使用Spring Boot Operator将Spring Boot部署到Kubernetes

mvn com.google.cloud.tools:jib-maven-plugin:build \
-Djib.to.auth.username=${{ secrets.MY_USERNAME }} \
-Djib.to.auth.password=${{ secrets.MY_PASSWORD }} \
-Djib.container.jvmFlags=--add-opens,java.base/sun.nio.ch=ALL-UNNAMED \
-Djib.from.image=freemanliu/oprenjre:11.0.5 \
-Dimage=registry.cn-shanghai.aliyuncs.com/qingmuio/operator-demo/operator-demo:v1.0.0

kubectl apply -f https://raw.githubusercontent.com/goudai/spring-boot-operator/master/manifests/deployment.yaml

namespace/spring-boot-operator-system created
customresourcedefinition.apiextensions.k8s.io/springbootapplications.springboot.qingmu.io created
role.rbac.authorization.k8s.io/spring-boot-operator-leader-election-role created
clusterrole.rbac.authorization.k8s.io/spring-boot-operator-manager-role created
clusterrole.rbac.authorization.k8s.io/spring-boot-operator-proxy-role created
clusterrole.rbac.authorization.k8s.io/spring-boot-operator-metrics-reader created
rolebinding.rbac.authorization.k8s.io/spring-boot-operator-leader-election-rolebinding created
clusterrolebinding.rbac.authorization.k8s.io/spring-boot-operator-manager-rolebinding created
clusterrolebinding.rbac.authorization.k8s.io/spring-boot-operator-proxy-rolebinding created
service/spring-boot-operator-controller-manager-metrics-service created
deployment.apps/spring-boot-operator-controller-manager created

kubectl  get po -n spring-boot-operator-system

NAME                                                       READY   STATUS    RESTARTS   AGE
spring-boot-operator-controller-manager-7f498596bb-wcwtn   2/2     Running   0          2m15s

# Demo.yaml
apiVersion: springboot.qingmu.io/v1alpha1
kind: SpringBootApplication
metadata:
  name: operator-demo
spec:
  springBoot:
    version: v1.0.0
#    image: registry.cn-shanghai.aliyuncs.com/qingmuio/operator-demo/operator-demo:v1.0.0

kubectl apply -f Demo.yaml

springbootapplication.springboot.qingmu.io/operator-demo created

~# kubectl  get po | grep operator-demo
operator-demo-7574f4789c-mg58m             1/1     Running   0          76s
operator-demo-7574f4789c-ssr8v             1/1     Running   0          76s
operator-demo-7574f4789c-sznww             1/1     Running   0          76s

kubectl exec -it operator-demo-7574f4789c-mg58m bash
bash-5.0# ps -ef
UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 02:06 ?        00:00:00 /pause
root         6     0 26 02:06 ?        00:00:09 java --add-opens java.base/sun.nio.ch=ALL-UNNAMED -cp /app/resources:/app/classes:/app/libs/* io.qingmu.operator.operatordemo.Oper...
root        38     0  0 02:07 pts/0    00:00:00 bash
root        44    38  0 02:07 pts/0    00:00:00 ps -ef

~# kubectl  get svc | grep operator-demo
operator-demo             ClusterIP   10.101.128.6             8080/TCP            2m52s

root@server1:~# curl -i http://10.101.128.6:8080
HTTP/1.1 200 
Content-Type: text/plain;charset=UTF-8
Content-Length: 9
Date: Wed, 08 Apr 2020 08:45:46 GMT

hello !!!

# Demo.yaml
apiVersion: springboot.qingmu.io/v1alpha1
kind: SpringBootApplication
metadata:
  name: operator-demo
spec:
  springBoot:
    version: v1.0.0
    replicas: 1

root@server1:~# kubectl apply -f Demo.yaml
springbootapplication.springboot.qingmu.io/operator-demo configured

~# kubectl  get po | grep operator-demo
operator-demo-7574f4789c-sznww             1/1     Running   0          8m29s

~# kubectl delete -f Demo.yaml
springbootapplication.springboot.qingmu.io "operator-demo" deleted

kubectl  get po | grep operator-demo

kubectl create  \
secret docker-registry aliyun-registry-secret \
--docker-server=registry-vpc.cn-hangzhou.aliyuncs.com \
--docker-username=*** \
--docker-password=*** \
--docker-email=***

apiVersion: springboot.qingmu.io/v1alpha1
kind: SpringBootApplication
metadata:
  name: 你的应用的名称
spec:
  springBoot:
    version: v1.0.0
    replicas: 1 
    image: 你的image地址
    imagePullSecrets: 
      - 上面创建的secret

