Jenkins.txt

Follow the link for the article - 
https://linuxize.com/post/how-to-install-jenkins-on-ubuntu-18-04/
https://www.digitalocean.com/community/tutorials/how-to-install-jenkins-on-ubuntu-18-04

Install Java

Add PPA repo - 
sudo add-apt-repository ppa:openjdk-r/ppa

sudo apt update
sudo apt install openjdk-8-jdk

Switch to Java 8
sudo update-alternatives --config java


Add the Jenkins Debian repository.

//Import the GPG keys of the Jenkins repository using the following wget command:

//1. wget -q -O - https://pkg.jenkins.io/debian/jenkins.io.key | sudo apt-key add -

//The command above should output OK which means that the key has been successfully imported and packages from this repository will be considered trusted.

//Next, add the Jenkins repository to the system with:

//2. sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'


Stop the jenkins server
$ sudo service jenkins stop
Move existing jenkins war file
$ sudo mv jenkins.war jenkins.war.old
Download latest jenkins war file
$ cd /usr/share/jenkins
$ sudo wget https://updates.jenkins-ci.org/latest/jenkins.war
Start the Jenkins server
$ sudo service jenkins start



#Install Jenkins

#sudo apt update
#sudo apt install jenkins

sudo systemctl start jenkins.service
sudo systemctl enable jenkins.service

systemctl status jenkins or
ps aux | grep jenkins

You will get like the below message - 

● jenkins.service - LSB: Start Jenkins at boot time
Loaded: loaded (/etc/init.d/jenkins; generated)
Active: active (exited) since Wed 2018-08-22 13:03:08 PDT; 2min 16s ago
    Docs: man:systemd-sysv-generator(8)
    Tasks: 0 (limit: 2319)
CGroup: /system.slice/jenkins.service


If you want to adjust firewall from the instance level
sudo ufw allow 8080

sudo ufw status


Status: active

To                         Action      From
--                         ------      ----
OpenSSH                    ALLOW       Anywhere
8080                       ALLOW       Anywhere
OpenSSH (v6)               ALLOW       Anywhere (v6)
8080 (v6)                  ALLOW       Anywhere (v6)


Go to your browser if your jenkins is asking for a password. 

please do from your command promt to get the password

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

you will get something - be43899883ca4e51bf7100054af5dae6 (Encrypted password)

copy that and reset your jenkins password


Click on Install Suggested Pluglin


Then - 

Create new Job -> Provide a name -> Freestyle Project  -> Okay

We need to install our bitbucket Pluglin as well. 

Go to HomePage -> Manage Jenkins -> Manage Plugins -> Click on Available -> type bitbucket
then -> Select Bitbucket (Integrates with BitBucket)


Restart Jenkins

sudo /etc/init.d/jenkins restart

Once you have done that, Select projects -> configurations -> 

Go to source code management -> Click on Got projects -> 

git clone https://atique12@bitbucket.org/atique12/mongocrud_application_frnt_end.git

remove atique12@ and git clone

Add credential -> Of my bitbucket if its a public repository then no need.

Build Triggers part -> Build when a change is pushed to BitBucket (checked)

In Build Part - > 

Integration Jenkins with WebHook

Go to bitbucket projects - settings - Webhooks

Title - Jenkins
URL - http://13.233.255.89/:8080/bitbucket-hook/

copy your other ec2 pem key to jenkins 

scp -i allinstancepair.pem allinstancepair.pem ubuntu@3.6.38.29:/home/ubuntu







SMTP mail - 

curl -sI http://jenkins/ | grep CLI

sudo systemctl restart jenkins

Then Google not allowed you pass your original app password

SMTP server should still be smtp.gmail.com

Default user e-mail suffix should be @yourcompany.com

Because Google no longer allows you to simply use your default e-mail password to login via any outside apps, in this case Jenkins. It is a lot more secure to let Google create a custom password for Jenkins rather than turning off G-Mail's security features to allow Jenkins access to your account.

Create the App Password here: https://security.google.com/settings/security/apppasswords




Install Plugin - 
Build Monitor View
Bitbucket






vi deploy.sh

cd /home/ubuntu
ls -l
ssh-keygen -R 13.233.183.227
ssh -i allinstancepair.pem ubuntu@13.233.183.227
ls
cd mongocrud_application_frnt_end
git pull origin master
pwd
sudo npm install
sudo pm2 start app.sh
pwd

chmod 777 deploy.sh

chmod 400 allinstancepair.pem
or chmod 600 allinstancepair.pem



From Here -------------

sudo vi /etc/ssh/ssh_config
StrictHostKeyChecking no

sudo service ssh restart
sudo su jenkins

Generated keygen
ssh-keygen

cd /var/lib/jenkins/.ssh/
ls

cat id_rsa.pub

then copy the entire stuff

connect to second Ec2 Instance

cd .ssh if not there the mkdir .ssh

vi authorized_keys
paste the public key


ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCiTn8zvA2dzdpRNhOYRD/YhPQHZvhlCQJqp2XzCzmUAp7qId3pFGlCag0oE/lIxbFYzDNS5BRtFQP0ctCuIj5pdKCAj7YQrj9GJYS5MRqQ/FHebJefzTOFsmSCxJM0Co1wFJJO9d3ydl5goFojM3f7eDcq9MbgpHz84lO0mORlRwDaGarpSTmPcvSol8eR3RHWzYT3Xd5jkQvVqvDjCQx1A3ExZ/xD1Fw30ZSivWEYRHsPBb9Z+ltaWr+9jsSF2QCUXF30ohD6FWCLvOec3ttZ2lhMoElrSZ7FGk9AYqs4jpRKi3ndxvpuuzOXx9R+S4/tXDtaRs5EnF4sRJILCOAJ allinstancepair