• Type: Bug
• Resolution: Unresolved
• Priority: Major
• Component/s: kubernetes-plugin
• Labels:

  • kubernetes-plugin
  • pipeline
  • slave
• Environment:

  Kuberetes 1.8
  Jenkins 2.107
  Kubernetes Plugin: 1.2.1
  Java Version: 1.8.0_151
  Jenkins Master running in Docker Container in k8s

1. failure.log

   9 kB

   2018-02-27 03:53

[JENKINS-49759] Can't create temp file in Kubernetes Plugin Pipeline

Michael MacFadden created issue - 2018-02-27 03:55

Michael MacFadden made changes - 2018-02-27 03:56

Description

Original: We are having an issue where we can not create a temp file in a build pipeline within a PodTemplate. Oddly inserting a random 'sh' command before the creation of the temp file solved the problem. Here is the code that fails:   {code:java} import hudson.FilePath; import jenkins.model.Jenkins; def label = "mynode" podTemplate(   label: label,   nodeSelector: "kops.k8s.io/instancegroup=jenkins-workers",   containers: [containerTemplate(name: 'kubectl', image: 'lachlanevenson/k8s-kubectl:v1.9.3', command: 'cat', ttyEnabled: true)]) {   node(label) {     container("kubectl") {       def workspace = new FilePath(Jenkins.getInstance().getComputer(env.NODE_NAME).getChannel(), env.WORKSPACE);       workspace.createTempFile("test", ".txt")       sh "ls -al"     }   } } {code}   The full log is attached, but essentially we get the following exception: {code:java} Caused: java.io.IOException: Failed to create a temp file on /home/jenkins/workspace/folder/test-job at hudson.FilePath.createTempFile(FilePath.java:1330) {code} Oddly, if we add a "sh" command before the creation of the temp file the job succeeds. The following code works: {code:java} import hudson.FilePath; import jenkins.model.Jenkins; def label = "mynode" podTemplate(   label: label,   nodeSelector: "kops.k8s.io/instancegroup=jenkins-workers",   containers: [containerTemplate(name: 'kubectl', image: 'lachlanevenson/k8s-kubectl:v1.9.3', command: 'cat', ttyEnabled: true)]) {   node(label) {     container("kubectl") {       sh "ls -al"       def workspace = new FilePath(Jenkins.getInstance().getComputer(env.NODE_NAME).getChannel(), env.WORKSPACE);       workspace.createTempFile("test", ".txt")       sh "ls -al"     }   } } {code} It does not seem to matter what the "sh" command before the temp file creation is. We have used "pwd", "echo $HOME", etc. and they all have the same effect of making the pipeline work. Of course both sh "ls -al" commands were put in there as debugging steps, and it just so happened that the first one accidentally made the pipeline work.

New: We are having an issue where we can not create a temp file in a build pipeline within a PodTemplate. Oddly inserting a random 'sh' command before the creation of the temp file solved the problem. Here is the code that fails:   {code:java} import hudson.FilePath; import jenkins.model.Jenkins; def label = "mynode" podTemplate(   label: label,   nodeSelector: "kops.k8s.io/instancegroup=jenkins-workers",   containers: [containerTemplate(name: 'kubectl', image: 'lachlanevenson/k8s-kubectl:v1.9.3', command: 'cat', ttyEnabled: true)]) {   node(label) {     container("kubectl") {       def workspace = new FilePath(Jenkins.getInstance().getComputer(env.NODE_NAME).getChannel(), env.WORKSPACE);       workspace.createTempFile("test", ".txt")       sh "ls -al"     }   } } {code}   The full log is attached, but essentially we get the following exception: {code:java} Caused: java.io.IOException: Failed to create a temp file on /home/jenkins/workspace/folder/test-job at hudson.FilePath.createTempFile(FilePath.java:1330) {code} Oddly, if we add a "sh" command before the creation of the temp file the job succeeds. The following code works: {code:java} import hudson.FilePath; import jenkins.model.Jenkins; def label = "mynode" podTemplate(   label: label,   nodeSelector: "kops.k8s.io/instancegroup=jenkins-workers",   containers: [containerTemplate(name: 'kubectl', image: 'lachlanevenson/k8s-kubectl:v1.9.3', command: 'cat', ttyEnabled: true)]) {   node(label) {     container("kubectl") {       sh "ls -al" // This added code somehow makes this pipeline succeed.       def workspace = new FilePath(Jenkins.getInstance().getComputer(env.NODE_NAME).getChannel(), env.WORKSPACE);       workspace.createTempFile("test", ".txt")       sh "ls -al"     }   } } {code} It does not seem to matter what the "sh" command before the temp file creation is. We have used "pwd", "echo $HOME", etc. and they all have the same effect of making the pipeline work. Of course both sh "ls -al" commands were put in there as debugging steps, and it just so happened that the first one accidentally made the pipeline work.

Jesse Glick made changes - 2019-07-16 19:42

Assignee

Original: Carlos Sanchez [ csanchez ]