# Custom postgres_exporter queries (Alloy prometheus.exporter.postgres custom_queries_config_path).
# Metric name = <key>_<metric>: pg_is_wal_replay_paused (used by the DbReplicationLag rule, design 4.3).
pg_is_wal_replay:
  query: "SELECT CASE WHEN pg_is_in_recovery() AND pg_is_wal_replay_paused() THEN 1 ELSE 0 END AS paused"
  master: true
  metrics:
    - paused:
        usage: "GAUGE"
        description: "1 when this server is a replica and WAL replay is paused"