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Dec 17, 2018
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[Update] Configure Master-Master MySQL Database Replication #2047

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f9c7742
Updated for Ubuntu 18.04 and Debian 9
andystevensname Sep 28, 2018
ec51119
Fixed indentations
andystevensname Sep 28, 2018
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copy tech
Oct 1, 2018
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travis
Oct 1, 2018
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Update index.md
Guaris Dec 17, 2018
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22 changes: 14 additions & 8 deletions docs/databases/mysql/configure-master-master-mysql-database-replication/index.md
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Expand Up @@ -7,7 +7,7 @@ og_description: 'MySQL Master-Master replication adds speed and redundancy. With
keywords: ["set up mysql", "replication", "master-master", "high availability"]
license: '[CC BY-ND 4.0](https://creativecommons.org/licenses/by-nd/4.0)'
aliases: ['databases/mysql/backup-options/', 'databases/mysql/mysql-master-master/', 'databases/mysql/mysql-master-master-replication/']
modified: 2017-10-10
modified: 2018-12-18
modified_by:
name: Linode
published: 2014-12-24
Expand All @@ -25,16 +25,20 @@ MySQL Master-Master replication adds speed and redundancy for active websites. W
{{< note >}}
This guide is written for a non-root user. Commands that require elevated privileges are prefixed with `sudo`. If you're not familiar with the `sudo` command, you can check our [Users and Groups](/docs/tools-reference/linux-users-and-groups) guide.

This guide is written for Debian 7 or Ubuntu 14.04.
This guide is written for Debian 9 or Ubuntu 18.04.
{{< /note >}}

## Install MySQL

Use the following commands to install MySQL on each of the Linodes:
1. Use the following commands to install MySQL on each of the Linodes:

sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get install mysql-server mysql-client
sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get install mysql-server mysql-client

2. Run the MySQL secure installation command. You will be asked to create a root password. It is recommended you select yes to all of the questions:

mysql_secure_installation

## Edit MySQL's Configuration

Expand All @@ -43,6 +47,7 @@ Use the following commands to install MySQL on each of the Linodes:
**Server 1:**

{{< file "/etc/mysql/my.cnf" >}}
[mysqld]
server_id = 1
log_bin = /var/log/mysql/mysql-bin.log
log_bin_index = /var/log/mysql/mysql-bin.log.index
Expand All @@ -60,6 +65,7 @@ auto-increment-offset = 1
**Server 2:**

{{< file "/etc/mysql/my.cnf" >}}
[mysqld]
server_id = 2
log_bin = /var/log/mysql/mysql-bin.log
log_bin_index = /var/log/mysql/mysql-bin.log.index
Expand All @@ -74,7 +80,7 @@ auto-increment-offset = 2
{{< /file >}}


2. For each of the Linodes, edit the `bind-address` configuration in order to use the private IP addresses:
2. Edit the `bind-address` configuration in order to use the private IP addresses, for each of the Linodes.

{{< file "/etc/mysql/my.cnf" >}}
bind-address = x.x.x.x
Expand All @@ -84,7 +90,7 @@ bind-address = x.x.x.x

3. Once completed, restart the MySQL application:

sudo service mysql restart
sudo systemctl restart mysql

## Create Replication Users

Expand Down