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Install MySQL 5.6 in Ubuntu 16.04

Ubuntu 16.04 only provides packages for MySQL 5.7 which has a range of backwards compatibility issues with code written against older MySQL versions.

Oracle maintains a list of official APT repositories for MySQL 5.6, but those repositories do not yet support Ubuntu 16.04. However, the 15.10 repos will work for 16.04.

I would not recommend to do this in production environment, but on a development machine, follow these steps:

  • Dump your databases, if you want to keep them. Keeping the data directory itself did not work for me.
  • Uninstall everything related to MySQL 5.7 with

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    apt remove mysql-client mysql-server libmysqlclient-dev mysql-common

    Check if you removed everything using

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    dpkg -l | grep mysql

    Purge remainders (e.g. marked with rc) with dpkg -P <package> [<package> ...].

  • Download the apt_config-debian package from Oracle and install it using

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    dpkg -i mysql-apt-config_0.7.2-1_all.deb

    Choose "MySQL 5.6" and "Ubuntu Wily" (assuming Xenial is not yet provided)

  • Run

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    apt-cache policy mysql-server

    If this shows a 5.6 version, continue.

    If not, check your /etc/apt/sources.list.d/mysql.list. It should look roughly like this:

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    ### THIS FILE IS AUTOMATICALLY CONFIGURED ### # You may comment out entries below, but any other modifications may be lost. # Use command 'dpkg-reconfigure mysql-apt-config' as root for modifications. deb http://repo.mysql.com/apt/ubuntu/ wily mysql-apt-config deb http://repo.mysql.com/apt/ubuntu/ wily mysql-5.6 deb http://repo.mysql.com/apt//ubuntu/ wily mysql-tools deb-src http://repo.mysql.com/apt/ubuntu/ wily mysql-5.6

    You might have to replace "xenial" with "wily". Although you are using 16.04 (codename Xenial), Oracle currently seems to only provide 5.6 in the repos for 14.04 (codename Wiley). But those sources work for 16.04, too.

  • Create a file /etc/apt/preferences.d/mysql with this content

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    Package: * Pin: origin "repo.mysql.com" Pin-Priority: 999
  • Run

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    apt update
  • Run

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    apt install mysql-client mysql-server libmysqlclient-dev

    You should get 5.6 versions.

In case you have installed and MySQL ruby gems (like mysql2), you will have to remove and reinstall them, since they have been linked to the old libraries. Note that gem pristine will not help.

By refactoring problematic code and creating automated tests, makandra can vastly improve the maintainability of your Rails application.

Author of this card:

Avatar
Tobias Kraze
Last edit:
about 1 year ago
by Emanuel De
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Posted by Tobias Kraze to makandropedia