RHEL 7 rc-local service.

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With Systemd, the Init scripts are not there any more. Consequently, the execution of tasks at boot time had to change.

Hopefully, a nice solution has been found: it uses the good old rc.local file.

Now, to execute tasks at boot time, you put them into the /etc/rc.d/rc.local file.

Then, you change the execution permissions on this file:

# chmod u+x /etc/rc.d/rc.local

Besides allowing executions of tasks, this simple operation activates the new rc-local Systemd service for all the further boots (this is like systemctl enable in Systemd language).

Finally, you can start the rc-local service and, this way, test the execution of the rc.local file:

# systemctl start rc-local

SSD optimization is a good example of such a rc-local service.

Posted in RHEL7

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