Jenkins

Installing

https://www.jenkins.io/doc/book/installing/linux/

Install Java

sudo apt update

sudo apt install openjdk-8-jdk

Install Jenkins LTS Ubuntu

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

sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > \

/etc/apt/sources.list.d/jenkins.list'

sudo apt-get update

sudo apt-get install jenkins

Tests:

https://ip:8080 - jenkins

https://ip:8080/restart - reboot jenkins

Update

cd /usr/share/jenkins

sudo mv jenkins.war jenkinsold.war

sudo wget https://link/jenkins.war

sudo service jenkins restart

Log rotation

Build > Configure > General > Discard old builds > Max # of builds to keep > 10

Deploy

Manage Jenkins > Configure System > Publish over SSH > add servers & keys

Job > Configure > Post-build Action > Send build artefacts over SSH

Disable job

Job > Configure > General > Disable this job

Nodes

Install Plagins:

SSH Agent

SSH Slave

Manage Jenkins > Manage Nodes > New Node

Configuring jobs to run on specific nodes:

Job > Configure > General > Restrict where this project can be run > Label expression

CLI

wget https://link:8080/jnlpJars/jenkins-cli.jar

java -jar jenkins-cli.jar -auth username:password -s htttp://link:8080 help

or

java -jar jenkins-cli.jar -auth username:token -s htttp://link:8080 help

or

export JENKINS_USER_ID=user

export JENKINS_API_TOKEN=token

java -jar jenkins-cli.jar -s htttp://8080 help

Export Job to file .xml

java -jar jenkins-cli.jar -auth username:token -s htttp://link:8080 get-job job1 > job1.xml

Import Job from file .xml

java -jar jenkins-cli.jar -auth username:token -s htttp://link:8080 create-job job1 < job1.xml

Build Triggers

Trigger builds remotely - This feature provides flexibility that allows triggering a job from the script, command line.

curl -X POST "https://username:api-token@JENKINS_URL:8080/job/Example/build"

or

wget --auth-no-challenge --http-user=username --http-password=api_token http://JENKINS_URL:8080/job/Trigger_Remote_Demo/build?token=My-token

Build after other projects are built - If your project depends on another project build

Build periodically - You can create a schedule (or multiple schedules) for Jenkins to build periodically or on a specific date/time.

Poll SCM - You can create a schedule for Jenkins to check the source code changes, if there are updates to checkout the latest code down, and then execute the build action.

Autodeploy

github plugin - Execute the build action after push changes.

Build Options > General > Github project

Build Options > General > Build Triggers > Github hook trigger for GITScm polling

Github > Project > Settings > Webhook > Payload URL > JENKINS_URL:8080/github-webhook

Github > Project > Settings > Webhook > Content type > application/json