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|
---
groups:
- name: Postgres
rules:
- alert: PostgresqlDown
expr: >-
pg_up == 0
for: 0m
labels:
severity: critical
annotations:
summary: PostgreSQL is down at {{ $labels.instance }}.
description: |-
PostgreSQL instance is down.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlRestarted
expr: >-
time() - pg_postmaster_start_time_seconds < 60
for: 0m
labels:
severity: critical
annotations:
summary: PostgreSQL restarted at {{ $labels.instance }}.
description: |-
PostgreSQL restarted.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlExporterError
expr: >-
pg_exporter_last_scrape_error > 0
for: 0m
labels:
severity: critical
annotations:
summary: PostgreSQL exporter errors at {{ $labels.instance }}.
description: |-
PostgreSQL exporter is showing errors.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlTableNotAutoVacuumed
expr: >-
(pg_stat_user_tables_last_autovacuum > 0)
and
(time() - pg_stat_user_tables_last_autovacuum)
> 60 * 60 * 24 * 10
for: 0m
labels:
severity: warning
annotations:
summary: PostgreSQL table not auto vacuumed at {{ $labels.instance }}.
description: |-
Table {{ $labels.relname }} has not been auto vacuumed for 10 days.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlTableNotAutoAnalyzed
expr: >-
(pg_stat_user_tables_last_autoanalyze > 0)
and
(time() - pg_stat_user_tables_last_autoanalyze)
> 24 * 60 * 60 * 10
for: 0m
labels:
severity: warning
annotations:
summary: PostgreSQL table not auto analyzed at {{ $labels.instance }}.
description: |-
Table {{ $labels.relname }} has not been auto analyzed for 10 days.
VALUE = {{ $value }}
LABELS = {{ $labels }}"
- alert: PostgresqlTooManyConnections
expr: >-
sum by (datname) (
pg_stat_activity_count{datname!~"template.*|postgres"}
) > pg_settings_max_connections * 0.8
for: 2m
labels:
severity: warning
annotations:
summary: PostgreSQL with too many connections at {{ $labels.instance }}.
description: |-
PostgreSQL instance {{ $labels.instance }} has too many connections.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlNotEnoughConnections
expr: >-
sum by (datname) (
pg_stat_activity_count{datname!~"template.*|postgres"}
) < 1
for: 2m
labels:
severity: warning
annotations:
summary: PostgreSQL with not enough connections at {{ $labels.instance }}.
description: |-
PostgreSQL instance {{ $labels.instance }} should have more connections.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlDeadLocks
expr: >-
increase(
pg_stat_database_deadlocks{datname!~"template.*|postgres"}[1m]
) > 5
for: 0m
labels:
severity: warning
annotations:
summary: PostgreSQL dead-locks at instance {{ $labels.instance }}.
description: |-
PostgreSQL shows dead-locks.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlHighRollbackRate
expr: >-
sum by (namespace,datname)
(
(rate(pg_stat_database_xact_rollback{datname!~"template.*|postgres|dendrite",datid!="0"}[3m]))
/
(
(rate(pg_stat_database_xact_rollback{datname!~"template.*|postgres|dendrite",datid!="0"}[3m]))
+
(rate(pg_stat_database_xact_commit{datname!~"template.*|postgres|dendrite",datid!="0"}[3m]))
)
)
> 0.10
for: 0m
labels:
severity: warning
annotations:
summary: PostgreSQL at a high rollback rate at {{ $labels.instance }}.
description: |-
Ratio of transactions being aborted compared to committed is too big.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlCommitRateLow
expr: >-
rate(pg_stat_database_xact_commit[1m])
< 10
for: 2m
labels:
severity: critical
annotations:
summary: PostgreSQL commit rate low at instance {{ $labels.instance }}.
description: |-
PostgreSQL seems to be processing very few transactions.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlLowXidConsumption
expr: >-
rate(pg_txid_current[1m])
< 5
for: 2m
labels:
severity: warning
annotations:
summary: PostgreSQL low XID consumption at instance {{ $labels.instance }}.
description: |-
PostgreSQL seems to be consuming transaction IDs very slowly.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlHighRateStatementTimeout
expr: >-
rate(postgresql_errors_total{type="statement_timeout"}[1m])
> 3
for: 0m
labels:
severity: critical
annotations:
summary: PostgreSQL high rate statement timeout (instance {{ $labels.instance }})
description: |-
PostgreSQL transactions showing high rate of statement timeouts.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlHighRateDeadlock
expr: >-
increase(postgresql_errors_total{type="deadlock_detected"}[1m])
> 1
for: 0m
labels:
severity: critical
annotations:
summary: PostgreSQL high rate dead-lock at {{ $labels.instance }}.
description: |-
PostgreSQL has detected dead-locks.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlUnusedReplicationSlot
expr: >-
pg_replication_slots_active == 0
for: 1m
labels:
severity: warning
annotations:
summary: PostgreSQL unused replication slot at {{ $labels.instance }}.
description: |-
Unused replication slots.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlTooManyDeadTuples
expr: >-
(
(pg_stat_user_tables_n_dead_tup > 10000)
/
(pg_stat_user_tables_n_live_tup + pg_stat_user_tables_n_dead_tup)
)
>= 0.1
for: 2m
labels:
severity: warning
annotations:
summary: PostgreSQL too many dead tuples at {{ $labels.instance }}.
description: |-
PostgreSQL number of dead tuples is too large.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlSslCompressionActive
expr: >-
sum(pg_stat_ssl_compression) > 0
for: 0m
labels:
severity: critical
annotations:
summary: PostgreSQL SSL compression active at {{ $labels.instance }}.
description: |-
Database connections with an SSL compression is enabled. This may add a significant jitter in the replication delay.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlTooManyLocksAcquired
expr: >-
(
(sum (pg_locks_count))
/
(pg_settings_max_locks_per_transaction * pg_settings_max_connections)
)
> 0.20
for: 2m
labels:
severity: critical
annotations:
summary: PostgreSQL too many locks acquired at {{ $labels.instance }}.
description: |-
Too many locks acquired on the database.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlBloatIndexHigh
expr: >-
pg_bloat_btree_bloat_pct > 80
and
on (idxname) (pg_bloat_btree_real_size > 100000000)
for: 1h
labels:
severity: warning
annotations:
summary: PostgreSQL index bloat high at {{ $labels.instance }}.
description: |-
The index {{ $labels.idxname }} is bloated. You should execute `REINDEX INDEX CONCURRENTLY {{ $labels.idxname }};`.
VALUE = {{ $value }}
LABELS = {{ $labels }}
- alert: PostgresqlBloatTableHigh
expr: >-
pg_bloat_table_bloat_pct > 80
and
on (relname) (pg_bloat_table_real_size > 200000000)
for: 1h
labels:
severity: warning
annotations:
summary: PostgreSQL table bloat high at instance {{ $labels.instance }}.
description: |-
The table {{ $labels.relname }} is bloated. You should execute `VACUUM {{ $labels.relname }};`.
VALUE = {{ $value }}
LABELS = {{ $labels }}
|
