Continuously deploying terraform script with Gitlab CI.

This talk introduces how to use Gitlab CI to manage complex terraform codebases with ease.

Transcript

2. Terraform + Gitlab CI Continuously deploying terraform script with Gitlab CI.
3. Site Reliability Engineer at Westwing HashiCorp Certified: Terraform Associate AWS Community Builders (Container) he/him @_hydeenoble Idowu Emehinola
4. Terraform. (Re)introducing Terraform 01
5. Terraform Terraform is an open-source infrastructure as code software tool that provides a consistent CLI workflow to manage hundreds of cloud services. Terraform codifies cloud APIs into declarative configuration files.
6. Terraform Modules A terraform module can be seen as a folder that contains multiple resources that are used together. Modules can be used to create lightweight abstractions, so that you can describe your infrastructure in terms of its architecture, rather than directly in terms of physical objects.
7. Terraform Workspaces Terraform workspaces allow you to manage different environments for your infrastructure without having to duplicate your configuration files in separate folders. For example, if you have one cloud project per environment (development, staging, production), terraform workspace can help you manage the resources for each project in a seamless way so that each project will get the same configuration without sharing any resources.
8. Terraform Workspaces
9. Terraform code base Complexity Terraform scripts can become larger in no time. 02
10. CODE EDITOR Small-sized terraform script. . ├── main.tf ├── outputs.tf └── variables.tf 0 directories, 3 files
11. CODE EDITOR Medium-siz ed terraform codebase. Infrastructure for different environments would be managed using terraform workspace. . ├── main.tf ├── modules │ └── module-1 │ ├── main.tf │ ├── outputs.tf │ └── variables.tf ├── outputs.tf └── variables.tf 2 directories, 6 files
12. CODE EDITOR Large-sized terraform codebase. Infrastructure for different environments would be managed using terraform workspace. . ├── applications │ ├── app-1 │ │ ├── main.tf │ │ ├── outputs.tf │ │ └── variables.tf │ └── app-2 │ ├── main.tf │ ├── outputs.tf │ └── variables.tf └── modules └── module-1 ├── main.tf ├── outputs.tf └── variables.tf 5 directories, 9 files
13. Deploying with Gitlab CI Deploying Infrastructure with gitlab 03
14. Gitlab CI Stages Terraform Validate This gitlab CI stage tries to check if terraform codebase configuration is valid. Terraform format check. This gitlab CI stage tries to recursively check if the terraform codebase configuration is in standard style. Terraform Apply This gitlab CI stage attempts to create or update infrastructure. Terraform Plan. This gitlab CI stage shows changes required by the current configuration
15. Gitlab CI Stages
16. Demo 04
17. Summary In summary, gitlab CI can be easily configured to deploy very complex terraform scripts. 05
18. Thank You @_hydeenoble Link to Gitlab Repository