TASK-2 Integration of Docker Jenkins Git Docker

TASK-2 MLOPS AND DEVOPSAL

Task:-

1. Create container image that has Jenkins installed using dockerfile 

2. When we launch this image, it should automatically start Jenkins service in the container.

3. Create a job chain of job1, job2, job3 and job4 using build pipeline plugin in Jenkins 

4. Job1: Pull the Github repo automatically when some developers push repo to Github.

5. Job2: By looking at the code or program file, Jenkins should automatically start the respective language interpreter install image container to deploy code ( eg. If code is of PHP, then Jenkins should start the container that has PHP already installed ).

6. Job3: Test your app if it is working or not.

7. Job4: if app is not working, then send an email to the developer with error messages.

8. Create One extra job job5 for monitor: If the container where app is running. fails due to any reason then this job should automatically start the container again.

Lets go step by step

1. Creating Jenkins image by Dockerfile

In this Dockerfile we can use the centos:7 as a base OS and on that centos image we can install get sudo tools net-tools.and then we can add Docker repo for installing the docker onto the image after adding docker repo we can download docker after docker install I add Jenkins repo to the repo files then after this we can import Jenkins rpm and then we can install Jenkins in the docker so as we know Jenkins require java so we have to install java also .and we can install git python so after install all this steps we can start the service of docker and Jenkins and after this we can give sudo power to the Jenkins user to run the command.

Now the Dockerfile is ready , we can build our image by the following command

docker build -t <image-name:version> .

docker build -t jenkins:latest .               #example

After the success of build, launch the image by the following command

docker run -it --name <container_name> -p 8088:8080 <image:version>


docker run -it -p 8088:8080 --name jenkins-v /root/jenkins-docker/:/root/.jenkins/
-v /var/run/docker.sock:/var/run/docker.sock-v /root/Task2:/root/Task2
  

jenkins:latest 

Jenkins is running on the port 8088, you can confirm by searching https://<hostip>:8088 for exmaple https://192.168.1.104:8088

getting start

After launching the container copy this Admin password

Paste it in 192.168.99.101:8088 for Jenkins login

JENKINS FIRST PAGE

JOB #1

Pull the Github repo automatically when some developers push repo to Github.we have to trigger it remotely by the use of tokens or we can also use githubs webhooks

JOB#2

 Job2 ( container launching acc. to the file)

In this we first check the file extension according to which we will launch the container, it means if the file extension is in php then it will launch the container which has php compiler and interpreter and if the file extension is HTML then it launch container with httpd image.

OUTPUT OF JOB2

Job3 ( testing the env )

In This job we will test if the code is running successfully, that can be detected by the status code if status is other than 200 it means code fails and the job3 also fails , and our further pipeline stops. and if status code is 200 then it means our webserver in docker is running successfully

SUCCESFULL OP OF JOB3

JOB#4 (launch the container again if it goes down )

In This job extra job not included in the pipeline, it will check the container in every minute , if the containers fail due to any reasons it will launch the container again

VIEW OF ALL JOBS

CREATING PIPELINE

FINAL OUTPUT

In this section we will confirm that our docker is running and it also launch httpd webserver on it also start it service so by which we can see the output

GITHUB URL