linux安装rabbitmq，报如下错误？

Question

[root@sw-centosrabbitmq]#rpm--importhttps://www.rabbitmq.com/rabbitmq-signing-key-public.asc[root@sw-centosrabbitmq]#yuminstallrabbitmq-server-3.6.6-1.el7.noarch.rpmLoadedplugins:fastestmirror,securityLoadingmirrorspeedsfromcachedhostfileSettingupInstallProcessExaminingrabbitmq-server-3.6.6-1.el7.noarch.rpm:rabbitmq-server-3.6.6-1.el7.noarchMarkingrabbitmq-server-3.6.6-1.el7.noarch.rpmtobeinstalledResolvingDependencies-->Runningtransactioncheck--->Packagerabbitmq-server.noarch0:3.6.6-1.el7willbeinstalled-->ProcessingDependency:socatforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->Runningtransactioncheck--->Packagerabbitmq-server.noarch0:3.6.6-1.el7willbeinstalled-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch--->Packagesocat.i6860:1.7.2.3-1.el6willbeinstalled-->ProcessingDependency:libreadline.so.5forpackage:socat-1.7.2.3-1.el6.i686-->Runningtransactioncheck--->Packagecompat-readline5.i6860:5.2-17.1.el6willbeinstalled--->Packagerabbitmq-server.noarch0:3.6.6-1.el7willbeinstalled-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->ProcessingDependency:systemdforpackage:rabbitmq-server-3.6.6-1.el7.noarch-->FinishedDependencyResolutionError:Package:rabbitmq-server-3.6.6-1.el7.noarch(/rabbitmq-server-3.6.6-1.el7.noarch)Requires:systemdYoucouldtryusing--skip-brokentoworkaroundtheproblem**Found3pre-existingrpmdbproblem(s),'yumcheck'outputfollows:2:postfix-2.6.6-2.2.el6_1.i686hasmissingrequiresoflibmysqlclient.so.162:postfix-2.6.6-2.2.el6_1.i686hasmissingrequiresoflibmysqlclient.so.16(libmysqlclient_16)2:postfix-2.6.6-2.2.el6_1.i686hasmissingrequiresofmysql-libs[root@sw-centosrabbitmq]#