mayur.shenoy – Best DevOps https://www.bestdevops.com Lets Learn, Do it & Share! Thats a Best DevOps!!! Fri, 04 Feb 2022 09:55:10 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.3 Overview of Kubernetes with Architecture Examplained!! – MS https://www.bestdevops.com/overview-of-kubernetes-with-architecture-examplained-ms/ Wed, 27 Oct 2021 07:04:05 +0000 https://www.bestdevops.com/?p=22283
  • What is Kubernetes?
    Kubernetes, or k8s, is an open source platform that automates Linux container operations. It eliminates many of the manual processes involved in deploying and scaling containerized applications
    In other words, you can cluster together groups of hosts running Linux containers, and Kubernetes helps you easily and efficiently manage those clusters.
  • Why Do we need Kubernetes?
  • Benefits of kUbernetes?
    Kubernetes eases the burden of configuring, deploying, managing, and monitoring even the largest-scale containerized applications. It also helps IT pros manage container lifecycles and related application lifecycles, and issues including high availability and load balancing
  • How Kubernetes works aka Kubernetes architecture with image
    A working Kubernetes deployment is called a cluster. You can visualize a Kubernetes cluster as two parts: the control plane and the compute machines, or nodes. Each node is its own Linux® environment, and could be either a physical or virtual machine. Each node runs pods, which are made up of containers.

    • This diagram shows how the parts of a Kubernetes cluster relate to one another:

    • What is POD?
      This is essentially the smallest deployable unit of the Kubernetes ecosystem; more accurately, it’s the smallest object. A pod specifically represents a group of one or more containers running together on your cluster.
    ]]>         Lab and Assignment 1 For 25 Oct 2021 – Docker Session – MS https://www.bestdevops.com/lab-and-assignment-1-for-25-oct-2021-docker-session-ms/ Mon, 25 Oct 2021 12:45:04 +0000 https://www.bestdevops.com/?p=22251 What is Docker and Container?

    Docker image is blueprint of the container (application files + dependencies + filesystem), where as container is running instance of that image
    Docker image is created once and multiple Container instance can be created from same image
    Docker image just requires disk space as its logical , where as container instance requires computation resource + memory space

    Containers also isolate applications from each other on a shared OS

    Difference between docker pause and unpause?

    The docker pause command suspends all processes in the specified containers. On Linux, this uses the freezer cgroup. Traditionally, when suspending a process the SIGSTOP signal is used, which is observable by the process being suspended. With the freezer cgroup the process is unaware, and unable to capture, that it is being suspended, and subsequently resumed.

    The docker unpause command un-suspends all processes in the specified containers. On Linux, it does this using the freezer cgroup.

    What is the difference between docker stop and kill?

    A docker STOP command issues a SIGTERM signal to the main process running within the container, while KILL command issues a SIGKILL signal to the process.

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