Kubernetes networking

Pause container

In Kubernetes, the pause container serves as the “parent container” for all of the containers in your pod, and it has two main responsibilities:

  • it serves as the basis of Linux namespace sharing in the pod
  • with PID (process ID) namespace sharing enabled, it serves as...

As more and more businesses upgrade their legacy infrastructure and prepare for their move to the cloud. It’s helpful to have a systematic approach and estimate what must be done to achieve the objective.

Recently I’ve read an interesting article on AWS and their 7R approach

While it’s fairly “trivial” to install a stacked kubernetes cluster with kubeadm on any cloud provider or managed bare metal (where you have a certain degree of management over the networking which permits you to use bgp for example), it’s not so trivial when your nodes are situated in different network segments (clouds) and/or behind NAT.

With this guide I will try to alleviate a pain related to this kind of setup.

One of the biggest annoyances while using aws cli for me was the fact that the command’s output was not printed to standard stdout but it was opened in less like session, which was very annoying if you needed to copy several entries from the output result.