pgBackRest backup from standby

[Don Seiler <don@xxxxxxxxx>]

Evening all.

Looking to use pgBackRest to take a backup from a hot standby. I'm reading that pgBackRest still needs to connect to the primary and copy some files. My questions are:

1. What files does it need to copy? Config files? WAL files?
2. How does it connect? SSH?
3. Does pgBackRest need to be installed and configured on the primary as well?

Thanks,

Don.

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Don Seiler
www.seiler.us