Troubleshooting Docker and Kubernetes Containers/

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Fixing Network-Related Errors

Fixing Network-Related Errors

Learn about the “network not found” errors and how to resolve them.

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Network-related errors refer to where Docker can’t find or access a specified network when trying to start a container or a service. This error occurs when Docker is unable to locate the network, either because it doesn’t exist or because there’s a misconfiguration that prevents the container or service from attaching to the desired network. The error message typically includes details about the network name or ID that Docker failed to find.

Inspecting network details

To get the details of a network, we create a network and, subsequently, inspect it. Here’s how we can do all of that (we call our network name bnet).

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# To create a network

docker network create bnet



# To confirm the network was created

docker network ls



# To inspect the network

docker network inspect bnet

Resolving network-related issues

  • Nonexistent network: This occurs when the specified network name or ID in the Docker command or configuration doesn’t match any existing network. We illustrate this with the example below, an nginx service making use of a bridge driver using a docker-compose.yaml file for its setup.

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version: "3.8"
services:
  myservice:
    image: nginx
    networks:
      - non-existent-network
networks:
  mynetwork:
    driver: bridge

When we run the docker-compose ...