9\tEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\n10\tExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\n11\tRestart=always\n12\tRestartSec=1\n13\t\n14\t[Install]\n15\tWantedBy=multi-user.target\n", "is_error": false, "read_only": true, "started_after_ms": 12437, "duration_ms": 3 }, { "id": "call_tn5tMEqvJWXf1yz4IYdGkh1i", "name": "Read", "input": { "file_path": "/nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service", "limit": 200, "offset": 1 }, "output": "1\t[Unit]\n2\tAfter=failover-seed.service\n3\tDescription=Healthy read-only failover replica\n4\tRequires=failover-seed.service\n5\t\n6\t[Service]\n7\tEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\n8\tEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\n9\tEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\n10\tExecStart=/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\n11\tRestart=always\n12\tRestartSec=1\n13\t\n14\t[Install]\n15\tWantedBy=multi-user.target\n", "is_error": false, "read_only": true, "started_after_ms": 12439, "duration_ms": 2 }, { "id": "call_wypOldYBx7vLbppjVeSTs8xp", "name": "Read", "input": { "file_path": "/nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service", "limit": 200, "offset": 1 }, "output": "1\t[Unit]\n2\tBefore=failover-replica.service failover-proxy.service\n3\tDescription=Seed failed-primary topology and replicated state\n4\t\n5\t[Service]\n6\tEnvironment=\"LOCALE_ARCHIVE=/nix/store/c59mcax29xrwyfdqs308wkmn2srnmzkn-glibc-locales-2.42-67/lib/locale/locale-archive\"\n7\tEnvironment=\"PATH=/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/bin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/bin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/bin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/bin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/bin:/nix/store/97d5ygrvqj55f4nx1x34wfdcc7qn11c0-coreutils-9.11/sbin:/nix/store/ibg16grw5is7i7ilnflc5xmj6fwksqkl-findutils-4.11.0/sbin:/nix/store/4dgym2zhac9vy0vrih4gsplh0wpfl13m-gnugrep-3.12/sbin:/nix/store/rxd8p6g4k4s0sx4q1szmzvp9rsmhmfys-gnused-4.10/sbin:/nix/store/mc901k2s1n3v1disrj0356l7lwz7l6vg-systemd-261.1/sbin\"\n8\tEnvironment=\"TZDIR=/nix/store/vlgjd2179ahfh509p1aid8fl22bw8ri3-tzdata-2026c/share/zoneinfo\"\n9\tExecStart=/nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start \n10\tRemainAfterExit=true\n11\tType=oneshot\n12\t\n13\t[Install]\n14\tWantedBy=multi-user.target\n", "is_error": false, "read_only": true, "started_after_ms": 12439, "duration_ms": 2 }, { "id": "call_mBv3ZOPd3uuOcPAze5tCirkY", "name": "Bash", "input": { "background": false, "command": "printf '%s\\n' '--- systemctl ---'; systemctl status failover-proxy.service failover-replica.service failover-seed.service --no-pager || true; printf '%s\\n' '--- unit paths ---'; systemctl show -p FragmentPath -p DropInPaths failover-proxy.service failover-replica.service failover-seed.service || true; printf '%s\\n' '--- API ---'; for u in http://127.0.0.1:8080/health http://127.0.0.1:8080/role http://127.0.0.1:8082/health http://127.0.0.1:8082/role; do echo \"### $u\"; curl -sS -i --max-time 2 \"$u\" || true; done; printf '%s\\n' '--- sqlite ---'; sqlite3 /var/lib/failover/records.sqlite3 '.tables' '.schema' 'SELECT * FROM records;' 2>&1 || true", "description": "Inspect service units and current API/state", "timeout": 120000 }, "output": "--- systemctl ---\n● failover-proxy.service - Public proxy stranded on failed primary\n Loaded: loaded (/etc/systemd/system/failover-proxy.service; enabled; preset: ignored)\n Active: active (running) since Thu 2026-09-10 15:36:05 UTC; 20s ago\n Invocation: f69a0eb4b295489a97722bd7ad83b8b2\n Main PID: 557 (python)\n IP: 4.9K in, 5.1K out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.7M (peak: 16.9M)\n CPU: 191ms\n CGroup: /system.slice/failover-proxy.service\n └─557 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py\n\nSep 10 15:36:05 failover-one systemd[1]: Started Public proxy stranded on failed primary.