How to setup cPanel with multiple hard drives on dedicated server

Looking at the output you have at least two MDx RAID volumes:
/dev/md2, which is about 20 GB, and
/dev/md4, which is about 2 TB.

For the root filesystem you have:

Filesystem 1K-blocks Used     Available Use%   Mounted on
rootfs     20317384  11543220 7750220   60%    /

20,317,384 1KiB blocks, or 20 GiB. 12GiB of which are filled.

This also matches the line a bit lower in your post:
Disk /dev/md2: 21.0 GB, 20970405888 bytes

So the mail is correct, one of your filesystems is 60% full.

The other (large) FS mount on home home however is almost empty:
/dev/md4 1917281348 13558900 1807097148 1% /home

You might want to move your SQL database and any other non OS data to /home.

Hennes

Posted 2013-04-11T20:10:24.823

Reputation: 60 739

Well why do I have so much un-utilized space? Can't I somehow partition up to 2TB to / (rootfs)? Or, how can I move stuff to /home which has 2TB on it? – mike719 – 2013-04-11T20:29:15.300

I guess what I think I should ask is I only have one cPanel account on the system, why isn't it located in /home to begin with? – mike719 – 2013-04-11T20:31:56.627

It is customary to split OS and data parts. (Just as in windows where you would install the OS on C:, and the SQL data on D:. If anything goes wrong you just reinstall the OS without formatting D:. Same here, except in a disaster you reinstall and keep /home. However someone ignored this during configuration and put the DB somewhere on /. That is just as silly as putting data in c:/program files/sql/, and sadly just as often done. – Hennes – 2013-04-11T20:32:42.227

That makes sense... ok so how do I move my MySQL (or really, I think I'd like to move the whole cPanel account too) to /home ?? – mike719 – 2013-04-11T20:34:16.230

question 1: Is there important data in the database. Question 2: Is there a backup of that data. Action 1: Either make that backup or make sure how you can restore it. (if not read up on sqldump). Only then consider moving the database. – Hennes – 2013-04-11T20:37:29.847

Yes there is important data, the database is almost 7GB. I know about sqldump but not sure how to move it to a different partition. – mike719 – 2013-04-11T20:39:21.473

If have limited experience with MySQL databases, so read up on this and double check things! However one solution seems to be:

Make a place for the data on /home. e.g. mkdir /home/var_mysql
Set the right permissions on the dir (e.g right people access)
Stop SQL from running service mysql stop
move the old data to the new location ( 7 GB of data may take a few seconds to move mv /var/lib/mysql /home/var_mysql
Create a link from the old location to the new one. (ln -s /var/lib/mysql /home/var_mysql

6 Once this is done restart mysql start mysql server 7 document this. – Hennes – 2013-04-11T20:42:12.660

So, did someone at OVH screw up when they configured my server for me? Or how can I make it so that any new cPanel accounts I make will go to /home instead of / ??? – mike719 – 2013-04-11T21:09:28.420

I never used cpanal, no idea. 2) I do not know who configured your machine for you. Rule of thumb however: If you want to do something yourway then configure it yourself. (Note that OVH's default config might very well work fine for 90% of their users.) Anyway. SE is getting correct with the "Please avoid extended discussions in comments." part.

< – Hennes – 2013-04-11T21:12:27.217

How to setup cPanel with multiple hard drives on dedicated server

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