Changes

Therefore, we are going to learn in this section how to monitor disk space activity to help take corrective action.

# Launch your '''c7host''' and '''centos2''' VMs.

The '''cron''' daemon is used to refer to these shell scripts (or other commands or programs) and to run them on a pre-determined basis. The term '''cron''' comes from the old word '''chronograph''' meaning a special type of watch (actually a ''stop-watch'') to help monitor and schedule routine tasks.

#Perform this section in your '''c7host''' machine

We will now use LVM in order to grow and reduce our file system, using extra unallocated space on our existing (default) virtual hard disk for our centos2 VM.

# Remain in your '''centos2''' VM for this section.

We can '''add a new <u>virtual</u> hard-drive''' (which will serve as a physical volume to the volume group), and extend the '''home''' logical volume to make use of the new available space. Creating virtual hard drives is not only inexpensive, but a great way for students to learn now to simulate growing the size of the file system.

# Remain in your '''centos2''' VM for this section.

The Linux system administrator also has the ability to manually '''mount''' (connect) and '''un-mount''' (disconnect) partitions in order to perform maintenance on the file system (for example un-mounting the '''/home''' partition to install software and prevent users from logging in during that process).

# Perform this part in your '''centos2''' VM.

{{Admon/important|Time for a new backup!|If you have successfully completed this lab, make a new backup of your virtual machines as well as your host machine.}}

# Make certain that your '''c7host''' and '''centos2''' VMs are running.