##### 1.yum安装数据库 ​ 下载mysql的yum仓库 ```shell [root@xingdian ~]# wget https://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpm ``` ​ 安装mysql的yum仓库 ```shell [root@xingdian ~]# rpm -ivh https://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpm ``` ​ 修改安装版本： ```shell 方法一：命令方式 [root@xingdian ~]# yum repolist all | grep mysql [root@xingdian ~]# yum -y install yum-utils [root@xingdian ~]# yum-config-manager --enable mysql57-community [root@xingdian ~]# yum-config-manager --disable mysql80-community 方法二：修改文件 [root@xingdian ~]# vim /etc/yum.repos.d/mysql-community.repo ``` ​ 安装mysql ```shell [root@xingdian ~]# yum -y install mysql mysql-server ``` ​ 查看初始密码 ```shell [root@xingdian ~]# grep 'password' /var/log/mysqld.log 2019-07-13T15:14:31.176905Z 1 [Note] A temporary password is generated for root@localhost: k12zPB1r;2Ta ``` ​ 修改密码 ```shell [root@xingdian ~]# mysqladmin -u root -p'k12zPB1r;2Ta' password 'QianFeng@123' 密码：大小写有特殊字符数字 ``` ##### #### 2.主从部署 ​ 注意：实验之前环境初始化，不要有残留的数据 ##### 环境准备 | 节点 | IP地址 | | :----: | :--------: | | Master | 10.0.0.128 | | Slave | 10.0.0.42 | 注意： ​ 所有节点关闭防火墙和selinux ​ 保证yum仓库可用 ​ 保证网络畅通 ​ 如果是克隆的服务器需要修改每台数据库的server-uuid 修改主机名：（所有节点）（可选操作） ```shell [root@xingdian ~]# hostnamectl set-hostname master [root@xingdian ~]# hostnamectl set-hostname slave ``` 添加本地解析：（所有节点）（可选操作） ```shell [root@master ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 10.0.0.128 master 10.0.0.42 slave [root@slave ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 10.0.0.128 master 10.0.0.42 slave ``` ##### Master部署 安装数据库：（略） 启动数据库：（略） 修改数据库初始密码：（略） 主服务器部署： ```shell [root@master ~]# vim /etc/my.cnf log-bin server-id=1 gtid_mode = ON enforce_gtid_consistency=1 ``` 创建授权用户： ```shell [root@master ~]# mysql -u root -pQianFeng@123 mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.39 MySQL Community Server (GPL) Copyright (c) 2000, 2022, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> grant all on *.* to slave@'%' identified by 'QianFeng@123'; Query OK, 0 rows affected, 1 warning (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> exit Bye ``` 重启服务： ```shell [root@master ~]# systemctl restart mysqld ``` ##### Slave部署 安装数据库：（略） 启动数据库：（略） 修改数据库初始密码：（略） 从服务器部署： ```shell [root@slave ~]# vim /etc/my.cnf log-bin server-id=2 gtid_mode = ON enforce_gtid_consistency=1 relay_log_recovery = on master-info-repository=TABLE relay-log-info-repository=TABLE //这两个参数会将master.info和relay.info保存在表中，默认是Myisam引擎，官方建议用 ``` 重启服务： ```shell [root@slave ~]# systemctl restart mysqld ``` 配置连接主服务器： ```shell [root@slave ~]# mysql -u root -pQianFeng@123 mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.7.39-log MySQL Community Server (GPL) Copyright (c) 2000, 2022, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> change master to -> master_host='master', -> master_user='slave', -> master_password='QianFeng@123', -> master_auto_position=1; Query OK, 0 rows affected, 2 warnings (0.00 sec) ``` 启动Slave： ```shell mysql> start slave; Query OK, 0 rows affected (0.00 sec) ``` 主从状态验证： ```shell mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: master Master_User: slave Master_Port: 3306 Connect_Retry: 60 Master_Log_File: master-bin.000001 Read_Master_Log_Pos: 154 Relay_Log_File: slave-relay-bin.000002 Relay_Log_Pos: 369 Relay_Master_Log_File: master-bin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 154 Relay_Log_Space: 576 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: 00813e87-4321-11ed-a33c-000c29311164 Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 1 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) ``` 数据验证： 主服务器创建数据： ```shell [root@master ~]# mysql -u root -pQianFeng@123 mysql: [Warning] Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.39-log MySQL Community Server (GPL) Copyright (c) 2000, 2022, Oracle and/or its affiliates. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> create database qfcloud; Query OK, 1 row affected (0.00 sec) mysql> exit Bye ``` 从服务器查验数据： ```shell mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | qfcloud | | sys | +--------------------+ 5 rows in set (0.00 sec) ``` ##