磐基2.0搭建es集群 k8s安装elasticsearch集群-Toy模板网

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参考：

k8s安装elasticsearch集群

k8s安装elasticsearch集群_k8s部署elasticsearch集群_MasonYyp的博客-CSDN博客1 环境简述搭建es集群需要使用的技术如下：k8s集群、StatefulSet控制器、Service（NodePort）服务、PV、PVC、volumeClaimTemplates（存储卷申请模板）。StatefulSet控制器创建的Pod适合用于分布式存储系统，它最大的特点是各个Pod的数据不一样，各个Pod无法使用同一个存储卷。注意StatefulSet会给所有的Pod从0开始编号，编号的规则是${statuefulset名称}-${序号}。如果StatefulSet的Pod被误删除，State_k8s部署elasticsearch集群https://blog.csdn.net/make_progress/article/details/124638272

参考2

云原生 | K8S集群部署es集群+kibana

云原生 | K8S集群部署es集群+kibana_Theshy！的博客-CSDN博客K8S集群部署es集群+kibanahttps://blog.csdn.net/m0_70331483/article/details/130098234

参考3

vim es.yamlapiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
  name: elasticsearch-pdb
spec:
  selector:
    matchLabels:
      app: elasticsearch
  maxUnavailable: 1
---
apiVersion: apps/v1 
kind: StatefulSet
metadata:
  name: elasticsearch
spec:
  serviceName: elasticsearch-hs
  replicas: 3
  selector:
    matchLabels:
      app: elasticsearch
  updateStrategy:
    type: RollingUpdate
  podManagementPolicy: Parallel
  template:
    metadata:
      labels:
        app: elasticsearch 
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: "app"
                    operator: In
                    values:
                    - elasticsearch
              topologyKey: "kubernetes.io/hostname"
      containers:
      - name: elasticsearch
        image: harbor.kp.com/keepwork/elasticsearch:7.5.0        
        resources:
            limits:
              cpu: 1
              memory: 2Gi
            requests:
              cpu: 0.01
              memory: 2Gi
        ports:
        - containerPort: 9200 
          name: rest 
          protocol: TCP
        - containerPort: 9300 
          name: inter-node 
          protocol: TCP
        volumeMounts:
        - name: data
          mountPath: /usr/share/elasticsearch/data
        - name: plugins
          mountPath: /usr/share/elasticsearch/plugins
        env:
          - name: cluster.name 
            value: k8s-logs 
          - name: node.name
            valueFrom:
              fieldRef:
                fieldPath: metadata.name 
          - name: discovery.zen.ping.unicast.hosts
            value: "elasticsearch-0.elasticsearch-hs,elasticsearch-1.elasticsearch-hs,elasticsearch-2.elasticsearch-hs"
          - name: discovery.zen.minimum_master_nodes
            value: "2"
          - name: cluster.initial_master_nodes    #此参数es7以上才能设置
            value: elasticsearch-0,elasticsearch-1
          - name: ES_JAVA_OPTS
            value: "-Xms1536m -Xmx1536m"
          - name: TZ
            value: "Asia/Shanghai"
      initContainers:
      - name: fix-permissions-data
        image: registry.cn-hangzhou.aliyuncs.com/caosx-public/busybox:1.28.3
        command: ["sh", "-c", "chown -R 1000:1000 /usr/share/elasticsearch/data"]
        securityContext:
          privileged: true
        volumeMounts:
        - name: data
          mountPath: /usr/share/elasticsearch/data
      - name: fix-permissions-plugins
        image: registry.cn-hangzhou.aliyuncs.com/caosx-public/busybox:1.28.3
        command: ["sh", "-c", "rm -fr /usr/share/elasticsearch/plugins/lost+found && chown -R 1000:1000 /usr/share/elasticsearch/plugins"]
        securityContext:
          privileged: true
        volumeMounts:
        - name: plugins
          mountPath: /usr/share/elasticsearch/plugins
      - name: increase-vm-max-map
        image: registry.cn-hangzhou.aliyuncs.com/caosx-public/busybox:1.28.3
        command: ["sysctl", "-w", "vm.max_map_count=262144"]
        securityContext:
          privileged: true
      - name: increase-fd-ulimit
        image: registry.cn-hangzhou.aliyuncs.com/caosx-public/busybox:1.28.3
        command: ["sh", "-c", "ulimit -n 65536"]
        securityContext:
          privileged: true
  volumeClaimTemplates:
  - metadata:
      name: data
      labels:
        app: elasticsearch
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: local
      resources:
        requests:
          storage: 20Gi
  - metadata:
      name: plugins
      labels:
        app: elasticsearch
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: local
      resources:
        requests:
          storage: 200Mi
---
kind: Service
apiVersion: v1
metadata:
  name: elasticsearch-hs
  labels:
    app: elasticsearch
spec:
  selector:
    app: elasticsearch
  clusterIP: None
  ports:
    - port: 9300
      targetPort: 9300
---
kind: Service
apiVersion: v1
metadata:
  name: elasticsearch-cs
  labels:
    app: elasticsearch
spec:
  selector:
    app: elasticsearch
  ports:
    - port: 9200
      targetPort: 9200
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: elasticsearch-ingress
spec:
  rules:
  - host: elasticsearch.gdcattsoft2.com
    http:
      paths:
      - path: /
        backend:
          serviceName: elasticsearch-cs
          servicePort: 9200

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