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How To Install MySQL on Ubuntu 16.04

Published on November 23, 2016
Default avatar
By Hazel Virdó
senior technical writer
How To Install MySQL on Ubuntu 16.04
Not using Ubuntu 16.04?Choose a different version or distribution.

Introduction

MySQL is an open-source database management system, commonly installed as part of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It uses a relational database and SQL (Structured Query Language) to manage its data.

The short version of the installation is simple: update your package index, install the mysql-server package, and then run the included security script.

  1. sudo apt-get update
  2. sudo apt-get install mysql-server
  3. mysql_secure_installation

This tutorial will explain how to install MySQL version 5.7 on a Ubuntu 16.04 server. However, if you’re looking to update an existing MySQL installation to version 5.7, you can read this MySQL 5.7 update guide instead.

Prerequisites

To follow this tutorial, you will need:

Step 1 — Installing MySQL

On Ubuntu 16.04, only the latest version of MySQL is included in the APT package repository by default. At the time of writing, that’s MySQL 5.7

To install it, simply update the package index on your server and install the default package with apt-get.

  1. sudo apt-get update
  2. sudo apt-get install mysql-server

You’ll be prompted to create a root password during the installation. Choose a secure one and make sure you remember it, because you’ll need it later. Next, we’ll finish configuring MySQL.

Step 2 — Configuring MySQL

For fresh installations, you’ll want to run the included security script. This changes some of the less secure default options for things like remote root logins and sample users. On older versions of MySQL, you needed to initialize the data directory manually as well, but this is done automatically now.

Run the security script.

  1. mysql_secure_installation

This will prompt you for the root password you created in Step 1. You can press Y and then ENTER to accept the defaults for all the subsequent questions, with the exception of the one that asks if you’d like to change the root password. You just set it in Step 1, so you don’t have to change it now. For a more detailed walkthrough of these options, you can see this step of the LAMP installation tutorial.

To initialize the MySQL data directory, you would use mysql_install_db for versions before 5.7.6, and mysqld --initialize for 5.7.6 and later. However, if you installed MySQL from the Debian distribution, like in Step 1, the data directory was initialized automatically; you don’t have to do anything. If you try running the command anyway, you’ll see the following error:

Output
2016-03-07T20:11:15.998193Z 0 [ERROR] --initialize specified but the data directory has files in it. Aborting.

Finally, let’s test the MySQL installation.

Step 3 — Testing MySQL

Regardless of how you installed it, MySQL should have started running automatically. To test this, check its status.

  1. systemctl status mysql.service

You’ll see output similar to the following:

Output
● mysql.service - MySQL Community Server
   Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: en
   Active: active (running) since Wed 2016-11-23 21:21:25 UTC; 30min ago
 Main PID: 3754 (mysqld)
    Tasks: 28
   Memory: 142.3M
      CPU: 1.994s
   CGroup: /system.slice/mysql.service
           └─3754 /usr/sbin/mysqld

If MySQL isn’t running, you can start it with sudo systemctl start mysql.

For an additional check, you can try connecting to the database using the mysqladmin tool, which is a client that lets you run administrative commands. For example, this command says to connect to MySQL as root (-u root), prompt for a password (-p), and return the version.

  1. mysqladmin -p -u root version

You should see output similar to this:

Output
mysqladmin  Ver 8.42 Distrib 5.7.16, for Linux on x86_64
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Server version		5.7.16-0ubuntu0.16.04.1
Protocol version	10
Connection		Localhost via UNIX socket
UNIX socket		/var/run/mysqld/mysqld.sock
Uptime:			30 min 54 sec

Threads: 1  Questions: 12  Slow queries: 0  Opens: 115  Flush tables: 1  Open tables: 34  Queries per second avg: 0.006

This means MySQL is up and running.

Conclusion

You now have a basic MySQL setup installed on your server. Here are a few examples of next steps you can take:


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About the authors
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senior technical writer

hi! i write do.co/docs now, but i used to be the senior tech editor publishing tutorials here in the community.

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10 Comments

I get this error 100% of the time, I have purged/wiped/cleaned and re-installed about 50 times. Every single time i get the same thing.

Can anyone help??

Renaming removed key_buffer and myisam-recover options (if present) dpkg: error processing package mysql-server-5.7 (–configure): installed mysql-server-5.7 package post-installation script subprocess returned error exit status 1 dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.7; however: Package mysql-server-5.7 is not configured yet.

dpkg: error processing package mysql-server (–configure): dependency problems - leaving unconfigured Processing triggers for libc-bin (2.27-3ubuntu1) …No apport report written because the error message indicates its a followup error from a previous failure.

Processing triggers for ureadahead (0.100.0-20) … Processing triggers for systemd (237-3ubuntu10.15) … Errors were encountered while processing: mysql-server-5.7 mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1)

I haven’t had to mess with the swap file to get mysql to install, as a couple of others have commented. Must thank my lucky stars. :-)

Thanks for taking the time to explain the differences in initializing mysql_install_db between the 5.6 and 5.7 versions of mysql. I find this level of attention of detail in most D.O tutorials and is the reason why I respect them so much.

This worked for me.

https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04

(use dd if=/dev/zero of=/swapfile bs=1M count=1024 if you have cheap plan, and don’t forget to purge and remove certain files as mentioned)

This worked for me.

https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-14-04

(use dd if=/dev/zero of=/swapfile bs=1M count=1024 if you have cheap plan, and don’t forget to purge and remove certain files as mentioned)

Hey, There was no prompt for root password as mentioned in Step 1 :/(

If it occurs error because of broken MySQL package on Ubuntu 16.04. Just do this trick

# Purge all MySQL packages
sudo apt purge mysql*
sudo rm -rf /var/lib/mysql
sudo rm -rf /etc/mysql

# Reinstall MySQL
sudo apt install mysql-server mysql-client

If it occurs error because of broken MySQL package on Ubuntu 16.04. Just do this trick

# Purge all MySQL packages
sudo apt purge mysql*
sudo rm -rf /var/lib/mysql
sudo rm -rf /etc/mysql

# Reinstall MySQL
sudo apt install mysql-server mysql-client

If it occurs error because of broken MySQL package on Ubuntu 16.04. Just do this trick

# Purge all MySQL packages
sudo apt purge mysql*
sudo rm -rf /var/lib/mysql
sudo rm -rf /etc/mysql

# Reinstall MySQL
sudo apt install mysql-server mysql-client

If it occurs error because of broken MySQL package on Ubuntu 16.04. Just do this trick

# Purge all MySQL packages
sudo apt purge mysql*
sudo rm -rf /var/lib/mysql
sudo rm -rf /etc/mysql

# Reinstall MySQL
sudo apt install mysql-server mysql-client

If it occurs error because of broken MySQL package on Ubuntu 16.04. Just do this trick

# Purge all MySQL packages
sudo apt purge mysql*
sudo rm -rf /var/lib/mysql
sudo rm -rf /etc/mysql

# Reinstall MySQL
sudo apt install mysql-server mysql-client