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Type:
Bug
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Resolution: Fixed
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Priority:
Blocker
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Component/s: kubernetes-credentials-plugin, kubernetes-plugin
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Environment:Kubernetes 1.15.6
Kubernetes-plugin 1.23.0
Jenkins LTS 2.204.1
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kubernetes 1.23.3
In latest release (1.23.0) I'm getting the below error while trying to use the "Setup Kubernetes CLI (kubectl)" in a job where field "Certificate of authority" is empty and field "Credentials" is populated from type "Username and password":
[...]
Building in workspace /var/jenkins_home/workspace/backups
$ kubectl version
FATAL: Failed to run kubectl version 1
java.io.IOException: Failed to run kubectl version 1
at org.csanchez.jenkins.plugins.kubernetes.KubectlBuildWrapper.setUp(KubectlBuildWrapper.java:94)
at jenkins.tasks.SimpleBuildWrapper.setUp(SimpleBuildWrapper.java:146)
at hudson.model.Build$BuildExecution.doRun(Build.java:157)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:504)
at hudson.model.Run.execute(Run.java:1853)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:427)
Finished: FAILURE
The previous version (1.22.5) works fine and after downgrading all jobs started to work again.
This happened in two independent Jenkins boxes running the latest LTS Jenkins ver. 2.204.1.
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After further investigation, the issue seems to be related to kubernetes config file setup. Although I didn't specify a certificate, the property insecure-skip-tls-verify is set to false, plus the current-context is not set. Sample generated file below:Â
$ cat .kube2280516965942825275config --- clusters: - cluster: insecure-skip-tls-verify: false server: "https://api.k8s-cluster.dummy.com" name: "k8s" contexts: - context: cluster: "k8s" user: "cluster-admin" name: "k8s" users: - name: "cluster-admin" user: as-user-extra: {} password: "XXXXXXXXXXXXX" username: "jenkins"
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