DevOps

Docker – Lab – Assignment – Bhargav

Step 1 – Register a site to POST Assigment and Share with Trainer and For Self Notes

- How to register? - https://www.bestdevops.com/wp-login.php?action=register
# Check Inbox SPAM box for Activation Email.
- How to login? - https://www.bestdevops.com/wp-login.php
- How to write post? - https://www.bestdevops.com/wp-admin/post-new.php
- How to check your Post? - https://www.bestdevops.com

Registered, Login successful, Posted

Step 2 – Pre Test using LMS

  • Login to https://www.devopsschool.com/lms/ using any gmail account
  • Try this quiz – https://www.devopsschool.com/lms/mod/quiz/view.php?id=250
  • Send a results to shiva@palmeto.co.in

Pretest completed, shared the results to Palmeto team

Step 3 – Install Docker Engine in Centos#1 Vm.

Step 1 - Install required packages. yum-utils provides the yum-config-manager utility, and device-mapper-persistent-data and lvm2 are required by the devicemapper storage driver.
$ sudo -s
$ 
$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
Step 2 - Use the following command to set up the stable repository
$ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Step 3 - Install the latest version of Docker CE
$ sudo yum install –y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
$ sudo yum-config-manager --enable rhui-REGION-rhel-server-extras
$ sudo yum install -y docker-ce
$ sudo yum install docker-ce
# Verify Docker Installations
$ docker -v
# Docker is installed but not started. The docker group is created, but no users are added to the group.
Step 4 - Enable Docker
$ sudo systemctl enable docker
Step 5 - Start Docker
$ sudo systemctl start docker
$ docker info
Step 5 - Verify that docker is installed correctly by running the hello-world image.
$ sudo docker run hello-world

https://devopsschool.com/tutorial/docker/install-config/docker-install-commuityedition-centos-rhel.html

Step 4 – Assignment#1

  • Create a Ubuntu container
  • Install Update, git & apache2
  • run a git command in container from outside
docker run -it ubuntu
apt -get update
apt-get -y install git
docker start 103a3cfda6cb
docker exec 103a3cfda6cb git --version
docker exec 103a3cfda6cb git --version
#git version 2.25.1

Step 5 – Assignment#2

  • Create a httpd container exposed at 8080 port
  • Access(curl) container from node
docker run -d -p 8080:80 httpd
docker ps -a
curl http://52.66.237.175:8080
It works

Step 6 – Assignment#3

Find out answer for following questions
- Where is the LOCAL Registry and How do i find out???
  /var/lib/docker
- [OFFLINE]Git is NOT versioning a file. So what?
- What is diff between docker pause and docker unpuase?
- What is significant of docker stop and docker kill?
- Create an image with base - centos and git must be installed in it.

Step – Assignment#4 to create a Docker Image and share the image

created image, build it and shares at Docker hub

https://hub.docker.com/repository/docker/indukuribhargav/dockerfile

Step 7 – SHARE ASSIGNMENT WITH TRAINER

  • Create a POST and Send a URL of post in Zoom Chat.
  • Of Assignment#1 – Assignment#2 – Assignment#3 in one post
  • Post title can be of your choise