Correct, there is no command to automatically sync the software for all
cluster instances.
If you installed the software directly on each host, then you can use
"pkg image-update" on each
host to update the software. If you used "install-node" to install the
software on each host,
then the "pkg" software isn't there so that will not work.
Note, the install-node --force command would update the software, but it
also deletes any
state (domain, instance, etc.) that is there, so don't do that unless
you want to recreate the
instances (which isn't difficult).
Tom