centos6安装pxc

Percona XtraDB Cluster是一种高可用性解决方案，可帮助企业避免停机和中断.

Percona XtraDB Cluster具有以下MySQL群集优势：
·具有成本效益的HA和MySQL可扩展性
·更高的可用性
·ProxySQL负载平衡器
·多原版复制
·增强的读/写可扩展性
·零数据丢失
·ProxySQL辅助的Percona XtraDB群集维护模式
·自动节点配置
·Percona XtraDB群集“严格模式”
·Percona监视和管理兼容性

环境：三台centos7
192.168.1.10
192.168.1.20
192.168.1.30

1.安装percona软件包库
yum -y install http://www.percona.com/downloads/percona-release/redhat/0.1-4/percona-release-0.1-4.noarch.rpm

2.更新库
ls /etc/yum.repos.d/
yum clean all
yum list | grep percona

3.安装pxc
yum install Percona-XtraDB-Cluster-full-57.x86_64 -y

4.启动mysql
service mysql start
grep password /var/log/mysqld.log
mysql -u root -p
alter user 'root'@'localhost' identified by 'Redhat.123';
create user 'testuser'@'localhost' identified by 'passw0rd';
grant reload,lock tables,process,replication client on . to 'sstuser'@'localhost';
flush privileges;

5.修改mysql配置文件
service mysql stop
vim /etc/my.cnf
wsrep_provider=/usr/lib64/galera3/libgalera_smm.so
wsrep_cluster_name=pxc-cluster
wsrep_cluster_address=gcomm://192.168.1.10,192.168.1.20,192.168.1.30
wsrep_node_name=pxc1
wsrep_node_address=192.168.1.10
wsrep_sst_method=xtrabackup-v2
wsrep_sst_auth=sstuser:passw0rd
pxc_strict_mode=ENFORCING
binlog_format=ROW
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2

6.在node2,node3上面做同样操作，并修改配置文件。
wsrep_node_name=pxc2
wsrep_node_address=192.168.1.20
wsrep_node_name=pxc3
wsrep_node_address=192.168.1.30