Solution: Resolving Docker Container Networking Errors
Explore methods to diagnose and resolve common Docker container networking errors, including container communication issues, DNS configuration fixes, and Docker Compose network driver errors. Learn commands for managing container networks and updating Docker Compose files to ensure seamless network connectivity within your Docker environment.
Problem 1: Resolving driver and container networking issues
From the setup, communication only exists between container1 and container2. To communicate between other containers like container2 and container3, we use the following command:
docker exec -it container2 ping container3
We get the following output, which indicates that there’s no network communication between both containers:
ping: bad address 'container3'
The first step to fix this issue is identifying containers that are connected to our network. We use the following command for that:
docker network inspect --format='{{range .Containers}}{{.Name}} {{end}}' mynetwork
mynetwork refers to our network, and we can confirm that only container1 and container2 can communicate with each other. To fix this issue, we connect container3 and ...