Configure the URL to connect to Apache Solr in property solr.url, for example:

solr.url=http://localhost:40080/solr

You can also configure multiple comma-separated URLs in this property if you want to use multiple Solr follower nodes for failover and simple load balancing.

For SolrCloud, do not configure property solr.url but set solr.cloud=true and the ZooKeeper address(es) instead as in the following example:

solr.cloud=true
solr.zookeeper.addresses=zookeeper1:2181,zookeeper2:2181,zookeeper3:2181

If Apache Solr has been secured and needs HTTP Basic authentication, you must also configure the required user name and password in the properties solr.username and solr.password.