Moved PSQL to NG

k8s-ng/postgresql/cluster.yaml

@@ -0,0 +1,48 @@
+# Main HA PostgreSQL cluster: one primary and one streaming replica, each on its
+# own node with a node-local volume. Replication is asynchronous (nodes sit in
+# different regions), so a failover can lose the last few transactions.
+#
+# Nodes eligible for instances carry the label workload/postgres=true. To move a
+# replica: label the new node, unlabel the old one, then recreate the instance
+# (kubectl cnpg destroy main <N>); the operator re-clones it from the primary.
+#
+# Endpoints inside the cluster: main-rw (primary), main-ro (replicas),
+# main-r (any instance) in the psql namespace.
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: main
+  namespace: psql
+spec:
+  description: Main HA PostgreSQL cluster
+  imageName: ghcr.io/cloudnative-pg/postgresql:17
+  instances: 2
+  enableSuperuserAccess: false
+
+  # Roll updates replica-first and hand over by switchover instead of restarting the primary.
+  primaryUpdateStrategy: unsupervised
+  primaryUpdateMethod: switchover
+
+  storage:
+    storageClass: local-path
+    size: 20Gi # local-path volumes cannot be expanded later
+
+  affinity:
+    enablePodAntiAffinity: true
+    podAntiAffinityType: required
+    topologyKey: kubernetes.io/hostname
+    nodeSelector:
+      workload/postgres: "true"
+
+  resources:
+    requests:
+      cpu: 500m
+      memory: 1Gi
+    limits:
+      memory: 2Gi
+
+  postgresql:
+    parameters:
+      max_connections: "200"
+      shared_buffers: 512MB
+      effective_cache_size: 1536MB