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Persistent Volumes permissions (trying to install jenkins persistent)



Hi,

I'm currently trying to create a persistent instance of jenkins and I can't make sense of the documentation about permissions on Persistent Volumes. 

I first attached a new Disk on my VPS, called /dev/vde

then here's what I did

mkfs -t ext3 /dev/vde

Then mount it:

mount -t ext3 /dev/vde /var/lib/jenkins

chmod -R 777 /var/lib/jenkins

Create the persistent volume:

oc create -f ...

kind: PersistentVolume
apiVersion: v1
metadata:
  name: jenkinsdata
  labels:
    type: local
spec:
  capacity:
    storage: 20Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/var/lib/jenkins"

I can see that the the volume has rightly been claimed by the jenkins pod:

oc get pvc
NAME      LABELS                                 STATUS    VOLUME        CAPACITY   ACCESSMODES   AGE
jenkins   template=jenkins-persistent-template   Bound     jenkinsdata   20Gi       RWO           39m

but I'm seeing Permission errors in the deployment logs:


Copying Jenkins configuration to /var/lib/jenkins ... 
cp: cannot create regular file '/var/lib/jenkins/config.xml.tpl': Permission denied 
cp: cannot create directory '/var/lib/jenkins/jobs': Permission denied 
cp: cannot create directory '/var/lib/jenkins/users': Permission denied 
mkdir: cannot create directory '/var/lib/jenkins/plugins': Permission denied 
Copying 1 Jenkins plugins to /var/lib/jenkins ... 
cp: cannot create regular file '/var/lib/jenkins/plugins/': Not a directory 
Creating initial Jenkins 'admin' user ... 
sed: can't read /var/lib/jenkins/users/admin/config.xml: No such file or directory 
/usr/libexec/s2i/run: line 36: /var/lib/jenkins/password: Permission denied 
touch: cannot touch '/var/lib/jenkins/configured': Permission denied 
Running from: /usr/lib/jenkins/jenkins.war 
webroot: EnvVars.masterEnvVars.get("JENKINS_HOME") 
Feb 12, 2016 8:50:29 AM winstone.Logger logInternal 
INFO: Beginning extraction from war file 
Feb 12, 2016 8:50:29 AM winstone.Logger logInternal 
INFO: Winstone shutdown successfully 
Feb 12, 2016 8:50:29 AM winstone.Logger logInternal 
SEVERE: Container startup failed 
java.io.FileNotFoundException: /var/lib/jenkins/war/META-INF/MANIFEST.MF (No such file or directory)
at java.io.FileOutputStream.open0(Native Method) 
at java.io.FileOutputStream.open(FileOutputStream.java:270) 
at java.io.FileOutputStream.<init>(FileOutputStream.java:213) 
at java.io.FileOutputStream.<init>(FileOutputStream.java:162) 
at winstone.HostConfiguration.getWebRoot(HostConfiguration.java:280) 
at winstone.HostConfiguration.<init>(HostConfiguration.java:83) 
at winstone.HostGroup.initHost(HostGroup.java:66) 
at winstone.HostGroup.<init>(HostGroup.java:45) 
at winstone.Launcher.<init>(Launcher.java:143) 
at winstone.Launcher.main(Launcher.java:354) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497) 
at Main._main(Main.java:293) 
at Main.main(Main.java:98)


I thought that setting the permissions to 777 would guarantee that anyone can do anything with the files under /var/lib/jenkins but that is apparently not the case. Of course, ideally I would know what user and group is going to want to use this directory but I have trouble finding out about this, especially since the user is running from within the jenkins container (to be honest this *really* gets me confused).

Any clues, pointers,...?

Candide

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