ensure db pods live on seperate worker nodes (#620)

* ensure db pods live on seperate control-plane nodes * change to using instance name to help pod sprawl against operator
rackerlabs · Dec 11, 2024 · 5f10f6b · 5f10f6b
1 parent d26cdb6
commit 5f10f6b
Showing 1 changed file with 20 additions and 1 deletion.
diff --git a/base-kustomize/mariadb-cluster/base/mariadb-replication.yaml b/base-kustomize/mariadb-cluster/base/mariadb-replication.yaml
@@ -12,14 +12,33 @@ spec:
   database: mariadb
   image: mariadb:10.11.7
 
+  affinity:
+    nodeAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+        nodeSelectorTerms:
+          - matchExpressions:
+              - key: node-role.kubernetes.io/worker
+                operator: In
+                values:
+                  - worker
+    podAntiAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+        - labelSelector:
+          matchExpressions:
+            - key: app.kubernetes.io/instance
+              operator: In
+              values:
+                - mariadb-cluster
+          topologyKey: kubernetes.io/hostname
+
   storage:
     size: 10Gi
     storageClassName: general
     resizeInUseVolumes: true
     waitForVolumeResize: true
     volumeClaimTemplate:
       accessModes:
-      - ReadWriteOnce
+        - ReadWriteOnce
       resources:
         requests:
           storage: 10Gi