Unable to update appliance; /var is 100% full

Description:

The appliance is unable to perform software updates, and there are no conflicting active jobs.

Symptom:

You may have an alert (see "bell" icon at the top right of the web interface) with a message 
like "Disk space usage threshold exceeded. Disk /var is 100% full (23 MB free)."

Resolution:

The following steps change the YUM cached directory from /var to /backups.

1. SSH to the appliance and run:
mkdir -p /backups/yumcache
vim /etc/yum.conf

2. In the yum.conf, cursor to the beginning of the [main]->cachedir line.

3. To preserve the original variable type:
yy
p
0
i
#
<escape>

4. Up arrow and cursor to the '/' that is the right of the "cachedir=" and type:
c
$
/backups/yumcache/$basearch/$releasever
<escape>
:
w
q

5. You should now be back at the command prompt. Retry the update via the web interface,
unitrends-cli, or other method you were attempting.

Note:  Validated for KB on 1/25/2022.  Used to update a CentOS7 UB appliance from 10.5.8-2 to 10.5.9-3.

 

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