K8S 服务健康检测方式

Liveness 和 Readiness 的三种使用方式

     readinessProbe:  # 定义只有http检测容器6379端口请求返回是 200-400，则接收下面的Service web-svc 的请求
            httpGet:
              scheme: HTTP
              path: /check
              port: 6379
            initialDelaySeconds: 10   # 容器启动 10 秒之后开始探测，注意观察下g1的启动成功时间
            periodSeconds: 5          # 每隔 5 秒再探测一次
            timeoutSeconds: 5         # http检测请求的超时时间
            successThreshold: 1       # 检测到有1次成功则认为服务是`就绪`
            failureThreshold: 3       # 检测到有3次失败则认为服务是`未就绪`
          livenessProbe:  # 定义只有http检测容器6222端口请求返回是 200-400，否则就重启pod
            httpGet:
              scheme: HTTP
              path: /check
              port: 6379
            initialDelaySeconds: 10
            periodSeconds: 5
            timeoutSeconds: 5
            successThreshold: 1
            failureThreshold: 3

#-----------------------------------------
            
          readinessProbe:
            exec:
              command:
              - sh
              - -c
              - "redis-cli ping"
            initialDelaySeconds: 5
            periodSeconds: 10
            timeoutSeconds: 1
            successThreshold: 1
            failureThreshold: 3
          livenessProbe:
            exec:
              command:
              - sh
              - -c
              - "redis-cli ping"
            initialDelaySeconds: 30
            periodSeconds: 10
            timeoutSeconds: 5
            successThreshold: 1
            failureThreshold: 3

#-----------------------------------------

        readinessProbe:
          tcpSocket:
            port: 9092
          initialDelaySeconds: 15
          periodSeconds: 10
        livenessProbe:
          tcpSocket:
            port: 9092
          initialDelaySeconds: 15
          periodSeconds: 10