【发布时间】：2021-08-04 19:44:45
【问题描述】：
部署 spring 应用程序仅适用于默认命名空间。将相同的应用程序部署到其他命名空间失败并出现以下错误：
我注意到这与默认命名空间中的服务（名为：Kubernetes）有关，该命名空间的 clusterIP 为10.242.0.1。将应用程序部署到其他命名空间仍会路由到默认命名空间中的此 Kubernetes 服务。向该服务添加服务链接没有帮助。使用其他命名空间中的端点创建此服务的副本也不能解决问题。
2021-05-13 11:46:24.514 WARN [some-service,,] 1 --- [ main] s.c.k.f.c.Fabric8ConfigMapPropertySource : Can't read configMap with name: [my-configmap] in namespace:[my-namespace]. Ignoring.
io.fabric8.kubernetes.client.KubernetesClientException: Operation: [get] for kind: [ConfigMap] with name: [my-configmap] in namespace: [my-namespace] failed.
at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:72) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:225) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:186) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:84) ~[kubernetes-client-4.13.2.jar:na]
at org.springframework.cloud.kubernetes.fabric8.config.Fabric8ConfigMapPropertySource.getData(Fabric8ConfigMapPropertySource.java:62) [spring-cloud-kubernetes-fabric8-config-2.0.2.jar:2.0.2]
at org.springframework.cloud.kubernetes.fabric8.config.Fabric8ConfigMapPropertySource.<init>(Fabric8ConfigMapPropertySource.java:50) [spring-cloud-kubernetes-fabric8-config-2.0.2.jar:2.0.2]
at org.springframework.cloud.kubernetes.fabric8.config.Fabric8ConfigMapPropertySourceLocator.getMapPropertySource(Fabric8ConfigMapPropertySourceLocator.java:51) [spring-cloud-kubernetes-fabric8-config-2.0.2.jar:2.0.2]
at org.springframework.cloud.kubernetes.commons.config.ConfigMapPropertySourceLocator.getMapPropertySourceForSingleConfigMap(ConfigMapPropertySourceLocator.java:81) [spring-cloud-kubernetes-commons-2.0.2.jar:2.0.2]
at org.springframework.cloud.kubernetes.commons.config.ConfigMapPropertySourceLocator.lambda$locate$0(ConfigMapPropertySourceLocator.java:67) [spring-cloud-kubernetes-commons-2.0.2.jar:2.0.2]
at java.util.ArrayList.forEach(ArrayList.java:1259) ~[na:1.8.0_282]
at org.springframework.cloud.kubernetes.commons.config.ConfigMapPropertySourceLocator.locate(ConfigMapPropertySourceLocator.java:67) [spring-cloud-kubernetes-commons-2.0.2.jar:2.0.2]
at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:51) ~[spring-cloud-context-3.0.2.jar:3.0.2]
at org.springframework.cloud.bootstrap.config.PropertySourceLocator.locateCollection(PropertySourceLocator.java:47) ~[spring-cloud-context-3.0.2.jar:3.0.2]
at org.springframework.cloud.bootstrap.config.PropertySourceBootstrapConfiguration.initialize(PropertySourceBootstrapConfiguration.java:95) ~[spring-cloud-context-3.0.2.jar:3.0.2]
at org.springframework.boot.SpringApplication.applyInitializers(SpringApplication.java:650) ~[spring-boot-2.4.5.jar:2.4.5]
at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:403) ~[spring-boot-2.4.5.jar:2.4.5]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.4.5.jar:2.4.5]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1340) ~[spring-boot-2.4.5.jar:2.4.5]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1329) ~[spring-boot-2.4.5.jar:2.4.5]
at com.ubs.wma.service.accountgroup.AccountGroupServiceApplication.main(AccountGroupServiceApplication.java:19) ~[classes/:na]
Caused by: java.net.ConnectException: Failed to connect to /10.242.0.1:443
at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:265) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:183) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:224) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:108) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:88) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.connection.Transmitter.newExchange(Transmitter.java:169) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[okhttp-3.14.9.jar:na]
