juju cache to different folder

Question

I am writing a juju charm for a project and I would like to test and debug locally.

I have a somewhat small SSD drive which I have my OS installed on and my home folder on the larger non SSD drive. Juju is caching a lot of stuff to the SSD drive and I would like to cache to the other drive.

I tried using a symlink

    ln -s ~/juju/cache /var/cache/lxc

But I still get an OS warning after a while saying I am running out of disk space.

Could someone help me get juju to cache somewhere where it will not fill my SSD drive?

Answer 1

You need to reverse the command, you are now creating a sym link from ~/juju/cache in to /var/cache/lxc.

Try ln -s /var/cache/lxc ~/juju/cache instead.

Answer 2

It may not be cache, but the actual containers themselves. Installed fully, they'll each take 800MB - 1GB at least. So be mindful of that.

Also, the local provider enforces use of apt-cacher-ng for package downloads, so you may also have lots of debs in /var/cache/apt-cacher-ng

A useful command to figure out whats using all the space under a certain dir is:

du -m --max-depth=1 | sort -rn | head -10

That will give you the top 10 users of space (in MB) under the current directory.