Tested Supported environment

Software	Version	Comments
kubernetes	v1.11.9
etcd	v3.3.8
keepalived	v2.0.4
flannel	v0.10.0
CNI	v0.6.0
coreOS	1800.7.0	last tested version. Not tested anymore
ubuntu	18.04LTS
docker	18.03.1-ce,build 9ee9f40	latest docker supported