Unable to start Jenkins due to /tmp directory mounted with noexec option

Issue

/tmp directory is mounted with noexec

...
Caused by: java.lang.UnsatisfiedLinkError: /tmp/jna
...
failed to map segment from shared object: Operation not permitted▼

Environment

CloudBees Jenkins Enterprise

Resolution

Any of the below solutions can be used.

Permanently Remove noexec from /tmp mount

# 1. Edit /etc/fstab
# Remove noexec from line containing /tmp mount
vi /etc/fstab
# 2. Restart
shutdown -r now
# 3. Confirm /tmp now allows executing
# /tmp should not include noexec
mount -l
# 4. Confirm Jenkins starts correctly
service jenkins start▼

Change java.io.tmpdir

# 1. Edit Jenkins config file
# Add -Djava.io.tmpdir=$JENKINS_HOME/tmp to JENKINS_JAVA_OPTIONS
# Eg. JENKINS_JAVA_OPTIONS="-Djava.io.tmpdir=$JENKINS_HOME/tmp"
vi /etc/sysconfig/jenkins
# 2. Create tmp directory
mkdir $JENKINS_HOME/tmp
# 3. Make sure Jenkins is the owner
chown MY_JENKINS_USER:MY_JENKINS_GROUP $JENKINS_HOME/tmp
# 4. Restart Jenkins
service jenkins restart▼

This article is part of our Knowledge Base and is provided for guidance-based purposes only. The solutions or workarounds described here are not officially supported by CloudBees and may not be applicable in all environments. Use at your own discretion, and test changes in a safe environment before applying them to production systems.