1、下載tar包，可直接服務器在線下載

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz

2、將mysql安裝到/usr/local/mysql下

# 解壓

tar -xvf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz

# 移動

mv mysql-5.7.22-linux-glibc2.12-x86_64 /usr/local/

# 重命名

mv /usr/local/mysql-5.7.22-linux-glibc2.12-x86_64 /usr/local/mysql

3、新建data目錄

mkdir /usr/local/mysql/data

4、新建mysql用戶、mysql用戶組

# mysql用戶組

groupadd mysql

# mysql用戶

useradd mysql -g mysql

5、將/usr/local/mysql的所有者及所屬組改為mysql

chown -R mysql.mysql /usr/local/mysql

6、配置

/usr/local/mysql/bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data

# 編輯/etc/my.cnf

[mysqld]
datadir=/usr/local/mysql/data
basedir=/usr/local/mysql
socket=/tmp/mysql.sock
user=mysql
port=3306
character-set-server=utf8
# 取消密碼驗證
skip-grant-tables
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# skip-grant-tables
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

7、開啟服務

# 將mysql加入服務

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql

# 開機自啟

chkconfig mysql on

# 開啟

service mysql start

8、設置密碼

# 登錄（由於/etc/my.cnf中設置了取消密碼驗證，所以此處密碼任意）

/usr/local/mysql/bin/mysql -u root -p

# 操作mysql數據庫

>>use mysql;

# 修改密碼

>>update user set authentication_string=password(‘你的密碼‘) where user=‘root‘;

>>flush privileges;

>>exit;

9、將/etc/my.cnf中的skip-grant-tables刪除

10、登錄再次設置密碼（不知道為啥如果不再次設置密碼就操作不了數據庫了）

/usr/local/mysql/bin/mysql -u root -p

>>ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘修改後的密碼‘;

>>exit;

11、允許遠程連接

/usr/local/mysql/bin/mysql -u root -p

>>use mysql;

>>update user set host=‘%‘ where user = ‘root‘;

>>flush privileges;

>>exit;

12、添加快捷方式

ln -s /usr/local/mysql/bin/mysql /usr/bin

linux 在線完美安裝mysql2.7.22