Using ProxySQL to Access and Manage Percona XtraDB Cluster

Fri, 09 Dec 2016 10:00:54 +0700

We will use ProxySQL as a gateway to access our Percona XtraDB Cluster. ProxySQL is a high-performance SQL proxy. ProxySQL runs as a daemon watched by a monitoring process. The process monitors the daemon and restarts it in case of a crash to minimize downtime. The daemon accepts incoming traffic from MySQL clients and forwards it to backend MySQL servers.

Installing ProxySQL

Node configuration

Node	Host	IP
Node 1	db1	192.168.50.31
Node 2	db2	192.168.50.32
Node 3	db3	192.168.50.33
Node 4	proxysql	192.168.50.34

Prerequisites

Install CentOS 7

Build Percona XtraDB Cluster using Ansible

Tue, 06 Dec 2016 17:04:47 +0700

Percona XtraDB Cluster is a database clustering solution for MySQL. It ensures high availability, prevents downtime and data loss, and provides linear scalability for a growing environment. Here we will try to install Percona XtraDB Cluster on a three nodes cluster configuration with the help from Ansible configuration management.

Installing Percona XtraDB Cluster on Red Hat Enterprise Linux and CentOS 7

Node configuration

Node	Host	IP
Node 1	db1	192.168.50.31
Node 2	db2	192.168.50.32
Node 3	db3	192.168.50.33

Prerequisites

Install CentOS 7
Update CentOS 7
Open firewall for TCP ports 3306, 4444, 4567, 4568:

ansible -i hosts -bkKv db-cluster -m firewalld -a 'port=3306/tcp permanent=true
state=enabled immediate=yes'
ansible -i hosts -bkKv db-cluster -m firewalld -a 'port=4444/tcp permanent=true
state=enabled immediate=yes'
ansible -i hosts -bkKv db-cluster -m firewalld -a 'port=4567/tcp permanent=true
state=enabled immediate=yes'
ansible -i hosts -bkKv db-cluster -m firewalld -a 'port=4568/tcp permanent=true
state=enabled immediate=yes'

Disable or set SELinux to Permissive, set option below in /etc/selinux/config and /etc/sysconfig/selinux:

Percona on Pras' Labs

Using ProxySQL to Access and Manage Percona XtraDB Cluster

Installing ProxySQL

Node configuration

Prerequisites

Build Percona XtraDB Cluster using Ansible

Installing Percona XtraDB Cluster on Red Hat Enterprise Linux and CentOS 7

Node configuration

Prerequisites