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HOWTO: Provision PostgreSQL HA with pgBackRest and Patroni

The PostgreSQL HA reference path applies the HybridOps database-availability contract through a primary, streaming replica, pgBackRest repository, and Patroni-managed failover. This HOWTO covers module inputs, DCS integration, preflight, ordered deployment, and cluster-state verification from the run record. The same contract continues into the DR failover and failback paths.

What this covers:

  • PostgreSQL HA cluster provisioning via platform/onprem/postgresql-ha@v1 with Patroni and pgBackRest
  • Module input map: node count, DCS backend, replication slots, and pgBackRest repository target
  • Post-deployment validation: Patroni cluster status, replication lag, and pgBackRest stanza check

Learn this in Academy: Platform Services track