一、机器准备
机器
| 主机名 | ip地址 | 角色 | 软件 |
| mic-master | 192.168.252.148 | 主节点 | mysql8.0.23 mysql-shell-8.0.23 |
| mic-node1 | 192.168.252.142 | node1 | mysql8.0.23 |
| mic-node2 | 192.168.252.145 | node2 | mysql8.0.23 |
关闭防火墙
systemctl stop firewalld
setenforce 0二、环境准备
安装mysql8.0.23
官方地址：MySQL :: Begin Your Download
三台机器均安装
1.安装工具
yum -y install perl-JSON perl-Test-Simple
2.获取安装包
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-server-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-client-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-client-plugins-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-devel-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-common-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-libs-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-libs-compat-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-embedded-compat-8.0.23-1.el7.x86_64.rpm
wget https://downloads.mysql.com/archives/get/p/23/file/mysql-community-test-8.0.23-1.el7.x86_64.rpm
3.安装
rpm -ivh mysql-community-common-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-plugins-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-embedded-compat-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-8.0.23-1.el7.x86_64.rpm
rpm -ivh mysql-community-test-8.0.23-1.el7.x86_64.rpm修改配置文件
所有节点修改进行修改配置文件
添加配置的模版
server_id=[id] #每一台的都不一样，要唯一
report_host=[当前服务器ip]
report_port=[mysql端口号]
loose-group_replication_ip_whitelist="[ip1],[ip2],[ip3]"进行修改
vim /etc/my.cnf192.168.252.148：
server-id=1
report_host=192.168.252.148
report_port=3306
loose-group_replication_ip_whitelist="192.168.252.148,192.168.252.142,192.168.252.145"
192.168.252.142：
server-id=2
report_host=192.168.252.142
report_port=3306
loose-group_replication_ip_whitelist="192.168.252.148,192.168.252.142,192.168.252.145"
192.168.252.145：
server-id=3
report_host=192.168.252.145
report_port=3306
loose-group_replication_ip_whitelist="192.168.252.148,192.168.252.142,192.168.252.145"
启动并修改密码
systemctl start mysqld192.168.252.148：
cat /var/log/mysqld.log | grep "password"
mysqladmin -uroot -p'Cu)ghjzfK3_J' password @Syh2025659
192.168.252.142：
cat /var/log/mysqld.log | grep "password"
mysqladmin -uroot -p'*qywTIZHh8-j' password '@Syh2025659'
192.168.252.145：
cat /var/log/mysqld.log | grep "password"
mysqladmin -uroot -p'Z+Ly31m>Y#sy' password '@Syh2025659'
主服务器安装mysql-shell-8.0.23
下载链接：https://downloads.mysql.com/archives/get/p/43/file/mysql-shell-8.0.23-linux-glibc2.12-x86-64bit.tar.gz
wget https://downloads.mysql.com/archives/get/p/43/file/mysql-shell-8.0.23-linux-glibc2.12-x86-64bit.tar.gz
解压：
tar -xzf mysql-shell-8.0.23-linux-glibc2.12-x86-64bit.tar.gz -C /usr/local/
cd /usr/local
mv mysql-shell-8.0.23-linux-glibc2.12-x86-64bi mysql-shell三、终端操作
MySQL操作
创建用户并授权
三台机器均添加
1.创建用户
create user syh identified by '@Syh2025659';
2.授权给用户
GRANT BACKUP_ADMIN, CLONE_ADMIN, CREATE USER, EXECUTE, FILE, PERSIST_RO_VARIABLES_ADMIN, PROCESS, RELOAD, REPLICATION CLIENT, REPLICATION SLAVE, SELECT, SHUTDOWN, SUPER, SYSTEM_VARIABLES_ADMIN ON *.* TO 'syh'@'%' WITH GRANT OPTION;
GRANT DELETE, INSERT, UPDATE ON mysql.* TO 'syh'@'%' WITH GRANT OPTION;
GRANT ALTER, ALTER ROUTINE, CREATE, CREATE ROUTINE, CREATE TEMPORARY TABLES, CREATE VIEW, DELETE, DROP, EVENT, EXECUTE, INDEX, INSERT, LOCK TABLES, REFERENCES, SHOW VIEW, TRIGGER, UPDATE ON mysql_innodb_cluster_metadata.* TO 'syh'@'%' WITH GRANT OPTION;
GRANT ALTER, ALTER ROUTINE, CREATE, CREATE ROUTINE, CREATE TEMPORARY TABLES, CREATE VIEW, DELETE, DROP, EVENT, EXECUTE, INDEX, INSERT, LOCK TABLES, REFERENCES, SHOW VIEW, TRIGGER, UPDATE ON mysql_innodb_cluster_metadata_bkp.* TO 'syh'@'%' WITH GRANT OPTION;
GRANT ALTER, ALTER ROUTINE, CREATE, CREATE ROUTINE, CREATE TEMPORARY TABLES, CREATE VIEW, DELETE, DROP, EVENT, EXECUTE, INDEX, INSERT, LOCK TABLES, REFERENCES, SHOW VIEW, TRIGGER, UPDATE ON mysql_innodb_cluster_metadata_previous.* TO 'syh'@'%' WITH GRANT OPTION;
GRANT ALL ON *.* to 'syh'@'%';
GRANT ALL PRIVILEGES on *.* to 'syh'@'%' WITH GRANT OPTION;
3.刷新权限
FLUSH PRIVILEGES;192.168.252.148:
192.168.252.142:
192.168.252.145:
MySQL-Shell操作
进入mysql-shell
/usr/local/mysql-shell/bin/mysqlsh #启动
连接主库信息
\c syh@192.168.252.148:3306 
配置集群
dba.configureInstance('syh@192.168.252.148:3306');
dba.configureInstance('syh@192.168.252.142:3306');
dba.configureInstance('syh@192.168.252.145:3306');
创建一个集群
var cluster=dba.createCluster('mysqlcluster');
查看主机群状态
dba.getCluster().status()
添加两个从节点
var cluster=dba.getCluster();
cluster.addInstance('syh@192.168.252.142:3306');
cluster.addInstance('syh@192.168.252.145:3306');
查看节点
cluster.status();
