rpm包安装mysql

1、从官网获取rpm包压缩文件，选择版本号为偶数稳定版本

2、创建目录并将tar解压到创建的目录中

3、安装过程中报 mariadb-libs包冲突，强制卸载

[root@vm-122-187 mysql_rpm]# rpm -e mariadb-libs-5.5.56-2.el7.x86_64

error: Failed dependencies:

        libmysqlclient.so.18()(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64

        libmysqlclient.so.18(libmysqlclient_18)(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64

[root@vm-122-187 mysql_rpm]# rpm -ivh mysql-community-common-5.7.20-1.el7.x86_64.rpm c^C

[root@vm-122-187 mysql_rpm]# rpm -e mariadb-libs-5.5.56-2.el7.x86_64 --nodeps

[root@vm-122-187 mysql_rpm]# rpm -ivh mysql-community-common-5.7.20-1.el7.x86_64.rpm 

warning: mysql-community-common-5.7.20-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

Preparing...                          ################################# [100%]

Updating / installing...

   1:mysql-community-common-5.7.20-1.e################################# [100%]

[root@vm-122-187 mysql_rpm]# 

4、rpm -ivh mysql-community-libs-5.7.20-1.el7.x86_64.rpm 

5、rpm -ivh mysql-community-client-5.7.20-1.el7.x86_64.rpm 

6、最后一步

 rpm -ivh mysql-community-server-5.7.20-1.el7.x86_64.rpm 

7、执行初始化命令

mysqld --initialize --user=mysql

8、查看初始化后生成的mysql root的密码

cat /var/log/mysqld.log

9、启动mysql服务并用初始化的root密码进行登录，第一次登录之后强制要求修改root密码

10、修改root密码