0f05f73a23
The frontend nginx used a literal proxy_pass host with no resolver, so it pinned mempool-api's IP at worker startup. When the backend restarts (gate, OTA, crash, reboot re-IPAM) podman reassigns its IP and nginx keeps proxying to the dead one -> /api hangs, websocket 502s, UI shows 'offline' until a manual nginx reload. Same stale-upstream-IP class as the netbird 502. Fix: mempool-frontend:v3.0.1 rewrites the generated nginx-mempool.conf to re-resolve the backend per-request via 'resolver' + a variable proxy_pass. Resolver address is read from /etc/resolv.conf (podman aardvark-dns answers on the network gateway, not Docker's 127.0.0.11). Per-location path mapping preserved (ws -> '/', /api/v1 identity via no-URI, /api/ -> /api/v1/ rewrite). Proven on .228: backend IP change now auto-recovers with no reload; the literal-host control still 502s. Migrated the manifest off the retired tx1138 registry to vps2. Also: mempool.bats #74 waited only 180s post-restart (the slow path) and called an undefined 'fail' helper (status 127). Bumped to 300s to match the passing parity probes and emit a real failure instead. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
15 lines
812 B
Docker
15 lines
812 B
Docker
# Archipelago mempool frontend — adds a resilient nginx backend proxy.
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#
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# The only delta vs the upstream image is /patch/entrypoint.sh, which rewrites
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# the generated nginx-mempool.conf to use `resolver` + a variable proxy_pass so
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# the frontend re-resolves the backend (mempool-api) via DNS on every request.
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# Without this, nginx pins the backend IP at startup and serves 502 / "offline"
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# after any backend restart (podman reassigns the IP). See the script header.
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ARG BASE=146.59.87.168:3000/lfg2025/mempool-frontend:v3.0.0
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FROM ${BASE}
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# --chmod keeps the exec bit (build runs as USER 1000, plain COPY lands root:0644
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# → "not executable"). Base USER/ENTRYPOINT/CMD (1000 / /patch/entrypoint.sh /
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# nginx -g "daemon off;") are inherited unchanged.
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COPY --chmod=0755 entrypoint.sh /patch/entrypoint.sh
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