Rich Burroughs gives an overview of Terraform and how it compares to Puppet. Terraform is HashiCorp's infrastructure provisioning tool that uses a declarative configuration language and resource graph to manage cloud infrastructure. It is not a configuration management tool like Puppet, but can be used to provision infrastructure before using Puppet to configure it. The presentation demonstrates how to install Terraform, configure providers for cloud platforms, define resources, handle dependencies between resources, and use provisioners like remote-exec to run Puppet apply after provisioning.

1. Terraform and Puppet
Rich Burroughs
@richburroughs - Portland Puppet User's Group

2. About me
• SRE at Puppet since September
• Previously a Puppet user for about 4 years
• Not a Terraform expert
• I hate bullet points
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3. @richburroughs - Portland Puppet User's Group

4. @richburroughs - Portland Puppet User's Group

5. Terraform is HashiCorp's provisioning tool
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6. @richburroughs - Portland Puppet User's Group

7. @richburroughs - Portland Puppet User's Group

8. "de-facto provisioning tool"
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9. Not a configuration management tool
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10. Terraform is like Puppet for provisioning
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11. Terraform is declarative
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12. Terraform has a DSL
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13. Terraform has a resource graph
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14. Terraform does not have a RAL
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15. Installing
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16. @richburroughs - Portland Puppet User's Group

17. alias tf='terraform'
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18. Providers
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19. • AWS
• Azure
• GCP
• OpenStack
• GitHub
• Pager Duty
• many more
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20. provider "openstack" {
user_name = "admin"
tenant_name = "admin"
password = "pwd"
auth_url = "http://myauthurl:5000/v2.0"
}
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21. Connection data
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22. • tfvars
• Environment variables
• AWS credentials file
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23. source ~/.openrc.sh
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24. provider "openstack" {}
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25. Resources
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26. resource "openstack_compute_instance_v2" "web1" {
name = "web1"
image_name = "${var.image}"
flavor_name = "${var.flavor}"
key_pair = "${var.key_pair}"
security_groups = "${var.security_groups}"
network {
name = "${var.network_name}"
}
}
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27. variable "image" {
default = "centos_7"
}
variable "flavor" {
default = "g1.medium"
}
variable "key_pair" {
default = "my_key"
}
variable "network_name" {
default = "network1"
}
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28. Dependencies
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29. resource "openstack_compute_floatingip_v2" "fip_1" {
pool = "${var.fip_pool}"
}
resource "openstack_compute_floatingip_associate_v2" "fip_assoc_1" {
floating_ip = "${openstack_compute_floatingip_v2.fip_1.address}"
instance_id = "${openstack_compute_instance_v2.web1.id}"
}
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30. depends_on
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31. Provisioners
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32. • remote-exec
• local-exec
• file
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33. remote-exec could be "puppet apply"
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34. State
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35. • Local JSON by default
• Consul
• Other backends (Dynamo DB)
• Atlas (Terraform Enterprise)
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36. Commands
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37. terraform fmt
terraform show
terraform plan
terraform apply
terraform destroy
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38. Demo
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