A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. As such, it is often used to guarantee the availability of a specified number of identical Pods There are many ways we can use replicasets such that always required number of pods running is guarangteed. While creating the deployment kubectl create deployment pradeepa–image=scmgalaxy/nginx-devopsschoolv1 –replicas=3 -n=pradeepa 2. While the deployment is running kubectl edit deploy pradeepa-n=pradeepa Replicas: 2 desired | 2 updated | 2

What is Kubernetes and its feature? Kubernates is an open-source system for automating deployment, scaling, and management of containerized applications. It groups containers that make up an application into logical units for easy management and discovery. Feature: Some of the features which Kubernates offers are:· Pod -collection contains· Replication Controller· Storage Management· Resource Monitoring· Health Checking· Horizontal Auto Scaling· Service Discovery· Networking· Services· ConfigMap and Secret· Rolling Deployment and Rollback· Logging How kubernetes works? Explain each components with Short Summary Kubernetes

What is docker update and docker wait? Explain with example commands. update : Update configuration of one or more containers docker update f4d703072499 Wait : wait Block until one or more containers stop, then print their exit codes docker wait f4d703072499 CMD ENTRYPOINT Can be overridden Cannot be overridden Cannot append additional params Can be appended Command to run when container starts or arg to ENTRYPOINT if specified Always first command to run when container starts Multiple times can be

What is Docker? Its a tool and platform which managing the container. Docker is a software platform that allows you to build, test, and deploy applications quickly. Docker is a set of platform as a service products that use OS-level virtualization to deliver software in packages called containers. What is Container? Its Logical entity. It is a running instance of the Docker Image. Docker Image is a template that contains the application, and all the dependencies required to run that application