CODEWITHSUNDEEP
dockernetwork-programmingdocker-compose
DaiShogun
DaiShogun

Reputation: 20

Inconsistent networking in docker container

I have dockerized a flask app inside a docker container using docker on windows and i'm running the containers in debian wsl2. i need to send requests from this container to an outside api but i get this error:

(Caused by NewConnectionError('<urllib3.connection.HTTPSConnection object at 0x7f19fa4207f0>: Failed to establish a new connection: [Errno -5] No address associated with hostname')

but i can access the website in my browser and i can access it in wsl. and requests to other apis work without any problems. also I'm using the default networking in docker.

Upvotes: 0

Views: 193

Answers (1)

Antonio Petricca
Antonio Petricca

Reputation: 11026

I suppose by your description of the issue that you have to retrieve the right IP address of the container host.

At this link I described the approach to accomplish this:

1. Retrieve the IP by:

IP_ADDRESS=$(ip addr show | grep "\binet\b.*\bdocker0\b" | awk '{print $2}' | cut -d '/' -f 1)

2. Assign it inside docker-compose YAML

extra_hosts:
      docker.host: ${IP_ADDRESS}

3. Pass it to docker compose by the following trick

IP_ADDRESS=${IP_ADDRESS} docker-compose <YOUR_BUILDING_ARGUMENTS>

Upvotes: 1

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