install mysql on centos7
[root@localhost ~]# wget -c https://cdn.mysql.com/Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
--2017-12-10 14:40:34-- https://cdn.mysql.com/Downloads/MySQL-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
Resolving cdn.mysql.com (cdn.mysql.com)... 23.56.185.130
Connecting to cdn.mysql.com (cdn.mysql.com)|23.56.185.130|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 641127384 (611M) [application/x-tar-gz]
1.删除etc目录下的my.cnf文件
[root@localhost ~]# rm /etc/my.cnf
rm: cannot remove ?etc/my.cnf? No such file or directory
2.检查mysql是否存在
[root@localhost ~]# rpm -qa | grep mysql
[root@localhost ~]#
3.检查mysql组和用户是否存在，如无创建
[root@localhost ~]# cat /etc/group | grep mysql
[root@localhost ~]# cat /etc/passwd | grep mysql
4.创建mysql用户组
[root@localhost ~]# groupadd mysql
#创建一个用户名为mysql的用户并加入mysql用户组
[root@localhost ~]# useradd -g mysql mysql
#制定password 为123456
[root@localhost ~]# 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.
5.安装到/usr/local/mysql5.7
[root@localhost ~]# tar -zxvf mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
[root@localhost ~]# mv mysql-5.7.20-linux-glibc2.12-x86_64/ /usr/local/mysql5.7
6.更改所属的组和用户
[root@localhost local]# chown -R mysql mysql5.7/
[root@localhost local]# chgrp -R mysql mysql5.7/
[root@localhost local]# cd mysql5.7/
[root@localhost mysql5.7]# mkdir data
[root@localhost mysql5.7]# chown -R mysql:mysql data
7.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=/usr/local/mysql5.7
# 设置mysql数据库的数据的存放目录
datadir=/usr/local/mysql5.7/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
8.安装和初始化
[root@localhost mysql5.7]# bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql5.7/ --datadir=/usr/local/mysql5.7/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@localhost mysql5.7]# cp ./support-files/mysql.server /etc/init.d/mysqld
[root@localhost mysql5.7]# chown 777 /etc/my.cnf
[root@localhost mysql5.7]# chmod +x /etc/init.d/mysqld
[root@localhost mysql5.7]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!
9.设置开机启动
[root@localhost mysql5.7]# chkconfig --level 35 mysqld on
[root@localhost mysql5.7]# chkconfig --list mysqld
[root@localhost mysql5.7]# chmod +x /etc/rc.d/init.d/mysqld
[root@localhost mysql5.7]# chkconfig --add mysqld
[root@localhost mysql5.7]# chkconfig --list mysqld
[root@localhost mysql5.7]# service mysqld status
SUCCESS! MySQL running (4475)
10.etc/profile/
[root@localhost ~]# vi /etc/profile
export PATH=$PATH:/usr/local/mysql5.7/bin
[root@localhost ~]# source /etc/profile
11.获得初始密码
[root@localhost ~]# cat /root/.mysql_secret
# Password set for user 'root@localhost' at 2017-12-10 15:29:14
T*c*llRqeqE7
12.修改密码
[root@localhost ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.20
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('123456');
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
13.添加远程访问权限
mysql> update user set host='%' where user='root';
Query OK, 1 row affected (0.06 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select host,user from user;
+-----------+---------------+
| host | user |
+-----------+---------------+
| % | root |
| localhost | mysql.session |
| localhost | mysql.sys |
+-----------+---------------+
3 rows in set (0.00 sec)
mysql> create user 'xxx'@'%' identified by '123'
-> ;
Query OK, 0 rows affected (0.04 sec)
重启生效
[root@localhost ~]# service mysqld restart\
> ;
Shutting down MySQL.... SUCCESS!
Starting MySQL. SUCCESS!
[root@localhost ~]# ln -s /usr/local/mysql5.7/bin/mysql /usr/bin/mysql
done.
