Welcome to the forum @jpb.
Can you contact the master’s command_core port from the worker:
curl <master fqdn>:<master port + 2>
?
Not necessarily, but you need to consider that, once you successfully “shared” the worker between the instances, the CryoSPARC builtin scheduler of one “sharing” instance would not be aware of any workloads from the CryoSPARC builtin scheduler of another “sharing” instance. This limitation can be overcome by connecting both CryoSPARC instances to a common, external cluster workload manager.
In addition to the version, installed patches must also match between master and worker.
Possible solutions to the license id match requirement are discussed in Licence key mismatch - #4 by wtempel.