[root@yz219 ~]# vim /etc/yum.repos.d/ambari.repo
#VERSION_NUMBER=2.7.4.0--120
[ambari-2.7.4.0-120]
name=ambary Version - ambari-2.7.4.0-120
baseurl=http://127.0.0.1/repo/ambari/centos7/
gpgcheck=0
gpgkey=http://127.0.0.1/repo/ambari/centos7/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins
enabled=1