jaison – Best DevOps

Write down 10 features of Kubernetes with image

jaison — Wed, 01 Sep 2021 07:00:51 +0000

kubernetes simplifies the data ware house into a cluster, which can operate via a laptop

kubernetes help us to scale up our application so fast

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

jaison — Wed, 01 Sep 2021 06:56:23 +0000

It is the smallest unit in kubernetes world

Pod contain a self sufficient unit, like network

It has a life cycle- pending, running , succeded/failed

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

jaison — Wed, 01 Sep 2021 06:50:15 +0000

Which contain the

kubelet- which registers the pod to the kubernetes master

Container engine-which pull docker from registry

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

jaison — Wed, 01 Sep 2021 06:47:01 +0000

It is compose of a control plane. which in turn contain following

API Server- User from outside interact with the API Server, to get access to the pod

Etcd– act as the brain,, where all information about the pods are storing

Scheduler- Schedules the pods, meaning if one pod down create similar copy of it

Write a example dockerfile with 1CMD/1ENTRYPOINT

jaison — Tue, 31 Aug 2021 08:05:37 +0000

It execute normally. So impact noted due to two entry point or tow CMD

FROM ubuntu
MAINTAINER Rajesh Kumar << rajesh@scmgalaxy.com>>
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get update
RUN apt-get -y install tzdata
RUN apt-get update && apt-get install git -y && apt-get install -yq apache2
CMD /usr/sbin/apache2ctl -D FOREGROUND
ENTRYPOINT ["/bin/echo", "Hello444444444444"]

both cmd and entry point cannot come together for a web application

What is the differenece between docker pause and docker unpause

jaison — Mon, 30 Aug 2021 07:15:16 +0000

docker pause-container can be paused for some while

docker unpause- container can be resume from that point again

What is the differenece between docker stop and docker kill

jaison — Mon, 30 Aug 2021 07:13:14 +0000

docker stop & kill seems to similar

Explain What is Docker Container with image

jaison — Mon, 30 Aug 2021 07:10:19 +0000

Docker container is a container which can serve our requirement based on the image