【环境部署】centos7安装mysql-5.7.19 group-replication

--mysql高可用官方文档：

https://dev.mysql.com/doc/refman/5.7/en/group-replication.html

mysql下载地址：

https://www.mysql.com/downloads/  ：下载这个：MySQL Community Server (GPL) 5.7.19版本

 

--安装参考链接:

#mysql 组复制的原理介绍：

http://blog.itpub.net/29510932/viewspace-2055679/

#mysql group-replication安装部署介绍

http://blog.csdn.net/yuanlin65/article/details/53782020

 

安装拓扑图：

172.27.129.2 mysql-ha-s1

172.27.129.3 mysql-ha-s2

172.27.129.4 mysql-ha-s3

 

安装用户：work

安装位置：/mnt/disk01

 

#mysql-ha-s1安装

 

--安装前准备

#创建work用户

groupadd work

useradd -g work work

 

#设置hostname以及hosts

hostnamectl set-hostname mysql-ha-s1

 

#在/etc/hosts里面添加三台机器的host解析

172.27.129.2 mysql-ha-s1

172.27.129.3 mysql-ha-s2

172.27.129.4 mysql-ha-s3

 

#关闭服务器防火墙与selinux

#关闭防火墙

systemctl stop firewalld.service

systemctl disable firewalld.service

firewall-cmd --state

 

#关闭selinux

/usr/sbin/sestatus -v

setenforce 0

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config

 

#设置/mnt/disk01权限

chmod 777 /mnt/disk01

 

#开始安装进程

#进入work用户

su - work

tar -zxvf /home/work/mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz

mv /home/work/mysql-5.7.19-linux-glibc2.12-x86_64 /home/work/mysql-5.7.19

 

#安装数据库-配置文件与数据分开存储

/home/work/mysql-5.7.19/bin/mysqld --no-defaults --initialize --explicit_defaults_for_timestamp --basedir=/mnt/disk01/mysql/ --datadir=/mnt/disk01/data

 

注：请记录安装提示中的初始密码，例如：root@localhost: sdk>cO;Rq3B+

 

#mysql配置文件内容：

---

[mysqld]

# server configuration

datadir=/mnt/disk01/data

basedir=/mnt/disk01/mysql

#set plugin local value

plugin_dir=/home/work/mysql-5.7.19/lib/plugin

port=24801

socket=/tmp/mysql.sock

 

# base config

server_id=1

gtid_mode=ON

user=mysql

enforce_gtid_consistency=ON

master_info_repository=TABLE

relay_log_info_repository=TABLE

binlog_checksum=NONE

log_slave_updates=ON

log_bin=binlog

binlog_format=ROW

 

# group replication

transaction_write_set_extraction=XXHASH64

loose-group_replication_group_name="aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"

loose-group_replication_start_on_boot=off

loose-group_replication_local_address= "172.27.129.2:24901"

loose-group_replication_group_seeds= "172.27.129.2:24901,172.27.129.3:24901,172.27.129.4:24901"

loose-group_replication_bootstrap_group= off

 

# open mutil_mode config

loose-group_replication_single_primary_mode=FALSE

loose-group_replication_enforce_update_everywhere_checks= TRUE

---

#创建配置文件

touch /mnt/disk01/mysql/my.cnf

将以上配置写入配置文件。

 

#配置mysql环境变量

vi ~/.bash_profile

在“export PATH”上一行增加如下内容：

PATH=$PATH:/home/work/mysql-5.7.19/bin

 

使配置文件生效：source ~/.bash_profile

 

#启动mysql数据库

/home/work/mysql-5.7.19/bin/mysqld --defaults-file=/mnt/disk01/mysql/my.cnf &

 

#非交互式修改初始密码

/home/work/mysql-5.7.19/bin/mysqladmin -S /tmp/mysql.sock -u root -p'sdk>cO;Rq3B+' password ‘your passwd’

 

#登录数据库：

mysql -uroot -p'your passwd’

 

#初始化与安装启动group-replication

---

SET SQL_LOG_BIN=0;

CREATE USER rpl_user@'%';

GRANT REPLICATION SLAVE ON *.* TO rpl_user@'%' IDENTIFIED BY 'rpl_pass';

FLUSH PRIVILEGES;

SET SQL_LOG_BIN=1;

CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_pass' FOR CHANNEL 'group_replication_recovery';

INSTALL PLUGIN group_replication SONAME 'group_replication.so';

SET GLOBAL group_replication_bootstrap_group=ON;

START GROUP_REPLICATION;

SET GLOBAL group_replication_bootstrap_group=OFF;

---

#查询启动状态

SELECT * FROM performance_schema.replication_group_members;

 

#安装完毕

 

 #mysql-ha-s2和mysql-ha-s3安装

 

注：全程参照s1安装，有以下几点存在改变。

 

1、注意my.cnf的server_id 顺延变为2和3

2、注意my.cnf的loose-group_replication_local_address顺延

3、mysql初始化与启动脚本按照如下操作：

---

SET SQL_LOG_BIN=0;

CREATE USER rpl_user@'%';

GRANT REPLICATION SLAVE ON *.* TO rpl_user@'%' IDENTIFIED BY 'rpl_pass';

FLUSH PRIVILEGES;

SET SQL_LOG_BIN=1;

CHANGE MASTER TO MASTER_USER='rpl_user', MASTER_PASSWORD='rpl_pass' FOR CHANNEL 'group_replication_recovery';

INSTALL PLUGIN group_replication SONAME 'group_replication.so';

set global group_replication_allow_local_disjoint_gtids_join=ON;

START GROUP_REPLICATION;

---

 

其他没有区别。

安装完成，进行测试即可。