apiVersion: springboot.qingmu.io/v1alpha1
kind: SpringBootApplication
metadata:
  name: operator-demo
  namespace: default
spec:
  springBoot:
    # image 可以不设置，如果不设置默认使用 IMAGE_REPOSITORY+/+mate.name+:+spec.springBoot.version
    # registry.cn-shanghai.aliyuncs.com/qingmuio + / + operator-demo + : + v1.0.0
    image: registry.cn-shanghai.aliyuncs.com/qingmuio/operator-demo:v1.0.0
    clusterIp: "" 
    version: v1.0.0 
    replicas: 1 
    resource:
      cpu:
        request: 50m
        limit: "" 
      memory:
        request: 1Gi
        limit: 1Gi 
    path:
      liveness: /actuator/health
      readiness: /actuator/health
      hostLog: /var/applog
      shutdown: /spring/shutdown
    imagePullSecrets: 
      - aliyun-docker-registry-secret
    env: 
      - name: EUREKA_SERVERS
        value: http://eureka1:8761/eureka/,http://eureka2:8761/eureka/,http://eureka3:8761/eureka/
    nodeAffinity: 
      key: "failure-domain.beta.kubernetes.io/zone"
      operator: "In"
      values:
        - "cn-i"
        - "cn-h"
        - "cn-g"

management:
  endpoints:
    web:
      exposure:
        include: "*"
  endpoint:
    shutdown:
      enabled: true

@RestController
public class ShutdownController {
    @Autowired
    private ShutdownEndpoint shutdownEndpoint;

    @GetMapping("/spring/shutdown")
    public Map<String, String> shutdown(HttpServletRequest request) {
        return shutdownEndpoint.shutdown();
    }
}

cn-i区(node-i1,node-i02)
cn-h区(node-g1,node-g02)
cn-g区(node-h1,node-h02)

kubectl label node node-i1 failure-domain.beta.kubernetes.io/zone=cn-i
kubectl label node node-i2 failure-domain.beta.kubernetes.io/zone=cn-i

kubectl label node node-h1 failure-domain.beta.kubernetes.io/zone=cn-i
kubectl label node node-ih2 failure-domain.beta.kubernetes.io/zone=cn-i

spec:
  springBoot:
    nodeAffinity: #可以不设置 节点亲和 这里演示的是尽量将pod分散到 i h g 三个可用区，默认设置了pod反亲和
      key: "failure-domain.beta.kubernetes.io/zone"
      operator: "In"
      values:
        - "cn-i"
        - "cn-h"
        - "cn-g"

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    control-plane: controller-manager
  name: spring-boot-operator-controller-manager
  namespace: spring-boot-operator-system
.....

        #注意：一下配置针对通用全局的Spring Boot默认配置，对crd的Spring Boot生效，这里不配置也可以在部署的yaml中指定

        # 私有仓库的地址，比如我的最终打包的镜像地址是 registry.cn-shanghai.aliyuncs.com/qingmuio/operator-demo/operator-demo:v1.0.0
        # 那么配置的值是 registry.cn-shanghai.aliyuncs.com/qingmuio/operator-demo
        # 配置这个值之后，我们我们如果在发布的yaml中不写image，那么使用的image就是 IMAGE_REPOSITORY+"/"+mate.name+spec.springBoot.version
        - name: IMAGE_REPOSITORY
          value: registry.cn-shanghai.aliyuncs.com/qingmuio
        # 请求CPU限制
        - name: REQUEST_CPU
          value: 50m
        # 限制最大能用最大CPU Java应用可以不用限制，限制不合理会导致启动异常缓慢
        - name: LIMIT_CPU
          value: ""
        # 请求内存大小
        - name: REQUEST_MEMORY
          value: 500Mi
        # 限制最大内存大小 一般和request一样大即可
        - name: LIMIT_MEMORY
          value: 500Mi
        # 就绪检查Path，Spring Boot Actuator 默认Path
        - name: READINESS_PATH
          value: /actuator/health
        # 就绪存活Path，Spring Boot Actuator 默认Path
        - name: LIVENESS_PATH
          value: /actuator/health
        # 就绪存活Path，优雅停机Path
        - name: SHUTDOWN_PATH
          value: /spring/shutdown
        # 复制级 即副本数
        - name: REPLICAS
          value: "3"
        # 将日志外挂到主机磁盘Path，默认两者相同
        - name: HOST_LOG_PATH
          value: /var/applog
        # 用于pull镜像的secrets
        - name: IMAGE_PULL_SECRETS
          value: ""
        # 用于pull镜像的secrets
        - name: SPRING_BOOT_DEFAULT_PORT
          value: "8080"
        # Node亲和，比如我可以设置Pod尽量分散在不同可用区cn-i，cn-g，cn-h区
        - name: NODE_AFFINITY_KEY
          value: ""
        - name: NODE_AFFINITY_OPERATOR
          value: ""
        - name: NODE_AFFINITY_VALUES
          value: ""
        # 全局的环境变量，会追加到每个Spring Boot的每个Pod中，格式 k=v；k1=v2,
        # 如 EUREKA_SERVERS=http://eureka1:8761/eureka/,http://eureka2:8761/eureka/,http://eureka3:8761/eureka/;k=v
        - name: SPRING_BOOT_ENV
          value: ""
        image: registry.cn-shanghai.aliyuncs.com/qingmuio/spring-boot-operator-controller:latest

.....

apiVersion: springboot.qingmu.io/v1alpha1
kind: SpringBootApplication
metadata:
  name: 你的应用的名称
spec:
  springBoot:
    version: v1.0.0

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