Files
selfpost/build/supervisord.conf
T
mix 61f525e2d7 Phase 10: deployment (Apache compose + proxy fragments, CI release) + docs
- deploy/docker-compose.yml: pinned-tag ghcr image, hardened (cap_drop ALL +
  minimal cap_add, no-new-privileges, panel bound to 127.0.0.1 only). Apache
  itself runs on the host (spec 10.5), fragment at deploy/apache/.
- Alternative reverse-proxy fragments: nginx (+certbot sidecar), Caddy
  (automatic ACME), Traefik (+acme.json PEM extraction script).
- .github/workflows/release.yml: tag-triggered ghcr.io publish, version piped
  from the git tag into both the binary ldflags and the image tag (spec 10.1).
- Closed a gap from Phase 1: logrotate was installed but never invoked;
  wired up build/logrotate-mail.conf + logrotate-loop.sh + a supervisor
  program (copytruncate, since postlogd holds mail.log open with nothing to
  signal on rotation).
- README rewritten: site requirements checklist, reverse-proxy comparison,
  DNS setup (server- vs domain-level), IP warmup, backup/restore vs domain
  export/import, fixed-tag rationale, machine requirements.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-15 21:23:19 +03:00

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; SelfPost process supervision (spec 4).
;
; Start ORDER is enforced by priority=: OpenDKIM, then the panel (which opens
; the journal-milter socket), then the Postfix wrapper — which additionally
; blocks until both milter sockets are ready before starting Postfix.
;
; If any managed process exhausts its restart retries (FATAL), the crashexit
; event listener brings the whole container down so Docker's restart policy can
; recreate it cleanly, rather than lingering with a dead component.
[supervisord]
nodaemon=true
user=root
logfile=/dev/null
logfile_maxbytes=0
pidfile=/run/supervisord.pid
loglevel=info
; The control socket is reachable by the shared `selfpost` group so the panel
; (running as the unprivileged `panel` user) can ask supervisord to send
; OpenDKIM a reload signal after it rewrites the DKIM tables (spec 6.2). It is
; still unreachable by world; only root and the two SelfPost services are in the
; group. No HTTP auth is configured because access is gated by socket
; permissions, not the network.
[unix_http_server]
file=/run/supervisor.sock
chown=root:selfpost
chmod=0770
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
[supervisorctl]
serverurl=unix:///run/supervisor.sock
[program:opendkim]
command=/usr/sbin/opendkim -f -x /etc/opendkim.conf
priority=100
autostart=true
autorestart=true
startretries=3
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
[program:panel]
command=/usr/local/bin/panel
user=panel
priority=200
autostart=true
autorestart=true
startretries=3
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
[program:postfix]
command=/usr/local/bin/postfix-wrapper.sh
priority=300
autostart=true
autorestart=true
startretries=3
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
; One-shot reload helper (spec 5.2, 7.2.12). The panel runs unprivileged and
; cannot run `postfix reload` itself, and it cannot signal the Postfix master
; directly: `postfix start-fg` forks a separate master process, so a signal to
; the supervised foreground process never reaches it (unlike OpenDKIM, which
; runs in the foreground as the supervised process itself). Instead the panel
; asks supervisord — over the group-accessible control socket — to run this
; program, which executes the canonical `postfix reload` as root. autostart is
; off (it only runs on demand) and a fast, clean exit is expected, so it never
; trips the crashexit listener.
[program:postfix-reload]
command=/usr/sbin/postfix reload
autostart=false
autorestart=false
startsecs=0
startretries=1
exitcodes=0
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
; Periodic TLS-certificate refresh (spec 5.2 p.4). Runs a daily `postfix reload`
; so certificates the reverse-proxy renews in the read-only mount are picked up.
; Long-running (it loops), runs as root so it can reload Postfix, and never exits
; non-zero, so it neither trips the crashexit listener nor needs restarting.
[program:cert-reload]
command=/usr/local/bin/postfix-cert-reload.sh
priority=400
autostart=true
autorestart=true
startsecs=0
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
; Periodic logrotate for /var/log/mail.log (spec 9, 10: daily, 7-14 files kept
; in the image). Runs as root so logrotate can read/rotate the log; never exits
; non-zero, so it neither trips the crashexit listener nor needs restarting.
[program:logrotate]
command=/usr/local/bin/logrotate-loop.sh
priority=400
autostart=true
autorestart=true
startsecs=0
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0
[eventlistener:crashexit]
command=/usr/local/bin/crashexit.py
events=PROCESS_STATE_FATAL
stderr_logfile=/dev/stderr
stderr_logfile_maxbytes=0