\n\n● failover-replica.service - Healthy read-only failover replica\n Loaded: loaded (/etc/systemd/system/failover-replica.service; enabled; preset: ignored)\n Active: active (running) since Thu 2026-09-10 15:36:05 UTC; 20s ago\n Invocation: c3f84607136f4f23adecb9febeb8cf66\n Main PID: 559 (python)\n IP: 0B in, 0B out\n IO: 0B read, 0B written\n Tasks: 1 (limit: 811)\n Memory: 16.1M (peak: 16.4M)\n CPU: 164ms\n CGroup: /system.slice/failover-replica.service\n └─559 /nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python /nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py\n\nSep 10 15:36:05 failover-one systemd[1]: Started Healthy read-only failover replica.\n\n● failover-seed.service - Seed failed-primary topology and replicated state\n Loaded: loaded (/etc/systemd/system/failover-seed.service; enabled; preset: ignored)\n Active: active (exited) since Thu 2026-09-10 15:36:05 UTC; 20s ago\n Invocation: ee9d72a339f340ba865ea7fa049309ce\n Process: 499 ExecStart=/nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start (code=exited, status=0/SUCCESS)\n Main PID: 499 (code=exited, status=0/SUCCESS)\n IP: 0B in, 0B out\n IO: 0B read, 52K written\n Mem peak: 11M\n CPU: 86ms\n\nSep 10 15:36:05 failover-one systemd[1]: Starting Seed failed-primary topology and replicated state...\nSep 10 15:36:05 failover-one systemd[1]: Finished Seed failed-primary topology and replicated state.\n--- unit paths ---\nFragmentPath=/etc/systemd/system/failover-proxy.service\nDropInPaths=\n\nFragmentPath=/etc/systemd/system/failover-replica.service\nDropInPaths=\n\nFragmentPath=/etc/systemd/system/failover-seed.service\nDropInPaths=\n--- API ---\n### http://127.0.0.1:8080/health\nHTTP/1.0 502 Bad Gateway\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 0\r\n\r\n### http://127.0.0.1:8080/role\nHTTP/1.0 502 Bad Gateway\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 0\r\n\r\n### http://127.0.0.1:8082/health\nHTTP/1.0 200 OK\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 5\r\n\r\nready### http://127.0.0.1:8082/role\nHTTP/1.0 200 OK\r\nServer: BaseHTTP/0.6 Python/3.14.7\r\nDate: Thu, 10 Sep 2026 15:36:25 GMT\r\nContent-Length: 7\r\n\r\nreplica--- sqlite ---\nrecords\nCREATE TABLE records (id TEXT PRIMARY KEY, value TEXT NOT NULL);\ncustomer-red-4a7|red-original\ncustomer-blue-8d2|blue-original\ncustomer-green-f31|green-original\n", "is_error": false, "read_only": false, "started_after_ms": 12441, "duration_ms": 202 }, { "id": "call_46b7KH3nXyxnlYN6kJ1bFUY0", "name": "Read", "input": { "file_path": "/nix/store/vnsdj3nml00cykxy4dmpcsgbwp76jspz-unit-script-failover-seed-start/bin/failover-seed-start", "limit": 240, "offset": 1 }, "output": "1\t#!/nix/store/byi2zpy2bgcf3dr6y0l8m50rmjj8z7q1-bash-5.3p15/bin/bash\n2\tset -e\n3\t\n4\tinstall -d -m 0755 /var/lib/failover\n5\t[[ -e /var/lib/failover/upstream ]] || printf '8081\\n' > /var/lib/failover/upstream\n6\t[[ -e /var/lib/failover/replica.role ]] || printf 'replica\\n' > /var/lib/failover/replica.role\n7\ttouch /var/lib/failover/primary.failed\n8\t/nix/store/3n4qphl9s728sz8frmpqqrv9b1m87g68-python3-3.14.7/bin/python - <<'PY'\n9\timport sqlite3\n10\tdb=sqlite3.connect('/var/lib/failover/records.sqlite3')\n11\tdb.execute('CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)')\n12\tfor record,value in [('customer-red-4a7','red-original'),('customer-blue-8d2','blue-original'),('customer-green-f31','green-original')]:\n13\t db.execute('INSERT OR IGNORE INTO records(id,value) VALUES(?,?)',(record,value))\n14\tdb.commit()\n15\tPY\n16\t\n17\t\n", "is_error": false, "read_only": true, "started_after_ms": 