[root@xg79 ~]# yum -y installmysql-community-server
。。。。。。。。。。。。。
Error: Package:mysql-community-server-5.7.19-1.el6.x86_64 (mysql57-community)
Requires: libsasl2.so.2()(64bit)
Error: Package:2:postfix-2.10.1-6.el7.x86_64 (@anaconda)
Requires:libmysqlclient.so.18()(64bit)
Removing:1:mariadb-libs-5.5.56-2.el7.x86_64 (@anaconda)
libmysqlclient.so.18()(64bit)
Obsoleted By:mysql-community-libs-5.7.19-1.el6.x86_64 (mysql57-community)
~libmysqlclient.so.20()(64bit)
Error: Package:2:postfix-2.10.1-6.el7.x86_64 (@anaconda)
Requires:libmysqlclient.so.18(libmysqlclient_18)(64bit)
Removing:1:mariadb-libs-5.5.56-2.el7.x86_64 (@anaconda)
libmysqlclient.so.18(libmysqlclient_18)(64bit)
Obsoleted By:mysql-community-libs-5.7.19-1.el6.x86_64 (mysql57-community)
Not found
You could try using --skip-broken to workaround the problem
You could try running: rpm -Va --nofiles –nodigest
经过一下午的努力centos7安装mysql时遇到以上错误，解决安装包之后还是不能正确安装mysql，原来是自己的mysql源里面的6和我们使用的CentOS7不匹配导致mysql安装不成功，只需要把所以的6改成7即可
CentOS7安装mysql5.7不成功，解决依赖包之后还是无法安装成功
原文：http://13155409.blog.51cto.com/13145409/1969558