at io.fabric8.kubernetes.client.utils.BackwardsCompatibilityInterceptor.intercept(BackwardsCompatibilityInterceptor.java:133) ~[kubernetes-client-4.13.2.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[okhttp-3.14.9.jar:na]
at io.fabric8.kubernetes.client.utils.OIDCTokenRefreshInterceptor.intercept(OIDCTokenRefreshInterceptor.java:41) ~[kubernetes-client-4.13.2.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[okhttp-3.14.9.jar:na]
at io.fabric8.kubernetes.client.utils.ImpersonatorInterceptor.intercept(ImpersonatorInterceptor.java:68) ~[kubernetes-client-4.13.2.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[okhttp-3.14.9.jar:na]
at io.fabric8.kubernetes.client.utils.HttpClientUtils.lambda$createHttpClient$3(HttpClientUtils.java:151) ~[kubernetes-client-4.13.2.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117) ~[okhttp-3.14.9.jar:na]
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:229) ~[okhttp-3.14.9.jar:na]
at okhttp3.RealCall.execute(RealCall.java:81) ~[okhttp-3.14.9.jar:na]
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:472) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:435) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:402) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:384) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:935) ~[kubernetes-client-4.13.2.jar:na]
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:220) ~[kubernetes-client-4.13.2.jar:na]
... 18 common frames omitted
Caused by: java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_282]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_282]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_282]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_282]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_282]
at java.net.Socket.connect(Socket.java:607) ~[na:1.8.0_282]
at okhttp3.internal.platform.Platform.connectSocket(Platform.java:130) ~[okhttp-3.14.9.jar:na]
at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:263) ~[okhttp-3.14.9.jar:na]
... 54 common frames omitted
向我的部署添加了 Role 和 RoleBinding 资源，如下所示：
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: namespace-reader
rules:
- apiGroups: ["", "extensions", "apps"]
resources: ["configmaps", "pods", "services", "endpoints", "secrets"]
verbs: ["get", "list", "watch"]
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: namespace-reader-binding
namespace: default
subjects:
- kind: ServiceAccount
name: default
apiGroup: ""
roleRef:
kind: Role
name: namespace-reader
apiGroup: ""
我的 bootstrap.yaml 配置如下所示：
spring:
cloud:
kubernetes:
config:
sources:
- name: some-service
namespace: ${MY_POD_NAMESPACE}
我的服务部署如下所示：
apiVersion: apps/v1
kind: Deployment
metadata:
name: some-service
spec:
selector:
matchLabels:
app: some-service
template:
metadata:
labels:
app: some-service
spec:
containers:
- name: some-service
image: registry/some-service:latest
resources:
requests:
memory: 320Mi
limits:
memory: 512Mi
ports:
- containerPort: 8080
env:
- name: SPRING_PROFILES_ACTIVE
value: "some-profile"
- name: MY_POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
livenessProbe:
httpGet:
path: /actuator/health/liveness
port: 8080
initialDelaySeconds: 40
readinessProbe:
httpGet:
path: /actuator/health/readiness
port: 8080
initialDelaySeconds: 40
lifecycle:
preStop:
exec:
command: [ "sh", "-c", "sleep 10" ]
最后，我的 configmap 如下所示：
apiVersion: v1
data:
application-properties.yaml: 'property: "value"'
kind: ConfigMap
metadata:
labels:
app.kubernetes.io/managed-by: Helm
name: my-configmap
【问题讨论】：
-
kubectl get configmap my-configmap -n my-namespace的输出是什么？ -
我按预期得到了 configmap。问题是我必须理解的许可。给定一个使用集群角色绑定到命名空间的管理员访问权限解决了这个问题。
-
@BubaConteh 很高兴您找到了解决方案。请为您的评论提供额外的解释，以便为未来的读者提供更多可见性，并表明问题现已解决。
标签： java spring-boot kubernetes namespaces configmap