What steps to take to resize an existing MYSQL NDB Cluster? I have an existing NDB Cluster. It's grown larger than I expected and I need to make it bigger. When I ask the management console for the ALL REPORT MEMORY, it looks like the datamemory is 65% full. However, I get page faults, swap, and memory related issues.

How do I find what my correct settings for data-memory, index-memory and any other related parameters should be?

Is ndb_size.pl the correct script to run?
Since your data nodes are up and running you can check the
size of the virtual memory allocated to the data node. If
this is bigger than 80-90% of your available memory you will
experience issues like you describe.