Increasing DFINITY Node Count and NNS Topology Exception

[sat]

Related forum discussion:

Subnet Management - qxesv (Application)

This one is tricky. DFINITY has 42 nodes in total, and there are 37 subnets. In the NNS subnet we have 3 of our nodes, so that already puts us into 39 nodes used at all times. There are only 3 spare nodes. There is 1 degraded node in Stockholm that we have to look into, and there are 3 nodes in zh2 that we started redeploying as a part of maintenance (switch to a new HSM-less node operator), but we can’t complete the node redeployment because we the 2 “unused” zh2 nodes have already been added…