Hi there,
a few days ago I tried somethings with docker in my VM which happend to be running Ubuntu 16.04. Everything worked fine. Now I tried to move to my server which happens to run Ubuntu 14.04. I followed the same steps as used in my VM but docker does not seem to be installed correctly. After the installation I am not able to use docker due to the following error message:
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
I searched the internet but things like ‘use sudo’ etc just do not work. I use docker version 17.12.0. I would be grateful for any help!
Output of ‘dockerd -D’:
DEBU[2018-02-28T21:02:45.982316883+01:00] Listener created for HTTP on unix (/var/run/docker.sock)
INFO[2018-02-28T21:02:45.982815225+01:00] libcontainerd: started new docker-containerd process pid=7779
INFO[0000] starting containerd module=containerd revision=9b55aab90508bd389d7654c4baf173a981477d55 version=v1.0.1
DEBU[0000] changing OOM score to -500 module=containerd
INFO[0000] loading plugin “io.containerd.content.v1.content”… module=containerd type=io.containerd.content.v1
INFO[0000] loading plugin “io.containerd.snapshotter.v1.btrfs”… module=containerd type=io.containerd.snapshotter.v1
WARN[0000] failed to load plugin io.containerd.snapshotter.v1.btrfs error=“path /var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.btrfs must be a btrfs filesystem to be used with the btrfs snapshotter” module=containerd
INFO[0000] loading plugin “io.containerd.snapshotter.v1.overlayfs”… module=containerd type=io.containerd.snapshotter.v1
WARN[0000] failed to load plugin io.containerd.snapshotter.v1.overlayfs error=“/var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.overlayfs does not support d_type. If the backing filesystem is xfs, please reformat with ftype=1 to enable d_type support” module=containerd
INFO[0000] loading plugin “io.containerd.metadata.v1.bolt”… module=containerd type=io.containerd.metadata.v1
WARN[0000] could not use snapshotter btrfs in metadata plugin error=“path /var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.btrfs must be a btrfs filesystem to be used with the btrfs snapshotter” module=“containerd/io.containerd.metadata.v1.bolt”
WARN[0000] could not use snapshotter overlayfs in metadata plugin error=“/var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.overlayfs does not support d_type. If the backing filesystem is xfs, please reformat with ftype=1 to enable d_type support” module=“containerd/io.containerd.metadata.v1.bolt”
INFO[0000] loading plugin “io.containerd.differ.v1.walking”… module=containerd type=io.containerd.differ.v1
INFO[0000] loading plugin “io.containerd.gc.v1.scheduler”… module=containerd type=io.containerd.gc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.containers”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.content”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.diff”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.events”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.healthcheck”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.images”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.leases”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.namespaces”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.snapshots”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.monitor.v1.cgroups”… module=containerd type=io.containerd.monitor.v1
INFO[0000] loading plugin “io.containerd.runtime.v1.linux”… module=containerd type=io.containerd.runtime.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.tasks”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.version”… module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin “io.containerd.grpc.v1.introspection”… module=containerd type=io.containerd.grpc.v1
INFO[0000] serving… address=“/var/run/docker/containerd/docker-containerd-debug.sock” module=“containerd/debug”
INFO[0000] serving… address=“/var/run/docker/containerd/docker-containerd.sock” module=“containerd/grpc”
INFO[0000] containerd successfully booted in 0.005399s module=containerd
DEBU[2018-02-28T21:02:46.005739440+01:00] Using default logging driver json-file
DEBU[2018-02-28T21:02:46.005786718+01:00] Golang’s threads limit set to 1855710
DEBU[2018-02-28T21:02:46.011918710+01:00] [graphdriver] priority list: [btrfs zfs overlay2 aufs overlay devicemapper vfs]
DEBU[2018-02-28T21:02:46.012026777+01:00] [zfs] zfs command is not available: exec: “zfs”: executable file not found in $PATH
ERRO[2018-02-28T21:02:46.013724352+01:00] ‘overlay’ not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded.
DEBU[2018-02-28T21:02:46.014187286+01:00] processing event stream module=libcontainerd namespace=plugins.moby
ERRO[2018-02-28T21:02:46.016551896+01:00] ‘overlay’ not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded.
DEBU[2018-02-28T21:02:46.017274351+01:00] Using graph driver vfs
DEBU[2018-02-28T21:02:46.017348096+01:00] Max Concurrent Downloads: 3
DEBU[2018-02-28T21:02:46.017366926+01:00] Max Concurrent Uploads: 5
INFO[2018-02-28T21:02:46.023053614+01:00] Graph migration to content-addressability took 0.00 seconds
WARN[2018-02-28T21:02:46.024769097+01:00] Your kernel does not support oom control
WARN[2018-02-28T21:02:46.024784832+01:00] Your kernel does not support memory swappiness
WARN[2018-02-28T21:02:46.024796102+01:00] Your kernel does not support kernel memory limit
WARN[2018-02-28T21:02:46.024802786+01:00] Unable to find cpu cgroup in mounts
WARN[2018-02-28T21:02:46.024835600+01:00] Unable to find cpuset cgroup in mounts
WARN[2018-02-28T21:02:46.024880666+01:00] mountpoint for pids not found
DEBU[2018-02-28T21:02:46.026765642+01:00] Cleaning up old mountid : start.
Error starting daemon: Devices cgroup isn’t mounted