h1. How to release space on HDD

{{>toc}}

Why it is vital to release space on HDD is described in section [[What happens if disk becomes full]].

*Attention! In case if you're a Streamco customer, don't perform operations below by yourself!
You could spoil all your data.
Technical support team releases space without interaction with customer, using monitoring system.*

First obtain root access - see [[How to acquire root access]].

h2. /var section.

h3. Deletion of useless data.

* *clear Asterisk log file*:
<pre>
# dd if=/dev/null of=/var/log/asterisk/messages
</pre>

This operation is done automatically by system once a day.
However in case if you enabled Asterisk log, the file can grow very fast.
For example, if you perform [[Debug SIP protocol in Asterisk]].
In this case you might need manual cleaning.

* *clear Smartswitch log files*:
Check which file has big size:
<pre>
# cd /var/log/smartswitch
# mc
</pre>
Clear big files:
<pre>
# dd if=/dev/null of=/var/log/smartswitch/<имя файла>
</pre>
This operation is done automatically by system once a day.
However if you enabled logging via [[Logging]] system, the file can grow quickly.
In this case you might need manual cleaning.
*Caution! Do not delete information from asterisk.log!*
Otherwise it won't be possible to restore CDRs in DB in case of DB failure.

* *delete debug core memory dumps*:
<pre>
# rm /var/log/*core
</pre>

h3. Deletion of useful data.

* *delete part of configuration backups*.
If your configuration is quite big, backups can take much space.
You can delete  old backups , which you won't need.
Restoring from backup is described in section [[Backup and recovery]]
<pre>
# cd /var/backups/smartswitch
# mc
</pre>

Choose file by date.
Select file with 'Insert'.
Delete selected with F8.

[[Как освободить место на жестком диске|Русский перевод]]