Flannel and docker don't start

Today's christmas but I spent the whole day trying to get this to work :) This is what I did:

#1 FLANNEL

As mentioned I'd set the flannel etcd key on the master with:

etcdctl mk /coreos.com/network/config '{"Network":"172.17.0.0/16"}'

but I got this error when trying to start flannel on the minion:

Failed to retrieve network config: 100: Key not found (/atomic.io)

So I edited the /etc/sysconfig/flanneld file on the minion from:

# Flanneld configuration options  # etcd url location.  Point this to the server where etcd runsFLANNEL_ETCD="http://master:2379"# etcd config key.  This is the configuration key that flannel queries# For address range assignmentFLANNEL_ETCD_KEY="/coreos.com/network"# Any additional options that you want to pass#FLANNEL_OPTIONS=""to:# Flanneld configuration options  # etcd url location.  Point this to the server where etcd runsFLANNEL_ETCD="http://master:2379"# etcd config key.  This is the configuration key that flannel queries# For address range assignmentFLANNEL_ETCD_KEY="/atomic.io/network"# Any additional options that you want to pass#FLANNEL_OPTIONS=""

i.e. changed the FLANNEL_ETCD key.

After this systemctl start flanneld worked.

#2 DOCKER

I didn't find a way to make the version installed as a dependency by kubernetes work so I uninstalled it and following the docker docs for Centos installed docker-engine and manually created a docker.service file for systemctl.

cd /usr/lib/systemd/system

and the contents of the docker.service:

[Unit]Description=Docker Application Container EngineDocumentation=https://docs.docker.comAfter=network.target docker.socketRequires=docker.socketRequires=flanneld.serviceAfter=flanneld.service[Service]EnvironmentFile=/etc/sysconfig/flanneldExecStart=/usr/bin/docker daemon -H fd:// --bip=${FLANNEL_SUBNET}Restart=on-failureRestartSec=5[Install]WantedBy=multi-user.target

then start and enable the daemon with systemctl as well as query the status.

systemctl restart dockersystemctl enable dockersystemctl status docker