Files
computer-playbook/compose/package-cache-frontend/README.md
T
kevinveenbirkenbachandClaude Opus 4.7 eb45f0ffaf feat(cache): inner-build override + TTL env-var + SPOT docs
Extend the local cache stack with three independent capabilities:

1. Inner-`dockerd` build coverage for HTTP-only package mirrors.
   `roles/sys-svc-compose/files/compose.py` (the runner's `compose`
   wrapper) auto-generates a transient `compose.cache.override.yml`
   per app when `INFINITO_PACKAGE_CACHE_FRONTEND_IP` is exported. The
   override pins `build.extra_hosts` for `deb.debian.org`,
   `archive.ubuntu.com`, and `security.ubuntu.com` to the frontend.
   `pull.py` now delegates to the wrapper so build/pull operations see
   the same `-f` set the wrapper auto-detects. nginx in the frontend
   gains a port-80 listener with path rewrites for those hostnames,
   and `package.sh` registers two new Nexus proxies
   (`apt-debian-security`, `apt-ubuntu-security`) for the security
   suites whose upstream URL prefix differs from the main archive.

   Alpine is intentionally excluded from the inner-build extra_hosts:
   3.18+ defaults to HTTPS, and inner-`dockerd` build containers do
   not import the frontend CA. Routing apk through the frontend would
   trip TLS verification.

2. General cache freshness env-var. `scripts/meta/env/cache/package.sh`
   exports `INFINITO_PACKAGE_CACHE_MAX_AGE_MIN` (default `129600`,
   i.e. 90 days). The bootstrap helper consumes it for every Nexus
   proxy's `contentMaxAge`, `metadataMaxAge`, and
   `negativeCache.timeToLive`, replacing the previous 1440-minute
   literal. Lower the value when chasing fast-moving upstreams.

3. SPOT cache documentation at `docs/contributing/environment/cache.md`.
   `compose.yml.md`, `variables.md`, the per-service READMEs, and
   `requirements/012-...` now link to it instead of restating the
   stack's behaviour. Net documentation lines drop substantially while
   the cache page becomes the single user-facing reference.

Also: code-comment cleanup per `docs/contributing/documentation.md`
guidelines across all touched .py / .sh / .yml files. Multi-paragraph
docstrings, banner separators, and restate-the-obvious comments are
removed; one-line WHY comments remain where the rationale is not
already visible in the code.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-30 01:08:41 +02:00

665 B

Package-Cache Frontend (TLS-terminating reverse proxy) 🔐

TLS-terminating reverse proxy in front of the Sonatype Nexus 3 OSS package-cache service. Owns the real upstream package-manager hostnames via DNS-hijack so clients reach the cache transparently.

For services, activation, coverage, and operations of the local cache stack, see cache.md.

Files 📄

  • upstreams.conf: nginx server-blocks. HTTPS (port 443) per hostname for runner-side traffic, HTTP (port 80) for inner-dockerd Dockerfile builds. Bind-mounted at /etc/nginx/conf.d/upstreams.conf.