While installing Juno got the following error:

192.168.x.x_mongodb.pp:                        [ ERROR ]
Applying Puppet manifests                         [ ERROR ]

ERROR : Error appeared during Puppet run: 192.168.x.x_mongodb.pp
Error: Execution of '/usr/bin/yum -d 0 -e 0 -y install mongodb-server' returned 1: Error: Package: gperftools-libs-2.4-5.el7.x86_64 (epel)
You will find full trace in log /var/tmp/packstack/20151208-015615-CddW0h/manifests/192.168.24.211_mongodb.pp.log