-pg_replication:
- query: "SELECT EXTRACT(EPOCH FROM (now() - pg_last_xact_replay_timestamp())) AS lag_seconds"
+pg_process_idle:
+ query: |
+ WITH
+ metrics AS (
+ SELECT
+ state,
+ application_name,
+ SUM(EXTRACT(EPOCH FROM (CURRENT_TIMESTAMP - state_change))::bigint)::float AS process_idle_seconds_sum,
+ COUNT(*) AS process_idle_seconds_count
+ FROM pg_stat_activity
+ WHERE state ~ '^idle'
+ GROUP BY state, application_name
+ ),
+ buckets AS (
+ SELECT
+ state,
+ application_name,
+ le,
+ SUM(
+ CASE WHEN EXTRACT(EPOCH FROM (CURRENT_TIMESTAMP - state_change)) <= le
+ THEN 1
+ ELSE 0
+ END
+ )::bigint AS bucket
+ FROM
+ pg_stat_activity,
+ UNNEST(ARRAY[1, 2, 5, 15, 30, 60, 90, 120, 300]) AS le
+ GROUP BY state, application_name, le
+ ORDER BY state, application_name, le
+ )
+ SELECT
+ state,
+ application_name,
+ process_idle_seconds_sum as seconds_sum,
+ process_idle_seconds_count as seconds_count,
+ ARRAY_AGG(le) AS seconds,
+ ARRAY_AGG(bucket) AS seconds_bucket
+ FROM metrics JOIN buckets USING (state, application_name)
+ GROUP BY 1, 2, 3, 4
master: true
metrics:
- - lag_seconds:
- usage: "GAUGE"
- description: "Replication lag behind master in seconds"
-
-pg_postmaster:
- query: "SELECT pg_postmaster_start_time as start_time_seconds from pg_postmaster_start_time()"
- master: true
- metrics:
- - start_time_seconds:
- usage: "GAUGE"
- description: "Time at which postmaster started"
-
-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"
- metrics:
- - datname:
- usage: "LABEL"
- description: "Name of current database"
- - schemaname:
+ - state:
usage: "LABEL"
- description: "Name of the schema that this table is in"
- - relname:
+ description: "State"
+ - application_name:
usage: "LABEL"
- description: "Name of this table"
- - seq_scan:
- usage: "COUNTER"
- description: "Number of sequential scans initiated on this table"
- - seq_tup_read:
- usage: "COUNTER"
- description: "Number of live rows fetched by sequential scans"
- - idx_scan:
- usage: "COUNTER"
- description: "Number of index scans initiated on this table"
- - idx_tup_fetch:
- usage: "COUNTER"
- description: "Number of live rows fetched by index scans"
- - n_tup_ins:
- usage: "COUNTER"
- description: "Number of rows inserted"
- - n_tup_upd:
- usage: "COUNTER"
- description: "Number of rows updated"
- - n_tup_del:
- usage: "COUNTER"
- description: "Number of rows deleted"
- - n_tup_hot_upd:
- usage: "COUNTER"
- description: "Number of rows HOT updated (i.e., with no separate index update required)"
- - n_live_tup:
- usage: "GAUGE"
- description: "Estimated number of live rows"
- - n_dead_tup:
- usage: "GAUGE"
- description: "Estimated number of dead rows"
- - n_mod_since_analyze:
- usage: "GAUGE"
- description: "Estimated number of rows changed since last analyze"
- - last_vacuum:
- usage: "GAUGE"
- description: "Last time at which this table was manually vacuumed (not counting VACUUM FULL)"
- - last_autovacuum:
- usage: "GAUGE"
- description: "Last time at which this table was vacuumed by the autovacuum daemon"
- - last_analyze:
- usage: "GAUGE"
- description: "Last time at which this table was manually analyzed"
- - last_autoanalyze:
- usage: "GAUGE"
- description: "Last time at which this table was analyzed by the autovacuum daemon"
- - vacuum_count:
- usage: "COUNTER"
- description: "Number of times this table has been manually vacuumed (not counting VACUUM FULL)"
- - autovacuum_count:
- usage: "COUNTER"
- description: "Number of times this table has been vacuumed by the autovacuum daemon"
- - analyze_count:
- usage: "COUNTER"
- description: "Number of times this table has been manually analyzed"
- - autoanalyze_count:
- usage: "COUNTER"
- description: "Number of times this table has been analyzed by the autovacuum daemon"
+ description: "Application Name"
+ - seconds:
+ usage: "HISTOGRAM"
+ description: "Idle time of server processes"
-pg_statio_user_tables:
- query: "SELECT current_database() datname, schemaname, relname, heap_blks_read, heap_blks_hit, idx_blks_read, idx_blks_hit, toast_blks_read, toast_blks_hit, tidx_blks_read, tidx_blks_hit FROM pg_statio_user_tables"
- metrics:
- - datname:
- usage: "LABEL"
- description: "Name of current database"
- - schemaname:
- usage: "LABEL"
- description: "Name of the schema that this table is in"
- - relname:
- usage: "LABEL"
- description: "Name of this table"
- - heap_blks_read:
- usage: "COUNTER"
- description: "Number of disk blocks read from this table"
- - heap_blks_hit:
- usage: "COUNTER"
- description: "Number of buffer hits in this table"
- - idx_blks_read:
- usage: "COUNTER"
- description: "Number of disk blocks read from all indexes on this table"
- - idx_blks_hit:
- usage: "COUNTER"
- description: "Number of buffer hits in all indexes on this table"
- - toast_blks_read:
- usage: "COUNTER"
- description: "Number of disk blocks read from this table's TOAST table (if any)"
- - toast_blks_hit:
- usage: "COUNTER"
- description: "Number of buffer hits in this table's TOAST table (if any)"
- - tidx_blks_read:
- usage: "COUNTER"
- description: "Number of disk blocks read from this table's TOAST table indexes (if any)"
- - tidx_blks_hit:
- usage: "COUNTER"
- description: "Number of buffer hits in this table's TOAST table indexes (if any)"
-
-pg_database:
- query: "SELECT pg_database.oid AS datid, pg_database.datname, pg_database_size(pg_database.datname) AS size_bytes FROM pg_database"
+pg_wal:
+ query: "SELECT count(*) AS segment_count FROM pg_ls_waldir() WHERE name ~ '^[0-9A-Z]{24}$'"
master: true
- cache_seconds: 30
metrics:
- - datid:
- usage: "LABEL"
- description: "ID of the database"
- - datname:
- usage: "LABEL"
- description: "Name of the database"
- - size_bytes:
+ - segment_count:
usage: "GAUGE"
- description: "Disk space used by the database"
+ description: "Number of WAL segments"
projects / chef.git / blobdiff