feat(alerts): add basic postgresql alerts
Signed-off-by: Raito Bezarius <masterancpp@gmail.com>
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services/monitoring/lgtm/alerts/postgres.yml
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102
services/monitoring/lgtm/alerts/postgres.yml
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groups:
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- name: PostgreSQL
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rules:
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- alert: PostgresqlTableNotAutoVacuumed
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expr: '(pg_stat_user_tables_last_autovacuum > 0) and (time() - pg_stat_user_tables_last_autovacuum) > 60 * 60 * 24 * 10'
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: Postgresql table not auto vacuumed (instance {{ $labels.instance }})
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description: "Table {{ $labels.relname }} has not been auto vacuumed for 10 days\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlTableNotAutoAnalyzed
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expr: '(pg_stat_user_tables_last_autoanalyze > 0) and (time() - pg_stat_user_tables_last_autoanalyze) > 24 * 60 * 60 * 10'
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: Postgresql table not auto analyzed (instance {{ $labels.instance }})
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description: "Table {{ $labels.relname }} has not been auto analyzed for 10 days\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlDeadLocks
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expr: 'increase(pg_stat_database_deadlocks{datname!~"template.*|postgres"}[1m]) > 5'
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: Postgresql dead locks (instance {{ $labels.instance }})
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description: "PostgreSQL has dead-locks\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlHighRollbackRate
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expr: 'sum by (namespace,datname) ((rate(pg_stat_database_xact_rollback{datname!~"template.*|postgres",datid!="0"}[3m])) / ((rate(pg_stat_database_xact_rollback{datname!~"template.*|postgres",datid!="0"}[3m])) + (rate(pg_stat_database_xact_commit{datname!~"template.*|postgres",datid!="0"}[3m])))) > 0.02'
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: Postgresql high rollback rate (instance {{ $labels.instance }})
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description: "Ratio of transactions being aborted compared to committed is > 2 %\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlHighRateStatementTimeout
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expr: 'rate(postgresql_errors_total{type="statement_timeout"}[1m]) > 3'
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for: 0m
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labels:
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severity: critical
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annotations:
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summary: Postgresql high rate statement timeout (instance {{ $labels.instance }})
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description: "Postgres transactions showing high rate of statement timeouts\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlHighRateDeadlock
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expr: 'increase(postgresql_errors_total{type="deadlock_detected"}[1m]) > 1'
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for: 0m
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labels:
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severity: critical
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annotations:
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summary: Postgresql high rate deadlock (instance {{ $labels.instance }})
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description: "Postgres detected deadlocks\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlTooManyDeadTuples
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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'
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for: 2m
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labels:
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severity: warning
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annotations:
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summary: Postgresql too many dead tuples (instance {{ $labels.instance }})
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description: "PostgreSQL dead tuples is too large\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlTooManyLocksAcquired
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expr: '((sum (pg_locks_count)) / (pg_settings_max_locks_per_transaction * pg_settings_max_connections)) > 0.20'
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for: 2m
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labels:
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severity: critical
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annotations:
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summary: Postgresql too many locks acquired (instance {{ $labels.instance }})
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description: "Too many locks acquired on the database. If this alert happens frequently, we may need to increase the postgres setting max_locks_per_transaction.\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlBloatIndexHigh(>80%)
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expr: 'pg_bloat_btree_bloat_pct > 80 and on (idxname) (pg_bloat_btree_real_size > 100000000)'
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for: 1h
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labels:
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severity: warning
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annotations:
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summary: Postgresql bloat index high (> 80%) (instance {{ $labels.instance }})
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description: "The index {{ $labels.idxname }} is bloated. You should execute `REINDEX INDEX CONCURRENTLY {{ $labels.idxname }};`\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlBloatTableHigh(>80%)
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expr: 'pg_bloat_table_bloat_pct > 80 and on (relname) (pg_bloat_table_real_size > 200000000)'
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for: 1h
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labels:
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severity: warning
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annotations:
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summary: Postgresql bloat table high (> 80%) (instance {{ $labels.instance }})
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description: "The table {{ $labels.relname }} is bloated. You should execute `VACUUM {{ $labels.relname }};`\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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- alert: PostgresqlInvalidIndex
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expr: 'pg_genaral_index_info_pg_relation_size{indexrelname=~".*ccnew.*"}'
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for: 6h
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labels:
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severity: warning
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annotations:
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summary: Postgresql invalid index (instance {{ $labels.instance }})
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description: "The table {{ $labels.relname }} has an invalid index: {{ $labels.indexrelname }}. You should execute `DROP INDEX {{ $labels.indexrelname }};`\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
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