gefyra list --containers fails with "Error: list index out of range"

[crkurz]

What happened?

gefyra list --containers fails with Error: list index out of range when there are there are other containers with names starting with same name as gefyra container

What did you expect to happen?

.

Please provide the output of gefyra check.

.

How can we reproduce it (as minimally and precisely as possible)?

1. gefyra run --name abc
2. gefyra list --containers works fine
3. docker run --name abc-nginx-5005 (please note that docker container name starts with abc)
4. gefyra list --containers fails with Error: list index out of range

Note from Michael: identification of gyfyra containers should be based on tags (not on based on container name)

What Kubernetes setup are you working with?

$ kubectl version
# paste output here

OS version

# On Linux:
$ cat /etc/os-release
# paste output here
$ uname -a
# paste output here

# On Windows:
C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
# paste output here

Anything else we need to know?

No response

[crkurz]

Issue seems to be in get_all_containers in local/bridge.py, which collects all containers attached to Gefyra network:
gefyra_net = config.DOCKER.networks.get(f"{config.NETWORK_NAME}")
For some reason non-gefyra containers get considered here and these do not necessarily have DnsSearch details.

[crkurz]

The issue occurs when other containers (not started by Gefyra) are using the gefyra network. Such containers way not necessarily have the expected extra metadata (DnsSearch).

Depending on which list of containers get_all_containers in local/bridge.py is expected to return (only gefyra-started containers or all containers using the Gefyra network) the solution may be either of the two below:

• identify Gefyra Containers by some flag (and not based on network attachment)
• more defensive implementation: tolerate missing DnsSearch