cluster.properties file example (specifically ehcache.peer.discovery)?

[Kevin Christmann]

We recently upgraded our JIRA instance to the Data Center version, which of course requires the cluster.properties file for each node. I want to add the ehcache.peer.discovery file parameter to it but it isn't clear to me how to add it per this link. The link seems to show two options "default" and "automatic" and I can't seem to get default to work.

Does anybody have an example of a cluster.properties file that includes that parameter?

[Volodymyr Krupach]

Did you open port 40001 as described in Security paragraph?