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mysql active active cluster with pacemaker


# INSTALLATION

[root@host1]# yum -y install corosync pcs pacemaker

[root@host2]# yum -y install corosync pcs pacemaker


# INSTALL MARIADB AND CREATE DEFAULT DIRECTORY

[root@host1]# yum -y install mariadb-server; systemctl start mariadb; \
systemctl stop mariadb

[root@host2]# yum -y install mariadb-server; systemctl start mariadb; \
systemctl stop mariadb


# START PCSD

[root@host1]# systemctl start pcsd

[root@host2]# systemctl start pcsd


# SET PASSWORD

[root@host1]# passwd hacluster

[root@host2]# passwd hacluster

[root@host1]# pcs cluster auth host1 host2


# START CLUSTER

[root@host1]# pcs cluster setup --name cluster_mysql host1 host2

[root@host1]# systemctl start pacemaker; systemctl start corosync

[root@host2]# systemctl start pacemaker; systemctl start corosync

[root@host1]# pcs cluster start --all


# Disable STONITH

[root@host1]# pcs property set stonith-enabled=false

[root@host1]# pcs property set no-quorum-policy=ignore


# CONFIGURE CLUSTER
  
[root@host1]# pcs resource create virtual_ip ocf:heartbeat:IPaddr2 \
ip=10.88.1.101 cidr_netmask=32 op monitor interval=30s on-fail=restart

[root@host1]# pcs resource create mysql ocf:heartbeat:mysql  \
binary="/usr/bin/mysqld_safe"   config="/etc/my.cnf" \
  datadir="/var/lib/mysql"   pid="/var/lib/mysql/mysql.pid" \
  socket="/var/lib/mysql/mysql.sock"  \
 additional_parameters="--bind-address=0.0.0.0"   op start timeout=60s \
  op stop timeout=60s   op monitor interval=20s timeout=30s \
on-fail=standby

[root@host1]# pcs resource clone mysql clone-max=2 clone-node-max=1


# SET AUTOSTART

[root@host1]# systemctl enable pcsd; systemctl enable corosync; \
systemctl enable pacemaker

[root@host2]# systemctl enable pcsd; systemctl enable corosync; \
systemctl enable pacemaker

# YOU SHOULD CONFIGURE MASTER MASTER REPLICATION BETWEEN 2 MYSQL SERVERS

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