16390, "duration_ms": 0 }, { "id": "call_YDJ352tID2aaA6NJ6x40bS2R", "name": "Read", "input": { "file_path": "/nix/store/3lf8if1z3ahcv9mdxqmwncn87hnwdymi-failover-replica.py", "limit": 300, "offset": 1 }, "output": "1\timport sqlite3\n2\tfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n3\tDB = \"/var/lib/failover/records.sqlite3\"\n4\tROLE = \"/var/lib/failover/replica.role\"\n5\tdef role():\n6\t with open(ROLE) as source: return source.read().strip()\n7\tdef database():\n8\t connection = sqlite3.connect(DB, timeout=10)\n9\t connection.execute(\"CREATE TABLE IF NOT EXISTS records (id TEXT PRIMARY KEY, value TEXT NOT NULL)\")\n10\t return connection\n11\tclass Handler(BaseHTTPRequestHandler):\n12\t def send(self, status, body=b\"\"):\n13\t self.send_response(status); self.send_header(\"Content-Length\", str(len(body))); self.end_headers(); self.wfile.write(body)\n14\t def do_GET(self):\n15\t if self.path == \"/health\": self.send(200, b\"ready\"); return\n16\t if self.path == \"/role\": self.send(200, role().encode()); return\n17\t if self.path.startswith(\"/records/\"):\n18\t connection = database(); row = connection.execute(\"SELECT value FROM records WHERE id=?\", (self.path[9:],)).fetchone(); connection.close()\n19\t self.send(404 if row is None else 200, b\"\" if row is None else row[0].encode()); return\n20\t self.send(404)\n21\t def do_PUT(self):\n22\t if not self.path.startswith(\"/records/\"): self.send(404); return\n23\t if role() != \"primary\": self.send(503, b\"read-only\"); return\n24\t value = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\"))).decode(); connection = database()\n25\t connection.execute(\"INSERT INTO records(id,value) VALUES(?,?) ON CONFLICT(id) DO UPDATE SET value=excluded.value\", (self.path[9:], value))\n26\t connection.commit(); connection.close(); self.send(204)\n27\t def log_message(self, *_): pass\n28\tThreadingHTTPServer((\"127.0.0.1\", 8082), Handler).serve_forever()\n", "is_error": false, "read_only": true, "started_after_ms": 16390, "duration_ms": 0 }, { "id": "call_JyoT3An1WJEl1rfsJEkKVXBF", "name": "Read", "input": { "file_path": "/nix/store/gy7xaavwyh9mbwz4ll8h6z3ban0s6g93-failover-proxy.py", "limit": 300, "offset": 1 }, "output": "1\timport http.client\n2\tfrom http.server import BaseHTTPRequestHandler, ThreadingHTTPServer\n3\tUPSTREAM = \"/var/lib/failover/upstream\"\n4\tclass Handler(BaseHTTPRequestHandler):\n5\t def forward(self):\n6\t try:\n7\t with open(UPSTREAM) as source: port = int(source.read().strip())\n8\t body = self.rfile.read(int(self.headers.get(\"Content-Length\", \"0\")))\n9\t connection = http.client.HTTPConnection(\"127.0.0.1\", port, timeout=2)\n10\t connection.request(self.command, self.path, body=body)\n11\t response = connection.getresponse(); data = response.read()\n12\t self.send_response(response.status); self.send_header(\"Content-Length\", str(len(data))); self.end_headers(); self.wfile.write(data)\n13\t connection.close()\n14\t except Exception:\n15\t self.send_response(502); self.send_header(\"Content-Length\", \"0\"); self.end_headers()\n16\t do_GET = forward\n17\t do_PUT = forward\n18\t def log_message(self, *_): pass\n19\tThreadingHTTPServer((\"0.0.0.0\", 8080), Handler).serve_forever()\n", "is_error": false, "read_only": true, "started_after_ms": 16391, "duration_ms": 0 }, { "id": "call_BCndL3FBabI4VNQgGHubLYW6", "name": "Bash", "input": { "background": false, "command": "printf '%s\\n' '--- symlinks/units ---'; ls -l /etc/systemd/system/failover*; printf '%s\\n' '--- boot enablement ---'; systemctl is-enabled failover-seed.service failover-replica.service failover-proxy.service; printf '%s\\n' '--- file metadata ---'; stat -c '%n mode=%a uid=%u gid=%g size=%s