mysql 配置主从

1.下载mysql 安装包
 
2.安装mysql
 
  2.1 解压
    tar -zxvf mysql-5.6.41-linux-glibc2.12-x86_64.tar.gz
   2.2 复制到 /usr/local/mysql 目录
    cp -r mysql-5.6.41-linux-glibc2.12-x86_64 /usr/local/mysql
  2.3 添加用户组
    groupadd mysql
  2.4 添加用户
    useradd -g mysql mysql
  2.5 创建目录
    cd /usr/local/mysql/
 
    mkdir ./data/mysql
 
    chown -R mysql:mysql ./
 
    apt-get install libaio1 libaio-dev
 
    ./scripts/mysql_install_db --user=mysql --datadir=/usr/local/mysql/data/mysql
 
 
  2.6 复制mysql.server
    cp support-files/mysql.server /etc/init.d/mysqld
 
    chmod 755 /etc/init.d/mysqld
 
    cp support-files/my-default.cnf /etc/my.cnf
  2.7 修改启动脚本
  vi /etc/init.d/mysqld
 
    basedir=/usr/local/mysql/
    datadir=/usr/local/mysql/data/mysql
 
  2.8 启动服务
    service mysqld start
 
  2.9 测试连接
    ./mysql/bin/mysql -uroot
 
   修改root 密码
    set password for root@localhost = password('123'); 
 
  执行下边的命令,让远程可以用root连接:
    GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123' WITH GRANT OPTION;
 
  在master和slave中都创建一个名字叫HA的数据库
 
  2.10 将mysql 加入到环境变量
    export PATH=$PATH:/usr/local/mysql/bin
    source /etc/profile
 
 
 
克隆刚才配置的虚拟机,修改auto.cnf 的uuid , 使master和slave的id 不同
vi /usr/local/mysql/data/mysql/auto.cnf
 
3.修改master 的my.cnf
  vi /etc/my.cnf
 
    server_id =1
    log_bin=mysql-bin
    binlog-do-db=HA
    binlog-ignore-db=mysql
4.重启master 的mysql(master 服务器)
  service mysqld restart
 
5.验证(master 服务器)
  cd /usr/local/mysql/bin/
 
  ./mysql -uroot -p123
 
  mysql> show variables like 'server_id';
  mysql> show master status;
 
 

 

6.添加一个同步用户slaveUser并赋值权限(用于从服务器slave使用)(master 服务器)
  mysql>create user slaveUser ;
  mysql>grant replication slave on *.* to 'slaveUser'@'192.168.117.145' identified by '123';
 
7.修改slave 的 mycnf
   vi /etc/my.cnf
    server_id = 2
    log-bin=mysql-bin
    replicate-do-db=HA #要同步的mstest数据库,要同步多个数据库,就多加几个replicate-db-db=数据库名
    replicate-ignore-db=mysql  #要忽略的数据库 
 
8.重启slave 的mysql
   service mysqld restart
 
9.校验slave
  mysql> show variables like 'server_id';
 
 

 

 
10. 修改slave参数
  mysql> stop slave;
 
  mysql> change master to master_host='192.168.117.143',master_user='slaveUser',master_password='123',master_log_file='mysql-bin.000001' ,master_log_pos=732;
  其中master_log_file 和master_log_pos 是在master服务器中执行show master status; 得到的
 
  mysql> start slave;
 
11. 重启slave mysql server: service mysqld restart
 
12.验证(slave)
  mysql> show slave status \G
 
在master的HA数据库中创建几条记录,检查slave中的数据
 
 
 

 

 
 
 
 
MySQL登录时出现 Access denied for user 'root'@'xxx.xxx.xxx.xxx' (using password: YES):
 
grant all privileges on *.* to root@'%' identified by '123';
 
 
[ERROR] Slave SQL: Slave failed to initialize relay log info structure from the repository, Error_code: 1872
 
reset slave
mysql>stop slave;
mysql>reset slave;
 
mysql>change master to master_host='192.168.117.143',master_user='slaveUser',master_password='123',master_log_file='mysql-bin.000001' ,master_log_pos=732;
 
mysql>start slave;
 
show slave status \G
 

posted on 2018-10-16 15:35  gaizhongfeng  阅读(161)  评论(0编辑  收藏  举报