1. Check the firewall is turned off
// Check firewall status Firewall-cmd - State // turn off the firewall systemctl STOP firewalld systemctl disable firewalld
2. Uninstall Centos7 comes Mariadb
rpm -e --nodeps Mariadb******
3. Create a user group and want to turn off
groupadd mysql
useradd -g mysql mysql
4, the installation dependencies
yum -y install libaio
5. Edit Profile
cp /home/mysql-5.7.26-linux-glibc2.12-x86_64/support-files/my-default.cnf /etc/my.cnf
// If there is no my-default.cnf, directly edit / etc / my .cnf
Enter the following in /etc/my.cnf
[mysqld] Port = 3306 # Set installation directory the basedir = / Home / mysql / mysql5. 7.26 # setting data mysql database storage directory DATADIR = / Home / mysql / mysql5. 7.26 / Data Socket = / Home / mysql / mysql5. 7.26 / tmp / mysql.sock the User = MySQL TMPDIR = / Home / MySQL / mysql5. 7.26 / tmp # ip turn bind the bind -address = 0.0 . 0.0 # allow the maximum number of connections max_connections = 200 # service-side character set used by default 8-bit coded character set latin1 #MySQL of "utf8mb4" is the real "UTF - 8" Character -set-Server = utf8mb4 collation -server = utf8mb4_general_ci default storage engine when creating a new table # will use default -storage-Engine = INNODB innodb_buffer_pool_size = 64MB max_allowed_packet = 16M [mysqld_safe] log -error = / Home / MySQL / mysql5 . 7.26 / Data / the error.log PID - File . = / Home / mysql / mysql5 7.26 / Data / mysql.pid [mysql] # mysql client set the default character set default -CHARACTER-sET = utf8mb4 [client] # specify the client file server socket communication path connecting mysql Socket=/home/mysql/mysql5.7.26/tmp/mysql.sock default-character-set=utf8mb4 !includedir /etc/my.cnf.d
6. initialization mysqld
[mysql@smallcloud mysql5.7.26]$ ./bin/mysqld --initialize --user=mysql --basedir=/home/mysql/mysql5.7.26 --datadir=/home/mysql/mysql5.7.26/data
//启动mysql服务：
[mysql@smallcloud mysql5.7.26]$ ./support-files/mysql.server start
7. Set the boot
// copy the startup script to the resource directory (folder requires new mysqld)
[root @ smallcloud ~] # cp /home/mysql/mysql5.7.26/support-files/mysql.server /etc/init.d/mysqld
// increase mysqld service control script execute permissions:
[root @ smallcloud ~] # chmod + the X-/etc/rc.d/init.d/mysqld
// will be added to the system service mysqld service:
[root @ smallcloud Home] # chkconfig --add mysqld
// check mysqld service is already in force:
[root @ smallcloud Home] # chkconfig --list mysqld
8. Set Environment Variables
[root@smallcloud home]# vim /home/mysql/.bash_profile
export PATH=$PATH:/home/mysql/mysql5.7.26/bin
[root@smallcloud home]# source /home/mysql/.bash_profile
9. Log in and change your password
[mysql@smallcloud ~]$ mysql -uroot -p
mysql> set password=password('密码')
mysql> quit