## Why
Both `arrstack-postgres` replicas were OOMKilled at the 1Gi memory limit on 2026-08-23 07:19, causing a failover to timeline 14, leaving replica-3 unrecoverable via pg_rewind, and blocking the argocd sync wave on Cluster Ready=False.
## Changes
- Raises the CNPG Cluster resources to requests 1Gi memory / 250m CPU and limits 2Gi memory / 1 CPU
**NOTE:** applying this restarts the postgres instances (CNPG rolling restart).
Reviewed-on: #408
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
unkin-agent
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