In the NSO universe there a number of heroes and just a few villains. The clear uber-hero is FastMap, the one algorithm to diff them all. Other demi-heroes include Yang, Nanoservices, and Netsim. Most villains are vanquished quickly, just a rel...
I'm actually working through the process to contribute some playbooks to DevNet. In the meantime, this is the link: GitHub - sbarvick-dd/nso-ansible-ops: A collection of Ansible playbooks for managing Cisco NSO installations
The ncs-java-vm.log often has the answer too (if the memory issue is not it). It could also be the packages compiled under a new JDK version or dependent libraries that weren't in the packages or packages that were not actually compiled.