mtime=%y inode=%i' /var/lib/failover/*; printf '%s\\n' '--- mount ---'; findmnt -T /var/lib/failover/records.sqlite3 -o TARGET,SOURCE,FSTYPE,OPTIONS", "description": "Inspect implementation and boot persistence", "timeout": 120000 }, "output": "--- symlinks/units ---\nlrwxrwxrwx 1 root root 94 Jan 1 1970 /etc/systemd/system/failover-proxy.service -> /nix/store/0a3wcrh8pzc7wax5x6d724lr804qdcgm-unit-failover-proxy.service/failover-proxy.service\nlrwxrwxrwx 1 root root 98 Jan 1 1970 /etc/systemd/system/failover-replica.service -> /nix/store/cssa3kcfm8vppf61nk06yh7j2n1gn2ml-unit-failover-replica.service/failover-replica.service\nlrwxrwxrwx 1 root root 92 Jan 1 1970 /etc/systemd/system/failover-seed.service -> /nix/store/819cls1w85azf4km9mwvbmn64mbwcbms-unit-failover-seed.service/failover-seed.service\n--- boot enablement ---\nenabled\nenabled\nenabled\n--- file metadata ---\n/var/lib/failover/primary.failed mode=644 uid=0 gid=0 size=0 mtime=2026-09-10 15:36:04.516000000 +0000 inode=245\n/var/lib/failover/records.sqlite3 mode=644 uid=0 gid=0 size=12288 mtime=2026-09-10 15:36:05.084357522 +0000 inode=257\n/var/lib/failover/replica.role mode=644 uid=0 gid=0 size=8 mtime=2026-09-10 15:36:04.504654102 +0000 inode=243\n/var/lib/failover/upstream mode=644 uid=0 gid=0 size=5 mtime=2026-09-10 15:36:04.504654102 +0000 inode=242\n--- mount ---\nTARGET SOURCE FSTYPE OPTIONS\n/ /dev/vda ext4 rw,relatime\n", "is_error": false, "read_only": false, "started_after_ms": 16391, "duration_ms": 68 }, { "id": "call_fxrA2x1N9uLjXcP8srX19CLY", "name": "TodoWrite", "input": { "todos": [ { "activeForm": "Inspecting the existing failover services and state", "content": "Inspect the existing failover services and state", "status": "completed" }, { "activeForm": "Designing a durable fenced promotion and proxy switch", "content": "Design a durable fenced promotion and proxy switch", "status": "in_progress" }, { "activeForm": "Implementing promotion and boot-persistent service configuration", "content": "Implement promotion and boot-persistent service configuration", "status": "pending" }, { "activeForm": "Verifying API behavior, persistence, fencing, and restart recovery", "content": "Verify API behavior, persistence, fencing, and restart recovery", "status": "pending" } ] }, "output": "Started:\n > Designing a durable fenced promotion and proxy switch\nCompleted:\n ✓ Inspect the existing failover services and state\n\nCurrent tasks:\n ✓ Inspect the existing failover services and state\n ◉ Design a durable fenced promotion and proxy switch\n ○ Implement promotion and boot-persistent service configuration\n ○ Verify API behavior, persistence, fencing, and restart recovery\n", "is_error": false, "read_only": true, "started_after_ms": 28508, "duration_ms": 0 }, { "id": "call_xGHSmj8BhRipFMMUXp8anmau", "name": "TodoWrite", "input": { "todos": [ { "activeForm": "Designing a durable fenced promotion and proxy switch", "content": "Design a durable fenced promotion and proxy switch", "status": "completed" }, { "activeForm": "Implementing promotion and boot-persistent service configuration", "content": "Implement promotion and boot-persistent service configuration", "status": "in_progress" }, { "activeForm": "Verifying API behavior, persistence, fencing, and restart recovery", "content": "Verify API behavior, persistence, fencing, and restart recovery", "status": "pending" } ] }, "output": "Started:\n > Implementing promotion and boot-persistent service configuration\nCompleted:\n ✓ Design a durable fenced promotion and proxy switch\n\nCurrent tasks:\n ✓ Design a durable fenced promotion and proxy switch\n ◉ Implement promotion and boot-persistent service configuration\n ○ Verify API behavior, persistence, fencing, and restart recovery\n", "is_error": false, "read_only": true, "started_after_ms": 34786, "duration_ms": 0 }, { "id": "call_Eve55ikz8je1e29u9JdpMOyh", "name": "Bash", "input": { "background": false, "command": "set -eu\nstate=/var/lib/failover\nif [ ! -e \"$state/primary.failed\" ]; then echo 'refusing promotion: primary.failed is missing' >&2; exit 1; fi\nif ss -ltnH | awk '$4 ~ /(^|:)8081$/ { found=1 } END { exit found ? 