Node is seen in active state even my docker daemon is not running.

I 've 2 hosts where I 've docker running. Consul is also running on a docker container.

[root@docker2 ~]#docker exec -it 7e74638cb211 consul members
Node Address Status Type Build Protocol
node1 172.16.131.253:8301 alive server 0.5.0 2
node2 172.16.131.252:8301 alive server 0.5.0 2

I shows both my node as alive whereas my node2 is not even running docker at the moment. Docker on this node actually kind of crashed by consul is not able to detect that.

[root@docker1 ~]# docker ps
FATA[0000] Cannot connect to the Docker daemon. Is 'docker -d' running on this host?

Please suggest.