feat: HA and move PVC to redundant storage class

manifests/database.yaml

@@ -5,11 +5,11 @@ metadata:
   namespace: synapse
 
 spec:
-  instances: 1
+  instances: 3
 
   storage: 
     size: 5Gi
-    storageClass: flat-storage-class
+    storageClass: redundant-storage-class
 
   bootstrap:
     initdb:

manifests/deployment.yaml

@@ -4,7 +4,7 @@ metadata:
   name: synapse
   namespace: synapse
 spec:
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: synapse
@@ -13,6 +13,13 @@ spec:
       labels:
         app: synapse
     spec:
+      topologySpreadConstraints:
+        - maxSkrew: 1
+          topologyKey: kubernetes.io/hostname
+          whenUnsatisfiable: DoNotSchedule
+          labelSelector:
+            matchLabels:
+              app: synapse
       securityContext:
         fsGroup: 991
       containers:

manifests/pvc.yaml

@@ -5,8 +5,8 @@ metadata:
   namespace: synapse
 spec:
     accessModes:
-        - ReadWriteOnce
-    storageClassName: flat-storage-class
+        - ReadWriteMany
+    storageClassName: redundant-storage-class
     resources:
         requests:
             storage: 1Gi