我的服务器是CentOS 6.9，试图安装mysql服务器。安装失败，错误包如图所示。
---> Package mysql-community-server.x86_64 0:5.7.20-1.el6 will be updated
---> Package mysql-community-server.x86_64 0:5.7.20-1.el7 will be an update
我认为以上一行强制我的安装到CentOS 7，导致错误包。
[chaoyou@YMYG ~]$ sudo yum install mysql-community-server
Loaded plugins: fastestmirror, refresh-packagekit, security
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirrors.tongji.edu.cn
* extras: mirrors.aliyun.com
* updates: mirrors.aliyun.com
* webtatic: sp.repo.webtatic.com
Resolving Dependencies
--> Running transaction check
---> Package mysql-community-server.x86_64 0:5.7.20-1.el6 will be updated
---> Package mysql-community-server.x86_64 0:5.7.20-1.el7 will be an update
--> Processing Dependency: mysql-community-common(x86-64) = 5.7.20-1.el7 for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: systemd for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: systemd for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: libstdc++.so.6(GLIBCXX_3.4.15)(64bit) for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: libsasl2.so.3()(64bit) for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Running transaction check
---> Package mysql-community-common.x86_64 0:5.7.20-1.el6 will be updated
---> Package mysql-community-common.x86_64 0:5.7.20-1.el7 will be an update
---> Package mysql-community-server.x86_64 0:5.7.20-1.el7 will be an update
--> Processing Dependency: systemd for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: systemd for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: libstdc++.so.6(GLIBCXX_3.4.15)(64bit) for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: libc.so.6(GLIBC_2.17)(64bit) for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Processing Dependency: libsasl2.so.3()(64bit) for package: mysql-community-server-5.7.20-1.el7.x86_64
--> Finished Dependency Resolution
Error: Package: mysql-community-server-5.7.20-1.el7.x86_64 (mysql57-community)
Requires: libstdc++.so.6(GLIBCXX_3.4.15)(64bit)
Error: Package: mysql-community-server-5.7.20-1.el7.x86_64 (mysql57-community)
Requires: libc.so.6(GLIBC_2.17)(64bit)
Error: Package: mysql-community-server-5.7.20-1.el7.x86_64 (mysql57-community)
Requires: systemd
Error: Package: mysql-community-server-5.7.20-1.el7.x86_64 (mysql57-community)
Requires: libsasl2.so.3()(64bit)
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest