dn

dns/dns.yaml

@@ -30,9 +30,13 @@ metadata:
   namespace: dns
 spec:
   replicas: 1
-  selector: { matchLabels: { app: etcd } }
+  selector:
+    matchLabels:
+      app: etcd
   template:
-    metadata: { labels: { app: etcd } }
+    metadata:
+      labels:
+        app: etcd
     spec:
       containers:
       - name: etcd
@@ -44,16 +48,28 @@ spec:
           - --listen-client-urls=http://[::]:2379
           - --advertise-client-urls=http://etcd.dns.svc:2379
         ports:
-          - { name: client, containerPort: 2379, protocol: TCP }
+        - { name: client, containerPort: 2379, protocol: TCP }
+        # probes use loopback to avoid IPv6 node->pod path
+        startupProbe:
+          exec:
+            command: ["/bin/sh","-c","curl -s --max-time 1 http://[::1]:2379/health | grep -q true"]
+          failureThreshold: 30
+          periodSeconds: 2
         readinessProbe:
-          httpGet: { path: /health, port: 2379 }
-          initialDelaySeconds: 2
+          exec:
+            command: ["/bin/sh","-c","curl -s --max-time 1 http://[::1]:2379/health | grep -q true"]
           periodSeconds: 3
+        livenessProbe:
+          exec:
+            command: ["/bin/sh","-c","curl -s --max-time 1 http://[::1]:2379/health | grep -q true"]
+          periodSeconds: 10
         volumeMounts:
-          - { name: data, mountPath: /var/lib/etcd }
+        - { name: data, mountPath: /var/lib/etcd }
       volumes:
-        - name: data
-          persistentVolumeClaim: { claimName: etcd-data }
+      - name: data
+        persistentVolumeClaim:
+          claimName: etcd-data
+
 ---
 apiVersion: v1
 kind: ConfigMap