It appears that the various packages for Percona Server for MySQL (percona-server-*-5.7 and libperconaserverclient20) are missing from the Debian Stretch APT repositories.
I’ve followed the instructions in the install documentation ([URL]https://www.percona.com/doc/percona-server/5.7/installation/apt_repo.html[/URL]) to the letter, this has previously worked fine…
This repo (and others) appear to have been updated on 09-May-2019 20:17, the Packages file no longer lists the various server/client packages.
Did I miss something or was the repository updated incorrectly?