如果你K8s集群内的机器配置的DNS Server也是coredns，那就可以正常解析clusterIP对应的service的
最初ClusterIP的设计也是让任务管理的Pod来使用，例如flink-kubernetes-operator[1] [1]. https://github.com/apache/flink-kubernetes-operator Best, Yang yidan zhao <hinobl...@gmail.com> 于2022年7月12日周二 13:17写道： > 我用 flink run -m 方式指定 clusterIp 是可以提交任务的。 > 那么使用 --target kubernetes-session > -Dkubernetes.cluster-id=my-first-flink-cluster 的方式，为什么不能智能点拿到对应 > cluster 的 svc 的 clusterIp 去提交呢。 > > yidan zhao <hinobl...@gmail.com> 于2022年7月12日周二 12:50写道： > > > > 如果是在 k8s-master-node 上，可不可以直接用 ClusterIp 呢? > > > > > > 其次，NodePort我大概理解，一直不是很懂 LoadBalancer 方式是什么原理。 > > > > yidan zhao <hinobl...@gmail.com> 于2022年7月12日周二 12:48写道： > > > > > > 我理解的 k8s 集群内是组成 k8s 的机器，是必须在 pod 内？我在k8s的node上也不可以是吧。 > > > > > > Yang Wang <danrtsey...@gmail.com> 于2022年7月12日周二 12:07写道： > > > > > > > > 日志里面已经说明的比较清楚了，如果用的是ClusterIP的方式，那你的Flink > > > > client必须在k8s集群内才能正常提交。例如：起一个Pod，然后再pod里面执行flink run > > > > 否则你就需要NodePort或者LoadBalancer的方式了 > > > > > > > > 2022-07-12 10:23:23,021 WARN > > > > org.apache.flink.kubernetes.KubernetesClusterDescriptor [] - > > > > Please note that Flink client operations(e.g. cancel, list, stop, > > > > savepoint, etc.) won't work from outside the Kubernetes cluster since > > > > 'kubernetes.rest-service.exposed.type' has been set to ClusterIP. > > > > > > > > > > > > Best, > > > > Yang > > > > > > > > yidan zhao <hinobl...@gmail.com> 于2022年7月12日周二 10:40写道： > > > > > > > > > 如下步骤参考的文档 > > > > > > https://nightlies.apache.org/flink/flink-docs-release-1.15/docs/deployment/resource-providers/native_kubernetes/#starting-a-flink-session-on-kubernetes > > > > > > > > > > 版本：1.15 > > > > > > > > > > （1）创建集群： > > > > > > > > > > > https://nightlies.apache.org/flink/flink-docs-release-1.15/docs/deployment/resource-providers/native_kubernetes/#starting-a-flink-session-on-kubernetes > > > > > （2）提交任务： > > > > > ./bin/flink run \ > > > > > --target kubernetes-session \ > > > > > -Dkubernetes.cluster-id=my-first-flink-cluster \ > > > > > ./examples/streaming/TopSpeedWindowing.jar > > > > > > > > > > svc是ClusterIp类型 > > > > > > > > > > 第二步提交任务环节，显示如下： > > > > > Executing example with default input data. > > > > > Use --input to specify file input. > > > > > Printing result to stdout. Use --output to specify output path. > > > > > 2022-07-12 10:23:23,021 WARN > > > > > org.apache.flink.kubernetes.KubernetesClusterDescriptor [] - > > > > > Please note that Flink client operations(e.g. cancel, list, stop, > > > > > savepoint, etc.) won't work from outside the Kubernetes cluster > since > > > > > 'kubernetes.rest-service.exposed.type' has been set to ClusterIP. > > > > > 2022-07-12 10:23:23,027 INFO > > > > > org.apache.flink.kubernetes.KubernetesClusterDescriptor [] - > > > > > Retrieve flink cluster my-first-flink-cluster successfully, > JobManager > > > > > Web Interface: http://my-first-flink-cluster-rest.test:8081 > > > > > 2022-07-12 10:23:23,044 WARN > > > > > org.apache.flink.kubernetes.KubernetesClusterDescriptor [] - > > > > > Please note that Flink client operations(e.g. cancel, list, stop, > > > > > savepoint, etc.) won't work from outside the Kubernetes cluster > since > > > > > 'kubernetes.rest-service.exposed.type' has been set to ClusterIP. > > > > > > > > > > ------------------------------------------------------------ > > > > > The program finished with the following exception: > > > > > org.apache.flink.client.program.ProgramInvocationException: The > main > > > > > method caused an error: Failed to execute job > > > > > 'CarTopSpeedWindowingExample'. > > > > > ... > > > > > Caused by: org.apache.flink.util.FlinkException: Failed to execute > job > > > > > 'CarTopSpeedWindowingExample'. > > > > > ... > > > > > Caused by: org.apache.flink.runtime.client.JobSubmissionException: > > > > > Failed to submit JobGraph. > > > > > ... > > > > > Caused by: > org.apache.flink.util.concurrent.FutureUtils$RetryException: > > > > > Could not complete the operation. Number of retries has been > > > > > exhausted. > > > > > ... > > > > > Caused by: java.util.concurrent.CompletionException: > > > > > java.net.UnknownHostException: my-first-flink-cluster-rest.test: > Name > > > > > or service not known > > > > > ... > > > > > Caused by: java.net.UnknownHostException: > > > > > my-first-flink-cluster-rest.test: Name or service not known > > > > > > > > > > > > > > > 如上，根据 --target kubernetes-session > > > > > -Dkubernetes.cluster-id=my-first-flink-cluster 找到的提交入口为 > > > > > > my-first-flink-cluster-rest.test。这个应该是根据k8s生成的dns，test是flink的namespace。 > > > > > > > > > > 我本地也的确并无法解析 my-first-flink-cluster-rest.test 这个。 > > > > > >
