kubernetes安装elasticsearch

Step1: 准备yaml

创建 es-sts.yaml ：

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: es-cluster
  namespace: elk
spec:
  serviceName: es-cluster
  replicas: 3
  selector:
    matchLabels:
      app: es-cluster
  template:
    metadata:
      name: es-cluster
      labels:
        app: es-cluster
    spec:
      initContainers:
        - name: init-sysctl
          image: busybox
          command:
            - sysctl
            - '-w'
            - vm.max_map_count=262144
          imagePullPolicy: IfNotPresent
          securityContext:
            privileged: true
      containers:
        - image: 'docker.elastic.co/elasticsearch/elasticsearch:7.17.5'
          name: es
          env:
            - name: node.name
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: cluster.name
              value: my-cluster
            - name: cluster.initial_master_nodes
              value: 'es-cluster-0,es-cluster-1,es-cluster-2'
            - name: discovery.seed_hosts
              value: es-cluster
            - name: network.host
              value: _site_
            - name: ES_JAVA_OPTS
              value: '-Xms512m -Xmx512m'
          volumeMounts:
            - name: es-cluster-data
              mountPath: /usr/share/elasticsearch/data
      volumes:
        - name: es-cluster-data
          emptyDir: {}

创建负载服务 svc.yaml ：

apiVersion: v1
kind: Service
metadata:
  name: es-cluster
  namespace: elk
spec:
  clusterIP: None
  ports:
    - name: http
      port: 9200
    - name: tcp
      port: 9300
  selector:
    app: es-cluster

创建外网访问 nodePort.yaml

apiVersion: v1
kind: Service
metadata:
  name: es-cluster-nodeport
  namespace: elk
spec:
  type: NodePort
  selector:
    app: es-cluster
  ports:
    - name: http
      port: 9200
      targetPort: 9200
      nodePort: 31200
    - name: tcp
      port: 9300
      targetPort: 9300
      nodePort: 31300

Step2: 创建

创建以上的yaml文件：

kubectl apply -f es-sts.yaml
kubectl apply -f svc.yaml

或者使用kubebiz的yaml源：

kubectl apply -f https://www.kubebiz.com/raw/KubeBiz/Elasticsearch/7.17.5/all?namespace=elk

Step3: 验证

查看状态：

kubectl get pods -n elk
NAME                  READY   STATUS    RESTARTS   AGE
es-cluster-0          1/1     Running   0          3m
es-cluster-1          1/1     Running   0          3m
es-cluster-2          1/1     Running   0          3m

等待所有pod的状态为Running。

通过创建的nodePort访问，通过 <nodepot-ip>:31200在游览器访问，返回：

{
  "name" : "es-cluster-2",
  "cluster_name" : "my-cluster",
  "cluster_uuid" : "_na_",
  "version" : {
    "number" : "7.17.5",
    "build_flavor" : "default",
    "build_type" : "docker",
    "build_hash" : "8d61b4f7ddf931f219e3745f295ed2bbc50c8e84",
    "build_date" : "2022-06-23T21:57:28.736740635Z",
    "build_snapshot" : false,
    "lucene_version" : "8.11.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

安装完成。

相关链接

https://www.kubebiz.com/KubeBiz/Elasticsearch