Jenkinsfile to run Terraform - jenkins-pipeline

Question

following this tutorial
https://medium.com/#devopslearning/100-days-of-devops-day-34-terraform-pipeline-using-jenkins-a3d81975730f
I want to be run a terraform file from Jenkins
I have installed Terraform plugin version 1.0.9
I go create a new pipeline project
on the pipeline tab I choose pipeline script and paste the below script
node {
env.PATH += ":/opt/terraform_0.7.13/"
stage ('Terraform Plan') {
sh 'terraform plan -no-color -out=create.tfplan'
}
// Optional wait for approval
input 'Deploy stack?'
stage ('Terraform Apply') {
sh "terraform --version"
}
This is the console output
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Terraform Plan)
[Pipeline] sh
[aws_terraform] Running shell script
+ terraform plan -no-color -out=create.tfplan
/var/lib/jenkins-slave/workspace/ow/ow_eng/aws_terraform#tmp/durable-53622951/script.sh: line 2: terraform: command not found
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
ERROR: script returned exit code 127
Finished: FAILURE

Answer 1

The terraform binary is not installed on the jenkins slave that is executing the pipeline. The binary must be installed to have the plugin work

Answer 2

If you would like to use a docker image for running this you can use this snippet:
pipeline {
agent {
docker {
image 'hashicorp/terraform:light'
args '--entrypoint='
}
}
stages {
stage('Terraform Plan') {
steps {
sh 'terraform plan -no-color -out=create.tfplan'
}
}
// Optional wait for approval
input 'Deploy stack?'
stage ('Terraform Apply') {
sh "terraform --version"
}
}
}
Be aware that you will need to install the docker pipeline plugin. The trick is here to redefine the entrypoint because the official terraform image already defines an entrypoint to the terraform executable.