Linux Docker issue - "Couldn't connect to Docker daemon at http+docker://localhost"

[lpatmo]

@peoray is running into this after installing Docker on Linux:

Step 1: https://docs.docker.com/engine/install/ubuntu/
Step 2: https://docs.docker.com/compose/install/

The error:

[lpatmo]

I am reading through docker/compose#4181 and... maybe service docker restart can help?

[lpatmo]

@peoray is now getting this error:

[lpatmo]

This is after @peoray ran export DOCKER_HOST=127.0.0.1

[BethanyG]

Ok - so it smells like a permissions problem. Below are several SO posts, et. al. While they talk about docker.sock, methinks this error might be related:

• Medium: Couldn't Connect Docker
• SO: Couldn't Connect to docker from docker-compose
• SO: Couldn't Connect Docker
• GitHub Couldn't Connect Docker

All of them talk about the perils of running docker-compose with sudo. They also talk about making sure docker has permissions to everywhere it should...and to have env vars set properly. Since I am not on linux, I can't test each specifically, but I'd do a general rundown of permissions and env vars just to make sure they are all as expected.

[peoray]

Thank you Bethany. Your guess was right, it was a permission issue. Had to sudo to the command to get it working :)

[BethanyG]

So happy you got the problem solved! YAY!