(1) Environment introduction
galera官网:http://galeracluster.com/downloads/
# cat /etc/redhat-release
CentOS Linux release 7.3.1611 (Core)
(2) The following configurations are the same for all three servers
Turn off firewall and selinux
systemctl disable firewalld systemctl stop firewalld sed -ri '/SELINUX=/cSELINUX=disabled' /etc/selinux/config setenforce 0
Configure yum source
cat >>/etc/yum.repos.d/galera.repo<<EOF [galera1] name=galera1 baseurl=http://releases.galeracluster.com/mysql-wsrep-5.7/centos/7/x86_64/ gpgcheck=0 [galera2] name=galera2 baseurl=http://releases.galeracluster.com/galera-3/centos/7/x86_64/ gpgcheck=0 EOF
Install mysql and galera plugins
yum repolist yum list | egrep "wsrep|galera" yum -y install mysql-wsrep-server-5.7.x86_64 yum install galera-3.x86_64 -y
start mysqld
systemctl start mysqld systemctl enable mysqld newpass=$(grep "temporary password" /var/log/mysqld.log | awk '{print $NF}') mysqladmin -uroot -p"$newpass" password 'Redhat@123'
Create a user for data synchronization
mysql -uroot -pRedhat@123 -e "grant all on *.* to 'copy'@'192.168.1.%' identified by 'Copy@123'" mysql -uroot -pRedhat@123 -e "flush privileges;"
(3) Modify the configuration file: the three are different
node1:192.168.1.31
#vi /etc/my.cnf binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 bind-address=0.0.0.0 wsrep_on=ON wsrep_provider=/usr/lib64/galera-3/libgalera_smm.so wsrep_cluster_address="gcomm://" wsrep_cluster_name="Cluster" wsrep_node_address="192.168.1.31" wsrep_node_name="node1" wsrep_sst_auth=copy:Copy@123 wsrep_sst_method=rsync
重启mysqld服务器:systemctl restart mysqld 验证端口状态:ss -anltup | egrep "3306|4567"
View the status on the node1 node
node2:192.168.1.32
#vi /etc/my.cnf binlog_format=row default_storage_engine=InnoDB innodb_autoinc_lock_mode=2 bind-address=0.0.0.0 wsrep_on=ON wsrep_provider=/usr/lib64/galera-3/libgalera_smm.so wsrep_cluster_address="gcomm://192.168.1.31" wsrep_cluster_name="test" wsrep_node_address="192.168.1.31,192.168.1.32,192.168.1.33" wsrep_node_name="node2" wsrep_sst_auth=copy:Copy@123 wsrep_sst_method=rsync
重启mysqld服务器:systemctl restart mysqld 验证端口状态:ss -anltup | egrep "3306|4567"