Clickhouse集群化（二）单节点部署

1. k8s单节点部署

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: clickhouse
  labels:
    app: clickhouse
spec:
  replicas: 1
  serviceName: clickhouse
  selector:
    matchLabels:
      app: clickhouse
  template:
    metadata:
      labels:
        app: clickhouse
    spec:
      containers:
        - name: clickhouse
          image: clickhouse-server:24.1.2.5
          imagePullPolicy: IfNotPresent
          env:
          ports:
            - containerPort: 8123
              protocol: TCP
          livenessProbe:
            httpGet:
              scheme: HTTP
              path: /ping
              port: 8123
            initialDelaySeconds: 600
            periodSeconds: 10
            timeoutSeconds: 10
            successThreshold: 1
            failureThreshold: 6
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
              - matchExpressions:
                  - key: kubernetes.io/hostname
                    operator: In
                    values:
                      - "node1"
                      - "node2"
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                      - clickhouse
              topologyKey: "kubernetes.io/hostname"
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: clickhouse
  name: clickhouse
spec:
  ipFamilies:
    - IPv4
    - IPv6
  ipFamilyPolicy: PreferDualStack
  type: NodePort 
  ports:
    - port: 8123 
      protocol: TCP
      targetPort: 8123
      nodePort: 31120
  selector:
    app: clickhouse-v1

 clickhouse默认使用无密码的default用户 也可以根据环境变量进行修改

apiVersion: v1
kind: Secret
metadata:
  name: clickhouse-secrets
  namespace: gzzx
type: Opaque
data:
  user: xxx # Base64 编码的用户
  password: xx # Base64 编码的密码

          env:        
            - name: CLICKHOUSE_USER
              valueFrom:
                secretKeyRef:
                  name: clickhouse-secrets
                  key: user
            - name: CLICKHOUSE_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: clickhouse-secrets
                  key: password