The ACME DNS-01 self-check resolved through CoreDNS and never saw the TXT
record. The wildcard renewal stalled on 2026-09-23 and riotpiao-com-tls
expired on 2026-10-23. Every Cloudflare Tunnel origin then failed with
"x509: certificate has expired or is not yet valid".
Changes:
- cert-manager: pin the self-check to the public resolvers with
--dns01-recursive-nameservers and --dns01-recursive-nameservers-only.
Verified against Let's Encrypt staging: the challenge went valid and the
certificate issued.
- comfyui and forgejo: drop the per-host tls blocks and the
cert-manager.io/cluster-issuer annotations. The wildcard covers both
hosts, and the per-host certificates (comfyui-tls, forgejo-tls) expired
with the wildcard.
- riotpiao-com-cert: document the wildcard as nginx's default certificate
and the zero-downtime renewal path.
Renewal now runs 30 days before expiry, writes the same secret, and nginx
hot-reloads without a pod restart.
Root cause: k8s Service named 'comfyui' auto-injects COMFYUI_PORT=tcp://...
into pod env, clobbering ai-dock's own COMFYUI_PORT variable which expects
a port number. This broke caddy's proxy config, leaving port 8188 dead.
Fix: enableServiceLinks: false, revert to port 8188 (ai-dock default).
Also bump startup probe failureThreshold 60->120 (20min budget for model loading).
rock