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Infrastructure as Code with Terraform Orlando Del Aguila GDLJS S02E08

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@orlando @eatcodetravel @eatcodetravel eatcodetravel.com

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www.hashlabs.com

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Infrastructure as Code source: http://www.itnews.com.au/news/facebook-powers-up-arctic-circle-data-centre-346509

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source: http://www.itnews.com.au/news/facebook-powers-up-arctic-circle-data-centre-346509

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“Write and execute code to define, deploy and update infrastructure” IAC / What

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• Ad hoc scripts • Configuration Management • Server Templating • Infrastructure Definition IAC / Types

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Snowflake servers IAC / Why

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Snowflake servers IAC / Why

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Confidence IAC / Why

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Self-service IAC / Why source: https://www.flickr.com/photos/smdevivo/5524665573

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Documentation IAC / Why

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Version Control IAC / Why

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Coding best practices IAC / Why DRY / Testing / ❤

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2016 DevOps Report* IAC / Why • 24x faster to recover from failure • 50% less time to find issues • 200x more deploys • 2.2x engineer happiness** ** Likeliness to recommend their place of work to others * puppet.com/resources/white-paper/2016-state-of-devops-report

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Terraform source: http://no-mans-sky.com/press/sheet.php?p=no_man%27s_sky

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HashiCorp Terraform / What

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Infrastructure definition Terraform / What

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Deterministic execution Terraform / What

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Multi provider support Terraform / What

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Uses HCL as language Terraform / What

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Golang OS Project Terraform / What

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Golang OS Project Terraform / What

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Translates HCL templates into API calls Terraform / How

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Saves current state as a file Terraform / How

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Diffs from the current state to apply changes Terraform / How

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = ["ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" }

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = [“ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" }

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = [“ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" }

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = [“ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" }

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = [“ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" }

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = [“ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" }

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = [“ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" } resource "aws_eip" "example_eip" { instance = "${aws_instance.example.id}" }

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Terraform / Syntax data "aws_ami" "ubuntu" { most_recent = true filter { name = "name" values = [“ubuntu/images/hvm-ssd/ubuntu-trusty-*"] } } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "t2.micro" } resource "aws_eip" "example_eip" { instance = "${aws_instance.example.id}" } // IP of the Bastion EC2 instance output "ip" { value = "${aws_eip.example_eip.public_ip}" }

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Terraform / Syntax ... variable "instance_type" { description = "EC2 instance type" default = "t2.nano" } resource "aws_instance" "example" { ami = "${data.aws_ami.ubuntu.id}" instance_type = "${var.instance_type}" } ...

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Terraform / Syntax / Modules # Create instances module "t2nano" { source = "./aws_instance" instance_type = "t2.nano" } module "t2micro" { source = "./aws_instance" instance_type = "t2.micro" } # Output variables output "t2microip" { value = "${module.t2micro.ip}" } output "t2small" { value = "${module.t2small.ip}" }

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Keep one .tfstate per environment Terraform / Tips

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Use a remote store for your .tfstate file Terraform / Tips

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Store your terraform.tfvars in your remote* Terraform / Tips * this is how we do it, and works for us

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terraform.io/docs github.com/orlando/terraform-intro github.com/hashicorp/terraform github.com/terraform-community-modules github.com/segmentio/terraform-docs Terraform / Resources

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Thanks source: http://no-mans-sky.com/press/sheet.php?p=no_man%27s_sky