MySQL master-slave replication

MySQL master-slave replication - create a new server:
1. You need to simulate two servers to provide two different MySQLs, and use vm to create two Linux virtual machines to create new onesThe virtual machine:
First modify the network initialization configuration to load the network card, 1.cd /etc/sysconfig/network-scripts 2.vim ifcfg-ens33 After entering, change the no at the end to yes

Second, install MySQL, use rpm to install here (yum can also be used)
Steps: upload, unzip to the specified folder, download in order - because it cannot handle dependencies by itself, Baidu finds the order (rpm needs to be in the download servicebefore installing net-tools)

Three, start MySQL, find the initial password cat /var/log/mysqld.log | grep password, then log in, and then set a new password
(need to set the password length set global validate_password_length=4;
Security levelset global validate_password_policy=LOW;
password set password=password('root');
permissions grant all on *.* to 'root'@'%' identified by 'root';
refresh flush privileges;)

MySQL master-slave replication - configuration:
1. The original server configuration mysql: enable binary log and set unique id in my.cnf

Second, the account mysql needed to create a new server> GRANT REPLICATION SLAVE ON *.* to 'xiaoming'@'%' identified by '[email protected]';

Three, new server configuration mysql:
Set a unique id in my.cnf
Bind the new server user to the privileged account provided by the original server change master to master_host='192.168.162.128',master_user='xiaoming',master_password='[email protected]',master_log_file='mysql-bin.000003',master_log_pos=441;
(The file and pos here need to be obtained from the original server)