Docker can t connect to docker daemon

Question

After I update my Docker version to 0.8.0, I get an error message while entering sudo docker version:

Client version: 0.8.0
Go version (client): go1.2
Git commit (client): cc3a8c8
2014/02/19 12:54:16 Can't connect to docker daemon. Is 'docker -d'

Answer 1

The Post-installation steps for Linux documentation reveals the following steps:

1.      Create the docker group.

sudo groupadd docker

2.      Add the user to the docker group.

sudo usermod -aG docker $(whoami)

3.      Log out and log back in to ensure docker runs with correct permissions.

4.      Start docker.

sudo service docker start