Hello! There is no master - slave in SolrCloud. You can create a collection that has only a single shard and have one replica. When you send an indexing request it will be forwarded to the leader shard (in your case you want it to be the instance running on 8080), however both Solr instances will accept indexing requests.
-- Regards, Rafał Kuć Sematext :: http://sematext.com/ :: Solr - Lucene - ElasticSearch > I have a requirement to set solrcloud with 2 instances of Solr( one on 8080 > and otehr on 9090 ports respectivey) and a Zookeeper ensembe( 3 modes). > Can I have one solr instance as a Master and the other as a replcia of the > Master. > Because, when i set up a solrcloud and index to one of the solr running on > 8080, it automatically routes to 9090 solr also. > I need indexing only on 8080 and 9090 solr should be a replica of 8080solr. > Is this possible in Cloud.' > Pls guide me.