1、下载tar包,这里使用wget从官网下载
wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
2、将mysql安装到/usr/local/mysql下
解压
tar -xvf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz
移动
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目录
mkdir /usr/local/mysql/data
4、新建mysql用户、mysql用户组
添加mysql用户组
groupadd mysql
添加mysql用户
useradd mysql -g mysql
5、将/usr/local/mysql的所有者及所属组改为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
如果出现以下错误:
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
则使用以下命令:
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --initialize
编辑/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
# 取消密码验证
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、开启服务
将mysql加入服务
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
开机自启
chkconfig mysql on
开启
service mysql start
8、设置密码(登陆mysql时如果发现mysql命令未找到,请查看文章末尾注的地方)
登录(由于/etc/my.cnf中设置了取消密码验证,所以此处密码任意)
mysql> use mysql;
mysql> update user set authentication_string=password('你的密码') where user='root';
mysql> flush privileges;
mysql> exit
9、将/etc/my.cnf中的skip-grant-tables删除
10、登录再次设置密码(不知道为啥如果不再次设置密码就操作不了数据库了)
/usr/local/mysql/bin/mysql -u root -p
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '修改后的密码';
mysql> flush privileges;
mysql> exit;
11、允许远程连接
/usr/local/mysql/bin/mysql -u root -p
mysql> use mysql;
mysql> update user set host='%' where user = 'root';
mysql> flush privileges;
mysql> eixt;
注:如果在登陆mysql时出现
原因是由于系统默认会查找/usr/bin下的命令,如果这个命令不在这个目录下,当然会找不到命令,我们需要做的就是映射一个链接到/usr/bin目录下,相当于建立一个链接文件。
首先得知道mysql命令或mysqladmin命令的完整路径,比如mysql的路径是:/usr/local/mysql/bin/mysql,我们则可以这样执行命令:
ln -s /usr/local/mysql/bin/mysql /usr/bin