What are the components of Kubernetes master and explain each component’s function?

API server – It contains all the APIs provided by K8s. It acts as the front-end, we access via REST. It is like ears in human body, it receive the things. Cluster store – All the requests / data stored in cluster store. etcd is the storage unit use by k8s. It is like brain in human body. There is only one cluster store in a master. Controller Manager – It is manager of all the controllers. One controller is

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What is Pod in kubernetes. Explain in 15 points with image as an example

PODS are the atomic unit of scheduling in K8sDocker manages container – VMware manages VM & K8s manages PODsIt is our application or the serviceIt is the basic unit of workNo pod is ever redeployed(Ephemeral) (ie, we can’t get the same pod again. We can get the similar pod.)Pod is running as long the container inside is running.Pods contains one or more containers, at least one.Kubelet will instantiate pods.Pod is running as long the container inside is running.Pods will communicate

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Write down 10 features of Kubernetes with image

K8s can manage the scalability challenge bring by containers. K8s runs many containers as a cluster K8s is a container orchestrator K8s provide the desired state – we desired to have 1000 containers K8s is self maintaining – self healing Auto rollback Auto scaling K8s managing load balancing K8s absorb changes K8s provide very speed deployment K8s enhance the productivity by reducing the dependency K8s provide the security improvement

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Day-3: 4.What is pod in Kubernetes. Explain in 15 Points with image as example

Pod is the basic unit of work It is application or service Pod is an atomic unit of scheduling in Node Kubernetes manages pod and not container Kubernetes job is to keep the pods running based on desired state State is the pod up and running Health is the application in the pod running Pod shares the same resource with all containers in it Pod shares the same IP to all containers in it Preferred approach is one container in

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What is Pod in kubernetes. Exaplin in 15 points with image as an example

atomic unit of schedulingall container in pod share the pod environment. anything attached to pod, all container can use it.it can contain one or more containers.pod can have tight coupling- loose coupling.pods are atomic, you can scale the port from 1 to many.pods are the application which can access through n/w.pods contain container. and runs as long as container run.multi container pods – main container and side car container.pod lifecycle: phase: pending –> phase: running –> phase: succeeded/failed.inter pod communication

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What are the components of Kubernetes worker and explain each component’s function?

kubelet: just like a slave. the main kubernetes agent. register node with cluster- master approves it. watches api server.kubelet will talk to api server with health status.instantiate pods – not creation. pod is the logical unit of cluster. exposes end points on 10255.container engine: does container management. ex:dockerkube proxy: it assign pod ip address, all containers in a pod shared a single ip. load balances across all pods in a service.

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What are the components of Kubernetes master and explain each component’s function?

API server : It is the front end for the Kubernetes control plane, exposes the Kubernetes API. All other components interact with api server. SchedulerThis is one of the key components of Kubernetes master. It is a service in master responsible for distributing the workload. Controller ManagerControls the Kubernetes cluster. It includes the Endpoints Controller, Replication Controller, and Namespace Controller etc etcd : Consistent and highly-available key value store used as Kubernetes’ backing store for all cluster data

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What are the components of Kubernetes master and explain each component’s function?

api server: all the feature available at api server. , front end to control plane. anything want to master , can send to api server.it can be using http, it consumes json file. internally it communicates with each other.cluster store:any req is send is stored here. internal communication(worker to master etc.) also stored here. it uses etcd (open source) to store.it should exist in etcd- source of truth.controller manager: collection of controller. node controller(all the monitoring activities), endpoints controller. watches

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Write down 10 fearures of Kubernetes with image

k8s is container orchestration toolworkload placement ,k8s helping infrastructure abstractionhelp to manage desired stateself healing, replace with desired stateautomatic rollback/rollouts – rollback the feature / versionauto scaling – 5 container to 50 container can be doneload balancing of container/podshigh speed of deployment. upgrade/ability to rollbackstorage orchestration.

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What is Pod in kubernetes. Exaplin in 15 points with image as an example

Pods Pods are the smallest deployable units of computing that you can create and manage in Kubernetes. A Pod (as in a pod of whales or pea pod) is a group of one or more containers, with shared storage and network resources, and a specification for how to run the containers. A Pod’s contents are always co-located and co-scheduled, and run in a shared context. A Pod models an application-specific “logical host”: it contains one or more application containers which are relatively tightly coupled.

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Master node compoents

kube-apiserver The API server is a component of the Kubernetes control plane that exposes the Kubernetes API. The API server is the front end for the Kubernetes control plane. The main implementation of a Kubernetes API server is kube-apiserver. kube-apiserver is designed to scale horizontally—that is, it scales by deploying more instances. You can run several instances of kube-apiserver and balance traffic between those instances. etcd Consistent and highly-available key value store used as Kubernetes’ backing store for all cluster data. If your

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What is pod. Explain 15 points

A pod is a unit which can have one or more unit which can be runIt will have a unique IPIt will have config info for a containerThe pod initialize the containerThe will in running state when the container is started.The pod ceases to exist when the container is terminatedPod can not be restarted, we can start a similar podIt is like a logical host for the containerEvery pod has the status likePending : created but the container is not

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Assignment 1 Day 3

Write down 10 features of Kubernetes with image Helps manage large clusters Load balancing Service discovery Self monitoring Security Storage services Automated rollbacks Optimum resource utilization Auto scalable Predictable What are the components of Kubernetes master and explain each component’s function?API Server-All requests come to API server. REST based.etcd-storage for cluster configuration and stateController-keeps tracks of the pods and reports to API serverScheduler-assigns a pod to a node based on resource requirements What are the components of Kubernetes worker and

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What are the components of Kubernetes worker and explain each component’s function?

kube-proxy kube-proxy is a network proxy that runs on each node in your cluster, implementing part of the Kubernetes Service concept. kube-proxy maintains network rules on nodes. These network rules allow network communication to your Pods from network sessions inside or outside of your cluster. kube-proxy uses the operating system packet filtering layer if there is one and it’s available. Otherwise, kube-proxy forwards the traffic itself. Container runtime The container runtime is the software that is responsible for running containers. Kubernetes supports several container runtimes: Docker, containerd, CRI-O,

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What is Pod in kubernetes.

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 new replica of that pod to continue operations.  Pods include one or more containers (such as Docker containers) Pods represent the processes running on a cluster Any given

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