split db and app into two deployments

clusters/default/git-ops/semaphore/semaphore-configmap.yml

@@ -6,7 +6,7 @@ metadata:
   namespace: git-ops
 data:
   SEMAPHORE_DB_USER: "semaphore"
-  SEMAPHORE_DB_HOST: "localhost"
+  SEMAPHORE_DB_HOST: "semaphore-db-service"
   SEMAPHORE_DB_PORT: "3306"
   SEMAPHORE_DB_DIALECT: "mysql"
   SEMAPHORE_DB: "semaphore"

clusters/default/git-ops/semaphore/semaphore-db.yml

@@ -0,0 +1,43 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: semaphore-db
+  namespace: git-ops
+spec:
+  strategy:
+    type: Recreate
+  replicas: 1
+  selector:
+    matchLabels:
+      app: semaphore-db
+  template:
+    metadata:
+      labels:
+        app: semaphore-db
+    spec:
+      containers:
+      - name: mysql
+        image: mysql:9.5.0
+        ports:
+        - containerPort: 3306
+        env:
+        - name: MYSQL_RANDOM_ROOT_PASSWORD
+          value: "'yes'"
+        - name: MYSQL_DATABASE
+          value: "semaphore"
+        - name: MYSQL_USER
+          value: "semaphore"
+        - name: MYSQL_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: semaphore-secrets
+              key: mysql_password
+        volumeMounts:
+        - name: db
+          mountPath: /var/lib/mysql
+          subPath: db
+      volumes:
+      - name: db
+        persistentVolumeClaim:
+          claimName: semaphore-longhorn

clusters/default/git-ops/semaphore/semaphore-svc.yml

@@ -14,3 +14,16 @@ spec:
   ports:
   - port: 3002
     targetPort: 3000
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: semaphore-db-service
+  namespace: git-ops
+spec:
+  selector:
+    app: semaphore-db
+  ports:
+  - port: 3306
+    targetPort: 3306

clusters/default/git-ops/semaphore/semaphore.yml

@@ -17,27 +17,9 @@ spec:
         app: semaphore
     spec:
       initContainers:
-      - name: mysql
+      - name: wait-for-db
-        image: mysql:9.5.0
+        image: busybox
-        restartPolicy: Always
+        command: ['sh', '-c', 'until nc -z -v -w30 semaphore-db-service 3306; do echo "Waiting for database connection..."; sleep 5; done;']
-        ports:
-        - containerPort: 3306
-        env:
-        - name: MYSQL_RANDOM_ROOT_PASSWORD
-          value: "'yes'"
-        - name: MYSQL_DATABASE
-          value: "semaphore"
-        - name: MYSQL_USER
-          value: "semaphore"
-        - name: MYSQL_PASSWORD
-          valueFrom:
-            secretKeyRef:
-              name: semaphore-secrets
-              key: mysql_password
-        volumeMounts:
-        - name: db
-          mountPath: /var/lib/mysql
-          subPath: db
       containers:
       - name: semaphore
         image: public.ecr.aws/semaphore/pro/server:v2.16.45
@@ -62,7 +44,3 @@ spec:
             secretKeyRef:
               name: semaphore-secrets
               key: key
-      volumes:
-      - name: db
-        persistentVolumeClaim:
-          claimName: semaphore-longhorn