2022-12-25：etcd可以完全替代zookeeper，原因是k8s用的etcd，不用担心不成熟。请问etcd部署在k3s中，yaml如何写？

答案2022-12-25：

用户名：root
密码：moonfdd

yaml如下：

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: etcd
  name: etcd
  namespace: moonfdd
spec:
  replicas: 1
  selector:
    matchLabels:
      app: etcd
  template:
    metadata:
      labels:
        app: etcd
    spec:
      containers:
        - env:
            - name: "ETCD_ROOT_PASSWORD"
              value: "moonfdd"
            - name: "ETCD_ADVERTISE_CLIENT_URLS"
              value: "http://0.0.0.0:2379"
            - name: "ETCD_LISTEN_PEER_URLS"
              value: "http://0.0.0.0:2380"
            - name: "ETCD_INITIAL_ADVERTISE_PEER_URLS"
              value: "http://0.0.0.0:2380"
            - name: "ETCD_INITIAL_CLUSTER"
              value: "moonfdd=http://0.0.0.0:2380"
            - name: "ETCD_NAME"
              value: "moonfdd"
            - name: "ETCD_DATA_DIR"
              value: "/opt/bitnami/etcd/data"
          image: bitnami/etcd
          securityContext:
            privileged: true
          imagePullPolicy: IfNotPresent
          name: etcd
          volumeMounts:
            - mountPath: /opt/bitnami/etcd/data
              name: volv2
      volumes:
        - hostPath:
            path: /root/k8s/moonfdd/etcd/opt/bitnami/etcd/data
            type: DirectoryOrCreate
          name: volv2
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: etcd
  name: etcd
  namespace: moonfdd
spec:
  ports:
    - port: 2379
      protocol: TCP
      targetPort: 2379
      name: 2379-2379
    - port: 2380
      protocol: TCP
      targetPort: 2380
      name: 2380-2380
  selector:
    app: etcd
  type: NodePort