pg_replication:
- query: "SELECT EXTRACT(EPOCH FROM (now() - pg_last_xact_replay_timestamp())) AS lag_seconds"
+ query: "SELECT CASE WHEN NOT pg_is_in_recovery() THEN 0 ELSE GREATEST (0, EXTRACT(EPOCH FROM (now() - pg_last_xact_replay_timestamp()))) END AS lag_seconds"
master: true
metrics:
- lag_seconds:
<% if node[:postgresql][:monitor_tables] -%>
pg_stat_user_tables:
- query: "SELECT current_database() datname, schemaname, relname, seq_scan, seq_tup_read, idx_scan, idx_tup_fetch, n_tup_ins, n_tup_upd, n_tup_del, n_tup_hot_upd, n_live_tup, n_dead_tup, n_mod_since_analyze, COALESCE(last_vacuum, '1970-01-01Z'), COALESCE(last_vacuum, '1970-01-01Z') as last_vacuum, COALESCE(last_autovacuum, '1970-01-01Z') as last_autovacuum, COALESCE(last_analyze, '1970-01-01Z') as last_analyze, COALESCE(last_autoanalyze, '1970-01-01Z') as last_autoanalyze, vacuum_count, autovacuum_count, analyze_count, autoanalyze_count FROM pg_stat_user_tables"
+ query: "SELECT current_database() datname, schemaname, relname, seq_scan, seq_tup_read, idx_scan, idx_tup_fetch, n_tup_ins, n_tup_upd, n_tup_del, n_tup_hot_upd, n_live_tup, n_dead_tup, n_mod_since_analyze, COALESCE(last_vacuum, '1970-01-01Z') as last_vacuum, COALESCE(last_autovacuum, '1970-01-01Z') as last_autovacuum, COALESCE(last_analyze, '1970-01-01Z') as last_analyze, COALESCE(last_autoanalyze, '1970-01-01Z') as last_autoanalyze, vacuum_count, autovacuum_count, analyze_count, autoanalyze_count FROM pg_stat_user_tables"
metrics:
- datname:
usage: "LABEL"
description: "Number of buffer hits in this table's TOAST table indexes (if any)"
<% end -%>
-pg_database:
- query: "SELECT pg_database.oid AS datid, pg_database.datname, pg_database_size(pg_database.datname) AS size_bytes FROM pg_database"
- master: true
- cache_seconds: 30
+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:
- - datid:
- usage: "LABEL"
- description: "ID of the database"
- datname:
usage: "LABEL"
description: "Name of the database"
- - size_bytes:
+ - xid_age:
+ usage: "GAUGE"
+ description: "Age of the oldest unfrozen transaction ID in this database"
+ - mxid_age:
usage: "GAUGE"
- description: "Disk space used by the database"
+ description: "Age of the oldest unfrozen multixact ID in this database"