Installation Prometheus-postgres-exporter #53
6 changed files with 355 additions and 77 deletions
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@ -18,8 +18,33 @@
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mode: u=r,g=r,o=
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loop:
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- prometheus.yml
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- alert.rules.yml
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notify: Restart Prometheus
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- name: Creates directory for alerts
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file:
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pz2891 marked this conversation as resolved
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path: /etc/prometheus/alerts
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state: directory
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- name: Remove old files
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file:
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path: "/etc/prometheus/{{ item }}"
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state: absent
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with_items:
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- alerts.rules.yml
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- django.rules.yml
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- name: Configure Prometheus alerts
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template:
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src: "{{ item }}.j2"
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dest: "/etc/prometheus/alerts/{{ item }}"
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owner: prometheus
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group: prometheus
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mode: u=r,g=r,o=
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loop:
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- server.rules.yml
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- django.rules.yml
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- ups.rules.yml
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- postgres.rules.yml
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notify: Restart Prometheus
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- name: Make Prometheus snmp-exporter listen on localhost only
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219
roles/prometheus/templates/postgres.rules.yml.j2
Normal file
219
roles/prometheus/templates/postgres.rules.yml.j2
Normal file
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@ -0,0 +1,219 @@
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---
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{{ ansible_managed | comment }}
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{% macro raw(string) -%}
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{{ "{{" }} {{ string }} {{ "}}" }}
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{%- endmacro %}
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groups:
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- name: postgres.rules
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rules:
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- alert: PostgresqlDown
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expr: pg_up == 0
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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: Serveur Postgresql down (instance {{ raw('$labels.instance') }})
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- alert: PostgresqlRestarted
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expr: time() - pg_postmaster_start_time_seconds < 60
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for: 0m
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labels:
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severity: critical
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annotations:
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summary: Serveur Postgresql redémarré (instance {{ raw('$labels.instance') }})
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- alert: PostgresqlExporterError
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expr: pg_exporter_last_scrape_error > 0
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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: Erreur dans l'exporter Postgresql (instance {{ raw('$labels.instance') }})
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- alert: PostgresqlReplicationLag
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expr:
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pg_replication_lag > 30
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and
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ON(instance) pg_replication_is_replica == 1
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for: 0m
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labels:
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severity: critical
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annotations:
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summary: >-
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Réplication Postgresql lag ({{ raw('$value') }} > 30s)
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname')}} )
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- alert: PostgresqlTableNotVaccumed
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expr:
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time() - pg_stat_user_tables_last_autovacuum
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> 60 * 60 * 24
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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: >-
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La table n'a pas été aspirée depuis 24h
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(Instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }} )
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- alert: PostgresqlTableNotAnalyzed
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expr:
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time() - pg_stat_user_tables_last_autoanalyze
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> 60 * 60 * 24
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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: >-
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Table non-analysée depuis 24h
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }})
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- alert: PostgresqlTooManyConnections
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expr:
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(
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sum by (datname)
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(pg_stat_activity_count{datname!~"template.*|postgres"})
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) * 100
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> pg_settings_max_connections * 80
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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: >-
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PostgreSQL a trop de connexions
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({{ raw('$value | printf "%.1f"') }} > 80%)
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }})
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- alert: PostgresqlDeadLocks
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expr: increase(pg_stat_database_deadlocks{datname!~"template.*|postgres"}[1m]) > 5
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: >-
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PostgreSQL a des cadenas morts
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }} )
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- alert: PostgresqlSlowQueries
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expr: pg_slow_queries > 0
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for: 2m
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labels:
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severity: warning
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annotations:
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summary: >-
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Présence de requêtes lentes (slow-queries)
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }} )
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- alert: PostgresqlHighRollbackRate
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expr:
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(
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rate(pg_stat_database_xact_rollback{datname!~"template.*"}[3m]) /
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rate(pg_stat_database_xact_commit{datname!~"template.*"}[3m])
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) * 100
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> 2
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: >-
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Postgresql a un taux de retour en arrière (rollback) élevé
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }}, value {{ raw('$value | printf "%.1f"') }} %)
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- alert: PostgresqlWaleReplicationStopped
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expr: rate(pg_xlog_position_bytes[1m]) == 0
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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: >-
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Réplication de Postgresql WALE stopée
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }} )
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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: >-
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Beaucoup de requêtes Postgresql sont timeout
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }}, value {{ raw('$value | printf "%.1f"') }} )
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- alert: PostgresqlHighRateDeadlock
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expr: increase(postgresql_errors_total{type="deadlock_detected"}[1m]) > 1
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for: 0m
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labels:
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severity: critical
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annotations:
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summary: >-
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Postgresql a un fort taux de deadlock
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }}, value {{ raw('$value | printf "%.1f"') }} )
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# - alert: PostgresqlReplicationLagBytes
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# expr:
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# (pg_xlog_position_bytes and pg_replication_is_replica == 0)
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# - GROUP_RIGHT(instance) (pg_xlog_position_bytes and pg_replication_is_replica == 1)
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# > 1e+09
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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: La réplication Postgresql a des octets de retard (instance {{ raw('$labels.name') }}, value {{ raw('$value') }} )
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pz2891 marked this conversation as resolved
jeltz
commented
Idem (instance superflue). Idem (instance superflue).
