feat: add transaction ID age to postgres_exporter - #2375
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valigula merged 3 commits intoAug 31, 2026
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Pull request overview
Adds a custom postgres_exporter metric to monitor wraparound risk by exporting the maximum age(datfrozenxid) across all databases, deployed via Ansible.
Changes:
- Deploy a new
queries.ymlcontaining thepg_wraparoundcustom query/metric definition. - Copy
queries.ymlinto/opt/postgres_exporter/during exporter provisioning.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| ansible/tasks/internal/postgres-exporter.yml | Copies the new custom queries.yml into the exporter install directory during provisioning. |
| ansible/files/queries.yml | Defines the pg_wraparound extended query exporting max transaction ID age across databases. |
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valigula
marked this pull request as draft
August 21, 2026 15:52
postgres_exporter (v0.15.0, pinned in this repo's Ansible) already ships a database_wraparound collector reading both datfrozenxid and datminmxid from pg_database, covering XID and MultiXactId wraparound risk. It is defaultDisabled (registered via collector.database_wraparound.go), so it needs an explicit --collector.database_wraparound flag to turn on. Supersedes the custom pg_wraparound query added in the previous commits on this branch: that approach only tracked XID age and missed MultiXactId wraparound, a separate, independently-reachable shutdown condition. Mirrors the same pivot in supabase/salt#825. Exposes per-database: - pg_database_wraparound_age_datfrozenxid_seconds (XID age) - pg_database_wraparound_age_datminmxid_seconds (MultiXactId age) Related: INDATA-1261
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hunleyd
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Aug 26, 2026
valigula
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August 27, 2026 15:29
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…pgbackrest-archive-async-spool-path-defaults-onto-the-10gb-root-volume * origin/develop: AMI: Clean up messy apt handling (#2351) feat: enable built-in database_wraparound collector in postgres_exporter (#2375) chore: bump postgres_release to cut fresh AMIs (includes #2399) (#2406) fix : idle and max connection duration timeouts to Envoy HTTP listeners (#2403) fix(cron): revoke TRIGGER on cron.job_run_details with CASCADE (#2399) ci: fix update-flake-lock workflow (app token + update-flake-lock action) (#2281)
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What kind of change does this PR introduce?
feature INDATA-1261
related https://github.com/supabase/salt/pull/825
What is the current behavior?
What is the new behavior?
Add pg_wraparound custom metric to postgres_exporter that tracks the maximum transaction ID age across all databases. This enables proactive monitoring of wraparound risk before it reaches critical thresholds.
Additional context
Test