# Docker will not start on centos7 **URL:** \ **Category:** General\ **Created:** [March 7, 2017, 10:17pm UTC](https://forums.docker.com/t/docker-will-not-start-on-centos7/29423 "2017-03-07T22:17:34Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![johnnyhorn](https://avatars.discourse-cdn.com/v4/letter/j/c4cdca/32.png) [@johnnyhorn](https://forums.docker.com/u/johnnyhorn)\ **Post date:** [March 7, 2017, 10:17pm UTC](https://forums.docker.com/t/docker-will-not-start-on-centos7/29423/1 "2017-03-07T22:17:34Z")
I am trying to start Docker but get these errors. This is for journalctl -xe ``` Mar 07 16:05:18 vps26230.inmotionhosting.com docker-storage-setup[23553]: INFO: Volume group backing root filesystem could not be determined Mar 07 16:05:18 vps26230.inmotionhosting.com docker-storage-setup[23553]: ERROR: No valid volume group found. Exiting. Mar 07 16:05:18 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:18.265197935- 06:00" level=info msg="libcontainerd: new containerd process, pid: 23588" Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.271661031- 06:00" level=error msg="'overlay' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overl Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.271840024- 06:00" level=warning msg="Docker could not enable SELinux on the host system" Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275069226- 06:00" level=info msg="Graph migration to content-addressability took 0.00 seconds" Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275204656- 06:00" level=warning msg="Your kernel does not support oom control." Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275224828- 06:00" level=warning msg="Your kernel does not support memory swappiness." Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275236388- 06:00" level=warning msg="Your kernel does not support kernel memory limit." Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275243207- 06:00" level=warning msg="Unable to find cpu cgroup in mounts" Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275276798- 06:00" level=warning msg="Unable to find cpuset cgroup in mounts" Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275311765- 06:00" level=warning msg="mountpoint for pids not found" Mar 07 16:05:19 vps26230.inmotionhosting.com dockerd-current[23573]: time="2017-03-07T16:05:19.275386287- 06:00" level=fatal msg="Error starting daemon: Devices cgroup isn't mounted" ``` This is for systemctl status docker.service: ``` ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled) Active: failed (Result: exit-code) since Tue 2017-03-07 16:13:59 CST; 17s ago Docs: http://docs.docker.com Process: 23806 ExecStart=/usr/bin/dockerd-current --add-runtime docker-runc=/usr/libexec/docker/docker-runc-current --default-runtime=docker-runc --exec-opt native.cgroupdriver=systemd --userland-proxy-path=/usr/libexec/docker/docker-proxy-current $OPTIONS $DOCKER_STORAGE_OPTIONS $DOCKER_NETWORK_OPTIONS $ADD_REGISTRY $BLOCK_REGISTRY $INSECURE_REGISTRY (code=exited, status=1/FAILURE) Main PID: 23806 (code=exited, status=1/FAILURE) Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.560915455-06:00" level=error msg="'overlay' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded." Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.561075396-06:00" level=warning msg="Docker could not enable SELinux on the host system" Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.563966928-06:00" level=info msg="Graph migration to content-addressability took 0.00 seconds" Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.564134980-06:00" level=warning msg="Your kernel does not support oom control." Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.564158409-06:00" level=warning msg="Your kernel does not support memory swappiness." Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.564169960-06:00" level=warning msg="Your kernel does not support kernel memory limit." Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.564176840-06:00" level=warning msg="Unable to find cpu cgroup in mounts" Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.564209183-06:00" level=warning msg="Unable to find cpuset cgroup in mounts" Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.564245660-06:00" level=warning msg="mountpoint for pids not found" Mar 07 16:13:59 vps26230.inmotionhosting.com dockerd-current[23806]: time="2017-03-07T16:13:59.564325231-06:00" level=fatal msg="Error starting daemon: Devices cgroup isn't mounted" ``` ---
**Author:** ![mgvazquez](https://sea3.discourse-cdn.com/docker/user_avatar/forums.docker.com/mgvazquez/32/40962_2.png) [@mgvazquez](https://forums.docker.com/u/mgvazquez)\ **Post date:** [March 7, 2017, 11:06pm UTC](https://forums.docker.com/t/docker-will-not-start-on-centos7/29423/2 "2017-03-07T23:06:38Z")
What kind of VM are you using to install docker? Kernel Type/Version? ---
**Author:** ![johnnyhorn](https://avatars.discourse-cdn.com/v4/letter/j/c4cdca/32.png) [@johnnyhorn](https://forums.docker.com/u/johnnyhorn)\ **Post date:** [March 8, 2017, 12:59am UTC](https://forums.docker.com/t/docker-will-not-start-on-centos7/29423/3 "2017-03-08T00:59:46Z")
It is a VPS server. cPanel Version 62.0 (build 16) Apache Version 2.4.25 PHP Version 7.0.16 MySQL Version 5.6.35 Architecture x86\_64 Operating System linux Path to Sendmail /usr/sbin/sendmail Path to Perl /usr/bin/perl Perl Version 5.16.3 Kernel Version 3.10.0-042stab120.11