Hi Team, I am trying to add one manager in Docker swarm. ++ /usr/bin/docker ps -aq -filter ancestor=myapache_imageCannot connect to the Docker daemon. Is the docker daemon running on this host?Docker: "stop" requires a minimum of 1 argument.See '/usr/bin/docker-current stop -help'.Edit the following file : vi /usr/lib/systemd/system/docker.serviceAnd edit this rule to expose the API : ExecStart=/usr/bin/docker daemon -H unix:// -H tcp://localhost:2375Now it's time to reload and restart your Docker daemon:Then I restarted jenkins and I was able to perform docker commands as jenkins user in my jenkins jobs=> $ /bin/sh -xe /tmp/hudson6409609007865461459.sh86ed79e70f88 $ /bin/sh -xe /tmp/hudson3750921594572949914.sh+ /usr/bin/docker build -t myapache_image. Ssl 2015 2:26 /usr/bin/docker daemon -H fd:// -exec-opt native.cgroupdrivercgroupfs However, Docker itself refuses to talk to it: docker info Cannot connect to the Docker daemon. Is the docker daemon running on this host I am running the default Docker configuration, that is, I haven't changed any /etc files relating to this service.Would like to share the my experience, I had also encounter the same error while jenkins trigger build jobs, in order to overcome this issue tried the below mentioned solutions & its work for me.docker run hello-world docker: Cannot connect to the Docker daemon at.Using service docker start then allowed me to run the info command. I noticed this while trying to run the docker info command and getting an error about docker not running. Matteo sudo docker-compose upHere is the operation made as root root docker-compose upRoot is the result of docker info root docker infoAn error occurred trying to connect: Get read unix read: connection reset by does not work but sudo service docker start works as expected matteo sudo dockerdINFO libcontainerd: new containerd process, pid: 4039WARN containerd: low RLIMIT_NOFILE changing to max current=1024 max=4096INFO using prior storage driver "aufs"FATA Error starting daemon: layer does not & Sorry for being lateI have the same problem as the original poster, and have tried all the suggested things above.It seems that sometimes docker "dies" and is not running, and at other times it stays running.
Docker Cannot Connect To The Docker Daemon Code Which OutputsCom:5000/analytics/lddscouchdb:2.1.8c.109Pulling ldds-web (isl-dsdc.ca.com:5000/analytics/lddscdb:2.1.8c.109).2.1.8c.109: Pulling from analytics/lddscdbDigest: sha256:e2cb43e6b22ab344d7fc17f38e49caa3e295ef0efdfa43bc77ce671e0f172168Ran into a similar issue just now, took me a few hours to figure out the cause.Story goes like this: we use Jenkins for CI and it runs tests for our main service with docker-compose as it relies on few other services. Currently using http+docker://localunixsocket.Redirecting to /bin/systemctl start docker.service LDDS]# sudo docker-compose up -dCreating network "ldds_default" with the default driverCreating volume "ldds_couch-data" with default driverPulling couchdb (isl-dsdc.ca.com:5000/analytics/lddscouchdb:2.1.8c.109).2.1.8c.109: Pulling from analytics/lddscouchdbDigest: sha256:d3c13f08a4c9c3ed450325aef2dbe97abf0a55c13e9e2005109c05c713491fb3Status: Downloaded newer image for isl-dsdc.ca. ".* Make sure the Docker daemon is running.* If the Docker daemon is at a non-standard location, specify the URL with the DOCKER_HOST environment variable. This gave me a more useful error: Error checking context: 'no permission to read from some/data/directory'Fixing that error and making sure I can build Dockerfile-drupal resulted in docker-compose build working fine.Perhaps the code which outputs the error might be changed to something like: Couldn't build the services.* Make sure you can build your Docker images using "docker build. For example, I have managed to debug this by trying to build each service using Docker.My docker-compose.yml file contains: version: '2'Calling docker-compose build results in: Couldn't connect to Docker daemon at http+docker://localunixsocket - is it running?So I tried to use Docker to build each file individually: docker build -f="Dockerfile-drupal". Create a boot usb drive for macThis means that it tries to create containers with names that start with dash ( -) and that appears to be an illegal character for a docker container's name to start with. Then Jenkins would run docker-compose in that folder, and by default docker-compose uses directory name as a prefix to name containers. The failing branch name contained dashes ( -), and the resulting directory name generated by Jenkins ended up starting with -. It makes up a folder name like "$GIT_BRANCH-$RANDOMISH_HASH" and curious part is that it truncates string from the beginning. Jenkins creates a folder for each pipeline and shortens its name to some length. The problem appeared to be the following: So adding an user to that group can be a security issue according to your scenario. I just needed to login again to solve the issue.Take a look on warning indicated on documentation, cause "docker" group grants privileges equivalent to the root user. By default that Unix socket is owned by the user root and other users can only access it using sudoThis is why it works executing the command with sudo.If you instead want your custom user to connect to docker ( as in my case ) you should add it on docker group with:In fact the ownership for the docker socket are:Srw-rw- 1 root docker 0 Oct 3 11:31 /var/run/docker.sockAfter this, as reported on doc, you should log out and log back in or restart if you're testing on a virtual machine.I've tested into an Ubuntu 14.04 virtual machine running on Parallel and I didn't need to restart it.
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