Red Hat System Administration II

Instructions

1. On the workstation machine, use the ssh command to log in to the servera machine as the student user, and then switch to the root user.

   [student@workstation ~]$ ssh student@servera
   ...output omitted...
   [student@servera ~]$ sudo -i
   [sudo] password for student: student
   [root@servera ~]#

2. Open a new terminal window, and log in to the serverb machine as the student user.

   [student@workstation ~]$ ssh student@serverb
   ...output omitted...
   [student@serverb ~]$

3. Create the /home/student/serverlogs directory on the serverb machine. Use the rsync command to securely create an initial copy of the /var/log directory tree on the servera machine in the /home/student/serverlogs directory on the serverb machine.

   1. On the serverb machine, create the /home/student/serverlogs directory to store the synchronized log files from the servera machine.

      [student@serverb ~]$ mkdir ~/serverlogs

   2. On the servera machine, use the rsync command to synchronize the /var/log directory tree on the servera machine to the /home/student/serverlogs directory on the serverb machine. Only the root user can read all the /var/log directory contents on the servera machine. Transfer all the files in the initial synchronization.

      [root@servera ~]# rsync -av /var/log student@serverb:/home/student/serverlogs
      ...output omitted...
      student@serverb's password: student
      sending incremental file list
      log/
      log/README -> ../../usr/share/doc/systemd/README.logs
      log/boot.log
      ...output omitted...
      
      sent 1,390,819 bytes  received 508 bytes  309,183.78 bytes/sec
      total size is 1,388,520  speedup is 1.00

4. On the servera machine, execute the logger "Log files synchronized" command to add an entry in the /var/log/messages log file to reflect when the last synchronization occurred.

   [root@servera ~]# logger "Log files synchronized"

5. Use the rsync command to securely synchronize from the /var/log directory tree on the servera machine to the /home/student/serverlogs directory on the serverb machine. This time, only the changed log files are transferred.

   [root@servera ~]# rsync -av /var/log student@serverb:/home/student/serverlogs
   student@serverb's password: student
   sending incremental file list
   log/messages
   
   sent 3,854 bytes  received 3,807 bytes  2,188.86 bytes/sec
   total size is 1,388,648  speedup is 181.26

6. On the serverb machine, verify the contents of the /home/student/serverlogs/log/messages file with the tail command.

   [student@serverb ~]$ tail -n 5 ~/serverlogs/log/messages
   Mar 22 04:25:08 servera systemd[1]: systemd-hostnamed.service: Deactivated successfully.
   Mar 22 04:25:09 servera systemd[1066]: Starting Mark boot as successful...
   Mar 22 04:25:09 servera systemd[1066]: Finished Mark boot as successful.
   Mar 22 04:25:47 servera chronyd[750]: Selected source 172.25.254.254
   Mar 22 04:26:25 servera root[1213]: Log files synchronized

7. Exit and close the extra terminal.

   [student@serverb ~]$ exit
   logout
   Connection to serverb closed.
   [student@workstation]$

8. Return to the workstation machine as the student user.

   [student@servera ~]$ exit
   logout
   Connection to servera closed.
   [student@workstation]$