Add a command for getting Failover Cluster Instance Diagnostics Logs

[ReeceGoding]

Summarize Command's Functionality

There are plenty of ways to get Failover Cluster Instance Diagnostics Logs, also known as the "SQLDIAG log file". But as far as I can tell, dbatools provides no way to get them. This puzzles me, since I'm pretty sure that they're useful for both AGs and FCIs.

I skimmed over the chapter in Learn Dbatools in a Month of Lunches a while ago and I'm pretty sure that didn't have an answer. It suggested this, which turns out to be evidence of there not being an answer.

Is there a command that is similiar or close to what you are looking for?

No

Technical Details

I have nothing more to add than what I already have. I'm out of my depth here and have no home lab for this, so I can't contribute much.

[niphlod]

Extended events are already "in" with all the (not really always working out of the box) "-Xe" functions.

Are you proposing something that points specifically to some particular FCI log ?

[ReeceGoding]

Are you proposing something that points specifically to some particular FCI log ?

I am. I don't think that it's commonly known that you can grab it with the XE functions.

[niphlod]

TBF I don't think I ever saw anyone else asking so you may need to account for your own bias.
So all that is needed is an example on the (I assume) Export-DbaXe ?

Or you're asking for a "thingy" that gets you the path to the xel, aka "sqldiag" file ?

[ReeceGoding]

An example would be the bare minimum. What I'd really like is a Get-DbaWsfc[...] command, but I can understand why we wouldn't want to write what is nothing more than a wrapper for what we already have.