更改JENKINS_HOME时出现“无法创建主目录”错误

Question

Jenkins was running all fine on a RedHat Linux machine (a clean EC2 machine on AWS), until I decided to change the JENKINS_HOME . I simply moved the Jenkins directory from /var/lib/jenkins to /home/ec2-user/jenkins and then created a symlink. (I followed the first answer to this question: Change JENKINS_HOME on Red Hat Linux? ).

However when I restart Jenkins I get the error:

Unable to create the home directory '/var/lib/jenkins'. This is most likely a permission problem. To change the home directory, use JENKINS_HOME environment variable or set the JENKINS_HOME system property.

I tried changing JENKINS_HOME in /etc/sysconfig/jenkins , setting it to the new folder (which I suppose defeats the point of a symlink?) and I still get the same error

Unable to create the home directory '/home/ec2-user/jenkins'.

It is for backup purposes, so that I have all Jenkins data in a mounted external data storage (AWS Elastic File System).

Answer 1

I've figured it out. This error was persisting because the /jenkins/ folder needs to be accessible to user 'jenkins' to run processes, but it couldn't access this folder because it is belongs to the particular logged in user. I changed the mounting to /var/ where jenkins can access as global process, and it solved the problem.

Answer 2

The error seems pretty obvious: " This is most likely a permission problem. "

I assume /home/jenkins does not exists, and the user jenkins does not have write permissions in /home . If you moved the Jenkins home, then you probably did it as root and just forgot to update owner permissions.

You would need to create the home, something like this:

sudo service jenkins stop
# make the changes in /etc/sysconfig/jenkins
sudo mkdir --parents /home/jenkins  # or mv, in your case
sudo chown --recursive jenkins /home/jenkins
sudo service jenkins start

Answer 3

I ran into the same problem, so sharing my solution here:
The user jenkins does not have access to the folder home/ec2-user/jenkins. You can modify the access rights of the folder home/ec2-user/home by changing or adding the user jenkins to owner

sudo chown jenkins /home/ec2-user/jenkins
sudo chmod u+w /home/ec2-user/jenkins

To verify the new ownership, you can do:

ls -ld /home/ec2-user/jenkins