RHEL 7 Service masking.

Share this link

Many people don’t figure out why a Systemd service can be masked. They understand the need to enable it at boot and start it but why masking it?
Back to basics, a Systemd service can be:

  • manually started with the systemctl start command,
  • automatically started at boot with the systemctl enable command,
  • dbus-activated by another Systemd service (NetworkManager can be triggered like this),
  • socket-activated by some network activities (the printer service cups is a good example).

With this in mind, it becomes clear that masking a Systemd service with the systemctl mask command makes sense for a dbus-activated or a socket-activated service because in these cases stopping or disabling won’t definitively be enough!

Conclusion: If you want to be sure that a service will not start, mask it!

Posted in RHEL7

Leave a Reply

Be the First to Comment!

Notify of
wpDiscuz

RHCSA7: Task of the day

Allowed time: 10 minutes.
Create a XFS file system of 100MB. Mount it under /mnt. Then, increase its size by 50MB.

RHCE7: Task of the day

Allowed time: 10 minutes.
Set up a default secure MariaDB database called maria with a user named muser with all privileges.

Follow me on Twitter

Poll for favorite RHEL 7 book

What is your favorite RHEL 7 book to prepare RHCSA & RHCE exams?

View Results

Loading ... Loading ...

Poll for most difficult RHCSA 7 topic

What do you think is the most difficult RHCSA 7 topic?

View Results

Loading ... Loading ...

Poll for most difficult RHCE 7 topic

What do you think is the most difficult RHCE 7 topic?

View Results

Loading ... Loading ...