Answers from MOumita

moumita das — Fri, 22 Sep 2023 11:55:21 +0000

What is Namespaces? Explain with Image

A logical separation of different pods running across multiple nodes , that will avoid unwanted access / un controllable resource usage by multiple developer groups who are using the cluster

What is Pod? Explain with Image

The unit of scheduler . A pod can run multiple docker container inside it . User cant login inside , but login inside contaner of a pod . Pods can be scaled up & scaled down based on need basis

What is Replica Sets? Explain with Image

The overriden feature of Replica Controller . If user wants to scale up / scale down pods . then a object of replica set needs to be created , & scalling can be applied to the corresponding pod mapped to the replica set . If user wants to scale uo multiple pod doing multiple functionaly , individual replica set needs to be created for each pod

What is Deployment? Explain with Image

Deployment is wrapper of replicaset + pod . versioning of softwares can be managed by roll out / rollback / versioning feature of deployment cmd . 90% user across the industry uses deployment feature rather individually creating pod & replicaset

Moumita

moumita das — Thu, 21 Sep 2023 09:06:23 +0000

What is Kubernetes

Big Enterprise level load balancing service providing architecture

Why do we need it?

same as above + uninterrupted end user experience

How it works?

Workstation will execute kubectl , request will reach to api server , api server will check the storage etcdl db for healthy worker node , if available submit it to scheduler queue , if not available let controller manager figure out a healthy worker node

What are the components of Master?

api server , scheduler , controller manger , storage - etcdtl

What are the components of Worker?

an application called kubelet , proxy finder (dont remember the key word now ???)