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:

Building Linux Cluster for HPC using Ansible and SLURM

Mon, 07 Nov 2016 06:06:24 +0700

What is a Linux Cluster?

Linux cluster is a group of computers running Linux which is interconnected in a local network so they can communicate with each other. Linux cluster is often used in high performance computing to do complex calculation of scientific problems because they can share the calculation load across all computers in the cluster. One example of the technology used to share the calculation load to all computers in the cluster is MPI or Message Passing Interface. There are many implementations of MPI, for example OpenMPI, MPICH, and Intel MPI.

Ansible on Pras' Labs

Build Percona XtraDB Cluster using Ansible

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

Node configuration

Prerequisites

Building Linux Cluster for HPC using Ansible and SLURM

What is a Linux Cluster?