From: Tom Hughes <tom@compton.nu>
Date: Tue, 2 Mar 2021 18:24:22 +0000 (+0000)
Subject: Add monitoring for unfrozen IDs in postgres databases
X-Git-Url: https://git.openstreetmap.org./chef.git/commitdiff_plain/413c1c7fc1a2954eca448a0c78de1272f3029609?ds=inline;hp=-c

Add monitoring for unfrozen IDs in postgres databases
---

413c1c7fc1a2954eca448a0c78de1272f3029609
diff --git a/cookbooks/postgresql/templates/default/postgres_queries.yml.erb b/cookbooks/postgresql/templates/default/postgres_queries.yml.erb
index c2fc048c8..f513b33e7 100644
--- a/cookbooks/postgresql/templates/default/postgres_queries.yml.erb
+++ b/cookbooks/postgresql/templates/default/postgres_queries.yml.erb
@@ -137,3 +137,16 @@ pg_database:
     - size_bytes:
         usage: "GAUGE"
         description: "Disk space used by the database"
+
+pg_unfrozen_ids:
+  query: "SELECT current_database() AS datname, max(age(relfrozenxid)) AS xid_age, max(mxid_age(relminmxid)) AS mxid_age FROM pg_class WHERE relkind IN ('r', 'm')"
+  metrics:
+    - datname:
+        usage: "LABEL"
+        description: "Name of the database"
+    - xid_age:
+        usage: "GAUGE"
+        description: "Age of the oldest unfrozen transaction ID in this database"
+    - mxid_age:
+        usage: "GAUGE"
+        description: "Age of the oldest unfrozen multixact ID in this database"