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Improvement
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Resolution: Unresolved
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Minor
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None
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Jenkins ver. 2.89.4, Kubernetes plugin 1.3.2
Summary
Specifying a containerTemplate with envVars: [envVar(key: 'test.key', value: 'value')] fails (on Kubernetes version <1.8) and user is not notified of the failure.
Description
I was trying to configure an environment variable with a dot (".") in the name (for Elasticsearch, where it's suggested in their documentation) for a containerTemplate, the job didn't fail but also didn't finish. It got stuck at provisioning a pod.
Defining non-C-identifier env variable names did not work prior to Kubernetes version 1.8 and we're using 1.7, so it's expected that the pod creation fails. However, I'd expect the job to also fail and to see an informative error message in the job output.
Currently, the job hangs with the following message:
Still waiting to schedule task All nodes of label ‘pipeline-docker-build-1748220349’ are offline
When looking at the logs for the plugin, the following logs repeat multiple times, with different suffixes for the pod name:
Mar 21, 2018 11:36:53 AM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud In provisioning : [pipeline-docker-build-1748220349-zn6bq-dxt2q]
Mar 21, 2018 11:36:53 AM FINE org.csanchez.jenkins.plugins.kubernetes.KubernetesLauncher Creating Pod: pipeline-docker-build-1748220349-zn6bq-dxt2q in namespace jenkins
Mar 21, 2018 11:36:54 AM WARNING org.csanchez.jenkins.plugins.kubernetes.KubernetesLauncher launch
Error in provisioning; agent=KubernetesSlave name: pipeline-docker-build-1748220349-zn6bq-dxt2q, template=PodTemplate{, name='pipeline-docker-build-1748220349-zn6bq', namespace='jenkins', label='pipeline-docker-build-1748220349', volumes=[org.csanchez.jenkins.plugins.kubernetes.volumes.HostPathVolume@2fae427c], containers=[ContainerTemplate{..}, ContainerTemplate{name='es', image='docker.elastic.co/elasticsearch/elasticsearch-oss:6.2.2', envVars=[KeyValueEnvVar [getValue()=value, getKey()=test.key]]}, ContainerTemplate{..}, ContainerTemplate{..}]}
io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: POST at: https://kubernetes.default.svc.cluster.local/api/v1/namespaces/jenkins/pods. Message: Pod "pipeline-docker-build-1748220349-zn6bq-dxt2q" is invalid: spec.containers[1].env[1].name: Invalid value: "test.key": a valid C identifier must start with alphabetic character or '_', followed by a string of alphanumeric characters or '_' (e.g. 'my_name', or 'MY_NAME', or 'MyName', regex used for validation is '[A-Za-z_][A-Za-z0-9_]*'). Received status: Status(apiVersion=v1, code=422, details=StatusDetails(causes=[StatusCause(field=spec.containers[1].env[1].name, message=Invalid value: "test.key": a valid C identifier must start with alphabetic character or '_', followed by a string of alphanumeric characters or '_' (e.g. 'my_name', or 'MY_NAME', or 'MyName', regex used for validation is '[A-Za-z_][A-Za-z0-9_]*'), reason=FieldValueInvalid, additionalProperties={})], group=null, kind=Pod, name=pipeline-docker-build-1748220349-zn6bq-dxt2q, retryAfterSeconds=null, additionalProperties={}), kind=Status, message=Pod "pipeline-docker-build-1748220349-zn6bq-dxt2q" is invalid: spec.containers[1].env[1].name: Invalid value: "test.key": a valid C identifier must start with alphabetic character or '_', followed by a string of alphanumeric characters or '_' (e.g. 'my_name', or 'MY_NAME', or 'MyName', regex used for validation is '[A-Za-z_][A-Za-z0-9_]*'), metadata=ListMeta(resourceVersion=null, selfLink=null, additionalProperties={}), reason=Invalid, status=Failure, additionalProperties={}).
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.requestFailure(OperationSupport.java:470)
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.assertResponseCode(OperationSupport.java:409)
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:379)
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:343)
at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleCreate(OperationSupport.java:226)
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleCreate(BaseOperation.java:769)
at io.fabric8.kubernetes.client.dsl.base.BaseOperation.create(BaseOperation.java:356)
at org.csanchez.jenkins.plugins.kubernetes.KubernetesLauncher.launch(KubernetesLauncher.java:105)
at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:285)
at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Mar 21, 2018 11:36:54 AM FINER org.csanchez.jenkins.plugins.kubernetes.KubernetesLauncher Removing Jenkins node: pipeline-docker-build-1748220349-zn6bq-dxt2q
Mar 21, 2018 11:36:54 AM INFO org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave _terminate Terminating Kubernetes instance for agent pipeline-docker-build-1748220349-zn6bq-dxt2q
Mar 21, 2018 11:36:54 AM WARNING org.csanchez.jenkins.plugins.kubernetes.KubernetesSlave _terminate Failed to delete pod for agent jenkins/pipeline-docker-build-1748220349-zn6bq-dxt2q: not found