PostgreSQL and Patroni

This section lists the alerts for the PoststgreSQL and Patroni services.

• PostgresqlDataPageCorruption

• PostgresqlDeadlocksDetected

• PostgresqlInsufficientWorkingMemory

• PostgresqlPatroniClusterSplitBrain

• PostgresqlPatroniClusterUnlocked

• PostgresqlReplicaDown

• PostgresqlReplicationNonStreamingReplicas

• PostgresqlReplicationPaused

• PostgresqlReplicationSlowWalApplication

• PostgresqlReplicationSlowWalDownload

• PostgresqlReplicationWalArchiveWriteFailing

• PostgresqlTargetDown

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PostgresqlDataPageCorruption

Severity	Critical
Summary	Patroni cluster member is experiencing data page corruption.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Patroni Pod in the {{ $labels.cluster }} cluster fails to calculate the data page checksum due to a possible hardware fault.

PostgresqlDeadlocksDetected

Severity	Warning
Summary	PostgreSQL transactions deadlocks.
Description	The transactions submitted to the {{ $labels.datname }} database in the {{ $labels.cluster }} Patroni cluster in the {{ $labels.namespace }} namespace are experiencing deadlocks.

PostgresqlInsufficientWorkingMemory

Severity	Warning
Summary	Insufficient memory for PostgreSQL queries.
Description	The query data does not fit into working memory of the {{ $labels.pod }} Pod in the {{ $labels.cluster }} Patroni cluster in the {{ $labels.namespace }} namespace.

PostgresqlPatroniClusterSplitBrain

Severity	Critical
Summary	Patroni cluster split-brain detected.
Description	The {{ $labels.cluster }} Patroni cluster in the {{ $labels.namespace }} namespace has multiple primaries, split-brain detected.

PostgresqlPatroniClusterUnlocked

Severity	Major
Summary	Patroni cluster primary node is missing.
Description	The {{ $labels.cluster }} Patroni cluster in the {{ $labels.namespace }} namespace is down due to missing primary node.

PostgresqlReplicaDown

Severity	Warning
Summary	Patroni cluster has replicas with inoperable PostgreSQL.
Description	The {{ $labels.cluster }} Patroni cluster in the {{ $labels.namespace }} namespace has {{ $value }}% of replicas with inoperable PostgreSQL.

PostgresqlReplicationNonStreamingReplicas

Severity	Warning
Summary	Patroni cluster has non-streaming replicas.
Description	The {{ $labels.cluster }} Patroni cluster in the {{ $labels.namespace }} namespace has replicas not streaming segments from the primary node.

PostgresqlReplicationPaused

Severity	Major
Summary	Replication has stopped.
Description	Replication has stopped on the {{ $labels.namespace }}/{{ $labels.pod }} replica Pod in the {{ $labels.cluster }} cluster.

PostgresqlReplicationSlowWalApplication

Severity	Warning
Summary	WAL segment application is slow.
Description	Slow replication while applying WAL segments on the {{ $labels.namespace }}/{{ $labels.pod }} replica Pod in the {{ $labels.cluster }} cluster.

PostgresqlReplicationSlowWalDownload

Severity	Warning
Summary	Streaming replication is slow.
Description	Slow replication while downloading WAL segments for the {{ $labels.namespace }}/{{ $labels.pod }} replica Pod in the {{ $labels.cluster }} cluster.

See also

Patroni replication lag

PostgresqlReplicationWalArchiveWriteFailing

Severity	Major
Summary	Patroni cluster WAL segment writes are failing.
Description	The {{ $labels.namespace }}/{{ $labels.pod }} Patroni Pod in the {{ $labels.cluster }} cluster fails to write replication segments.

PostgresqlTargetDown

Severity	Critical
Summary	Patroni cluster Prometheus target down.
Description	Prometheus fails to scrape metrics from the {{ $labels.pod }} Pod of the {{ $labels.cluster }} cluster on the {{ $labels.node }} node.