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我有一个 Spring 启动服务,我想连接到Kubernetes中的mongodb。到目前为止,我已经构建了应用程序的docker镜像并创建了Kubernetes部署,并在同一部署YAML文件中同时指定了应用程序和mongodb的镜像。另外,我已经为该应用创建了服务YAML,并且工作正常。
Deployment.yml
apiVersion: apps/v1
kind: Deployment
metadata:
name: springbootmongodb
labels:
app: springbootmongodb
spec:
replicas: 1
selector:
matchLabels:
app: springbootmongodb
template:
metadata:
labels:
app: springbootmongodb
spec:
containers:
- name: springbootmongodb
image: mytest/springbootmongodb
- name: mongo
image: mongo
--service.yaml
apiVersion: v1
kind: Service
metadata:
name: springbootmongodb
labels:
app: springbootmongodb
spec:
type: ClusterIP
ports:
- name: 8080-8080
port: 8080
targetPort: 8080
protocol: TCP
selector:
app: springbootmongodb
端口转发命令:
kubectl port-forward svc/springbootmongodb 8080:8080
一切都适用于上述配置。
apiVersion: apps/v1
kind: Deployment
metadata:
name: springbootmongodb
labels:
app: springbootmongodb
spec:
replicas: 1
selector:
matchLabels:
app: springbootmongodb
template:
metadata:
labels:
app: springbootmongodb
spec:
containers:
- name: springbootmongodb
image: mytest/springbootmongodb
mongo-deployment.yml
apiVersion: apps/v1
kind: Deployment
metadata:
name: mongodb
labels:
spec:
replicas: 1
selector:
matchLabels:
app: mongo
template:
metadata:
labels:
app: mongo
spec:
containers:
- name: mongo
image: mongo
ports:
- containerPort: 27017
appservice.yml
apiVersion: v1
kind: Service
metadata:
name: springbootmongodb
labels:
app: springbootmongodb
spec:
type: NodePort
ports:
- name: 8080-8080
port: 8080
targetPort: 8080
protocol: TCP
selector:
app: springbootmongodb
mongoservice.yml
apiVersion: v1
kind: Service
metadata:
name: mongodb
labels:
app: mongo
spec:
type: ClusterIP
ports:
- port: 27017
targetPort: 27017
protocol: TCP
selector:
app: mongo
我看到所有创建的对象:
NAME READY STATUS RESTARTS AGE
pod/mongodb-686dd5cb7f-dr9hq 1/1 Running 0 3m16s
pod/springbootmongodb-7ccbc488fb-vtgw5 1/1 Running 0 119s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 59d
service/mongodb ClusterIP 10.111.83.192 <none> 27017/TCP 2m35s
service/springbootmongodb NodePort 10.103.18.137 <none> 8080:31015/TCP 8s
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/mongodb 1/1 1 1 3m16s
deployment.apps/springbootmongodb 1/1 1 1 119s
NAME DESIRED CURRENT READY AGE
replicaset.apps/mongodb-686dd5cb7f 1 1 1 3m16s
replicaset.apps/springbootmongodb-7ccbc488fb 1 1 1 119s
服务错误日志:
2020-08-06 23:19:01.526 INFO 1 --- [nio-8080-exec-8] org.mongodb.driver.cluster : Cluster description not yet available. Waiting for 30000 ms before timing out
2020-08-06 23:19:07.048 ERROR 1 --- [nio-8080-exec-7] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.DataAccessResourceFailureException: Timed out after 30000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{address=localhost:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.ConnectException: Connection refused (Connection refused)}}]; nested exception is com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{address=localhost:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.ConnectException: Connection refused (Connection refused)}}]] with root cause
com.mongodb.MongoTimeoutException: Timed out after 30000 ms while waiting to connect. Client view of cluster state is {type=UNKNOWN, servers=[{address=localhost:27017, type=UNKNOWN, state=CONNECTING, exception={com.mongodb.MongoSocketOpenException: Exception opening socket}, caused by {java.net.ConnectException: Connection refused (Connection refused)}}]
at com.mongodb.internal.connection.BaseCluster.getDescription(BaseCluster.java:179) ~[mongodb-driver-core-3.8.2.jar!/:na]
at com.mongodb.internal.connection.SingleServerCluster.getDescription(SingleServerCluster.java:41) ~[mongodb-driver-core-3.8.2.jar!/:na]
at com.mongodb.client.internal.MongoClientDelegate.getConnectedClusterDescription(MongoClientDelegate.java:136) ~[mongodb-driver-3.8.2.jar!/:na]
at com.mongodb.client.internal.MongoClientDelegate.createClientSession(MongoClientDelegate.java:94) ~[mongodb-driver-3.8.2.jar!/:na]
at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.getClientSession(MongoClientDelegate.java:249) ~[mongodb-driver-3.8.2.jar!/:na]
at com.mongodb.client.internal.MongoClientDelegate$DelegateOperationExecutor.execute(MongoClientDelegate.java:172) ~[mongodb-driver-3.8.2.jar!/:na]
at com.mongodb.client.internal.MongoIterableImpl.execute(MongoIterableImpl.java:132) ~[mongodb-driver-3.8.2.jar!/:na]
at com.mongodb.client.internal.MongoIterableImpl.iterator(MongoIterableImpl.java:86) ~[mongodb-driver-3.8.2.jar!/:na]
at org.springframework.data.mongodb.core.MongoTemplate.executeFindMultiInternal(MongoTemplate.java:2643) ~[spring-data-mongodb-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:2380) ~[spring-data-mongodb-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.mongodb.core.MongoTemplate.doFind(MongoTemplate.java:2363) ~[spring-data-mongodb-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.mongodb.core.MongoTemplate.find(MongoTemplate.java:820) ~[spring-data-mongodb-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:360) ~[spring-data-mongodb-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:194) ~[spring-data-mongodb-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.mongodb.repository.support.SimpleMongoRepository.findAll(SimpleMongoRepository.java:51) ~[spring-data-mongodb-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_212]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_212]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_212]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_212]
at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:359) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:644) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:608) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.2.RELEASE.jar!/:5.1.2.RELEASE]
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61) ~[spring-data-commons-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
最佳答案
看来您需要更改Springboot应用程序的配置才能使用mongodb端点:mongodb:27017
而不是localhost:27017
❓🤔。由于mongo不再在同一容器/ pod上运行。
In the application.properties
file something like this:
spring.data.mongodb.uri=mongodb://mongodb:27017/<dbname>
✌️
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