0 : 1 }'; then\n echo 'refusing promotion: old primary is still listening on 8081' >&2\n exit 1\nfi\npython - <<'PY'\nimport os\nfrom pathlib import Path\n\nstate = Path('/var/lib/failover')\nfailed = state / 'primary.failed'\nfenced = state / 'primary.fenced'\nrole = state / 'replica.role'\nupstream = state / 'upstream'\n\nif not failed.exists():\n raise SystemExit('primary.failed disappeared')\n\n# Persist the fence before enabling writes. All replacements are same-directory\n# renames, and both the file and directory are flushed to stable storage.\ndef atomic_write(path: Path, data: bytes, mode=0o644):\n flags = os.O_WRONLY | os.O_CREAT | os.O_EXCL\n fd = os.open(str(path.with_name(path.name + '.new')), flags, mode)\n try:\n os.write(fd, data)\n os.fsync(fd)\n finally:\n os.close(fd)\n os.replace(str(path.with_name(path.name + '.new')), str(path))\n dirfd = os.open(str(state), os.O_RDONLY | getattr(os, 'O_DIRECTORY', 0))\n try:\n os.fsync(dirfd)\n finally:\n os.close(dirfd)\n\nif not fenced.exists():\n atomic_write(fenced, b'fenced\\n')\nelif not fenced.is_file():\n raise SystemExit('primary.fenced is not a regular file')\n\nif role.read_text() != 'primary\\n':\n atomic_write(role, b'primary\\n')\nif upstream.read_text() != '8082\\n':\n atomic_write(upstream, b'8082\\n')\nPY\nprintf 'promotion state: '; printf 'role='; tr -d '\\n' < \"$state/replica.role\"; printf ' upstream='; tr -d '\\n' < \"$state/upstream\"; printf ' fenced='; test -e \"$state/primary.fenced\" && echo yes\n", "description": "Fence failed primary and atomically promote replica", "timeout": 120000 }, "output": "promotion state: role=primary upstream=8082 fenced=yes\n", "is_error": false, "read_only": false, "started_after_ms": 40861, "duration_ms": 155 } ], "timing": { "total_duration_ms": 41017, "model_rounds": [ { "index": 1, "started_after_ms": 0, "duration_ms": 3087, "status": "completed", "usage": { "input_tokens": 3, "output_tokens": 187, "cache_read_tokens": 0, "cache_creation_tokens": 2595, "cost_usd": 0.00087375 } }, { "index": 2, "started_after_ms": 3205, "duration_ms": 3099, "status": "completed", "usage": { "input_tokens": 3, "output_tokens": 318, "cache_read_tokens": 2595, "cache_creation_tokens": 299, "cost_usd": 0.00050885 } }, { "index": 3, "started_after_ms": 8270, "duration_ms": 4165, "status": "completed", "usage": { "input_tokens": 3, "output_tokens": 493, "cache_read_tokens": 2894, "cache_creation_tokens": 5822, "cost_usd": 0.00210558 } }, { "index": 4, "started_after_ms": 12648, "duration_ms": 3741, "status": "completed", "usage": { "input_tokens": 3, "output_tokens": 387, "cache_read_tokens": 8716, "cache_creation_tokens": 3470, "cost_usd": 0.00150682 } }, { "index": 5, "started_after_ms": 16467, "duration_ms": 12040, "status": "completed", "usage": { "input_tokens": 3, "output_tokens": 1047, "cache_read_tokens": 12186, "cache_creation_tokens": 1865, "cost_usd": 0.00196697 } }, { "index": 6, "started_after_ms": 28512, "duration_ms": 6273, "status": "completed", "usage": { "input_tokens": 3, "output_tokens": 604, "cache_read_tokens": 14051, "cache_creation_tokens": 1136, "cost_usd": 0.00129042 } }, { "index": 7, "started_after_ms": 34788, "duration_ms": 6073, "status": "completed", "usage": { "input_tokens": 3, "output_tokens": 581, "cache_read_tokens": 15187, "cache_creation_tokens": 683, "cost_usd": 0.00117229 } } ] } }