1. MySQL (5.7) installation
tar xf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz -C /usr/src/
ln -s /usr/src/mysql-5.7.22-linux-glibc2.12-x86_64/ /usr/local/mysql
echo "export PATH=$PATH:/usr/local/mysql/bin/">> /etc/profile
source /etc/profile
echo $PATH
useradd -M -s /sbin/nologin mysql
mysqld --user=mysql --initialize --datadir=/usr/local/mysql/data
Remember the red place, that is the password after initial encryption. Will be used later.
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
/etc/init.d/mysqld start
Can not start up, modify the configuration file
vim /etc/my.cnf
Delete and re-add the following content:
######################################### ###
[client]
port = 3306
socket = /tmp/mysql.sock
[mysqld]
server-id = 2
port = 3306
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
#################################################
/etc/init.d/mysqld start
mysql -uroot -p"waC-5a<pyftY"
mysql> set password=password('123123'); // 修改密码
exit
mysql -uroot -p123123
2. The same goes for the slave, configure master-slave replication after installation
Note that the server-id in the configuration file cannot be the same
Master host:
`Vim /etc/my.cnf insert a piece of code here
Add a piece
################################# ####################################################################################################################################################################################################################################################### ##########
[mysqld]
server-id = 2
port = 3306
log-bin=/usr/local/mysql/data/bin-log
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
##############################################
mysql -uroot -p123123
mysql> grant replication slave on *.* to 'repl'@'192.168.9.10'
-> identified by '123123';
show master status\G;
Slave slave:
mysql -uroot -p123123
mysql> change master to master_host='192.168.9.9',
-> master_user='repl',
-> master_password='123123',
-> master_log_file='bin-log.000001',
-> master_log_pos=448;
The content of the last two lines is the corresponding content in the master picture.
show slave status\G;View
It must be yes, if not, please turn off the firewall.
2. Based on GTID master-slave replication
Master host:
mysql -uroot -p123123
mysql> show variables like "gtid_mode";
set global gtid_mode=1;
mysql> show variables like "gtid_mode";
set global gtid_mode=2;
mysql> show variables like "gtid_mode";
set global gtid_mode=3;
mysql> show variables like "enforce_gtid_consistency";
mysql> set global enforce_gtid_consistency=1;
mysql> show variables like "enforce_gtid_consistency";
set global gtid_mode=3;
show variables like"gtid_mode";
Slave from the library:
Open gtid, same as above
mysql> set global gtid_mode=1;
Query OK, 0 rows affected (0.01 sec)
mysql> set global gtid_mode=2;
Query OK, 0 rows affected (0.03 sec)
mysql> set global enforce_gtid_consistency=on;
Query OK, 0 rows affected (0.00 sec)
mysql> set global gtid_mode=3;
Query OK, 0 rows affected (0.02 sec)
mysql> show variables like "gtid_mode";
mysql> change master to master_host='192.168.9.9',
-> master_user='repl',
-> master_password='123123',
-> master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.04 sec)
mysql> start slave;
Query OK, 0 rows affected (0.00 sec)
mysql> show slave status\G;
Finally, test it.
You can build or delete a library.
show slave status\G;
Note: gtid_mode will become off after restarting the database, so you can modify the configuration file /etc/my.cnf.
vim /etc/my.cnf
1 [client]
2 port = 3306
3 socket = /tmp/mysql.sock
4
5 [mysqld]
6 server-id = 2
7 port = 3306
8 gtid_mode=ON
9 enforce_gtid_consistency=ON
10 log-bin=/usr/local/mysql/data/bin-log
11 basedir = /usr/local/mysql
12 datadir = /usr/local/mysql/data
[root@mastre ~]# /etc/init.d/mysqld restart
Shutting down MySQL............ SUCCESS!
Starting MySQL. SUCCESS!