Mettre "database" et "value" en français ?
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- alert: PostgresqlTooManyDeadTuples
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expr:
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(
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(pg_stat_user_tables_n_dead_tup > 10000)
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/ (pg_stat_user_tables_n_live_tup + pg_stat_user_tables_n_dead_tup)
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) >= 0.1 unless ON(instance) (pg_replication_is_replica == 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: >-
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Les tuples morts PostgreSQL sont trop volumineux
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }}, value {{ raw('$value | printf "%.1f"') }} )
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- alert: PostgresqlSplitBrain
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expr: count(pg_replication_is_replica == 0) != 1
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for: 0m
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labels:
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severity: critical
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annotations:
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summary: >-
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Split Brain, trop de bases de données Postgresql primaires en mode lecture-écriture
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }}, value {{ raw('$value') }} )
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- alert: PostgresqlPromotedNode
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expr:
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pg_replication_is_replica
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and
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changes(pg_replication_is_replica[1m]) > 0
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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: >-
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Le serveur de secours PostgreSQL a été promu comme nœud principal
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(instance {{ raw('$labels.instance') }}, database {{ raw('$labels.datname') }}, value {{ raw('$value') }})
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- alert: PostgresqlTooManyLocksAcquired
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expr:
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(
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(sum (pg_locks_count))
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/ (pg_settings_max_locks_per_transaction * pg_settings_max_connections)
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) * 100 > 20
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for: 2m
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labels:
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severity: critical
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annotations:
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summary: >-
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Trop de verrous acquis sur la base de données.
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Si cette alerte se produit fréquemment, nous devrons peut-être augmenter
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le paramètre postgres max_locks_per_transaction
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(instance {{ raw('$labels.instance') }}, value = {{ raw('$value | printf "%.1f"') }} )
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...
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@ -20,8 +20,7 @@ alerting:
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# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
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rule_files:
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- "alert.rules.yml" # Monitoring alerts, this is the file you may be searching!
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- "django.rules.yml" # Custom rules specific for Django project monitoring
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- "alerts/*.yml" # Monitoring alerts, this is the file you may be searching!
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# A scrape configuration containing exactly one endpoint to scrape:
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# Here it's Prometheus itself.
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@ -7,7 +7,7 @@
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groups:
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- name: alert.rules
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- name: server.rules
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rules:
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- alert: InstanceDown
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@ -149,78 +149,5 @@ groups:
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summary: >
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Charge à {{ raw('$value') }}
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- alert: UpsOutputSourceChanged
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expr: upsOutputSource != 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: >-
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Source d'alimentation changée
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- alert: UpsBatteryStatus
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expr: upsBatteryStatus == 3
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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: >-
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État de la batterie faible
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- alert: UpsBatteryStatus
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expr: upsBatteryStatus == 4
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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: >-
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État de la batterie critique
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- alert: UpsHighLoad
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expr: upsOutputPercentLoad > 70
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for: 3m
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labels:
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severity: critical
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annotations:
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summary: >-
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Charge de {{ raw('$value | printf "%.1f"') }}%
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- alert: UpsWrongInputVoltage
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expr: (upsInputVoltage < 210) or (upsInputVoltage > 250)
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: >-
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Tension d'entrée de {{ raw('$value') }}V
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- alert: UpsWrongOutputVoltage
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expr: >-
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abs(upsInputVoltage - avg_over_time(upsOutputVoltage[1d]))
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< 3 * stddev_over_time(upsOutputVoltage[1d])
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: >-
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Tension de sortie de {{ raw('$value') }}V
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- alert: UpsTimeRemaining
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expr: upsEstimatedMinutesRemaining < 8
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for: 0m
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labels:
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severity: warning
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annotations:
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summary: >-
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Autonomie restante de {{ raw('$value') }} min
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- alert: UpsTimeRemaining
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expr: upsEstimatedMinutesRemaining < 5
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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: >-
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Autonomie restante de {{ raw('$value') }} min
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...
