1、下載tar包，這里使用wget從官網下載
https://dev.mysql.com/downloads/mysql/
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
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
如果出現以下錯誤：
2018-07-14 06:40:32 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize 2018-07-14 06:40:32 [ERROR] Child process: /usr/local/mysql/bin/mysqldterminated prematurely with errno= 32 2018-07-14 06:40:32 [ERROR] Failed to execute /usr/local/mysql/bin/mysqld --bootstrap --datadir=/usr/local/mysql/data --lc-messages-dir=/usr/local/mysql/share --lc-messages=en_US --basedir=/usr/local/mysql
則使用以下命令（記得把上面命令生成的data文件內容刪掉）：
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize
如果出現以下錯誤：
/usr/local/mysql/bin/mysqld: error while loading shared libraries: libnuma.so.1: cannot open shared object file: No such file or directory
則執行以下命令：
yum -y install numactl
完成后重復上個步驟，繼續安裝（同樣把上面data文件內容刪掉）：
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize
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
(有時候回報如下錯誤：
1.service mysql start;
報錯：mysql is neither service nor target!?
2.systemctl start mysql:
報錯：sysemctl start mysql ： Failed to star mysql.service: Unit mysql.service failed to load: No such file ....)
解決方案：依次執行下面命令
systemctl unmask mysql.service
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 '修改后的密碼';
>>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;
>>eixt;
如果不行，直接關掉linux的防火牆。
systemctl disable firewalld
這樣還不行的話，檢查服務器入棧入棧規則。
12、添加快捷方式
ln -s /usr/local/mysql/bin/mysql /usr/bin