我有一个Spring Boot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映像并创建了Kubernetes部署，并在同一部署YAML文件中同时指定了应用程序和mongodb的映像。另外，我已经为该应用创建了服务YAML，并且运行正常。
deployment.yml
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
-service.yaml
kubectl port-forward svc/springbootmongodb 8080:8080
端口转发命令：
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
一切都适用于上述配置。
现在，我想为该应用创建单独的部署，并创建了两个部署和服务YAML，但是它不起作用。有人可以帮我吗？
app-deployment.yaml
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
mongo-deployment.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
appservice.yml
apiVersion: v1
kind: Service
metadata:
name: mongodb
labels:
app: mongo
spec:
type: ClusterIP
ports:
- port: 27017
targetPort: 27017
protocol: TCP
selector:
app: mongo
mongoservice.yml
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
我看到所有创建的对象：
kubectl获得豆荚 名称就绪状态重启年龄 mongodb-686dd5cb7f-dr9hq 1/1正在运行0 3m12s springbootmongodb-7ccbc488fb-vtgw5 1/1运行0 115秒
kubectl全部获得
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]
服务错误日志：
<!DOCTYPE html>
<html>
<head>
<title>Email Title</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph.</p>
</body>
</html>答案 0 :(得分：3)
您似乎需要更改Springboot应用程序的配置以使用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>
✌️</ p>
答案 1 :(得分：0)
就像 Rico 已经提到你在应用程序配置 'localhost' 中的地址错误
但还有其他问题:)
而不是部署，您应该使用 StateFulSet，因为它旨在具有状态和卷。 当您创建超过 1 个副本时会出现主要问题，所有部署都将具有相同的持久卷，因此可能会导致数据不一致和数据库崩溃。 StateFulSet 将为每个副本创建每个卷。 Ofc 那么你将有 2 个不同数据的数据库，所以它可能会导致另一个问题。
如果您正在构建企业应用程序，那么最好了解指定的数据库和 kubernetes 配置，该配置提供种类：MongoDB。
https://docs.mongodb.com/kubernetes-operator/master/reference/k8s-operator-specification/
另外值得一提的是，您没有使用环境变量将凭据/地址传递到您的数据库。很高兴知道这个东西存在并且应该在配置更改时使用它而不是重建应用程序。