title: Flannel and docker don't start
body: <p>I'm trying to set up a kubernetes cluster on 2 nodes , centos 7.1 using this <a href="http://severalnines.com/blog/installing-kubernetes-cluster-minions-centos7-manage-pods-services" rel="nofollow noreferrer">guide</a>. However when I attempt to start the services on the minion like so:</p>
  
  <pre><code>for SERVICES in kube-proxy kubelet docker flanneld; do
      systemctl restart $SERVICES
      systemctl enable $SERVICES
      systemctl status $SERVICES 
  done
  </code></pre>
  
  <p>I get the following error:</p>
  
  <pre><code>-- Logs begin at Wed 2015-12-23 13:00:41 UTC, end at Wed 2015-12-23 16:03:54 UTC. --
  Dec 23 16:03:47 sc-test2 systemd[1]: docker-storage-setup.service: main process exited, code=exited, status=1/FAILURE
  Dec 23 16:03:47 sc-test2 systemd[1]: Failed to start Docker Storage Setup.
  -- Subject: Unit docker-storage-setup.service has failed
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit docker-storage-setup.service has failed.
  -- 
  -- The result is failed.
  Dec 23 16:03:47 sc-test2 systemd[1]: Unit docker-storage-setup.service entered failed state.
  Dec 23 16:03:48 sc-test2 flanneld[36477]: E1223 16:03:48.187350 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
  Dec 23 16:03:49 sc-test2 flanneld[36477]: E1223 16:03:49.189860 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
  Dec 23 16:03:50 sc-test2 flanneld[36477]: E1223 16:03:50.192894 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
  Dec 23 16:03:51 sc-test2 flanneld[36477]: E1223 16:03:51.194940 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
  Dec 23 16:03:52 sc-test2 flanneld[36477]: E1223 16:03:52.197222 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
  Dec 23 16:03:53 sc-test2 flanneld[36477]: E1223 16:03:53.199248 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
  Dec 23 16:03:54 sc-test2 flanneld[36477]: E1223 16:03:54.201160 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
  </code></pre>
  
  <p>I'm sure I set the key on the master with :
  etcdctl mk /coreos.com/network/config '{"Network":"172.17.0.0/16"}'</p>
  
  <p>By far installation seems to be the hardest bit on using kubernetes :(</p>