cookbooks/postgresql/templates/default/postgres_queries.yml.erb

   1 pg_replication:
   2   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"
   3   master: true
   4   metrics:
   5     - lag_seconds:
   6         usage: "GAUGE"
   7         description: "Replication lag behind master in seconds"
   8
   9 pg_postmaster:
  10   query: "SELECT pg_postmaster_start_time as start_time_seconds from pg_postmaster_start_time()"
  11   master: true
  12   metrics:
  13     - start_time_seconds:
  14         usage: "GAUGE"
  15         description: "Time at which postmaster started"
  16 <% if node[:postgresql][:monitor_tables] -%>
  17
  18 pg_stat_user_tables:
  19   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"
  20   metrics:
  21     - datname:
  22         usage: "LABEL"
  23         description: "Name of current database"
  24     - schemaname:
  25         usage: "LABEL"
  26         description: "Name of the schema that this table is in"
  27     - relname:
  28         usage: "LABEL"
  29         description: "Name of this table"
  30     - seq_scan:
  31         usage: "COUNTER"
  32         description: "Number of sequential scans initiated on this table"
  33     - seq_tup_read:
  34         usage: "COUNTER"
  35         description: "Number of live rows fetched by sequential scans"
  36     - idx_scan:
  37         usage: "COUNTER"
  38         description: "Number of index scans initiated on this table"
  39     - idx_tup_fetch:
  40         usage: "COUNTER"
  41         description: "Number of live rows fetched by index scans"
  42     - n_tup_ins:
  43         usage: "COUNTER"
  44         description: "Number of rows inserted"
  45     - n_tup_upd:
  46         usage: "COUNTER"
  47         description: "Number of rows updated"
  48     - n_tup_del:
  49         usage: "COUNTER"
  50         description: "Number of rows deleted"
  51     - n_tup_hot_upd:
  52         usage: "COUNTER"
  53         description: "Number of rows HOT updated (i.e., with no separate index update required)"
  54     - n_live_tup:
  55         usage: "GAUGE"
  56         description: "Estimated number of live rows"
  57     - n_dead_tup:
  58         usage: "GAUGE"
  59         description: "Estimated number of dead rows"
  60     - n_mod_since_analyze:
  61         usage: "GAUGE"
  62         description: "Estimated number of rows changed since last analyze"
  63     - last_vacuum:
  64         usage: "GAUGE"
  65         description: "Last time at which this table was manually vacuumed (not counting VACUUM FULL)"
  66     - last_autovacuum:
  67         usage: "GAUGE"
  68         description: "Last time at which this table was vacuumed by the autovacuum daemon"
  69     - last_analyze:
  70         usage: "GAUGE"
  71         description: "Last time at which this table was manually analyzed"
  72     - last_autoanalyze:
  73         usage: "GAUGE"
  74         description: "Last time at which this table was analyzed by the autovacuum daemon"
  75     - vacuum_count:
  76         usage: "COUNTER"
  77         description: "Number of times this table has been manually vacuumed (not counting VACUUM FULL)"
  78     - autovacuum_count:
  79         usage: "COUNTER"
  80         description: "Number of times this table has been vacuumed by the autovacuum daemon"
  81     - analyze_count:
  82         usage: "COUNTER"
  83         description: "Number of times this table has been manually analyzed"
  84     - autoanalyze_count:
  85         usage: "COUNTER"
  86         description: "Number of times this table has been analyzed by the autovacuum daemon"
  87
  88 pg_statio_user_tables:
  89   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"
  90   metrics:
  91     - datname:
  92         usage: "LABEL"
  93         description: "Name of current database"
  94     - schemaname:
  95         usage: "LABEL"
  96         description: "Name of the schema that this table is in"
  97     - relname:
  98         usage: "LABEL"
  99         description: "Name of this table"
 100     - heap_blks_read:
 101         usage: "COUNTER"
 102         description: "Number of disk blocks read from this table"
 103     - heap_blks_hit:
 104         usage: "COUNTER"
 105         description: "Number of buffer hits in this table"
 106     - idx_blks_read:
 107         usage: "COUNTER"
 108         description: "Number of disk blocks read from all indexes on this table"
 109     - idx_blks_hit:
 110         usage: "COUNTER"
 111         description: "Number of buffer hits in all indexes on this table"
 112     - toast_blks_read:
 113         usage: "COUNTER"
 114         description: "Number of disk blocks read from this table's TOAST table (if any)"
 115     - toast_blks_hit:
 116         usage: "COUNTER"
 117         description: "Number of buffer hits in this table's TOAST table (if any)"
 118     - tidx_blks_read:
 119         usage: "COUNTER"
 120         description: "Number of disk blocks read from this table's TOAST table indexes (if any)"
 121     - tidx_blks_hit:
 122         usage: "COUNTER"
 123         description: "Number of buffer hits in this table's TOAST table indexes (if any)"
 124 <% end -%>
 125
 126 pg_process_idle:
 127   query: |
 128     WITH
 129       metrics AS (
 130         SELECT
 131           state,
 132           application_name,
 133           SUM(EXTRACT(EPOCH FROM (CURRENT_TIMESTAMP - state_change))::bigint)::float AS process_idle_seconds_sum,
 134           COUNT(*) AS process_idle_seconds_count
 135         FROM pg_stat_activity
 136         WHERE state ~ '^idle'
 137         GROUP BY state, application_name
 138       ),
 139       buckets AS (
 140         SELECT
 141           state,
 142           application_name,
 143           le,
 144           SUM(
 145             CASE WHEN EXTRACT(EPOCH FROM (CURRENT_TIMESTAMP - state_change)) <= le
 146               THEN 1
 147               ELSE 0
 148             END
 149           )::bigint AS bucket
 150         FROM
 151           pg_stat_activity,
 152           UNNEST(ARRAY[1, 2, 5, 15, 30, 60, 90, 120, 300]) AS le
 153         GROUP BY state, application_name, le
 154         ORDER BY state, application_name, le
 155       )
 156     SELECT
 157       state,
 158       application_name,
 159       process_idle_seconds_sum as seconds_sum,
 160       process_idle_seconds_count as seconds_count,
 161       ARRAY_AGG(le) AS seconds,
 162       ARRAY_AGG(bucket) AS seconds_bucket
 163     FROM metrics JOIN buckets USING (state, application_name)
 164     GROUP BY 1, 2, 3, 4
 165   master: true
 166   metrics:
 167     - state:
 168         usage: "LABEL"
 169         description: "State"
 170     - application_name:
 171         usage: "LABEL"
 172         description: "Application Name"
 173     - seconds:
 174         usage: "HISTOGRAM"
 175         description: "Idle time of server processes"
 176
 177 pg_unfrozen_ids:
 178   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')"
 179   metrics:
 180     - datname:
 181         usage: "LABEL"
 182         description: "Name of the database"
 183     - xid_age:
 184         usage: "GAUGE"
 185         description: "Age of the oldest unfrozen transaction ID in this database"
 186     - mxid_age:
 187         usage: "GAUGE"
 188         description: "Age of the oldest unfrozen multixact ID in this database"
 189
 190 pg_wal:
 191   query: "SELECT count(*) AS segment_count FROM pg_ls_waldir() WHERE name ~ '^[0-9A-Z]{24}$'"
 192   master: true
 193   metrics:
 194     - segment_count:
 195         usage: "GAUGE"
 196         description: "Number of WAL segments"