container

docker network cross multiple hosts

hmm, yes you can use either k8s or swarms to make docker network working across multiple host, if you don't know much about both or don't bother or don't have enough resources to setup both, you can still make docker network working cross hosts

container

Test connectivity in a container

Containers are good, no matter you are using native Kubernetes cluster or using OpenShift, but when it comes troubleshoot, it can be quite frustrating as most time the container doesn't have the toolset you normally use for test and information collection. To resolved that,