#首先,将MySQL Yum存储库添加到系统的存储库列表中。

#在https://dev.mysql.com/downloads/repo/yum/地址中,下载mysql yum repository

[root@alone-mysql tools]# wget --no-check-certificate https://dev.mysql.com/get/mysql80-community-release-el6-3.noarch.rpm

#使用以下命令安装下载的发布包,其中U表示升级,v表示显示安装过程,h表示显示进度, 一旦发布包安装到您的系统上,yum update命令进行的任何系统范围的更新(或支持dnf的系统的dnf升级)

将自动升级您系统上的MySQL包,并且如果yum在MySQL yum存储库中找到替代包,那么它还将替换任何本机第三方包。

#也可以使用yum localinstall mysql80-community-release-el6-3.noarch.rpm命令来代替当前命令,这两个命令都是在/etc/yum.repos.d目录中释放两个文件

[root@alone-mysql tools]# rpm -Uvh mysql80-community-release-el6-3.noarch.rpm

warning: mysql80-community-release-el6-3.noarch.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY

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

1:mysql80-community-relea########################################### [100%]

#这样操作之后会在/etc/yum.repos.d目录中释放两个文件

[root@pinyoyougou-docker ~]# ls -l /etc/yum.repos.d | grep mysql

-rw-r--r-- 1 root root 2076 4月 25 2019 mysql-community.repo

-rw-r--r-- 1 root root 2108 4月 25 2019 mysql-community-source.repo

#在MySQL Yum存储库、MySQL社区服务器的不同版本系列托管在不同的子存储库中。最新的GA系列(当前的MySQL 8.0)的子存储库在默认情况下是启用的,所有其他系列(例如,MySQL 5.7系列)的子存储库

在默认情况下是禁用的。使用此命令查看MySQL Yum存储库中的所有子存储库,并查看哪些子存储库已启用或禁用,当前命令其实就是查看/etc/yum.repos.d目录中的

mysql-community.repo和mysql-community-source.repo文件内容

[root@pinyoyougou-docker ~]# yum repolist all | grep mysql

mysql-cluster-7.5-community/x86_64 MySQL Cluster 7.5 Community 禁用

mysql-cluster-7.5-community-source MySQL Cluster 7.5 Community - So 禁用

mysql-cluster-7.6-community/x86_64 MySQL Cluster 7.6 Community 禁用

mysql-cluster-7.6-community-source MySQL Cluster 7.6 Community - So 禁用

mysql-cluster-8.0-community/x86_64 MySQL Cluster 8.0 Community 禁用

mysql-cluster-8.0-community-source MySQL Cluster 8.0 Community - So 禁用

mysql-connectors-community/x86_64 MySQL Connectors Community 启用: 141

mysql-connectors-community-source MySQL Connectors Community - Sou 禁用

mysql-tools-community/x86_64 MySQL Tools Community 启用: 105

mysql-tools-community-source MySQL Tools Community - Source 禁用

mysql-tools-preview/x86_64 MySQL Tools Preview 禁用

mysql-tools-preview-source MySQL Tools Preview - Source 禁用

mysql55-community/x86_64 MySQL 5.5 Community Server 禁用

mysql55-community-source MySQL 5.5 Community Server - Sou 禁用

mysql56-community/x86_64 MySQL 5.6 Community Server 禁用

mysql56-community-source MySQL 5.6 Community Server - Sou 禁用

mysql57-community/x86_64 MySQL 5.7 Community Server 禁用

mysql57-community-source MySQL 5.7 Community Server - Sou 禁用

mysql80-community/x86_64 MySQL 8.0 Community Server 启用: 161

mysql80-community-source MySQL 8.0 Community Server - Sou 禁用

#这里我们需要禁用默认的mysql8,而启用mysql5.5

[root@alone-mysql tools]# yum-config-manager --disable mysql80-community

[root@alone-mysql tools]# yum-config-manager --enable mysql55-community

#再查看已经生效的mysql yum repository

[root@alone-mysql tools]# yum repolist enabled | grep mysql

mysql-connectors-community MySQL Connectors Community 94

mysql-tools-community MySQL Tools Community 78

mysql55-community MySQL 5.5 Community Server 487

#也可以手工对mysql-community.repo文件进行编辑,将mysql 5.5的enabled设置为1,将mysql8.0的enabled设置为0

[root@alone-mysql tools]# ls -l /etc/yum.repos.d/mysql-community.repo

-rw-r--r--. 1 root root 2074 May 26 22:15 /etc/yum.repos.d/mysql-community.repo

0a41d36c5b8462f9494dd694b2f59c14.png

b2fb340966980429785b4d9b18911f7d.png

#然后使用yum安装mysql

[root@alone-mysql tools]# yum install -y mysql-community-server

#启动mysql,在启动mysql的时候留意一下提示信息

[root@alone-mysql tools]# service mysqld start

fdb2172145093c8cf266c2bd3279b8f9.png

#这里按照上面的提示设置一下mysql的密码

[root@alone-mysql tools]# /usr/bin/mysqladmin -u root password 'root'

#现在可以使用新密码登录我们的mysql

[root@alone-mysql tools]# mysql -uroot -p

Enter password:

详细内容查看:https://dev.mysql.com/doc/mysql-yum-repo-quick-guide/en/

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