Consul cluster and Ragistrator with example

Welcome to TGL and DS. In this article you will find consul cluster and registrator combination. I am also creating video tutorial. Please like and share my video and article. It will encourage me to create article and video more actively and Don't forget to subscribe my YouTube channel for get updates.

Best practices for docker image and dockerfile

In this article you will see what is right way to create docker image and right way to write docker file. I am also create video for this article. Please like and share my video. It will motivate me to create more article and video. and Don't forget to subscribe my YouTube channel for get updates.

Let me start with some basic of docker image and docker file. Docker image is a package of minimal OS and necessary application which we can create by write in docker file or committing a container. Refer Docker Document for docker image Docker Document for docker image

Docker Basic Information and commands

What is Docker?

      Docker is like virtualization technology but it is very lightweight and easy to build, ship run in any environment.

      More Document you can find in official website www.docker.com.

Prerequisites

      One VM with docker stable version installed. Installation document you can find in docker official website www.docker.com

Docker Swarm Mode Basic

What is an Docker Swarm Mode?

docker is intruducing cluster management and orchestration feauture in v1.12. They already released beta versions with this feauture. Earlier thay had cluster management tool docker swarm but now they are including docker swarm into the docker engine it self which they are calling docker engine in swarm mode.
For more document please refer Docker engine swarm mode doc.

What is an Docker Swarm?

Its cluster of docker engine where you can deploy services. Service is nothing but your container template from this template we can create container and scale also.
For more document please refer Docker engine swarm mode doc.

How Many Way to do Auto Ssh Login

There are multiple way to do automatic ssh login. Few i will demonstrate today.

        1) Public and private Key authentication.
        2) Re-using ssh connection with ControlMaster
        3) Using sshpass.

Prerequisites

        1) Two VM's (IP's)
        2) Server VM should have openssh-server and client vm should have openssh-client
        3) For the ubuntu you can install openssh-server and openssh-client thought apt-get install {package_name}