Troubleshooting of docker errors

Troubleshooting of docker errors

General Troubleshooting Steps of Docker Errors

Viewing Docker Logs

Enter the following command

tail /home/dockerd.log

Or the see the log of specific container ID

docker logs <Container ID>

# OR enter the following command which the log was updated automatically
docker logs -f --details <Container ID>

Useful Tools

• Dockerfile Linter

Common Error Solutions

Error: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

Error condition: After I inputted the command docker ps, I met the error message as follows:

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? 

Solution:

• On CentOS: sudo systemctl start docker

Error response from daemon: dial unix docker.raw.sock: connect: connection refused (on Mac)

Error condition: After I inputted the command docker ps, I met the error message as follows:

Error response from daemon: dial unix docker.raw.sock: connect: connection refused

Solution: Make sure the docker is running. After docker was lunched, the result of command docker ps should be:

CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

Error response from docker desktop: credential when tried to docker push

Solution: Login the account of docker hub

Error response from docker desktop: denied: requested access to the resource is denied when tried to docker push

Solution: Add tag to the docker image you want to publish

docker tag <IMAGE ID> <ACCOUNT NAME>/<NAME>:<TAG>

References

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Template

• Bug report template