Linux's open MySQL8 CentOS7 master from a backup, full backup daily time

Note 1: solve the problem MySQL database connection is slow

vim /etc/my.cnf
添加内容：skip-name-resolve，重启数据库。

 ! Note 2 :( password or with other special accord, preceded by \, for example 123321--!!> 123 \ 321)

1, from a backup master

主数据库：
vim /etc/my.cnf
[mysqld]下添加内容：
server-id = 1
log-bin=mysql-bin
relay-log = mysql-relay-bin
replicate-wild-ignore-table=mysql.%
replicate-wild-ignore-table=test.%
replicate-wild-ignore-table=information_schema.%

从数据库：
vim .etc/my.cnf
[mysqld]下添加内容：
server-id = 2 
log-bin=mysql-bin 
relay-log = mysql-relay-bin 
replicate-wild-ignore-table=mysql.% 
replicate-wild-ignore-table=test.% 
replicate-wild-ignore-table=information_schema.%

 Restart the master-slave database

登录主数据库
mysql -uusername -ppassword
mysql>show master status;
找到master_log_file、master_log_pos（一般是mysql-bin.000001和155）
mysql>change master to \