Comment 4 for bug 1832105

Thanks for the effort. I see effort for ceph v12. Notice that for disco:
ceph -v
ceph version 13.2.4 (b10be4d44915a4d78a8e06aa31919e74927b142e) mimic (stable)

with /etc/apt/sources.list.d empty and
/etc/apt/sources.list:

deb http://us.archive.ubuntu.com/ubuntu/ disco main restricted
deb http://us.archive.ubuntu.com/ubuntu/ disco-updates main restricted
deb http://us.archive.ubuntu.com/ubuntu/ disco universe
deb http://us.archive.ubuntu.com/ubuntu/ disco-updates universe
deb http://us.archive.ubuntu.com/ubuntu/ disco multiverse
deb http://us.archive.ubuntu.com/ubuntu/ disco-updates multiverse
deb http://security.ubuntu.com/ubuntu disco-security main restricted
deb http://security.ubuntu.com/ubuntu disco-security universe
deb http://security.ubuntu.com/ubuntu disco-security multiverse
deb http://us.archive.ubuntu.com/ubuntu/ disco-backports main restricted universe multiverse