How to debug SELinux
This documentation describes how to debug SELinux with respect to Atlassian Applications. SELinux is a Linux kernel security module (Application Firewall), which when placed in Enforcing mode, might prevent Atlassian Applications from starting if not properly configured.
SELinux is commonly found enabled with the "enforcing" mode in the Red Hat, CentOS and Fedora linux distributions.
Placing SELinux in permissive mode
If you are experiencing problems starting an Atlassian Application then you can try placing SELinux in permissive mode.
1 - You can verify if SELinux is enable in the Operation System running:
2 - To place SELinux into permissive mode, edit the file /etc/selinux/config and change the line:
3 - And then reboot.
If the Atlassian Application works after rebooting then we suggest checking the /var/log/audit/audit.log file for "java" entries and consulting the SELinux documentation for how to troubleshoot it.