jenkins_aws_installation

pre-requisites
first, you need to create linux EC2 instance and follow the basic steps. and in security group make sure to open port number 8080 .( for this add rule-->custom tcp-->enter the port number as 8080)
after creating linux Ec2 instance , open mobexterm and click on new seesion-->SSH-->enter the ip address which you have createdin linux ec2 instance and enter username and choose the option for upload keypair and click on OK.
Now in browser open the link https://pkg.jenkins.io/redhat-stable/.
Enter the following command in mobexterm ( you need to have a root user to perform all these commands , run command to get root access  #sudo su )
# sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
  sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
  then it will download the all packages needed for jenkins.
  Now enter the 2nd command , i.e
  # sudo yum install epel-release
  then you will get output as follows
 ###  Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
You need to be root to perform this command. ###
enter the following commands to load extras
# sudo amazon-linux-extras install epel
the it will load all the linux extras, then install now open jdk11 .for the follow the command
# sudo amazon-linux-extras install java-openjdk11
upto this java jdk11 is installed.
now we need to install jenkins for this follow the command
#sudo yum install jenkins
it wil complete the jenkins installation
to check the jenkins server staus , use the following command
# sudo service jenkins status
then you will get the output as follows
### jenkins.service - LSB: Jenkins Automation Server
   Loaded: loaded (/etc/rc.d/init.d/jenkins; bad; vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:systemd-sysv-generator(8)  ###
this means jenkins server not started yet so you need to perform start operation
# sudo service jenkins start
now, its going to start jenkins server.
Now in browser open jenkins server for this you need to enter publicip address:8080
ex: 18.233.147.176:8080(this for my ip addres )
for the first time it will ask for initialAdminPassword which will be available in the path(/var/lib/jenkins/secrets/initialAdminPassword).enter the command
#sudo cat /var/lib/jenkins/secrets/initialAdminPassword
it will display the intal password , copy the password and enter in the jenkins server and click on continue.
now you will get 2 options : 1.install suggested plugins 2. select plugins to install based on your choice you can choose any option.
then it will ask to set username and password enter those details and click on save and continue.
now jenkis dashboard page will display this is the process for installing ythe jenkins.