Controlling the Apache web service
When we are ready to test the changes made, we can perform a pre-flight check with the following command:
# apachectl configtest
You may receive an error message reporting that the hostname could not be resolved. This is a warning and is okay for the moment. The warning is shown in the following screenshot:
The Syntax Ok message at the end is what we want to see; with this, we know that we can restart the web server. Issuing a reload command to the service will force a graceful restart; wait for the active connections to complete before the restart is initiated:
$ sudo systemctl reload httpd
The effect of the change ...
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