title: Docker on RHEL 6 Cgroup mounting failing
body: <p>I'm trying to get my head around something that's been working on a Centos+Vagrant, but not on our providers RHEL (Red Hat Enterprise Linux Server release 6.5 (Santiago)). A <strong>sudo service docker restart</strong> hands this:</p>
  
  <pre><code>Stopping docker:                                             [  OK  ]
  Starting cgconfig service: Error: cannot mount cpuset to /cgroup/cpuset: Device or resource busy
  /sbin/cgconfigparser; error loading /etc/cgconfig.conf: Cgroup mounting failed
  Failed to parse /etc/cgconfig.conf                           [FAILED]
  
  Starting docker:                                              [  OK  ]
  </code></pre>
  
  <p>The service starts okey enough, but images cannot run. A mounting failed error is shown when I try. And the startup-log also gives a warning or two. Regarding the kernelwarning, centos gives the same and has no problems as Epel should resolve this:</p>
  
  <pre><code>WARNING: You are running linux kernel version 2.6.32-431.17.1.el6.x86_64, which might be unstable running docker. Please upgrade your kernel to 3.8.0.
  2014/08/07 08:58:29 docker daemon: 1.1.2 d84a070; execdriver: native; graphdriver:
  [1233d0af] +job serveapi(unix:///var/run/docker.sock)
  [1233d0af] +job initserver()
  [1233d0af.initserver()] Creating server
  2014/08/07 08:58:29 Listening for HTTP on unix (/var/run/docker.sock)
  [1233d0af] +job init_networkdriver()
  [1233d0af] -job init_networkdriver() = OK (0)
  2014/08/07 08:58:29 WARNING: mountpoint not found
  </code></pre>
  
  <p>Anyone had any success overcoming this problem or should I throw in the towel and wait for the provider to update to RHEL 7?</p>