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README_UbuntuInstallation.md

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Maven project archetype :

mvn archetype:generate -DgroupId=com.edureka.app -DartifactId=maven-demo -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false

Jenkins installation on ubuntu

  1. Sudo apt update
  2. Sudo apt install default-are
  3. Sudo apt install maven
  4. Sudo wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -
  5. sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
  6. Sudo apt update
  7. Sudo apt install Jenkins
  8. Sudo sytemctl status Jenkins
  9. Sudo systemctl start Jenkins
  10. Goto the url - http:// : 8080/ as Jenkins runs on port 8080.
  11. sudo cat /var/lib/jenkins/secrets/initialAdminPassword

Email Notification : 

Do all these steps, otherwise the error will persists.

-You must have to log into just one gmail account (the one you are using to send email). -Then go to https://www.google.com/settings/security/lesssecureapps and Turn On this feature. -And last go to https://accounts.google.com/DisplayUnlockCaptcha and click Continue.

Jenkins download agent.jar

wget http://ec2-3-22-234-221.us-east-2.compute.amazonaws.com:8080/jnlpJars/slave.jar

java -jar agent.jar -jnlpUrl http://ec2-18-217-44-60.us-east-2.compute.amazonaws.com:8080/computer/Jenkins-slave1/slave-agent.jnlp -secret d89ca0328c7c3f92973aa8793cfbc022ce967bd7d4b84a8b372e49df74f055cf

java -jar agent.jar -jnlpUrl http://ec2-18-217-44-60.us-east-2.compute.amazonaws.com:8080/computer/jenkins-slave/slave-agent.jnlp -secret b9a39162860dc87b8f5669cd8183684592518b04ba38ac7a9d35329d2f9c9be9 -workDir "/var/lib/jenkins/"

Install Tomcat 9

  1. Apt update
  2. Apt install tomcat9
  3. Apt install tomcat9-admin
  4. Configure user in /var/lib/tomcat9/conf/tomcat-users.xml
  5. Configure http port from 8080 to 8888 in /var/lib/tomcat9/conf/server.xml
  6. Systemctl status tomcat9
  7. Systemctl start tomcat9

Setting up User*

#Changing root password :

  1. Sudo su
  2. Passed root #Creating new User
  3. Adduser #Add user to Sudo group
  4. Usermod -aG sudo #Add Jenkins to sudo group
  5. Usermod -aG sudo Jenkins

Make Jenkins to execute scripts with no password

  1. Put in sudoers.d/jenkins jenkins ALL=(ALL) NOPASSWD:ALL

Setting up selenium in Ubuntu

  • Install Chrome :
  1. sudo curl -sS -o - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add
  2. sudo echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list
  3. sudo apt-get -y update
  4. sudo apt-get -y install google-chrome-stable
  • Install Chrome Driver
  1. wget https://chromedriver.storage.googleapis.com/88.0.4324.96/chromedriver_linux64.zip
  2. unzip chromedriver_linux64.zip

Steps to run selenium

  1. Complete the CICD pipeline for address book project and ensure it is running on server.
  2. Create a new maven project for Selenium.
  3. Update pom.xml with selenium library, testng library and shade plugin.
  4. Push it to the GitHub repository.
  5. Create a job in Jenkins.
  6. And build and package your application as jar.
  7. Run jar to execute the selenium script. Note :
  8. ensure —headless argument is added while running on ubuntu
  9. Ensure that Jenkins user have given admin rights.

Selenium Pipeline Job

node{ stage('git checkout'){ sh 'mvn clean' git 'https://github.com/shubhamkushwah123/sel-repo.git' }

stage('build'){
    sh 'mvn clean package'
}

stage('execute selenium test cases'){
    
sh 'sudo su -c "java -jar /var/lib/jenkins/workspace/selenium-test/target/test-my-app-0.0.1-SNAPSHOT-shaded.jar"' 

}

}

Docker Installation

  1. Sudo su
  2. Apt update
  3. Apt install -y docker
  4. Systemctl start docker
  5. Systemctl status docker
  6. Systemctl stop docker
  7. Docker —version

Dockerfile :

  1. FROM ubuntu:latest
  2. MAINTAINER Sahiti ([email protected])
  3. RUN apt-get update
  4. RUN apt-get install -y nginx
  5. ENTRYPOINT ["/usr/sbin/nginx","-g","daemon off;"]
  6. EXPOSE 80

Build the image :

docker build .

Run the image :

docker run -itd -p 8002:80 shubhamkushwah123/nginx:1.0

Docker Commands

Docker version Docker build . Docker ps Docker ps -a Ps -ef | grep docker Docker run hello-world Docker run -d hello-world Docker run -d hello-world sleep 15 Docker run -itd ubuntu:latest Docker run —name my-containewr ubuntu Hostname -I Hostname -a / hostname -f

Exit to come out from an attached container

-i : interactive = exit to come out CTRL+P+Q -t : terminal - CTRL+P+Q to come out -d: detached – stop containerid to stop container

Attaching a container terminal again to interactive after coming out of it.

  1. Docker exec -it <container_id> /bin/bash

Removing Container :

Docker rm -f <container_id>

To run container with -itd

Docker ru -itd ubuntu:latest

Attaching the terminal(standard input/output to the container)

Docker attach <container_id>

To Start and Stop a container

  1. Docker start < container_id>
  2. Docker stop <container_id>
  3. Docker pause <container_id>
  4. Docker unpause <container_id>

Specify resources to a docker container

Docker run -it —memory=“128M” —cpus=“1.0”

Running tomcat as docker container

  1. Docker run -itd tomcat:latest
  2. Docker run -p 20000:8080 —name=my-tomcat tomcat:latest
  3. Docker run -itd -p 20000:8080 —name=my-tomcat1 tomcat:latest
  4. Docker run -itd -P —name=my-tomcat2 tomcat:latest