Jason Brome created FLINK-20944:
-----------------------------------
Summary: Launching in application mode requesting a ClusterIP rest
service type results in an Exception
Key: FLINK-20944
URL: https://issues.apache.org/jira/browse/FLINK-20944
Project: Flink
Issue Type: Bug
Components: Deployment / Kubernetes
Affects Versions: 1.12.0
Environment: Kubernetes 1.17
Flink 1.12
Running ./bin/flink from an Ubuntu 18.04 host
Reporter: Jason Brome
Run a Flink job in Kubernetes in application mode, specifying
kubernetes.rest-service.exposed.type=ClusterIP, results in the job being
started, however the call to ./bin/flink throws an UnknownHostException
Exception on the client.
Command line:
{{./bin/flink run-application --target kubernetes-application
-Dkubernetes.cluster-id=myjob-qa
-Dkubernetes.container.image=_SOME_REDACTED_PATH/somrepo/someimage_
-Dkubernetes.service-account=flink-service-account
-Dkubernetes.namespace=myjob-qa
-Dkubernetes.rest-service.exposed.type=ClusterIP local:///opt/flink}}
{{/usrlib/my-job.jar}}
Output:
2021-01-12 20:29:19,047 INFO org.apache.flink.kubernetes.utils.KubernetesUtils
[] - Kubernetes deployment requires a fixed port. Configuration
blob.server.port will be set to 6124
2021-01-12 20:29:19,048 INFO org.apache.flink.kubernetes.utils.KubernetesUtils
[] - Kubernetes deployment requires a fixed port. Configuration
taskmanager.rpc.port will be set to 6122
2021-01-12 20:29:20,369 ERROR
org.apache.flink.kubernetes.kubeclient.Fabric8FlinkKubeClient [] - A Kubernetes
exception occurred.
java.net.UnknownHostException: myjob-qa-rest.myjob-qa: Name or service not known
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) ~[?:1.8.0_275]
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:929)
~[?:1.8.0_275]
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1324)
~[?:1.8.0_275]
at java.net.InetAddress.getAllByName0(InetAddress.java:1277) ~[?:1.8.0_275]
at java.net.InetAddress.getAllByName(InetAddress.java:1193) ~[?:1.8.0_275]
at java.net.InetAddress.getAllByName(InetAddress.java:1127) ~[?:1.8.0_275]
at java.net.InetAddress.getByName(InetAddress.java:1077) ~[?:1.8.0_275]
at
org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.getWebMonitorAddress(HighAvailabilityServicesUtils.java:193)
~[flink-dist_2.12-1.12.0.jar:1.12.0]
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.lambda$createClusterClientProvider$0(KubernetesClusterDescriptor.java:114)
~[flink-dist_2.12-1.12.0.jar:1.12.0]
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.deployApplicationCluster(KubernetesClusterDescriptor.java:185)
~[flink-dist_2.12-1.12.0.jar:1.12.0]
at
org.apache.flink.client.deployment.application.cli.ApplicationClusterDeployer.run(ApplicationClusterDeployer.java:64)
~[flink-dist_2.12-1.12.0.jar:1.12.0]
at
org.apache.flink.client.cli.CliFrontend.runApplication(CliFrontend.java:207)
~[flink-dist_2.12-1.12.0.jar:1.12.0]
at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:974)
~[flink-dist_2.12-1.12.0.jar:1.12.0]
at
org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:1047)
~[flink-dist_2.12-1.12.0.jar:1.12.0]
at
org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
[flink-dist_2.12-1.12.0.jar:1.12.0]
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1047)
[flink-dist_2.12-1.12.0.jar:1.12.0]
------------------------------------------------------------
The program finished with the following exception:
java.lang.RuntimeException:
org.apache.flink.client.deployment.ClusterRetrieveException: Could not create
the RestClusterClient.
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.lambda$createClusterClientProvider$0(KubernetesClusterDescriptor.java:118)
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.deployApplicationCluster(KubernetesClusterDescriptor.java:185)
at
org.apache.flink.client.deployment.application.cli.ApplicationClusterDeployer.run(ApplicationClusterDeployer.java:64)
at org.apache.flink.client.cli.CliFrontend.runApplication(CliFrontend.java:207)
at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:974)
at
org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:1047)
at
org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1047)
Caused by: org.apache.flink.client.deployment.ClusterRetrieveException: Could
not create the RestClusterClient.
... 8 more
Caused by: java.net.UnknownHostException: myjob-qa-rest.myjob-qa: Name or
service not known
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:929)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1324)
at java.net.InetAddress.getAllByName0(InetAddress.java:1277)
at java.net.InetAddress.getAllByName(InetAddress.java:1193)
at java.net.InetAddress.getAllByName(InetAddress.java:1127)
at java.net.InetAddress.getByName(InetAddress.java:1077)
at
org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.getWebMonitorAddress(HighAvailabilityServicesUtils.java:193)
at
org.apache.flink.kubernetes.KubernetesClusterDescriptor.lambda$createClusterClientProvider$0(KubernetesClusterDescriptor.java:114)
... 7 more
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