API Server – provides all the operation on cluster using the API. Control Manager – regulates the state of cluster and performs a task. Cluster Store – stores the configuration information which can be used by each of the nodes Scheduler – distributes the workload.

Overlay2 – preferred storage driver for all currently supported Linux distributions, and requires no extra configuration. fuse-overlayfs – preferred only for running Rootless Docker on a host that does not provide support for rootless overlay2 btrfs and zfs – The btrfs and zfs storage drivers allow for advanced options, such as creating “snapshots”, but require more maintenance and setup. Each of these relies on the backing filesystem being configured correctly Vfs –  Intended for testing purposes, and for situations where no copy-on-write filesystem can be used. Aufs

Docker File 1 Docker File 2 Docker File 3 Docker File 4 Docker File 5

Storage Driver is used to store and manage images and containers on Docker host. Types of Storage Drivers aufs btrfs devicemapper vfs zfs

Pause command suspends all process in the container while unpause command un-suspends all process.

Docker stop command exits the container with exit code 0 while docker kill command exit the container with exit code 137.

Q1. Explain what is Docker Container with image? Light weight mechanism of isolating running process defined by specific images with resources like root filesystem, user and network.