Adding Node to Vertica Cluster
We have Vertica 9.2 installed on 3 nodes in a cluster. Now, we are trying to expand the cluster by adding a new (1) node.I am following documentation provided under https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/AdministratorsGuide/ManageNodes/AddingNodes.htm link; however, wonder if anyone has any documentation that would explicitly list each step involved and possible risks involved.
This is my first time installing vertica, so I am a bit unclear with step 2 where it states that 'before installing vertica on new node' we need to update hosts configuration file on all existing nodes in a cluster. Can this be done after Vertica is installed on new node? The node has not yet been added to cluster and /or database, so what could be wrong if Vertica is installed on the new node prior to updating hosts on other nodes in cluster?
Has anyone experienced any issues during adding a node? How long does this process take? What if something goes wrong? Is Vertica going to revert itself to the old (before) structure or there are some additional steps to be done.
If all goes well, are there any additional step to optimize Vertica and verify that new node is working?
Thanks for sharing!