Kubernetes native network policies from zero to hero!
Kubernetes native network security policies by example. The Kubernetes network model is a “flat” network design. This means that all pods on one node can communicate freely with all pods on all the other nodes without being address translated, or blocked. The networking is implemented by a CNI (Container Networking Interface). Examples of popular CNI’s are Cilium, Calico, […]
How to TCPdump in Kubernetes !
An introduction and references for tcpdump troubleshooting in kubernetes.
How to TCPdump effectively in Docker !
An introduction and references for tcpdump troubleshooting in kubernetes.
Learning about Linux namespaces in #docker and #kubernetes !
A practical walkthrough in exploring namespaces in relation to docker and kubernetes. As you probably know, containers running on the same host, share the Linux kernel. That’s why a container image does not contain a kernel, only software and tools that make up a distro like for example a package manager. So, if containers share […]
