How to add new node to existing cluster

We’ve got a 3 node cluster (currently and I need to add a 4th. I’ve searched the site here and googled it as well, but I can’t seem to find any step by step on how to add a new node. The reason I am asking is that I’ve never added a new node to a MySQL cluster before (have on Oracle, but 5+ years ago) and the cluster we have is in production and I don’t want to b0rk anything while trying to figure it out. This is a plain-jane cluster of 3 nodes, nothing special, I followed the installation/Configuration instructions directly.

Can someone send me a link to how to do this? Or maybe post a Fisher-Price version?

Hi have you find the step to do adding new node to existing cluster? I have the same problem here maybe you can help. Thanks a lot

If we are talking about PXC cluster, that should help: