[Incident] Docker containers IP addresses conflict with VPN

[ajesteves]

Description

I have a problem with the atlas-ce-* docker containers. These container use an IP range 172.20.* that conflicts with my work VPN addresses.

Error

With these containers running i cann't connect from home to the machine where atlas is installed using VPN.

Steps to reproduce

Has this issue been seen before?

Cause of issue

The problem is due to a network interface created by atlas-ce: br-xxxxxx that uses the same IP range as my work VPN.

Link to BUG

Solution

Configure atlas-ce docker containers to use a different IP range.

[amackillop]

Thanks for pointing this out. IP ranges are configurable in docker so we should be able to give users the option to manually set this in case of conflicts.

[ajesteves]

Hello,
Do you know how can i solve the problem now? Remove atlas-ce containers? Remove containers and wait for new docker images that can be configured?
Thanks for your attention.

[amackillop]

The docker network is created when you run atlas-server start. The script that gets run is here: https://github.com/dessa-oss/atlas/blob/master/atlas_server/src/atlas-server/__main__.py and on line 244 is where the network is created.

You can try editing the installed version of this file and add an ip range to that command. The file should be located in the site-packages directory of your wherever your virtual environment for python is located.

[amackillop]

This may be useful: https://docker-py.readthedocs.io/en/stable/api.html#docker.types.IPAMConfig

[ajesteves]

So, you suggest to add to the mentioned file (main.py) the following code, after installing atlas and before starting the server?
...
ipam_pool = docker.types.IPAMPool(subnet='172.25.0.0/24', gateway='192.168.85.254')
ipam_config = docker.types.IPAMConfig(pool_configs=[ipam_pool])
self.class._network = self._client.networks.create (
self.class._network_name,
driver="bridge",
ipam=ipam_config
)
...

[amackillop]

Yes I would give that a try just make sure that you are editing the correct file that will be executed by atlas-server. Let me know how it goes!

[ajesteves]

Hi again,
I will try another day since the installer is not working.
It tries to download atlas version 0.1.1.dev3 that is not available on github.

[mohammedri]

Hey @ajesteves , thanks for pointing out the bug in the installer. @amackillop has fixed it in #114

Can you try again?

[ajesteves]

Sure, i will try.
Thanks

[amackillop]

You should be able to edit the current installer file as well and just remove the .dev3 part from the build_version if you don't want to wait for a release.

[mohammedri]

@ajesteves we just pushed a new version of the installer, so you should be able to use that.
I hope your docker question was answered above.

Cheers