@Jal_963, In principle: you can generate CSRs from the Active Node in HA, Passive Node in HA, or from both - does not matter because they are synced, just have to time and queue the Commits right; you can generate CSRs using external tool, I like working with XCA (https://hohnstaedt.de/xca/), and import them into PA after signing; you can specify Common Name and Subject Alternative Name to whatever you want, however using the hostname/FQDN makes most sense most of the time as those correspond to the WebUI URL; best practice is to have both Common Name and Subject Alternative Name with equal values; you possibly could use one certificate for WebUI of both HA nodes, however it would require some trickery; Certificates and SSL/TLS Service Profiles are synced in HA as long as they are not used for WebUI. More to the point, workflow could be: Login into Active Node; prepare two CSRs with CN/SAN corresponding to the WebUI URLs on Active Node; import signed by external CA certificates into Active Node; Commit on Active Node; create two SSL/TLS Service Profiles, one for each certificate; use one of the SSL/TLS Service Profiles as WebUI SSL/TLS Service Profile on Active Node; Commit on Active Node; Login into Passive Node; use one of the SSL/TLS Service Profiles as WebUI SSL/TLS Service Profile on Passive Node; Commit on Passive Node; It is possible to perform it a bit quicker, but longer way is simpler.
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