Original text: http://baijiahao.baidu.com/s?id=1584072431498789934&wfr=spider&for=pc
1. Download the MySQL5.7 installation package on the official website: mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz.
Download address: https://dev.mysql.com/downloads/mysql/
2. Remotely access CentOS7 through SSH Secure Shell Client
3. Uninstall the Mariadb database that comes with the system
4. Create mysql user group and mysql user
5. Upload the MySQL installation package to the CentOS7 server /root directory and extract it
# tar xzvf /root/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
6. Move the decompressed installation package to the directory under /data and rename it to mysql
# mv /root/mysql-5.7.20-linux-glibc2.12-x86_64 /data/mysql
The result is as follows
7. Modify permissions
8. Create the data directory as the database storage location
# mkdir /data/mysql/data
9. Initialize mysql
10. Start MySQL and see if it has been started successfully
11. Log in to MySQL with the initial password and change the password
12. Shut down the MySQL service and see if the shutdown is successful
13. Set the boot to start automatically
In the future, you can use the service command to control the start and stop of mysql. The commands are: service mysqld start and service mysqld stop. It is possible that an error will be reported during execution, as shown in the following figure
This is because mysql is installed in the /usr/local directory by default. If it is installed in the /usr/local directory, it will start and close normally, and no error will be reported. However, this time it is installed in the custom /data directory. At this time, you need to modify the /etc/init.d/mysqld file, save it and exit
Then execute the service mysqld start startup command, OK
Then execute the service mysqld stop shutdown command, OK
14. Configure global environment variables
Edit /etc/profile file
# vi /etc/profile
Add the following two lines of configuration at the bottom of the profile file, save and exit
PATH=/data/mysql/bin:/data/mysql/lib:$PATH
export PATH
Setting environment variables takes effect immediately
# source /etc/profile
15. Set up remote host login
Remote login failed
Check if port 3306 is open
# netstat -nupl|grep 3306
Open port 3306 and restart the firewall
Remote login again, success
