Four ways to install MySQL in Linux

Source code installation MySQL：

1. Install development tools and packages
yum install make gcc gcc-c++ cmake bison-devel ncurses-devel 
yum install libaio libaio-devel openssl-devel 
yum install perl-Data-Dumper 
yum install net-tools 

2. decompression
 tar xvf mysql-boost-5.7.14.tar.gz -C /ruanjian/mysql
( First create mysql Folder )

3. Create users and groups
groupadd -r -g 306 mysql 
useradd -g 306 -r -u 306 mysql

4.
cmake -DCMAKE_INSTALL_PREFIX=/ruanjian/mysql -DMYSQL_DATADIR=/ruanjian/mysql/data -DDEFAULT_CHARSET=utf8 DDEFAULT_COLLATION=utf8_general_ci -DWITH_BOOST=/ruanjian/mysql/mysql-7.5/boost/
( Configure in the unzipped package )
5. Compilation and installation
[[email protected] mysql-5.7.14]# make && make install

6. initialization
/ruanjian/mysql/bin/mysqld --initialize --user=mysql -datadir=/ruanjian/mysql/data --basedir=/ruanjian/mysql/

7. by mysql Provide the master configuration file
cd /usr/local/mysql/ 
\cp support-files/my-default.cnf /etc/my.cnf 
vim /etc/my.cnf
Add the following line to specify mysql The location of the data file ： 
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306

8. by mysql Provide sysv Service script
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld 
chmod +x /etc/init.d/mysqld 
chkconfig --add mysqld 
chkconfig mysqld on

9. Configure environment variables
vim /etc/profile.d/mysql.sh 
export PATH=$PATH:/usr/local/mysql/bin 
source mysql.sh
10. start-up MySQL
11. Configure a password
Use security plug-ins ： mysql_sevure_installation
Get into MySQL terminal ： ALTER USER 'root'@'localhost' IDENTIFIED BY 'MySQL'; 
If you make a mistake , The password is too short ,MySQL No authentication succeeded
Modify the authentication rules ： 
set global validate_password_policy=0; 
set global validate_password_length=1;

Binary installation MySQL：

1. newly build MySQL Users and groups （ There is no need to create groups ）
groupadd -r -g 306 mysql 
useradd -g 306 -r -u 306 mysql

2. Unzip the file
3. install MySQL  tar xvf mysql-5.7.14-linux-glibc2.5-x86_64.tar.gz 
4. Create virtual connection  ln -sv mysql-5.7.14-linux-glibc2.5-x86_64 mysql 
5. change MySQL The group to which the belongs   chown -R mysql.mysql mysql/*（ You can leave it blank ）
6. initialization mysql/bin/mysqld --initialize --user=mysql --basedir=/ruanjian/mysql -datadir=/ruanjian/mysql/data 
7. Set up profiles and provide sysv Service script ( must CD To /ruanjian/mysql Catalog )
 \cp support-files/my-default.cnf /etc/my.cnf 
cp support-files/mysql.server /etc/rc.d/init.d/mysqld 

vim /etc/my.cnf 
Add the following line to specify mysql The location of the data file ： 
basedir = /ruanjian/mysql
datadir = /ruanjian/mysql/data
port = 3306

notes ： May come across mysql.sock Can't find , therefore Set up

socket=/var/lib/mysql/mysql.sock   --- solve mysq.sock No problem found
skip-grant-tables                             -- Setting startup does not require a password

No need to enter the password mysql Modify the expired password permission later

update mysql.user set password_expired='N';

Then enter /etc/my.cnf Note out skip-grant-tables,

Enter with the initial password that will do Change Password

see mysqld Whether there is Execution Authority   Add execute permission ：chmod +x /etc/rc.d/init.d/mysqld

8. start-up MySQL 
chkconfig --add mysqld -- Add as system service  
chkconfig mysqld on -- Boot up （ Not set up ）
systemctl start mysqld   start-up MySQL

9. Configure environment variables
cd /etc/profile.d/ # vim mysql.sh 
Add the following ：export PATH=$PATH:/ruanjian/mysql/bin
 source mysql.sh
10. Configure a password （ ditto ）
Use security plug-ins ： mysql_sevure_installation
Get into MySQL terminal ： ALTER USER 'root'@'localhost' IDENTIFIED BY 'MySQL'; 
If you make a mistake , The password is too short ,MySQL No authentication succeeded
Modify the authentication rules ： 
set global validate_password_policy=0; 
set global validate_password_length=1;

yum install MySQL：

1. To configure yum Source
2. install MySQL   yum install  mysql-server mysql-client

If an error is reported ： software package ：akonadi-mysql-1.9.2-4.el7.x86_64 (@anaconda) need ：mariadb-server Deleting : 1:mariadb-server-5.5.60-1.el7_5.x86_64 (@anaconda) mariadb-server = 1:5.5.60-1.el7_5 replace , from : mysql-community-server-5.6.44-2.el7.x86_64 (mysql56-community) Not found

You need to yum -y remove mariadb-libs To cancel mariadb Dependency of

3. start-up MySQL   systemctl start mysqld
4. View random password   grep 'temporary password' /var/log/mysqld.log
Or use a security plug-in ： mysql_sevure_installation The first random password can be left blank , Press enter to change the password

5. The first time you log in, change your password
Get into MySQL terminal ： ALTER USER 'root'@'localhost' IDENTIFIED BY 'MySQL'; 
If you make a mistake , The password is too short ,MySQL No authentication succeeded
Modify the authentication rules ： 
set global validate_password_policy=0; 
set global validate_password_length=1; 

The location of the configuration file ：    /etc/mysql/mysql.conf.d/mysqld.cnf

rpm install MySQL：

1. Unzip the installation package tar xvf
2. Delete mariadb-libs
3. Installation depends on  net-tools
4. install MySQL 
rpm -ivh mysql-community-client-5.7.14-1.el7.x86_64.rpm 
mysql-community-common-5.7.14-1.el7.x86_64.rpm 
mysql-community-libs-5.7.141.el7.x86_64.rpm 
mysql-community-server-5.7.14-1.el7.x86_64.rpm

5. start-up MySQL  systemctl start mysqld
6. Configure a password （ ditto ）
Use security plug-ins ： mysql_sevure_installation
Get into MySQL terminal ： ALTER USER 'root'@'localhost' IDENTIFIED BY 'MySQL'; 
If you make a mistake , The password is too short ,MySQL No authentication succeeded
Modify the authentication rules ： 
set global validate_password_policy=0; 
set global validate_password_length=1;