Comment 3 for bug 1878548

> I could not reproduce. An isolated remote node fails its crm_mon invocation and prevents hostmonitor from acting at all.

You need to install crmsh on the remote node.
If crmsh is installed on the remote node, hostmonitor can execute the crm_mon command and monitor each remote node's status.
Then, I think you can reproduce this issue.
Please let me know your opinion on this.