CODEWITHSUNDEEP
dockerubuntu-19.04
Mittenchops
Mittenchops

Reputation: 19724

Docker installed with snap in Ubuntu 19.04 won't stay started

I installed docker via snap in Ubuntu. It worked fine until I rebooted. Since reboot, it won't stay started.

So we start the daemon manually:

$ sudo snap start docker
Started.

Cool. Looks started to me.

$ docker run hello-world
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.

Nope. Nope it was not.

What's going on and how do I fix it?

I would like to be able to start it manually, and also for it to start automatically at login.

Upvotes: 5

Views: 12910

Answers (2)

Orville
Orville

Reputation: 557

I got the same issue, though might help someone else

you can see the logs with snap logs docker

Mine was like this:

docker.dockerd[6853]: Error starting daemon: pid file found, ensure docker is not running or delete /var/snap/docker/423/run/docker.pid

I deleted the pid

rm -rf /var/snap/docker/423/run/docker.pid

restart docker

snap start docker

Upvotes: 5

Vit
Vit

Reputation: 8471

After installing using snap, the service is called snap.docker.dockerd.service.

sudo systemctl list-units| grep docker
sys-devices-virtual-net-docker0.device           loaded active plugged   /sys/devices/virtual/net/docker0                                             
sys-subsystem-net-devices-docker0.device         loaded active plugged   /sys/subsystem/net/devices/docker0                                           
run-snapd-ns-docker.mnt.mount                    loaded active mounted   /run/snapd/ns/docker.mnt                                                     
snap-docker-384.mount                            loaded active mounted   Mount unit for docker, revision 384                                          
snap.docker.dockerd.service                      loaded active running   Service for snap application docker.dockerd


sudo systemctl status snap.docker.dockerd.service
● snap.docker.dockerd.service - Service for snap application docker.dockerd
   Loaded: loaded (/etc/systemd/system/snap.docker.dockerd.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2019-08-05 10:16:56 UTC; 31s ago
 Main PID: 655 (dockerd)
    Tasks: 20 (limit: 1175)
   Memory: 197.8M
   CGroup: /system.slice/snap.docker.dockerd.service
           ├─ 655 dockerd -G docker --exec-root=/var/snap/docker/384/run/docker --data-root=/var/snap/docker/common/var-lib-docker --pidfile=/var/snap/docker/384/r
un/docker.pid --config-file=/var/snap/docker/384/config/daemon.json --debug
           └─1101 docker-containerd --config /var/snap/docker/384/run/docker/containerd/containerd.toml

Use

sudo systemctl stop snap.docker.dockerd.service
sudo systemctl start snap.docker.dockerd.service

or

sudo snap services docker
sudo snap stop docker
sudo snap start docker

Upvotes: 7

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