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Improve PostgreSQL replication lag detection #395

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Merged
merged 1 commit into from
Dec 24, 2020
Merged

Improve PostgreSQL replication lag detection #395

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2 changes: 1 addition & 1 deletion queries.yaml
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
pg_replication:
query: "SELECT EXTRACT(EPOCH FROM (now() - pg_last_xact_replay_timestamp())) as lag"
query: "SELECT CASE WHEN NOT pg_is_in_recovery() THEN 0 ELSE GREATEST (0, EXTRACT(EPOCH FROM (now() - pg_last_xact_replay_timestamp()))) END AS lag"
master: true
metrics:
- lag:
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