先执行wget https://dev.mysql.com//Downloads/MySQL-5.7/mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz命令
这是别人的文章，咱只是收藏一下，亲试可用。
#卸载系统自带的Mariadb [root@hdp265dnsnfs ~]# rpm -qa|grep mariadb mariadb-libs-5.5.44-2.el7.centos.x86_64 [root@hdp265dnsnfs ~]# rpm -e --nodeps mariadb-libs-5.5.44-2.el7.centos.x86_64 #删除etc目录下的my.cnf文件 [root@hdp265dnsnfs ~]# rm /etc/my.cnf rm: cannot remove ?etc/my.cnf? No such file or directory #检查mysql是否存在 [root@hdp265dnsnfs ~]# rpm -qa | grep mysql [root@hdp265dnsnfs ~]# #检查mysql组和用户是否存在，如无创建 [root@hdp265dnsnfs ~]# cat /etc/group | grep mysql [root@hdp265dnsnfs ~]# cat /etc/passwd | grep mysql #创建mysql用户组 [root@hdp265dnsnfs ~]# groupadd mysql #创建一个用户名为mysql的用户并加入mysql用户组 [root@hdp265dnsnfs ~]# useradd -g mysql mysql #制定password 为111111 [root@hdp265dnsnfs ~]# passwd mysql Changing password for user mysql. New password: BAD PASSWORD: The password is a palindrome Retype new password: passwd: all authentication tokens updated successfully. #由于我的/usr/local空间不足，所以我安装到/var [root@hdp265dnsnfs var]# tar -zxvf mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz [root@hdp265dnsnfs var]# mv mysql-5.7.18-linux-glibc2.5-x86_64/ mysql57 #更改所属的组和用户 [root@hdp265dnsnfs var]# chown -R mysql mysql57/ [root@hdp265dnsnfs var]# chgrp -R mysql mysql57/
[root@hdp265dnsnfs var]# cd mysql57/
[root@hdp265dnsnfs mysql57]# mkdir data
[root@hdp265dnsnfs mysql57]# chown -R mysql:mysql data
在etc下新建配置文件my.cnf，并在该文件内添加以下配置
[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8
[mysqld]
skip-name-resolve
#设置3306端口
port = 3306
# 设置mysql的安装目录
basedir=/var/mysql57
# 设置mysql数据库的数据的存放目录
datadir=/var/mysql57/data
# 允许最大连接数
max_connections=200
# 服务端使用的字符集默认为8比特编码的latin1字符集
character-set-server=utf8
# 创建新表时将使用的默认存储引擎
default-storage-engine=INNODB
lower_case_table_names=1
max_allowed_packet=16M
安装和初始化
[root@hdp265dnsnfs mysql57]# bin/mysql_install_db --user=mysql --basedir=/var/mysql57/ --datadir=/var/mysql57/data/ 2017-04-17 17:40:02 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize 2017-04-17 17:40:05 [WARNING] The bootstrap log isn't empty: 2017-04-17 17:40:05 [WARNING] 2017-04-17T09:40:02.728710Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead 2017-04-17T09:40:02.729161Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000) 2017-04-17T09:40:02.729167Z 0 [Warning] Changed limits: table_open_cache: 407 (requested 2000)
[root@hdp265dnsnfs mysql57]# cp ./support-files/mysql.server /etc/init.d/mysqld [root@hdp265dnsnfs mysql57]# chown 777 /etc/my.cnf [root@hdp265dnsnfs mysql57]# chmod +x /etc/init.d/mysqld
[root@hdp265dnsnfs mysql57]# /etc/init.d/mysqld restart Shutting down MySQL.. SUCCESS! Starting MySQL. SUCCESS! #设置开机启动 [root@hdp265dnsnfs mysql57]# chkconfig --level 35 mysqld on [root@hdp265dnsnfs mysql57]# chkconfig --list mysqld [root@hdp265dnsnfs mysql57]# chmod +x /etc/rc.d/init.d/mysqld [root@hdp265dnsnfs mysql57]# chkconfig --add mysqld [root@hdp265dnsnfs mysql57]# chkconfig --list mysqld [root@hdp265dnsnfs mysql57]# service mysqld status SUCCESS! MySQL running (4475)
etc/profile/
export PATH=$PATH:/var/mysql57/bin [root@hdp265dnsnfs mysql57]# source /etc/profile
获得初始密码
[root@hdp265dnsnfs bin]# cat /root/.mysql_secret # Password set for user 'root@localhost' at 2017-04-17 17:40:02 _pB*3VZl5T<6
修改密码
[root@hdp265dnsnfs bin]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 5
Server version: 5.7.18
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.
mysql> set PASSWORD = PASSWORD('111111');
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
添加远程访问权限
mysql> use mysql Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> update user set host='%' where user='root'; Query OK, 1 row affected (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 0 mysql> select host,user from user; +-----------+-----------+ | host | user | +-----------+-----------+ | % | root | | localhost | mysql.sys | +-----------+-----------+ 2 rows in set (0.00 sec)
create user 'xxx'@'%' identified by '123'; 这里 @‘%’ 表示在任何主机都可以登录
重启生效
/bin/systemctl restart mysql.service [root@hdp265dnsnfs bin]# /etc/init.d/mysqld restart Shutting down MySQL.. SUCCESS! Starting MySQL. SUCCESS!
为了在任何目录下可以登录mysql
ln -s /var/mysql57/bin/mysql /usr/bin/mysql