[root@sandbox-hdp tmp]#  ambari-server install-mpack \ --mpack=http://public-repo-1.hortonworks.com/HDF/centos7/3.x/updates/3.0.1.1/tars/hdf_ambari_mp/hdf-ambari-mpack-3.0.1.1-5.tar.gz --verbose
Using python  /usr/bin/python
Installing management pack
INFO: Loading properties from /etc/ambari-server/conf/ambari.properties
INFO: Installing management pack http://public-repo-1.hortonworks.com/HDF/centos7/3.x/updates/3.0.1.1/tars/hdf_ambari_mp/hdf-ambari-mpack-3.0.1.1-5.tar.gz
INFO: Loading properties from /etc/ambari-server/conf/ambari.properties
INFO: Download management pack to temp location /var/lib/ambari-server/data/tmp/hdf-ambari-mpack-3.0.1.1-5.tar.gz
INFO: Trying to download http://public-repo-1.hortonworks.com/HDF/centos7/3.x/updates/3.0.1.1/tars/hdf_ambari_mp/hdf-ambari-mpack-3.0.1.1-5.tar.gz to /var/lib/ambari-server/data/tmp/hdf-ambari-mpack-3.0.1.1-5.tar.gz with python lib [urllib2].
INFO: Downloading to: /var/lib/ambari-server/data/tmp/hdf-ambari-mpack-3.0.1.1-5.tar.gz Bytes: 56289458

INFO: Finished downloading http://public-repo-1.hortonworks.com/HDF/centos7/3.x/updates/3.0.1.1/tars/hdf_ambari_mp/hdf-ambari-mpack-3.0.1.1-5.tar.gz to /var/lib/ambari-server/data/tmp/hdf-ambari-mpack-3.0.1.1-5.tar.gz
INFO: Loading properties from /etc/ambari-server/conf/ambari.properties
INFO: Expand management pack at temp location /var/lib/ambari-server/data/tmp/hdf-ambari-mpack-3.0.1.1-5/
INFO: Loading properties from /etc/ambari-server/conf/ambari.properties
INFO: Loading properties from /etc/ambari-server/conf/ambari.properties
INFO: Stage management pack hdf-ambari-mpack-3.0.1.1-5 to staging location /var/lib/ambari-server/resources/mpacks/hdf-ambari-mpack-3.0.1.1-5
ERROR: Management pack hdf-ambari-mpack-3.0.1.1-5 already installed!
ERROR: Exiting with exit code -1.
REASON: Management pack hdf-ambari-mpack-3.0.1.1-5 already installed!