ARTH TASK - 10

💥 Task Description →

👉 Write an Ansible PlayBook that does the
following operations in the managed nodes:

• Configure Docker

• Start and enable Docker services

• Pull the httpd server image from the Docker Hub

• Run the docker container and expose it to the public

• Copy the html code in /var/www/html directory and start the web server

    Firstly, I had installed Ansible on the top of Rhel 8 OS. Considering

that you know the installation of ansible I am directly jumping to the

use-case part that we have to perform.

    So, you can see the inventory file which is named as ip.txt, in this file

I had provided the target node IP so that we can connect to the

target node we have with us. Also, you can see the configuration file

of ansible in which I had given the path of the inventory file I had and

some other default values. The location of configuration file is inside

the /etc/ansible directory.

    You can take the help of ansible-doc file to see the syntax and

keywords used for the particular things you want to configure and

then you can apply those syntax accordingly in your yml file.

Refer to the figure given below :--

    On the left side, we have our Managed Node on which we have to

make a directory and then create a .yml format file in which we have

to write the ansible code. On the right side, we have the Target Node

on which we have to apply all the features that has been asked.

Command which is used to compile or run the yaml file is

#ansible-playbook -v <name of yml file>

Where, v is used for the verbose.

    Coming on to the task part we have to firstly install the Docker

software in our operating system.

To install the docker module we need to configure yum first, as you

can see in the code below that I had automated the yum

configuration under yum_repository.

    

    Then I had used the command module to install the docker-ce in

Target Node.

    In this part I had configured the docker services in the Target Node

with the help of ansible playbook.

    On the left side of the picture you can see the code that I had used in

docker.yml file. This code has been written with the help of ansible-

doc file.

    In this part I had installed the Python SDK of Docker and also I had

pulled a httpd image from the DockerHub.

    In this image as you can see I had created a workspace or the

directory named as wsp and then in next part I had created the

web.html file given the input of the content inside it.

    In this image as you can see I had setup the httpd webserver for docker container, exposed the ports and given the volumes. On the left side you side the compilation of yml file.

    Now in the Target Node by the inspect command you can see the IP

of the docker webserver IP

    Going on to the firefox just copy the webserver IP and then the

webserver file name.

    You will get the desired output or the content that you had given in

the web.html file.

Thank you learners for your precious time reading this post. Hope you like the integration of Ansible and Docker.