Docker.errors.dockerexception: Error while fetching server API version
To resolve docker.errors.DockerException ensure the Docker is running:
# If it ain't running, you ain't going anywhere
sudo systemctl start docker
For permission woes, add your user to the Docker group:
# Fear not, I will add you to the cool kids club!
sudo usermod -aG docker $USER
(This will require you to logout and login again). With a hotter-than-the-sun custom Docker socket, set DOCKER_HOST:
# Turn that socket into an inferno!
export DOCKER_HOST=unix:///custom/docker.sock
Are You Daemon’s Favorite?
Checking the Status
Make sure that your Docker daemon is active and not throwing a daemon doesn't give a damn fit.
# 'Cuz if the devil's busy, we're in trouble!
systemctl status docker
If the daemon is chilling out and not running, command it to serve you:
# In the game of daemons, you either run or you die. There's no middle ground.
sudo systemctl start docker
Fixing Permission Issues
Permission issues with docker.sock could play a role. Feel free to remind it who the boss is:
# "I'm the captain now!" -The User, probably
sudo chown $USER /var/run/docker.sock
Let’s patch things up by restarting the Docker service:
# Rebooting...because turning it off and on again always helps!
sudo service docker restart
Compatibilities and Incompatibilities
OS and Docker Compatibility
Stand eye-to-eye with your OS. Would it befriend Docker or kick it out of the party?
Updating Docker
Consider updating Docker. Not only will it handle your compatibility issues, but also ensure that your Docker is as fast as a cheetah and as safe as a bank vault.
Dealing with Windows
To my Windows peeps, remember to enable Docker Desktop's WSL Integration. Verify Docker plays nice with your specific distribution in your WSL settings.
User Group Management
Adding User to Docker Group
Maybe Inviting your user to the Docker group will cheer things up! But don't forget to logout and login again.
# Welcome aboard, matey!
sudo usermod -aG docker $USER
Refreshing Permissions
Changes to the user group requires a service restart to refresh permissions:
# Out with the old, in with the new
sudo service docker restart
Troubleshoot Connectivity
Connection Trouble
Investigate network connectivity issues between Docker and the API.
Checking Logs
Extract valuable information by diving into Docker logs:
# Spilling the secrets
docker logs [container_id]
Plan B
If the traditional methods are not working, it’s time to get creative! Look for other ways like switching port or socket.
Advanced Tactics
Volume & Mount Checks
Review the volume and mount setup.
Firewall Settings
Double-check your firewall settings.
Docker Reinstallation
When things don’t seem to work, start fresh! Delete Docker and install it again.
# Out with the old, in with the...also old but new to you
sudo apt-get remove docker docker-engine docker.io containerd runc
sudo apt-get install docker-ce docker-ce-cli containerd.io
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