add Code

etcd/etcd-statefulset.yaml

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+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: etcd
+spec:
+  clusterIP: None
+  ports:
+    - port: 2379
+      name: client
+    - port: 2380
+      name: peer
+  selector:
+    app: etcd
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: etcd
+  labels:
+    app: etcd
+spec:
+  serviceName: etcd
+  selector:
+    matchLabels:
+      app: etcd
+  replicas: 3
+  template:
+    metadata:
+      name: etcd
+      labels:
+        app: etcd
+    spec:
+      containers:
+        - name: etcd
+          image: quay.io/coreos/etcd:latest
+          ports:
+            - containerPort: 2379
+              name: client
+            - containerPort: 2380
+              name: peer
+          volumeMounts:
+            - name: data
+              mountPath: /var/run/etcd
+          command:
+            - /bin/sh
+            - -c
+            - |
+              PEERS="etcd-0=http://etcd-0.etcd:2380,etcd-1=http://etcd-1.etcd:2380,etcd-2=http://etcd-2.etcd:2380"
+              exec etcd --name ${HOSTNAME} \
+                --listen-peer-urls http://0.0.0.0:2380 \
+                --listen-client-urls http://0.0.0.0:2379 \
+                --advertise-client-urls http://${HOSTNAME}.etcd:2379 \
+                --initial-advertise-peer-urls http://${HOSTNAME}.etcd:2380 \
+                --initial-cluster-token etcd-cluster-1 \
+                --initial-cluster ${PEERS} \
+                --initial-cluster-state new \
+                --data-dir /var/run/etcd/default.etcd
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+      spec:
+        accessModes: ["ReadWriteOnce"]
+        resources:
+          requests:
+            storage: 10Gi

etcd/kustomization.yaml

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+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+- etcd-statefulset.yaml