RHCSA Rapid Track

Reset your serverX system.

1. List all service units on the system.

   [student@serverX ~]$ sudo systemctl list-units --type=service

2. List all socket units, active and inactive, on the system.

   [student@serverX ~]$ sudo systemctl list-units --type=socket --all

3. Explore the status of the chronyd service. This service is used for network time synchronization (NTP).

   1. Display the status of the chronyd service. Note the process ID of any active daemons.

      [student@serverX ~]$ sudo systemctl status chronyd

   2. Confirm that the listed daemons are running.

      [student@serverX ~]$ ps -p PID

4. Explore the status of the sshd service. This service is used for secure encrypted communication between systems.

   1. Determine if the sshd service is enabled to start at system boot.

      [student@serverX ~]$ sudo systemctl is-enabled sshd

   2. Determine if the sshd service is active without displaying all of the status information.

      [student@serverX ~]$ sudo systemctl is-active sshd

   3. Display the status of the sshd service.

      [student@serverX ~]$ sudo systemctl status sshd

5. List the enabled or disabled states of all service units.

   [student@serverX ~]$ sudo systemctl list-unit-files --type=service