Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Every Kubernetes cluster is provisioned with a special service that provides a way for internal applications to talk to the API server. by the command kubectl get svc, we can see that service listed with the name ‘kubernates‘

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now A pod is the smallest execution unit in Kubernetes. A Kubernetes pod is a collection of one or more Linux® containers, and is the smallest unit of a Kubernetes application. A pod encapsulates one or more applications. Pods are ephemeral by nature, if a pod (or the node it executes on) fails, Kubernetes can automatically create a

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Below are the main components found on a (worker) node: kubelet – the main service on a node, regularly taking in new or modified pod specifications (primarily through the kube-apiserver) and ensuring that pods and their containers are healthy and running in the desired state. This component also reports to the master on the health

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now The Kubernetes master runs the Scheduler, Controller Manager, API Server and etcd components and is responsible for managing the Kubernetes cluster. Etcd Etcd is a distributed, consistent key-value store used for configuration management, service discovery, and coordinating distributed work. API Server When you interact with your Kubernetes cluster using the kubectl command-line interface, we are

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Kubernetes (also known as K8s) is open source software for deploying, scaling and managing containerized applications. As an orchestrator, Kubernetes handles the work of scheduling containers on a cluster and also manages the workloads to ensure they run as you intended. Features: Self-monitoring: Kubernetes checks constantly the health of nodes and containers Portable: Kubernetes offers portability, and

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker supports several storage drivers, using a pluggable architecture. The storage driver controls how images and containers are stored and managed on your Docker host.  The Docker Engine provides the following storage drivers on Linux: overlay2 – overlay2 is the preferred storage driver for all currently supported Linux distributions, and requires no extra configuration.fuse-overlayfs

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now FROM – Sets the base imageMAINTAINER – Sets the author field of the generated imagesRUN – Execute commands in a new layer on top of the current image and commit the resultsCMD – Allowed only once (if many then last one takes effect)LABEL – Adds metadata to an imageEXPOSE – Informs container runtime portENV

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now • A Docker image is a file used to execute code in a Docker container.• Docker images act as a set of instructions to build a Docker container, like a template.• Docker images also act as the starting point when using Docker.• An image is comparable to a minimal lightweight snapshot in virtual machine

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now The Linux kernel device drivers are, essentially, a shared library of privileged, memory resident, low level hardware handling routines. It is Linux’s device drivers that handle the peculiarities of the devices they are managing. One of the basic features of is that it abstracts the handling of devices The following is a list of the

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker Hub is a service provided by Docker for finding and sharing container images. Teams & Organizations can pull publicly available docker images for their usage. Top 5 docker repository Rank Repository 1 ubuntu 2 centos 3 nginx 4 redis 5 node

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker wait command block until one or more containers stop, then print their exit codes Usage

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now The docker update command dynamically updates container configuration. For example : We can update a container’s kernel memory limit using the –kernel-memory option. You can update kernel memory while the container is running using below command:

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now The docker pause command suspends all processes in the specified containers. We can apply this command , if the container is in running stateThe docker unpause command un-suspends all processes in the specified containers. We can apply this command , if the container is in pause state docker pause <container name> docker unpause <container

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Docker kill and stop are two command used to terminate the container execution.docker kill – Used to forcefully terminate execution of container, which does not attempt to shut down the process gracefully.docker stop – Used to terminate execution safely and gracefully. docker kill [OPTIONS] CONTAINER [CONTAINER…] docker stop [OPTIONS] CONTAINER [CONTAINER…]

Limited Time Offer! For Less Than the Cost of a Starbucks Coffee, Access All DevOpsSchool Videos on YouTube Unlimitedly. Master DevOps, SRE, DevSecOps Skills! Enroll Now Containerization is the grouping together of software components with all it’s necessary dependent elements, like libraries, frameworks, and other dependencies so the software execution isolate in their own environment.Such isolated user spaces are called “Containers”, docker engine is a is such a a containerization platform, that packages application and its dependencies together in the