root@mth-k8s-02:~# systemctl status flannel
● flannel.service - Flannel Overlay Network
   Loaded: loaded (/lib/systemd/system/flannel.service; enabled; vendor preset: enabled)
   Active: active (running) since Mon 2017-01-30 10:24:02 UTC; 1s ago
     Docs: https://github.com/coreos/flannel
 Main PID: 4907 (flanneld)
    Tasks: 14
   Memory: 7.9M
      CPU: 51ms
   CGroup: /system.slice/flannel.service
           └─4907 /usr/local/bin/flanneld -iface=bond0.2047 -etcd-endpoints=https://mth-k8setcd-05:2379,https://mth-k8setcd-01:2379,https://mth-k8setcd-03:2379,https://mth-k8setcd-04:2379 -etcd-certfile=/

Jan 30 10:24:02 mth-k8s-02 systemd[1]: Started Flannel Overlay Network.
Jan 30 10:24:03 mth-k8s-02 flanneld[4907]: I0130 10:24:03.003690    4907 main.go:132] Installing signal handlers
Jan 30 10:24:03 mth-k8s-02 flanneld[4907]: I0130 10:24:03.004346    4907 manager.go:149] Using interface with name bond0.2047 and address 10.128.74.211
Jan 30 10:24:03 mth-k8s-02 flanneld[4907]: I0130 10:24:03.004384    4907 manager.go:166] Defaulting external address to interface address (10.128.74.211)
Jan 30 10:24:03 mth-k8s-02 flanneld[4907]: E0130 10:24:03.006919    4907 network.go:102] failed to retrieve network config: client: etcd cluster is unavailable or misconfigured
Jan 30 10:24:04 mth-k8s-02 flanneld[4907]: E0130 10:24:04.009414    4907 network.go:102] failed to retrieve network config: client: etcd cluster is unavailable or misconfigured