Docker : Cannot connect to the Docker daemon. Is the docker daemon running on this host?

Question

I am new to the world Docker'm having trouble running the first time. The facility was quiet, however there trying to check existing container, it shows the following message:

Can not connect to the Docker daemon. Is the running daemon docker on this host?

I've done the start of the daemon to the test reported in the docker documentation I tested is normal and prowling, however to continue the steps displays the message reported above.

Answer 1

By default, the docker command runs for its own group or root users. Make sure you type prefix the command you're using with sudo . Alternatively, you can add your current user to the docker group by running sudo usermod -aG docker $USER .

Source: the official documentation .