How do I enable SELinux on an analytics server?

Purpose

Perform this procedure to enable SELinux on an analytics server.

Note: You must enable permissive mode on a station before you can enable enforcing mode on the station.

Note: You require root user privileges on the analytics server.

Note: A leading # character in a command line represents the root user prompt, and is not to be included in a typed command.

Steps
 

Log in as the root user on the analytics server station.


Open a console window.


Enter the following:

cd /opt/nsp/tools/selinux/tools/bin ↵


Check for required OS packages
 

Enter the following:

./selinuxenable.sh -c ↵

Any missing OS packages required by SELinux are listed.


If the message indicates that one or more required SELinux packages are not installed, enter the following:

dnf -y install package_1 package_2 ... package_n

where package_1 package_2 ... package_n are the names of the listed packages

The packages are installed.


Enable permissive mode
 

Enter the following:

./selinuxenable.sh -p ↵

The SELinux mode is set to permissive.


Apply SELinux labels
 

Enter the following:

/opt/nsp/tools/selinux/installer/bin/nsp-selinux-config.bash ↵

The script loads the required AVC policy, analytics_nsp_domain.pp, and labels the files and directories named in the policy.


Enter the following to back up the system audit logs:

cp /var/log/audit/audit.log* backup_location

where backup_location is a secure location on a separate station


Enter the following to delete the system audit logs and thereby clear the SELinux AVC history:

rm -f /var/log/audit/audit.log* ↵


10 

Stop the analytics server.

  1. Enter the following to switch to the nsp user:

    su - nsp ↵

  2. Enter the following:

    bash$ /opt/nsp/analytics/bin/AnalyticsAdmin.sh stop ↵

    The analytics server stops.

  3. Enter the following to switch back to the root user:

    bash$ su - ↵


11 

Enter the following:

systemctl reboot ↵

The analytics server station reboots.

After the reboot, the SELinux labels take effect as SELinux runs in targeted permissive mode in the nsp_domain_t domain.


12 

After the reboot, enter the following to verify that the required processes are running in the nsp_domain_t domain:

ps -aefZ | grep /opt/nsp/os/tomcat/bin/ ↵

Process entries like the following are listed:

system_u:system_r:nsp_domain_t:s0 process_description


13 

If any listed entry does not include nsp_domain_t, contact technical support for assistance.


14 

Enter the following to verify that the policy file is loaded.

semodule -l | egrep 'nsp' ↵

The policy file is listed, as shown below:

analytics_nsp_domain


15 

If the analytics_nsp_domain policy is not listed, contact technical support for assistance.


16 

Close the open console windows.

End of steps