Mysql主从复制安装笔记

Mysql主从复制安装文档

卸载旧版本

查看MySQL

rpm -qa|grep mysql

卸载MySQL

rpm -e --nodeps mysql-libs-5.1.73-5.el6_6.x86_64

删除数据目录（如果有）

ls  -l  /var/lib|grep mysql
rm  -rf  /var/lib/mysql

下载并安装

安装环境是CentOS6，所以应该选用el6的安装包；CentOS7应该选用el7安装包。

下载mysql

python

wget http://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.16-1.el6.x86_64.rpm-bundle.tar

解压

tar -xvf mysql-5.7.16-1.el6.x86_64.rpm-bundle.tar

按照依赖关系依次安装rpm包

依赖关系依次为common→libs→client→server

rpm -ivh mysql-community-common-5.7.16-1.el6.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.16-1.el6.x86_64.rpm
rpm -ivh mysql-community-client-5.7.16-1.el6.x86_64.rpm
rpm -ivh mysql-community-server-5.7.16-1.el6.x86_64.rpm

启动mysqld服务

cd /usr/sbin/
service mysqld start

检查mysqld运行状态

service mysqld status
mysqld (pid  3558) is running...

查看临时登录密码

vim /var/log/mysqld.log

2016-12-02T09:17:59.902923Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2016-12-02T09:18:00.794353Z 0 [Warning] InnoDB: New log files created, LSN=45790
2016-12-02T09:18:01.057547Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2016-12-02T09:18:01.196139Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 38e817fa-b870-11e6-a9dc-3417ebd14ee0.
2016-12-02T09:18:01.228360Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2016-12-02T09:18:01.228821Z 1 [Note] A temporary password is generated for root@localhost: l8u.+s3QMQh!

发现临时密码为 y2xpqZthtt)s

用户临时密码登陆mysql

mysql -uroot -p
//设置validate_password_policy 0,1,2 级别低中高
set global validate_password_policy=0;
//设置validate_password_length 长度
set global validate_password_length=4;

//修改root密码
alter user 'root'@'localhost' identified by 'root@bi';

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)

show tables;
+---------------------------+
| Tables_in_mysql           |
+---------------------------+
| columns_priv              |
| db                        |
| engine_cost               |
| event                     |
| func                      |
| general_log               |
| gtid_executed             |
| help_category             |
| help_keyword              |
| help_relation             |
| help_topic                |
| innodb_index_stats        |
| innodb_table_stats        |
| ndb_binlog_index          |
| plugin                    |
| proc                      |
| procs_priv                |
| proxies_priv              |
| server_cost               |
| servers                   |
| slave_master_info         |
| slave_relay_log_info      |
| slave_worker_info         |
| slow_log                  |
| tables_priv               |
| time_zone                 |
| time_zone_leap_second     |
| time_zone_name            |
| time_zone_transition      |
| time_zone_transition_type |
| user                      |
+---------------------------+
31 rows in set (0.00 sec)

mysql主从复制配置

修改主服务器master:

vi /etc/my.cnf
[mysqld]
log-bin=mysql-bin   //[必须]启用二进制日志
server-id=222      //[必须]服务器唯一ID，默认是1，一般取IP最后一段

修改从服务器slave:

vi /etc/my.cnf
[mysqld]
log-bin=mysql-bin   //[不是必须]启用二进制日志
server-id=226      //[必须]服务器唯一ID，默认是1，一般取IP最后一段

重启两台服务器的mysql

/etc/init.d/mysqld restart

在主服务器上建立帐户并授权slave:

GRANT REPLICATION SLAVE ON *.* to 'bi_user'@'%' identified by 'bi123456';

登录主服务器的mysql，查询master的状态

show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 |      440 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

配置从服务器Slave：

change master to master_host='10.1.33.102',master_user='bi_user',master_password='bi123456',master_log_file='mysql-bin.000004',master_log_pos=440;

启动从服务器复制功能

start slave;

在主服务器上授权

grant all privileges on *.* to bi_user@'%'