Cloudera Search supports one instance of the Solr service on each host in a cluster. Using multiple Solr instances on a host is not supported.
Installing Search after Upgrading Cloudera Manager
If you have just upgraded Cloudera Manager from a version that did not support Search, the Search software is not installed automatically. (Upgrading Cloudera Manager does not automatically upgrade CDH or other managed services). You can add Search using parcels; go to the Hosts tab, and select the Parcels tab. You should see at least one Solr parcel available for download. See Parcels for detailed instructions on using parcels to install or upgrade Solr. If you do not see any Solr parcels available, click the Edit Settings button on the Parcels page to go to the Parcel configuration settings and verify that the Search parcel repo URL. The URL should point to the subdirectory of https://archive.cloudera.com/cdh5/parcels/ that corresponds to the release configured in the Parcels configuration page. See Parcel Configuration Settings for more details.