PXC5.7的安装步骤

这篇文章主要介绍“PXC5.7的安装步骤”，在日常操作中，相信很多人在PXC5.7的安装步骤问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”PXC5.7的安装步骤”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

节点分配

需要的包

percona-xtrabackup-24-2.4.7-2.el6.x86_64.rpm

Percona-XtraDB-Cluster-5.7.18-rel15-29.20.1.Linux.x86_64.ssl101.tar.gz

安装epel源（所有节点）

centos6

 rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm

centos7

 rpm -ivh http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

安装依赖包

yum install perl-IO-Socket-SSL perl-DBD-MySQL perl-Time-HiRes socat nc -y

安装xtrabackup

wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.7/binary/redhat/6/x86_64/percona-xtrabackup-24-2.4.7-2.el6.x86_64.rpm

rpm -ivh percona-xtrabackup-24-2.4.7-2.el6.x86_64.rpm

数据库初始化

/usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql --datadir=/data/mysql/mysql3306/data  --user=mysql --initialize

修改mysqld_safe启动文件

#####具体需要替换的路径根据安装的包名称去mysqld_safe文件中查询#############

sed -i 's#/mnt/workspace/percona-xtradb-cluster-5.7-binary-tarball/label_exp/centos6-64/Percona-XtraDB-Cluster-5.7.18-29.20/346/usr/local/Percona-XtraDB-Cluster-5.7.18-rel15-29.20.1.Linux.x86_64.ssl101#/usr/local/mysql#g' /usr/local/mysql/bin/mysqld_safe

vi /usr/local/mysql/support-files/mysql.server

basedir=/usr/local/mysql

datadir=/data/mysql/mysql3306/data

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

chmod 755 /etc/init.d/mysql

添加PXC相关的参数

vi /etc/my.cnf

[mysqld]

...

#PXC

wsrep_provider=/usr/local/mysql/lib/libgalera_smm.so

wsrep_cluster_address=gcomm://192.168.137.201,192.168.137.202,192.168.137.203

wsrep_node_address=192.168.137.201

wsrep_slave_threads=2

innodb_autoinc_lock_mode=2

binlog_format = ROW

default_storage_engine=InnoDB

wsrep_cluster_name=pxc-jiangzq

wsrep_sst_auth=sst:jiangzq

wsrep_sst_method=xtrabackup-v2

检查环境

[root@c1 xtrabackup]# /etc/init.d/mysql --help

Usage: mysql {start|stop|restart|restart-bootstrap|reload|force-reload|status|bootstrap-pxc}  [ MySQL (Percona XtraDB Cluster) options ]

启动第一个节点

shell>/etc/init.d/mysql bootstrap-pxc

/usr/local/mysql/bin/mysqld_safe --defaults-file=/etc/my.cnf  bootstrap-pxc &

/usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf bootstrap-pxc

修改root密码和添加sst账户

alter user user() identified by 'root';

create user 'sst'@'localhost' identified by 'jiangz';

grant all  on *.* to 'sst'@'localhost';

将整个虚拟机再克隆两个

#####修改主机名

shell>hostname c2

shell>vi /etc/sysconfig/network

hostname=c2

#####修改ip地址

shell>vi /etc/sysconfig/network-script/ifcfg-eth0

shell>service network restart

#####修改mysql配置文件

shell>vi /etc/my.cnf

server-id=203306

pid-file = c2.pid

wsrep_node_address=192.168.137.202

第2、3个节点启动

shell>/etc/init.d/mysql

遇到的错误

 ##############启动第二个节点报的错误###############

2017-07-18T06:40:24.829678Z 0 [ERROR] WSREP: Failed to read 'ready ' from: wsrep_sst_xtrabackup-v2 --role 'joiner' --address '192.168.137.202' --datadir '/data/mysql/mysql3306/data/' --defaults-file '/etc/my.cnf' --defaults-group-suffix '' --parent '10520' --binlog '/data/mysql/mysql3306/logs/mysql-bin'

    Read: '(null)'

2017-07-18T06:40:24.829714Z 0 [ERROR] WSREP: Process completed with error: wsrep_sst_xtrabackup-v2 --role 'joiner' --address '192.168.137.202'

--datadir '/data/mysql/mysql3306/data/' --defaults-file '/etc/my.cnf' --defaults-group-suffix '' --parent '10520' --binlog '/data/mysql/mysql3306/logs/mysql-bin' :

2 (No such file or directory)

selinux 没关和xtrabackup版本太低

日常启动关闭

#/etc/init.d/mysql    stop

全部节点关闭后重启

第一个节点启动的节点（ 如果集群全部关闭，第一个起动也需要用这样的形式）

#/etc/init.d/mysql    bootstrap-pxc

其它节点

#/etc/init.d/mysql    start

备注：

如集群是不是所有的节点都关闭不用使#/etc/init.d/mysql    bootstrap-pxc 启动。都可以用

#/etc/init.d/mysql    start

启动。

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