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cc-ci-orchestrator/cc-ci-plan/upstream/mattermost-lts.md
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Upstream sources — mattermost-lts

service image source repo releases / changelog
app mattermost/mattermost-team-edition https://github.com/mattermost/mattermost https://docs.mattermost.com/about/mattermost-changelog.html
postgres postgres https://github.com/postgres/postgres https://www.postgresql.org/docs/release/

Standing notes

  • mattermost-lts tracks the 11.7 ESR (Extended Support Release) = Mattermost's LTS line. The "LTS" concept in Mattermost is ESR; there is NO "10.x LTS line". Release calendar (endoflife.date/mattermost):
    • 10.11 = previous ESR, security support ends 2026-08-15 (~7 weeks) — migrated away 2026-06-19
    • 11.7 = current ESR, supported through 2027-05-15 (~11 months); latest patch: 11.7.7 (2026-07-17)
    • 11.8.x = innovation release (3-month lifecycle, EOL 2026-09-15) — do NOT target
    • 10.12 = innovation release, support EXPIRED 2025-12-15 (do NOT target, despite abra listing 10.12.4)
    • Check the release lifecycle at https://endoflife.date/mattermost before each upgrade run.
    • Next ESR after 11.7 expected ~February 2027 (9-month cadence) The release-11.7 Docker Hub floating tag always points to the latest 11.7.x patch. IMPORTANT: Do NOT use 11.7.0–11.7.2 — they have a schemeid migration bug in the roles table when upgrading from 10.11.17+; use 11.7.3 or later (current: 11.7.7).
    • 2026-08-07 re-check (endoflife.date/api/mattermost.json; GitHub releases API; Docker Hub): Operator (weekly /upgrade-all) directed extending PR #2 to 11.10.0 (newest on the 11.x innovation line, consistent with PR #2's existing line). 11.10.0 is a PRE-RELEASE — GitHub prerelease=True, published 2026-08-04 (rc1 2026-07-17, rc2 2026-07-30, rc3+v11.10.0 2026-08-04); Docker Hub mattermost/mattermost-team-edition:11.10.0 exists (462 MB, pushed 2026-08-04, actively pulled). No detailed release notes published yet (body = "Mattermost Platform Release 11.10.0"). 11.10 cycle not yet on endoflife.date; monthly cadence → EOL ~2026-11-15. Innovation, NOT ESR. This run bumps 11.9.0 → 11.10.0 per operator instruction and flags the pre-release + ESR-vs-innovation choice prominently in the PR body + report. ESR remains 11.7.8 (stable, EOL 2027-05-15) — the real LTS/ESR alternative if the operator wants LTS. Survey-hint correction (again): the 2026-08-07 survey claimed "alternative ESR = 10.12.4"; that is STILL wrong — 10.12 is an EXPIRED innovation release (EOL 2025-12-15, lts:false on endoflife.date); do NOT switch to 10.12.4. 10.11 ESR EOL 2026-08-15 (8 days); upstream main still pins 10.11.22. postgres 15-alpine HELD (major DB bump out of scope for weekly cron).
    • 2026-08-04 re-check (endoflife.date/api/mattermost.json; GitHub releases; Docker Hub): 11.7.8 released 2026-07-31 is the newest 11.7.x ESR patch (ESR supported through 2027-05-15). 11.9.0 (innovation, released 2026-07-08, cycle EOL 2026-10-15 ~10 weeks, NOT ESR) and 11.8.4 (innovation, EOL 2026-09-15) remain innovation releases — the standing guidance for AUTONOMOUS runs is still "do NOT target innovation; track 11.7 ESR." HOWEVER, the 2026-08-03 weekly /upgrade-all operator task explicitly directed a bump to 11.9.0 (the survey target), so this run targets 11.9.0 per operator instruction with the EOL/innovation status flagged in the plan + PR body + report for operator reconsideration. 11.9.0 confirmed real: GitHub tag v11.9.0 (published 2026-07-08, not prerelease), Docker Hub mattermost/mattermost-team-edition:11.9.0 (458 MB, 2026-07-08). Features: Ranked Attributes, ABAC per-action Permission Rules, Program Masking, Azure Blob Storage. abra recipe upgrade lists 11.10.0 highest and 11.9.0 next. PR #2 extended 11.7.8 → 11.9.0 (fast-forward). 10.11 ESR security support ENDS 2026-08-15 (~11 days).
    • 2026-07-24 re-check (endoflife.date/api/mattermost.json; GitHub releases): 11.7.7 released 2026-07-17 is the newest 11.7.x ESR patch — bumped PR #2 11.7.6 → 11.7.7 (ESR security patch, "Low to High severity security fixes", no migrations/breaking changes), !testme GREEN (drone run #1143). 11.7 ESR supported through 2027-05-15; 10.11 ESR security support ENDS 2026-08-15 (~3 weeks) — migrate away. 11.8.4 (innovation, EOL 2026-09-15) and 11.9.x remain innovation releases, NOT ESR — do NOT target.
    • 2026-07-13 re-check (endoflife.date updated 09 Jul 2026): 11.7.6 is still the latest 11.7.x ESR patch (no newer 11.7.x released since 25 Jun 2026). abra lists 11.9.0 as the highest upgrade, but 11.9 is a brand-new innovation release NOT on endoflife.date yet — NOT ESR, do NOT target. 11.8 innovation latest is 11.8.3 (06 Jul 2026), EOL 15 Sep 2026. 10.11 ESR security support ends 15 Aug 2026 (~5 weeks). PR #2 re-verified GREEN with 11.7.6.
    • 2026-06-26 re-check (endoflife.date/mattermost, data 2026-06-27): 11.7.6 released 2026-06-25 (Low–Medium security fixes, no breaking changes / no migrations) is the newest 11.7.x patch — REFRESH target from 11.7.5 → 11.7.6. 10.11 ESR security support ends 2026-08-15 (~7 weeks); 10.12 innovation ENDED 2025-12-15 (do NOT target, despite the survey listing 10.12.4); 11.8 innovation EOL 2026-09-15. GitHub release: https://github.com/mattermost/mattermost/releases/tag/v11.7.6
    • Survey-correction log: the 2026-06-26 orchestrator survey claimed "10.x is LTS, target 10.12.4, 11.x is non-LTS". That is incorrect — Mattermost has no "10.x LTS line"; the LTS concept is ESR, the ESR line jumped 10.11 → 11.7 in May 2026, and 10.12 is an EXPIRED innovation release. Both the 2026-06-19 and 2026-06-22 runs correctly identified 11.7 ESR as the LTS target; this run re-confirms it. The survey's recommendation would have regressed the recipe onto an unsupported branch — DO NOT follow it.
  • postgres: stay on 15-alpine for now. The upgrade to 16-alpine requires a major-version migration (pg_upgrade or dump/restore with operator involvement) because the stack runs with a persistent postgres_data volume. A 16 container against pg15 PGDATA crashes on startup. Major pg bump is a separate operator-guided step.
  • Backup format (as of PR #2 / upcoming 3.0.0+11.7.5 release): pg_backup.sh Docker config on the postgres service. Backup: pg_dump | gzip → backup.sql. Restore: terminate connections, FORCE-drop, recreate DB, reimport dump. DROP DATABASE WITH (FORCE) requires PostgreSQL 13+ — safe on postgres:15-alpine. The previous inline-label approach (no restore hook) was a defect: raw PGDATA restore without a reload was a silent no-op. Fixed in PR #2 (restore fix cherry-picked from PR #1 ci/pg-restore).
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