Description

Depending on Linux distribution and version, this option has different names and functions:

Red Hat Enterprise Linux 6.x

Option name: Install or update service

Allows you to install (after a fresh install) or update guests management service (kit upgrade).

Updating the service does not require the guests to be shutdown & restarted

Red Hat Enterprise Linux 7.x and CentOS 7

Option name: Manage 'systemd' services

Allows you to view the service status and update the service configuration file to add dependencies, description, etc...

Be extremely cautious when updating the file. Preferably limit updates to:

• Description=, After=, Before=, Wants= parameters in the Unit section
• TimeoutStopSec= in the Service section
• Restart=, RestartSec=, StartLimitInterval=, StartLimitBurst= parameters in the Service section as described in the How to restart CHARON-VAX/AXP on Linux automatically on failure chapter.

Example: 

In this example the default description has been updated, restart on failure parameters have been added and the service stop timeout has been set to 3 minutes.