linux系统rpm安装mysql5.7.30详细步骤

1、解压文件

tar -xvf mysql-5.7.30-1.el7.x86_64.rpm-bundle.tar

解压后会有下列包

解压后生的多个rpm包，我们不会用到这么多，只会用到其中的四个，依次执行下面命令

rpm -ivh mysql-community-common-5.7.30-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.30-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.30-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.30-1.el7.x86_64.rpm

2、依次安装

在执行第二条时出现下面的报错

[root@localhost mysql-5.7.30]# rpm -ivh mysql-community-libs-5.7.30-1.el7.x86_64.rpm 
warning: mysql-community-libs-5.7.30-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
error: Failed dependencies:
	mysql-community-common(x86-64) >= 5.7.9 is needed by mysql-community-libs-5.7.30-1.el7.x86_64
	mariadb-libs is obsoleted by mysql-community-libs-5.7.30-1.el7.x86_64

错误原因，组件冲突
解决办法，卸载相关组件

[root@localhost mysql-5.7.30]# rpm -qa | grep postfix
postfix-2.10.1-7.el7.x86_64
[root@localhost mysql-5.7.30]# rpm -qa | grep mariadb
mariadb-libs-5.5.60-1.el7_5.x86_64
[root@localhost mysql-5.7.30]# rpm -ev postfix-2.10.1-7.el7.x86_64
Preparing packages...
postfix-2:2.10.1-7.el7.x86_64
[root@localhost mysql-5.7.30]# rpm -ev mariadb-libs-5.5.60-1.el7_5.x86_64
Preparing packages...
mariadb-libs-1:5.5.60-1.el7_5.x86_64
[root@localhost mysql-5.7.30]# 

解决完上面的问题后，
再次执行上面四条命令即可

3、启动mysql

 查看mysql是否启动
	service mysqld status
	
	# 启动mysql
	service mysqld start
	
	# 停止mysql
	service mysqld stop
	
	# 重启mysql
	service mysqld restart

4、查看临时密码

grep password /var/log/mysqld.log

[root@localhost mysql-5.7.30]# service mysqld status
Redirecting to /bin/systemctl status mysqld.service
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
[root@localhost mysql-5.7.30]# service mysqld start
Redirecting to /bin/systemctl start mysqld.service
[root@localhost mysql-5.7.30]# service mysqld stop
Redirecting to /bin/systemctl stop mysqld.service
[root@localhost mysql-5.7.30]# service mysqld restart
Redirecting to /bin/systemctl restart mysqld.service
[root@localhost mysql-5.7.30]# grep password /var/log/mysqld.log
2020-05-11T09:57:19.498626Z 1 [Note] A temporary password is generated for root@localhost: Pw?ua>nVl31t
2020-05-11T09:57:39.540579Z 0 [Note] Shutting down plugin 'validate_password'
2020-05-11T09:57:41.255835Z 0 [Note] Shutting down plugin 'sha256_password'
2020-05-11T09:57:41.255841Z 0 [Note] Shutting down plugin 'mysql_native_password'
[root@localhost mysql-5.7.30]# mysql -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.30

Copyright (c) 2000, 2020, 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> 

MySQL5.7授权用户远程访问

grant all privileges on *.* to 'root'@'%' identified by 'oa123456' with grant option;
flush privileges;
exit;

注意:
上面的命令原型如下:

grant all privileges on *.* to 'username'@'%' identified by 'password' with grant option;

命令中的“%”相当于授权任意主机。

#查看授权情况
mysql> select host,user from user; 
+-----------+---------------+
| host      | user          |
+-----------+---------------+
| localhost | mysql.session |
| localhost | mysql.sys     |
| localhost | root          |
+-----------+---------------+
3 rows in set (0.00 sec)


mysql> grant all privileges on *.* to 'root'@'%' identified by 'my_password' with grant opt
tion;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> select host,user from user;
+-----------+---------------+
| host      | user          |
+-----------+---------------+
| %         | root          |
| localhost | mysql.session |
| localhost | mysql.sys     |
| localhost | root          |
+-----------+---------------+
4 rows in set (0.00 sec)