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Alexander KukushkinandGitHub
c12fe4146d
If the cluster is stable (no nodes are joining/leaving/lagging) we want to run at most one monitor query per every HA loop. So far it worker perfectly except when synchronous_mode is enabled, where we run two additional queries: 1. SHOW synchronous_mode 2. SELECT ... FROM pg_stat_replication In order to solve it, we will include these "queries" to the common monitoring query is synchronous_mode is enabled. In addition to that make sure that `synchronous_standby_names` is reset on replicas that used to be a primary and avoid using replicas which are not in the 'running' state. P.S.: in the monitoring query we also extract the current value of synchronous_standby_names, because it will be useful for the quorum commit feature. Close https://github.com/zalando/patroni/issues/2469