Let's assume that we have a cluster of four nodes, but we are sure that we will have eight nodes in the near future. We want to be prepared for this, so when the new nodes are installed, we don't need to split collection shards or reindex the data. By default, Solr won't allow you to do that, but this recipe will show you how to achieve such a setup.
Before reading further, I would suggest you all to read the Creating a new SolrCloud cluster recipe in this chapter. This recipe will show you how to create a new SolrCloud cluster. We also assume that ZooKeeper is running on 192.168.1.10 and is listening on port 2181 and that we already have four SolrCloud nodes running as a cluster.