cloudera distribution is using cloudera manager for its automated installation and maintenance activities in a cluster like that Horton works distribution is using Ambari for same purpose in windows,can anyone tell what is the tool that Apache distribution is using for easy cluster installation and maintenance?
As you have mentioned Cloudera Manager and Ambari provides 2 types of services, installation and then monitoring.
Ambari is open source apache project. Hortonworks provides support and services using their distribution.
You can also use puppet/chef for installation and use Ganglia for monitoring. Ambari internally uses those tools only.