我正在尝试使用Helm Chart在kubernetes集群上部署spring boot微服务。但是我注意到一个奇怪的问题,我的spring boot应用程序启动了,但是它在后立即关闭了
这是日志
Started JhooqK8sApplication in 3.431 seconds (JVM running for 4.149)
2020-06-25 20:57:24.460 INFO 1 --- [extShutdownHook] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
2020-06-25 20:57:24.469 INFO 1 --- [extShutdownHook] o.e.jetty.server.AbstractConnector : Stopped ServerConnector@548a102f{HTTP/1.1, (http/1.1)}{0.0.0.0:8080}
2020-06-25 20:57:24.470 INFO 1 --- [extShutdownHook] org.eclipse.jetty.server.session : node0 Stopped scavenging
2020-06-25 20:57:24.474 INFO 1 --- [extShutdownHook] o.e.j.s.h.ContextHandler.application : Destroying Spring FrameworkServlet 'dispatcherServlet'
2020-06-25 20:57:24.493 INFO 1 --- [extShutdownHook] o.e.jetty.server.handler.ContextHandler : Stopped o.s.b.w.e.j.JettyEmbeddedWebAppContext@56528192{application,/,[file:///tmp/jetty-docbase.4637295322181051129.8080/],UNAVAILABLE}
Spring Boot版本: 2.2.7.RELEASE 春季启动的Docker Hub公共映像: rahulwagh17 / kubernetes:jhooq-k8s-springboot-jetty
当我手动使用kubectl命令创建部署和服务spring boot部署时,我注意到了一件奇怪的事情。
vagrant@kmaster:~$ kubectl create deployment demo --image=rahulwagh17/kubernetes:jhooq-k8s-springboot-jetty
vagrant@kmaster:~$ kubectl expose deployment demo --type=LoadBalancer --name=demo-service --external-ip=1.1.1.1 --port=8080
((我遵循本指南在kubernete上部署Spring Boot-Deploy spring boot on kubernetes cluster)
我只是想知道弹簧靴或头盔设置是否有问题?
这是我的头盔模板-
---
# Source: springboot/templates/serviceaccount.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: RELEASE-NAME-springboot
labels:
helm.sh/chart: springboot-0.1.0
app.kubernetes.io/name: springboot
app.kubernetes.io/instance: RELEASE-NAME
app.kubernetes.io/version: "1.16.0"
app.kubernetes.io/managed-by: Helm
---
# Source: springboot/templates/service.yaml
apiVersion: v1
kind: Service
metadata:
name: RELEASE-NAME-springboot
labels:
helm.sh/chart: springboot-0.1.0
app.kubernetes.io/name: springboot
app.kubernetes.io/instance: RELEASE-NAME
app.kubernetes.io/version: "1.16.0"
app.kubernetes.io/managed-by: Helm
spec:
type: ClusterIP
ports:
- port: 80
targetPort: http
protocol: TCP
name: http
selector:
app.kubernetes.io/name: springboot
app.kubernetes.io/instance: RELEASE-NAME
---
# Source: springboot/templates/deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: RELEASE-NAME-springboot
labels:
helm.sh/chart: springboot-0.1.0
app.kubernetes.io/name: springboot
app.kubernetes.io/instance: RELEASE-NAME
app.kubernetes.io/version: "1.16.0"
app.kubernetes.io/managed-by: Helm
spec:
replicas: 1
selector:
matchLabels:
app.kubernetes.io/name: springboot
app.kubernetes.io/instance: RELEASE-NAME
template:
metadata:
labels:
app.kubernetes.io/name: springboot
app.kubernetes.io/instance: RELEASE-NAME
spec:
serviceAccountName: RELEASE-NAME-springboot
securityContext:
{}
containers:
- name: springboot
securityContext:
{}
image: "rahulwagh17/kubernetes:jhooq-k8s-springboot-jetty"
imagePullPolicy: IfNotPresent
ports:
- name: http
containerPort: 80
protocol: TCP
livenessProbe:
httpGet:
path: /
port: http
readinessProbe:
httpGet:
path: /
port: http
resources:
{}
---
# Source: springboot/templates/tests/test-connection.yaml
apiVersion: v1
kind: Pod
metadata:
name: "RELEASE-NAME-springboot-test-connection"
labels:
helm.sh/chart: springboot-0.1.0
app.kubernetes.io/name: springboot
app.kubernetes.io/instance: RELEASE-NAME
app.kubernetes.io/version: "1.16.0"
app.kubernetes.io/managed-by: Helm
annotations:
"helm.sh/hook": test-success
spec:
containers:
- name: wget
image: busybox
command: ['wget']
args: ['RELEASE-NAME-springboot:80']
restartPolicy: Never
答案 0 :(得分:2)
2020-06-25 20:57:24.469信息1 --- [extShutdownHook] oejetty.server.AbstractConnector:已停止ServerConnector@548a102f{HTTP/1.1,(http / 1.1)} {0.0.0.0:8080}
ports:
- name: http
containerPort: 80
由于容器似乎在:8080上监听,所以活动探针(配置为与名为http
的端口联系)正在杀死您的Pod,但是您已经告诉kubernetes它正在监听:80
由于kubectl
创建的部署不会具有任何这种特异性,因此kubernetes不会使用活动探针,而您就可以了
如果要测试该理论,通常可以通过环境变量配置spring应用程序:
containers:
- name: springboot
env:
- name: SERVER_PORT
value: '80'
# and its friend, which is the one that
# you should be using for liveness and readiness
- name: MANAGEMENT_SERVER_PORT
value: '8080'
securityContext:
{}
image: "rahulwagh17/kubernetes:jhooq-k8s-springboot-jetty"
imagePullPolicy: IfNotPresent
ports:
- name: http
containerPort: 80
protocol: TCP