docker ce couldn't connect to docker daemon. you might need to start docker for mac.

First, permission was not set for the docker-client on docker.sock You can set it using sudo usermod -aG docker $USER.The problem was in sockets allocated to docker-daemon and docker-client. $> sudo usermod -aG docker The docker daemon needs to be started $> sudo service docker start You can set the daemon to start at boot $> sudo chkconfig docker on You can verify the docker service is running $> service docker status And one last final check $> docker run hello-world. On Fedora 22 Installing Docker: $> curl -fsSL sh After installing Docker: A user needs to be added to the docker group. What could be the problem here? After doing some research into solving this problem on my Linux system I thought I would write this answer. Is the docker daemon running on this host? I am running the, that is, I haven't changed any /etc files relating to this service. rvice - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/rvice enabled vendor preset: disabled) Active: active (running) since Mon 19:20:50 GMT 3 days ago Docs: Main PID: 1015 (docker) CGroup: /system.slice/rvice └─1015 /usr/bin/docker daemon -H fd:// -exec-opt native.cgroupdriver=cgroupfs $ ps wuf -u root grep $(which docker) root 1015 0.0 0.3 42? Ssl 2015 2:26 /usr/bin/docker daemon -H fd:// -exec-opt native.cgroupdriver=cgroupfs However, Docker itself refuses to talk to it: $ docker info Cannot connect to the Docker daemon.The Docker service is clearly running: $ systemctl status rvice This in itself would have required multiple programs ( chkconfig etc) to query. Docker installed, preferably the latest Verifying the Status and Health of the Docker Daemon The systemctl status command provides not only information about whether the service / process is running ( active), but also whether it is enabled to start at boot of the machine.More details than docker -v)? – Rick Apr 29 '16 at 11:21 Can you verify that using systemctl or whatever service manager you're using?

What do you get when you execute docker version (that also lists the daemon version, i.e. Which is very confusing because all the documentation says that boot2docker is deprecated. Now when I run docker-compose up I get Couldn't connect to Docker daemon - you might need to runboot2docker up.

For the most part this should not be any different from how systemd would interact with any service. The following explains how systemd can be used with the Docker daemon. Also, systemd is easily configurable through what are known as systemd unit files. One of the nice things about systemd is that it is a single command that can be used to manage almost all aspects of a process. If you're using a somewhat modern Linux system (RHEL 7.x, SuSE 12, Ubuntu 15, etc), then you will encounter systemd. Systemd provides a standard process for controlling programs / processes on Linux hosts.

Docker ce couldn't connect to docker daemon. you might need to start docker for mac.