MySQL的主从复制配置与双主热备

MySQL主从复制

准备两个Mysql服务器

配置主机服务器 192.168.199.101

vim my.cnf

server-id=1
log_bin=/var/log/mysql/mysql-bin.log

保存重启mysql

mysql -uroot -proot 
mysql>show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000002 |    76481 |              |                  |
+------------------+----------+--------------+------------------+
//创建授权账号 授权账号为 slave 密码为 123456 ip地址为192.168.199.102 的从服务器
grant replication slave on *.* to [email protected] identified by '123456' 

配置从服务器 192.168.199.102

vim my.cnf

server-id=21
relay_log=/var/log/mysql/mysql-relay-bin.log

保存重启mysql

mysql -uroot -proot

stop slave;
//开启监听 此处master_log_file和master_log_pos与服务器192.168.199.101对应
change master to master_host='192.168.199.101', master_port=3306, master_user='slave', master_password='123456', master_log_file='mysql-bin.000002', master_log_pos=76481;
start slave;
//查看监听情况
show slave status\G;

双主热备

配置服务器 192.168.199.102

vim my.cnf

server-id=21
log_bin=/var/log/mysql/mysql-bin.log
relay_log = /var/log/mysql/mysql-relay-bin.log
log_slave_updates =1

保存重启mysql

mysql -uroot -proot 
mysql>show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |    80760|              |                  |
+------------------+----------+--------------+------------------+
//创建授权账号 授权账号为 master 密码为 123456 ip地址为192.168.199.101 的服务器
grant replication slave on *.* to [email protected] identified by '123456' 

配置服务器 192.168.199.101

vim my.cnf

server-id=1
log_bin=/var/log/mysql/mysql-bin.log
relay_log = /var/log/mysql/mysql-relay-bin.log
log_slave_updates =1

保存重启mysql

mysql -uroot -proot 
stop slave;
//开启监听  此处master_log_file和master_log_pos与服务器192.168.199.102对应
change master to master_host='192.168.199.102', master_port=3306, master_user='master', master_password='123456', master_log_file='mysql-bin.000001', master_log_pos=80760;
start slave;
show slave status\G;