The ``pre_tasks`` keyword just lets you list tasks to run before the roles are called. This will make more sense in a minute. If you look at the names of these tasks, you can see that we are disabling Nagios alerts and then removing the webserver that we are currently updating from the HAProxy load balancing pool.
@ -235,12 +235,12 @@ Finally, in the ``post_tasks`` section, we reverse the changes to the Nagios con