Rakesh Kumar

Minimum requirement to run any program/software/application we need an environment and this kind of environment is known as operating system(OS). As I explained in last post there are total 4 techniques we have for OS provisioning , and containerization is the fastest approach. Just within few seconds we can not only launch a full flash OS but all we can access an application as well. There are lots of container tools are available like Docker, Podman, CRI-O but these are depended on runc . RUNC is lowest level which directly run on top of kernel. Just to understand in simple language we can say tha runc is a server for container tools and container tools(Docker, Podman, CRI-O) are just client of it. There are two type of docker tools we have - Daemon based and Daemon less, docker is daemon based and Podman and CRI-O are daemon less. That means in - Docker - Talk with docker.service and this services talks with runc. Podman/CRI-O - Directly talk with runc That is the tech...

I am starting learning few more things from today onwards. Which are one of the most demanded technology now a days & terminology namely - Container | Docker | Podman | OpenShift . Red Hat official training under guidance of Mr. Vimal Daga . Today's learning :- There are 4 ways of OS(Operating System) provisioning we have - 1. Bare-Metal (Install OS directly on physical hardware), 2. Virtualization (VM), 3. Cloud (Instance), 4. Containerization (container). Here I'll focus on Containerization technology, containers & container orchestration. Containerization is the fastest way of OS provisioning, we can launch a full flash and ready to use OS just within few seconds. Which is known as Container. The host on which we install Docker/Podman is known as Docker/Podman host . The role of Docker is just to launch an OS. Docker is doing great whatever it was created for, but still there was few things those needs to be upgraded, and then a tool named Podman came in m...