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GitLab cross-site replication Phase 2b: enable Gitaly + workhorse TLS

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Per the approved plan (Istio federation scoped separately, current
NodePort/PeerAuth/cert-manager pattern continues for these 2 remaining
links). Real Let's Encrypt certs (not self-signed) via the same DNS-01
ClusterIssuer used everywhere else - both sites already trust Let's
Encrypt's public CA, no custom CA distribution needed.

- global.gitaly.tls.enabled: adds tls_listen_addr (8076) alongside the
  existing plaintext listener (8075, stays for in-cluster traffic
  that doesn't need it). Requires
  global.praefect.virtualStorages[0].tlsSecretName (chart's own NOTES.txt
  validation rejects the render without it, confirmed live).
- global.workhorse.tls.enabled + global.workhorse.host: Gitaly's [gitlab]
  url (internal-API callback for gitlab-shell hooks) switches from an
  unpublishable *.svc.cluster.local name to a real floating hostname
  (gitlab-internal-api.ha.huskypup.net) that Let's Encrypt CAN certify -
  confirmed live this replaces the plaintext [[listeners]] block with
  [listeners.tls] on the SAME port (8181), not a second port like Gitaly.
- praefect-ha-configmap.yaml (the manually-patched live config) updated
  to tls:// + floating hostnames for all 3 home nodes, so home's own
  Praefect uses the identical addresses it'll hand the VPS as peer
  addresses once Phase 2b's 4th node lands.
- New CoreDNS rewrite for gitlab-internal-api.ha.huskypup.net (same
  local-rewrite pattern as pg-*/gitaly-* already have).

Sequencing note: applying live - Certificates must issue before the
TLS-enabling values land, or Gitaly/webservice pods fail to start
(missing secret for their init container's cert copy).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Scooby Husky
2026-08-22 14:24:13 -05:00
co-authored by Claude Sonnet 5
parent 166ff0ffb7
commit bce3861083
6 changed files with 145 additions and 33 deletions
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infrastructure/coredns/manifests/coredns-configmap.yaml
+5
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@@ -77,6 +77,11 @@ data:
rewrite name gitaly-1.ha.huskypup.net ha-gitaly-1.gitlab.svc.cluster.local
rewrite name gitaly-2.ha.huskypup.net ha-gitaly-2.gitlab.svc.cluster.local
# global.workhorse.host override (apps/gitlab/values.yaml) - every
# Gitaly node's [gitlab] url, home's own included, same local-
# rewrite reasoning as the entries above.
rewrite name gitlab-internal-api.ha.huskypup.net ha-gitlab-internal-api.gitlab.svc.cluster.local
kubernetes cluster.local in-addr.arpa ip6.arpa {
pods insecure
fallthrough in-addr.arpa ip6.arpa