Kubernetes does not show as Cloud Provider

[J]

Hi,

I'm using the latest version of Jenkins (2.32) and the Kubernetes plugin (0.10). I've tried re-installing the plugin a few times. My Jenkins is on an individual machine. The problem is that it never shows Kubernetes as a Cloud Provider (no cloud section in fact); while it works if the docker plugin is installed (able to see docker under a cloud section). 

Is this because my Jenkins master isn't installed on a POD itself; although I should be able to use jenkins from outside the k8s cluster. Any help appreciated. Thanks

[Carlos Sanchez]

It should show, maybe you are missing some plugin dependencies or have dependency conflicts.

Check the jenkins log at startup for errors.

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[J]

I did a new install and I see a bunch of warnings all failing to load modules and all citing the same major minor version error (highlighted below):

INFO: Jenkins is fully up and running

Jan 25, 2017 5:20:12 PM hudson.model.UpdateSite$Plugin getNeededDependencies

WARNING: Could not find dependency cloudbees-registration of mansion-cloud

Jan 25, 2017 5:20:12 PM hudson.model.UpdateSite$Plugin getNeededDependencies

WARNING: Could not find dependency cloudbees-registration of mansion-cloud

Jan 25, 2017 5:20:14 PM hudson.model.UpdateSite$Plugin getNeededDependencies

WARNING: Could not find dependency cloudbees-registration of mansion-cloud

Jan 25, 2017 5:20:14 PM hudson.model.UpdateSite$Plugin getNeededDependencies

WARNING: Could not find dependency cloudbees-registration of mansion-cloud

Jan 25, 2017 5:20:22 PM hudson.model.UpdateCenter$DownloadJob run

INFO: Starting the installation of Kubernetes plugin on behalf of admin

Jan 25, 2017 5:20:23 PM hudson.model.UpdateCenter$UpdateCenterConfiguration download

INFO: Downloading Kubernetes plugin

Jan 25, 2017 5:20:23 PM hudson.PluginManager dynamicLoad

INFO: Attempting to dynamic load /var/lib/jenkins/plugins/kubernetes.jpi

Jan 25, 2017 5:20:24 PM hudson.ExtensionFinder$Sezpoz _find
WARNING: Failed to load org.csanchez.jenkins.plugins.kubernetes.KubectlBuildWrapper$DescriptorImpl 

WARNING: Failed to load org.csanchez.jenkins.plugins.kubernetes.OpenShiftTokenCredentialImpl$DescriptorImpl

WARNING: Failed to load org.csanchez.jenkins.plugins.kubernetes.KubernetesCloud$DescriptorImpl

WARNING: Failed to load org.csanchez.jenkins.plugins.kubernetes.pipeline.PodTemplateStep$DescriptorImpl

WARNING: Failed to load org.csanchez.jenkins.plugins.kubernetes.PodTemplate$DescriptorImpl

WARNING: Failed to load org.csanchez.jenkins.plugins.kubernetes.volumes.NfsVolume$DescriptorImpl 

java.lang.InstantiationException: java.lang.UnsupportedClassVersionError: org/csanchez/jenkins/plugins/kubernetes/volumes/NfsVolume$DescriptorImpl : Unsupported major.minor version 52.0

 

[Carlos Sanchez]

Unsupported major.minor version 52.0

Kubernetes plugin requires Java 8

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[J]

Yep that fixed it. Thanks Carlos. It would be good if you mentioned that on the plugin page or the the github README.

For anyone else that stumbles here, I had to completely remove jdk-7 before this started working.

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