Are you getting error creating default bridge network when you run Docker?

Docker is a containerization platform that is used to create and run the containers.

At Bobcares, we often get requests on Docker errors, as a part of our Docker Hosting Support.

Today, we’ll see how our Support Engineers fix this Docker error for our customers.

Explore more about Docker

Docker is a tool that is designed to benefit both developers and system administrators. It is a containerization platform that packages applications and all its dependencies together form a container.

And containers are those which help modularize services/applications. It is a package of all our code and its dependencies. So, it runs faster and is more reliable when used on different platforms.

But we encounter many errors while dealing with docker. Today, let’s see how our Engineers are going to fix this error related to Docker.

How we fix Docker error creating default bridge network?

Recently, one of our customers approached us with an error message ‘Error creating default \”bridge\” network: cannot create network‘.

Our Support Engineers found that the customer is facing the issue due to a change in data structures in network code. This occurred while he upgrading the OS.

So, our Engineers deleted the network and started the docker.

This fixed the problem.

In another case, we went through the same process. But it still the error was persisting. So we deleted all the sockets and interface.

rm -rf /var/docker/network/*
mkdir /var/docker/network/files

Then we started the docker using the command,

systemctl start docker

But the containers refused to work since their sockets are gone. So we deleted all the containers by running the command,

docker ps -a | cut -d' ' -f 1 | xargs -n 1 echo docker rm -f

And then we recreated them.

Finally, this fixed the error.

Note: Here, it was stateless containers, and we confirmed with the customer before deleting the containers.

Also, the fix may vary depending on the scenario.

[Need any assistance in fixing Docker errors? – We can help you]

Conclusion

In short, when dealing with Docker we may encounter error creating default bridge network. This mainly occurs due to a change in data structures in network code. Also, we saw how our Support Engineers fix this for our customers.