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Retire Prometheus Compose stack and document cleanup

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Fabio Scotto di Santolo
2026-10-03 13:44:57 +02:00
parent 7bc7f0e645
commit 755f24bc72
15 changed files with 332 additions and 50 deletions
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docs/atlas-gitea-migration.md
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@@ -1,8 +1,13 @@
# Gitea migration from Prometheus to Atlas
This records the staged migration and its observed partial cutover. Gitea is
temporary on Atlas until Uranus; NPM remains on Prometheus. Preserve the old
Prometheus data, but do not restart its stale Gitea after Atlas accepts writes.
temporary on Atlas until Uranus; NPM remains on Prometheus. On 2026-10-03
the operator explicitly approved removal of the old Prometheus Gitea data,
SSH fragment and final-export helper. NPM now uses a rootful Quadlet with no
installed Compose fallback. The source-retention and rollback steps below
are historical migration gates, not current recovery instructions.
Existing backup archives were preserved; use current Atlas data and verified
backups for recovery. Do not recreate or restart stale source Gitea.
## Observed source before cutover and chosen topology (2026-10-01)
@@ -139,6 +144,10 @@ or credentials were changed. The
secondary hostname `git.ov-ad3410.infomaniak.ch` did not resolve from Ikaros
and had no generated NPM config file at the time of inspection.
On 2026-10-03 the operator retired this unused secondary hostname. Its NPM
Proxy Host was already soft-deleted; Ansible now declares only
`git.fscotto.duckdns.org` and removes the secondary runtime override.
Prometheus' public TCP/2222 socket proxies to Atlas without changing admin
SSH/22. The local socket presents the preserved Gitea ED25519 host key, but
an external TCP/2222 connection from Ikaros initially timed out. During that