This is a terraform test code that implements the following features.
- A VPC. include a subnet, route table, and internet gateway.
- An EC2 instance, running a web server
- This use AWS Free Tier instance
- An Application Load Balancer targeting the EC2 instance.(http://minaalb-65473996.ap-southeast-2.elb.amazonaws.com/)
- All the resouces use modules and input/output variables
- EC2 instances can only access through 22 port
- Can modify EC2 instances count through variable setting and trigger ci/cd pipeline
#Branch introduction Master branch is terraform 0.11, dev0.12 branch is terraform 0.12 If the local machine to deploy can use tfswitch for version switching
If use gitlab cicd automatically deploy, you only need to modify yaml file from
image:
name: hashicorp/terraform:0.11.11
to
image:
name: hashicorp/terraform:0.12.12
http://3.88.51.197/root/terraform_test/pipelines (This is my personal Gitlabci)
I created a ci/cd pipeline to automatically deploy terraform code, set github webhook, once there's a push action happened,it will trigger automatic deployment.
Including verificate, plan, apply, and for destroy, I set the manual trigger. So destroy action won't trigger automatically.
About the variable set in the gitlabci settings variable for safe keeping
If you don't want to use ci/cd, also can deploy it manually.
Deploy code By manually
If you don't want to use ci/cd tools can deploy it by manually.
$ git clone https://github.com/shiboyan/terraform_test.git
$cd terraform_testCreate a file name xxx.tfvars, For example: auto-demo.tfvars
Please note that we don't need auto-demo.tfvars this file for cicd pipeline, because we will put all the variables in cicd setting（In encrypt type),and then the file will be generated automatically during the deployment of cicd pipeline
# aws-demo.tfvars
availability_zone =["ap-southeast-2a","ap-southeast-2b"]
key_name = "minaterraform"
ec2_count = 2 //number of ec2 instances
private_key_path = "./minaterraform.pem"
environment= "dev"
subnet_cidrs =["10.172.1.0/24","10.172.2.0/24"]
$ terraform init
$ terraform validate -var-file=aws-demo.tfvars
$ terraform plan -var-file=aws-demo.tfvars
$ terraform apply -var-file=aws-demo.tfvarsIf you don't need aws resources, can destroy them.
$ terraform destroy -var-file=aws-demo.tfvars