/usr/lib/sysctl.d/juju-2.0.conf is in juju-2.0 2.0.2-0ubuntu0.16.04.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | fs.inotify.max_user_watches = 524288
fs.inotify.max_user_instances = 256
|