In a single-host deployment, you install all the MDM Hub components on a single host machine. For search, you must configure the Process Server to function as the ZooKeeper and Solr servers.
The following image shows an example deployment that has a single host machine configured for search:
The host machine contains an application server and a database server. On the application server, you have the Hub Server, a cleanse server, and a Process Server. The Process Server functions as the ZooKeeper and Solr servers. The database server contains a master database and an ORS database.