How do you configure MySQL to use block storage on Ubuntu 14.04?

Within /etc/mysql/my.conf, you can easily set datadir=/mnt/your_block/mysql, but there are some deeper issues with apparmor. How do I reconfigure apparmor to acknowledge my new datadir?

I’ve followed directions at [this] ( StackOverflow post, but upon completion I get ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/mnt/volume-nyc1-01/mysql/mysqld.sock'

I can’t find mysqld.sock.

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Melissa Anderson
DigitalOcean Employee
DigitalOcean Employee badge
July 21, 2016
Accepted Answer

Here are the commands I used (see reply above):

mkdir /mnt/disk002/mysql
cp -R /var/lib/mysql /mnt/disk002/mysql/
cp /etc/mysql/my.cnf /root/my.cnf.backup
emacs /etc/mysql/my.cnf

	#datadir		= /var/lib/mysql
	datadir = /mnt/disk002/mysql

chown -R mysql:mysql /mnt/disk002/mysql
mv /var/lib/mysql /var/lib/mysql-old
ln -s /mnt/disk002/mysql /var/lib/mysql 
echo "alias /var/lib/mysql/ -> /mnt/disk002/mysql/," >> /etc/apparmor.d/tunables/alias
sudo /etc/init.d/apparmor reload

start mysql
start: Job failed to start

I’m having no luck on Ubuntu 14.04. I followed the StackOverflow commands above and when I attempt to restart mysql I get:

2016-08-25 15:54:08 1909 [ERROR] Fatal error: Can’t open and lock privilege tables: Table ‘mysql.user’ doesn’t exist

in the error log.

Is there an official DigitalOcean tutorial for 14.04?

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up

Get our biweekly newsletter

Sign up for Infrastructure as a Newsletter.

Hollie's Hub for Good

Working on improving health and education, reducing inequality, and spurring economic growth? We'd like to help.

Become a contributor

Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.

Welcome to the developer cloud

DigitalOcean makes it simple to launch in the cloud and scale up as you grow — whether you're running one virtual machine or ten thousand.

Learn more
DigitalOcean Cloud Control Panel