http://www.dbhelp.net/2017/01/06/pxc-5-7-14-%E5%AE%89%E8%A3%85%E9%83%A8%E7%BD%B2-pxc-install.html
PXC是Percona XtraDB Cluster的缩写，是一种具有高可用性和高扩展性的MySQL开源集群。它集成了Percona Server和Percona XtraBackup，同时采用了Codership Galera库。
常见的PXC架构如下，
PXC架构
下面，开始安装PXC 5.7.14
一、环境说明
主机
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# PXC #
pxc1
pxc2
pxc3
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OS : CentOS release 6.5 (Final)
二、安装 Percona-XtraDB-Cluster
1、卸载CentOS 自带的mysql-libs包
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nodeps
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2、所有节点安装依赖包
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3.el6.x86_64.rpm
1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
1.el6.x86_64.rpm
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所有节点安装软件包的步骤
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HiRes
nc
3.el6.x86_64.rpm
1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
26.17.1.el6.x86_64.rpm
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3、所有节点创建mysql组和用户
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# groupadd mysql
# useradd -r -g mysql -s /bin/false mysql
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4、创建相关目录
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# mkdir /data/mysql/{data,logs,tmp} -p
# chown mysql.mysql /data/ -R
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5、配置my.cnf文件
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'my-default.cnf'
cnf
cnf
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拷贝到/etc/my.cnf
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cnf
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编辑my.cnf
@第一节点 pxc1
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]
mysql
1024M
data
3306
3306111
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pid
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log
0.1
STRICT_TRANS_TABLES
## pxc variables ##
# Path to Galera library
so
# Cluster connection URL contains the IPs of node#1, node#2 and node#3
//10.9.15.111,10.9.15.112,10.9.15.113
# In order for Galera to work correctly binlog format should be ROW
ROW
# MyISAM storage engine has only experimental support
InnoDB
# This InnoDB autoincrement locking mode is a requirement for Galera
2
# Node name
pxc1
# Node 1 address
10.9.15.111
# SST method
v2
# Cluster name
test
# Authentication for SST method
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@第二节点 pxc2
注意修改 server_id 、wsrep_node_name 、 wsrep_node_address
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]
mysql
1024M
data
3306
3306112
sock
pid
log
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log
0.1
STRICT_TRANS_TABLES
## pxc variables ##
# Path to Galera library
so
# Cluster connection URL contains the IPs of node#1, node#2 and node#3
//10.9.15.111,10.9.15.112,10.9.15.113
# In order for Galera to work correctly binlog format should be ROW
ROW
# MyISAM storage engine has only experimental support
InnoDB
# This InnoDB autoincrement locking mode is a requirement for Galera
2
# Node name
pxc2
# Node 1 address
10.9.15.112
# SST method
v2
# Cluster name
test
# Authentication for SST method
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@第三节点 pxc3
注意修改 server_id 、wsrep_node_name 、 wsrep_node_address
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]
mysql
1024M
data
3306
3306113
sock
pid
log
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log
0.1
STRICT_TRANS_TABLES
## pxc variables ##
# Path to Galera library
so
# Cluster connection URL contains the IPs of node#1, node#2 and node#3
//10.9.15.111,10.9.15.112,10.9.15.113
# In order for Galera to work correctly binlog format should be ROW
ROW
# MyISAM storage engine has only experimental support
InnoDB
# This InnoDB autoincrement locking mode is a requirement for Galera
2
# Node name
pxc3
# Node 1 address
10.9.15.113
# SST method
v2
# Cluster name
test
# Authentication for SST method
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三、启动PXC
1、启动第一节点
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# /etc/init.d/mysql bootstrap-pxc
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查看进程是否启动
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# ps -ef|grep mysql
cluster
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查看错误日志信息
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%
,
,
c622a8ebb29a
]
)
.
)
# 1: Primary, number of nodes: 1, my index: 0, protocol version 3
0
available
builtins
mutexes
barrier
1.2.3
AIO
1
instructions
128M
pool
.
_doublewrite
.
bytes
tables
.
.
.
.
start
//www.percona.com) 5.7.14-8 started; log sequence number 2491156
_pool
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37
.
.
.
.
3306
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;
.
events
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17
2
.
)
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3
.
connections
.
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去error.log日志搜索关键字password找到默认root密码，登录后修改
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第一节点启动后，检查cluster的状态。
当前第一节点是Primary。
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第一节点创建后，其他节点初始化，需要使用xtrabackup工具来备份，然后恢复。
所以，需要创建一个用户用于备份。
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# 注意，官方文档中少了 PROCESS 权限
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验证sstuser登录
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# mysql -usstuser -psstuser -S /data/mysql/mysql.sock -e 'show databases'
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启动第二节点
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# /etc/init.d/mysql start
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确认第二节点的状态
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启动第三节点
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# /etc/init.d/mysql start
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确定状态
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至此，PXC安装启动完毕。