Could you expound on that a bit? I'm kind of new to the whole container thing and have been making an effort to educate myself, but it's not clear to me what's "wrong" with Docker Swarm that Kubernetes is so much more popular, especially when it seems like everyone is using Kubernetes with Docker already.
Alright, I haven't really delved deep into Swarm and this reply is based on ~15 mins Googling but...
1. Kubernetes since last year has first-class support for role-based access control to elements in the cluster, whereas I can't find access control concepts in Swarm.
2. I have a Kubernetes cluster where the pods simply assume and communicate in HTTP. Within the network, both Kubernetes and Swarm encrypt internal network traffic with its own CA, IIRC. Nevertheless, Kubernetes has an Ingress concept, which allows me to translate external HTTP connections over TLS into the cluster into HTTP connections (and if load is rerouted, re-encrypted with the internal-use certs, of course). This enables my containers to be focused and agnostic about the whole certificate shabang.
