When deploying Bitbucket and Confluence Data Center on AWS EC2 nodes in clustering mode, there were errors with node discovery when trying to require IMDSv2 on the nodes, since IMDSv2 was not supported at the time:

https://jira.atlassian.com/browse/CONFSERVER-63193?src=confmacro

https://jira.atlassian.com/browse/BSERV-13092

It does not appear this affects Jira (as of testing on 9.4.11) as it seems to use a different node discovery mechanism than hazelcast, but it would help to confirm if this is true and whether AWS IMDSv2 is supported, and document it if so.