MySQL9.1.0实现GTID模式的项目实践
作者:妍妍的宝贝
本文主要介绍了在MySQL 9.1.0中实现GTID模式的主从复制,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧
本章节实现MySQL主从复制GTID模式
主机 | IP地址 | 端口 |
---|---|---|
mysql-master | 192.168.239.100 | 3306 |
mysql-slave1 | 192.168.239.110 | 3306 |
mysql-slave2 | 192.168.239.120 | 3306 |
1 实验准备工作
1.1 下载并安装官方MySQL的rpm包
[root@master mysql_rpm]# yum localinstall mysql-community-server-9.1.0-1.el7.x86_64.rpm \ mysql-community-common-9.1.0-1.el7.x86_64.rpm \ mysql-community-client-9.1.0-1.el7.x86_64.rpm \ mysql-community-icu-data-files-9.1.0-1.el7.x86_64.rpm \ mysql-community-libs-9.1.0-1.el7.x86_64.rpm \ mysql-community-client-plugins-9.1.0-1.el7.x86_64.rpm
1.2 设置DNS解析
[root@master ~]# cat >> /etc/hosts <<EOF > 192.168.239.100 master > 192.168.239.110 slave1 > 192.168.239.120 slave2 > EOF [root@slave1 ~]# cat >> /etc/hosts <<EOF > 192.168.239.100 master > 192.168.239.110 slave1 > 192.168.239.120 slave2 > EOF [root@slave2 ~]# cat >> /etc/hosts <<EOF > 192.168.239.100 master > 192.168.239.110 slave1 > 192.168.239.120 slave2 > EOF
1.3 修改密码
MASTER SLAVE1 SLAVE2 均是以下这样设置
# 改变密码策略 [root@master ~]# cat >> /etc/my.cnf <<EOF validate_password.policy=LOW validate_password.length=0 EOF # 启动MySQL服务 [root@master ~]# systemctl start mysqld [root@master ~]# grep password /var/log/mysqld.log 2024-12-14T14:29:20.406601Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: (:lt/hLIW4da [root@master ~]# mysql -uroot -p'(:lt/hLIW4da' # 修改数据库密码 mysql> alter user 'root'@'localhost' identified by '123456'; mysql> flush privileges;
2 GTID模式实现主从复制
2.1 增加配置文件内容
[root@master ~]# cat >> /etc/my.cnf <<EOF log_bin=mysql-bin symbolic-links=0 # 禁用符号链接 server_id=10 # 设置serverID 为机器的标识符 log_bin=mysql-bin # 开启 log_bin 日志 # 开启GTID的前提 gtid_mode=ON enforce-gtid-consistency=ON EOF [root@slave1 ~]# cat >> /etc/my.cnf <<EOF log_bin=mysql-bin symbolic-links=0 # 禁用符号链接 server_id=20 # 设置serverID 为机器的标识符 # 开启GTID的前提 gtid_mode=ON enforce-gtid-consistency=ON EOF [root@slave2 ~]# cat >> /etc/my.cnf <<EOF log_bin=mysql-bin symbolic-links=0 # 禁用符号链接 server_id=30 # 设置serverID 为机器的标识符 # 开启GTID的前提 gtid_mode=ON enforce-gtid-consistency=ON EOF # 重启 MySQL 服务重新加载 [root@master ~]# systemctl restart mysqld [root@slave1 ~]# systemctl restart mysqld [root@slave2 ~]# systemctl restart mysqld
2.2 创建主从复制账号
MASTER
mysql> set sql_log_bin=0; # 关闭二进制SQL日志写入 Query OK, 0 rows affected (0.00 sec) mysql> show variables like 'sql_log_bin'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | sql_log_bin | OFF | +---------------+-------+ mysql> CREATE USER 'repl'@'%' IDENTIFIED BY '123456'; # 赋予所有库所有表 repl 用户 REPLICATION SLAVE 的权限 mysql> GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%'; mysql> FLUSH PRIVILEGES; mysql> set sql_log_bin=1;
SLAVE1
mysql> set sql_log_bin=0; Query OK, 0 rows affected (0.00 sec) mysql> show variables like 'sql_log_bin'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | sql_log_bin | OFF | +---------------+-------+ mysql> CREATE USER 'repl'@'%' IDENTIFIED BY '123456'; mysql> FLUSH PRIVILEGES; mysql> set sql_log_bin=1;
SLAVE2
mysql> set sql_log_bin=0; Query OK, 0 rows affected (0.00 sec) mysql> show variables like 'sql_log_bin'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | sql_log_bin | OFF | +---------------+-------+ mysql> CREATE USER 'repl'@'%' IDENTIFIED BY '123456'; mysql> FLUSH PRIVILEGES; mysql> set sql_log_bin=1;
2.3 实现GTID的自动定位
SLAVE1 && SLAVE2
mysql> SET SQL_LOG_BIN=0; # 关闭语句记录 # 指定主服务器的IP端口以及授权过的用户repl,并开启自动定位 mysql> CHANGE REPLICATION SOURCE TO SOURCE_HOST='192.168.239.100', SOURCE_PORT=3306, SOURCE_USER='repl', SOURCE_PASSWORD='123456', GET_SOURCE_PUBLIC_KEY=1, # 信任证书 SOURCE_AUTO_POSITION=1; # 开启自动定位功能 mysql> START REPLICA; # 假如说失败需要执行 STOP REPLICA; 停止复制 # 之后再执行 RESET REPLICA; 删除配置的语句 # 查看连接 master 是否正常 mysql> SHOW REPLICA STATUS\G *************************** 1. row *************************** Replica_IO_State: Waiting for source to send event Source_Host: 192.168.239.100 Source_User: repl Source_Port: 3306 Connect_Retry: 60 Source_Log_File: mysql-bin.000001 Read_Source_Log_Pos: 158 Relay_Log_File: slave2-relay-bin.000002 Relay_Log_Pos: 375 Relay_Source_Log_File: mysql-bin.000001 Replica_IO_Running: Yes # IO表示链接网络没有问题 Replica_SQL_Running: Yes # SQL表示本地同步没有问题,如有问题基本上就是配置文件的问题 mysql> SET SQL_LOG_BIN=0; # 开启语句记录
3 导入数据查看是否成功
3.1 主服务器导入SQL脚本
[root@master ~]# mysql -uroot -p123456 mysql> create database gtid; Query OK, 1 row affected (0.00 sec) mysql> use gtid Database changed mysql> source gtid.sql; Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) mysql> show tables; +----------------------------------------+ | Tables_in_gtid | +----------------------------------------+ | aaa | | abi_http_log | | act_app_appdef | | act_app_databasechangelog | | act_app_databasechangeloglock | +----------------------------------------+
3.2 两个从服务器查看是否复制同步
[root@ slave1 && slave2]# mysql -uroot -p123456 mysql> show databases; +--------------------+ | Database | +--------------------+ | gtid | | information_schema | | mysql | | performance_schema | | sys | +--------------------+ 5 rows in set (0.01 sec) mysql> use gtid Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables +----------------------------------------+ | Tables_in_gtid | +----------------------------------------+ | aaa | | abi_http_log | | act_app_appdef | | act_app_databasechangelog | | act_app_databasechangeloglock | +----------------------------------------+
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