MySQL安装-解压包安装

创建用户组和用户

[root@localhost software]# groupadd mysql
groupadd：“mysql”组已存在
[root@localhost software]# useradd -g mysql mysql
useradd：用户“mysql”已存在
[root@localhost software]# 
[root@localhost software]# passwd mysql
更改用户 mysql 的密码 。
新的 密码：
无效的密码： 密码是一个回文
重新输入新的 密码：

解压安装包

[root@localhost software]# tar -zxvf mysql-5.7.26-el7-x86_64.tar.gz

移动解压后的文件夹

[root@localhost software]# mv mysql-5.7.26-el7-x86_64/ /usr/local/mysql

更改所属的组和用户

[root@localhost mysql]# cd /home/mysql/
[root@localhost mysql]# chown -R mysql mysql/
[root@localhost mysql]# chgrp -R mysql mysql/
[root@localhost mysql]# mkdir data
[root@localhost mysql]# chown -R mysql:mysql data

安装

[root@localhost mysql]# cd /usr/local/mysql/
[root@localhost mysql]# bin/mysql_install_db --user=mysql --datadir=/home/mysql/data/
2019-07-19 11:02:18 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
2019-07-19 11:02:20 [WARNING] The bootstrap log isn't empty:
2019-07-19 11:02:20 [WARNING] 2019-07-19T03:02:18.443343Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead
2019-07-19T03:02:18.443888Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)
2019-07-19T03:02:18.443892Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)

设置目录及权限

[root@localhost mysql]# cp ./support-files/mysql.server /etc/init.d/mysql
[root@localhost etc]# vi my.cnf
修改配置文件
[root@localhost etc]# chown 777 my.cnf
[root@localhost etc]# chmod +x /etc/init.d/mysql 

设置开机启动

[root@localhost etc]# chkconfig --level 35 mysql on
[root@localhost etc]# chkconfig --list mysql
mysql              0:关    1:关    2:开    3:开    4:开    5:开    6:关
[root@localhost etc]# 

修改配置文件

[root@localhost /]# vi /etc/profile
修改/etc/profile，在最后添加如下内容
# 修改/etc/profile文件
#set mysql environment
export PATH=$PATH:/usr/local/mysql/bin
#使文件生效
[root@localhost /]# source /etc/profile
[root@localhost /]# 

获得mysql初始密码

[root@localhost /]# cat /root/.mysql_secret
# Password set for user 'root@localhost' at 2019-07-19 11:02:18 
Pkz:zkdpy50q
[root@localhost /]# 

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 2
Server version: 5.7.26-log

Copyright (c) 2000, 2019, 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('root');
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
mysql> exit
Bye

添加远程访问权限

[root@localhost /]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 4
Server version: 5.7.26-log MySQL Community Server (GPL)

Copyright (c) 2000, 2019, 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> 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.session |
| localhost | mysql.sys     |
+-----------+---------------+
3 rows in set (0.00 sec)

mysql> 

重启mysql生效

[root@localhost /]# service mysql stop
Shutting down MySQL.. SUCCESS! 
[root@localhost /]# service mysql start
Starting MySQL... SUCCESS! 
[root@localhost /]# service mysql status
 SUCCESS! MySQL running (46983)
[root@localhost /]# 

打开端口

firewall-cmd --permanent --zone=public --add-port=3306/tcp //永久
[root@localhost /]# firewall-cmd --permanent --zone=public --add-port=3306/tcp
success
[root@localhost /]# firewall-cmd --reload
success
[root@localhost /]#