Archives for Containers
Kubeadm – Bootstrap a kubernetes cluster
Building a cluster through various steps – kubeadm is the preferred way to start up a ; In the following order, kubeadm Kubeadm init Pre Flight Checks – Pull container…
Kubernetes Networking
Three Guiding Principles Networking Use Cases Within Same Pod - Just Use Localhost On Same Node – Pod to Pod – Use Bridge Networking On Different Nodes –…
Kubernetes components
Master aka Control Plane API Server Cluster Store (Store State) Scheduler Controller Manager Kubectl (CLI) interacts with the API Server API Server Cluster Store Scheduler – Pod Affinity (two…
kubernetes controller components
Controller components There are two main components of a controller: Informer/SharedInformer and watches for changes on the current state of Kubernetes objects and sends events to Workqueue where events are…
ARG vs ENV vs Powershell in Dockerfiles
ARGs in dockerfile are great for passing in build time paramaters (before a container is built)ENVs in dockefile are for passing in run time parameters (once a container is already…
Containerization of Legacy Apps
Recently, I was tasked with devising a strategy for transferring legacy apps (running on Windows 2003 and older) Containerization Strengths A technique for packaging a service, application or job. Shares…