How do I make custom NFS exports this permanent?

[kourindouhime]

Hi, I'm here with an old problem, which you've marked as "won't fix". The problem is related to some of the docker images like postgresql, which can't run with a volume attached, because of unable to change permissions for data files problem.

d1cf4d9

^ I took a look on this commit, so I decided to replace exports options in ~/.dinghy/machine-nfs-exports-dinghy with
192.168.99.100(rw,no_root_squash)

and restarted nfs manually:

sudo /usr/local/sbin/unfsd -e /Users/danst/.dinghy/machine-nfs-exports-dinghy -n 19888 -m 19888 -l 192.168.99.1 -p -d

Tried running postgresql container and it was OK. It changed permissions to data folder, I can't access it with my usual user, but I can with root and I'm totally okay with it.

BUT if I do

dinghy restart

then somewhere on "Starting NFS daemon, this will require sudo" step, my "~/.dinghy/machine-nfs-exports-dinghy" file gets updated with rw,all_squash,anonuid=501,anongid=20.

How can I prevent this happening? Thank you.

[codekitchen]

It'll require a code change, I'm open to a PR that makes this a configurable option

[alexvb]

@codekitchen A feature called user namespaces has landed in the new docker release. Maybe it could be useful to get around all these ownership problems.

[codekitchen]

Yep! We've been following the development of user namespaces support for a long time hoping it'll be the true solution. There's still a lot of things to figure out though. Ideally I'd love to see the user in containers such as postgres mapped to the uid/gid of the OSX host user.

I haven't had a chance to dig in to the finalized feature yet, if you'd like to see what can be done with this first release that'd be awesome.

[kourindouhime]

Alright, I've solved this with a horrible workaround:

75c75
<     #File.open(exports_filename, 'wb') { |f| f.write exports_body }
---
>     File.open(exports_filename, 'wb') { |f| f.write exports_body }

[codekitchen]

A PR for this was merged a while back, I'm going to close this: #170