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87
roles/prometheus/templates/ups.rules.yml.j2
Normal file
87
roles/prometheus/templates/ups.rules.yml.j2
Normal file
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@ -0,0 +1,87 @@
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---
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{{ ansible_managed | comment }}
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{% macro raw(string) -%}
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{{ "{{" }} {{ string }} {{ "}}" }}
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{%- endmacro %}
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groups:
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- name: ups.rules
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rules:
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- alert: UpsOutputSourceChanged
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expr: upsOutputSource != 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: >-
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Source d'alimentation changée
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- alert: UpsBatteryStatus
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expr: upsBatteryStatus == 3
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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: >-
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État de la batterie faible
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- alert: UpsBatteryStatus
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expr: upsBatteryStatus == 4
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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: >-
|
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État de la batterie critique
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|
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- alert: UpsHighLoad
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expr: upsOutputPercentLoad > 70
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for: 3m
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labels:
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severity: critical
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annotations:
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summary: >-
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Charge de {{ raw('$value | printf "%.1f"') }}%
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- alert: UpsWrongInputVoltage
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expr: (upsInputVoltage < 210) or (upsInputVoltage > 250)
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for: 5m
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labels:
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severity: warning
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annotations:
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summary: >-
|
||||
Tension d'entrée de {{ raw('$value') }}V
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- alert: UpsWrongOutputVoltage
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expr: >-
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abs(upsInputVoltage - avg_over_time(upsOutputVoltage[1d]))
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< 3 * stddev_over_time(upsOutputVoltage[1d])
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for: 5m
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labels:
|
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severity: warning
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annotations:
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summary: >-
|
||||
Tension de sortie de {{ raw('$value') }}V
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||||
|
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- alert: UpsTimeRemaining
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expr: upsEstimatedMinutesRemaining < 8
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for: 0m
|
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labels:
|
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severity: warning
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||||
annotations:
|
||||
summary: >-
|
||||
Autonomie restante de {{ raw('$value') }} min
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|
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- alert: UpsTimeRemaining
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expr: upsEstimatedMinutesRemaining < 5
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for: 0m
|
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labels:
|
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severity: critical
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annotations:
|
||||
summary: >-
|
||||
Autonomie restante de {{ raw('$value') }} min
|
||||
|
||||
...
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21
roles/prometheus_postgres/tasks/main.yml.save
Normal file
21
roles/prometheus_postgres/tasks/main.yml.save
Normal file
|
@ -0,0 +1,21 @@
|
|||
---
|
||||
- name: Install Prometheus postgres-exporter
|
||||
apt:
|
||||
update_cache: true
|
||||
name: prometheus-postgres-exporter
|
||||
register: apt_result
|
||||
retries: 3
|
||||
until: apt_result is succeeded
|
||||
when:
|
||||
- ansible_lsb.codename != 'bullseye'
|
||||
|
||||
# Doesn't work on Debian Stretch with the old prometheus package
|
||||
- name: Make Prometheus node-exporter listen on adm only
|
||||
lineinfile:
|
||||
path: /etc/default/prometheus-node-exporter
|
||||
regexp: '^ARGS='
|
||||
line: |
|
||||
ARGS="--web.listen-address={{ ansible_hostname }}.adm.auro.re:9100"
|
||||
notify: Restart prometheus-node-exporter
|
||||
|
||||
git push --set-upstream origin add_ups_231
|
Loading…
Reference in a new issue
Ça pourrait être bien de préciser le propriétaire et le groupe du dossier.