在k8s上部署es

sts

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: es-cluster
  namespace: es-ns
spec:
  serviceName: elasticsearch
  replicas: 3
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      containers:
      - name: elasticsearch
        image: suredandan/elasticsearch:7.16.1
        imagePullPolicy: IfNotPresent
        resources:
            limits:
              cpu: 1000m
            requests:
              cpu: 100m
        ports:
        - containerPort: 9200
          name: rest
          protocol: TCP
        - containerPort: 9300
          name: inter-node
          protocol: TCP
        volumeMounts:
        - name: data
          mountPath: /usr/share/elasticsearch/data
        env:
          - name: cluster.name
            value: k8s-logs
          - name: node.name
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: discovery.seed_hosts
            value: "es-cluster-0.elasticsearch,es-cluster-1.elasticsearch,es-cluster-2.elasticsearch"
          - name: cluster.initial_master_nodes
            value: "es-cluster-0,es-cluster-1,es-cluster-2"
          - name: ES_JAVA_OPTS
            value: "-Xms512m -Xmx512m"
      initContainers:
      - name: fix-permissions
        image: suredandan/busybox:1.32
        imagePullPolicy: IfNotPresent
        command: ["sh", "-c", "chown -R 1000:1000 /usr/share/elasticsearch/data"]
        securityContext:
          privileged: true
        volumeMounts:
        - name: data
          mountPath: /usr/share/elasticsearch/data
      - name: increase-vm-max-map
        image: suredandan/busybox:1.32
        imagePullPolicy: IfNotPresent
        command: ["sysctl", "-w", "vm.max_map_count=262144"]
        securityContext:
          privileged: true
      - name: increase-fd-ulimit
        image: suredandan/busybox:1.32
        imagePullPolicy: IfNotPresent
        command: ["sh", "-c", "ulimit -n 65536"]
        securityContext:
          privileged: true
  volumeClaimTemplates:
  - metadata:
      name: data
      labels:
        app: elasticsearch
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: standard
      resources:
        requests:
          storage: 10Gi

svc:

apiVersion: v1
kind: Service
metadata:
  name: elasticsearch
  namespace: es-ns
  labels:
    app: elasticsearch
spec:
  type: NodePort
  selector:
    app: elasticsearch
  clusterIP: None
  ports:
    - port: 9200
      name: rest
    - port: 9300
      name: inter-node

也可以直接以nodeport的方式暴露

部署后的结果如下：

root@DESKTOP-GCPD6RU:~# kubectl get sts
NAME         READY   AGE
es-cluster   1/1     17h
root@DESKTOP-GCPD6RU:~#
root@DESKTOP-GCPD6RU:~# kubectl get pod
NAME           READY   STATUS    RESTARTS   AGE
es-cluster-0   1/1     Running   0          17h
root@DESKTOP-GCPD6RU:~#
root@DESKTOP-GCPD6RU:~# kubectl get svc
NAME            TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)             AGE
elasticsearch   ClusterIP   None         <none>        9200/TCP,9300/TCP   17h
root@DESKTOP-GCPD6RU:~#