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Add edge stack: second ingress path + dual-path DNS failover

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Cloudflare's tunnel edge-pool assignment can blackhole the site for whole
regions (2026-10-10: tunnel hostnames served from an unreachable anycast
range for hours). This adds an independent path and the automation that
keeps occupymedia.cc reachable when either path is sick:

- nginx edge mirroring the tunnel ingress (app/api/tube/chat/ping), LE
  wildcard via dns-01, twice-daily renewal
- DOCKER-USER firewall: 80/443 restricted to Cloudflare ranges (CF mode)
  or OPEN for grey-cloud mode via firewall.mode
- edge-watcher (60s systemd timer): dynamic public-IP sync, dual-path
  health checks, DNS failover TUNNEL<->ORIGIN/GREY with hysteresis,
  gated by EDGE_ENABLED
- ping.occupymedia.cc sacrificial probe host for activation
- deployment runbook in README.md; credential files shipped as .example
This commit is contained in:
glass beadian 2026-10-10 21:22:15 +00:00
parent aa5e262f3a
commit 9365b561b2
12 changed files with 438 additions and 0 deletions
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infra/occupymedia/edge/cloudflare.ini.example Normal file
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dns_cloudflare_api_token = <CLOUDFLARE_API_TOKEN>