Add Terraform cheatsheet

README.md

@@ -225,7 +225,13 @@ Name | Comments
 
 ## Blogs & News
 
-DevOps & Software Engineering related blogs
+My top picks:
+
+Name | Description
+:------|:------:
+[Codefresh Blog](https://codefresh.io/blog) | Probably best GitOps content out there
+
+Other DevOps & Software Engineering related blogs
 
 Name | Description
 :------|:------:
@@ -405,6 +411,7 @@ Note: "Provisioning" tools can be used to perform configuration management to so
 
 ## More Infra & DevOps projects
 
+<p align="center"><a href="https://github.com/bregman-arie/sre-checklist"><img width="500px" src="images/sre_checklist.png"/></a></p>
 <p align="center"><a href="https://github.com/bregman-arie/howtheydevops"><img src="images/how_they_devops.png"/></a></p>
 <p align="center"><a href="https://github.com/bregman-arie/devops-exercises"><img src="images/devops_exercises.png"/></a></p>
 <p align="center"><a href="https://github.com/bregman-arie/infraverse"><img src="images/infraverse.png"/></a></p>

resources/argocd.md

@@ -22,3 +22,7 @@ argocd app create {APP NAME} \
 * sync app: `argocd app sync <APP NAME>`
 * app history: `argocd app history <APP NAME>`
 * delete app: `argocd app delete <APP NAME>`
+
+* Add cluster: `argocd cluster add CLUSTER`
+* List clusters: `argocd cluster list`
+* Remove cluster: `argocd cluster rm CLUSTER

resources/chaos_engineering.md

@@ -0,0 +1,9 @@
+# Chaos Engineering
+
+## Platforms and Services
+
+* https://www.gremlin.com
+
+## Resources
+
+* Diagram for tracking Chaos Engineering state: http://coggle.it/diagram/WiKceGDAwgABrmyv/0a2d4968c94723e48e1256e67df51d0f4217027143924b23517832f53c536e62

resources/kubernetes.md

@@ -200,3 +200,23 @@ krmgf nginx-8jk71    # kill pod nginx-8jk71 using grace period 0 and force
 ### Monitoring
 
 * Install metrics-server using Minikube: `minikube addons enable metrics-server`
+
+### Secrets
+
+* Install Bitnami Sealed secrets controller
+
+```
+helm repo add sealed-secrets https://bitnami-labs.github.io/sealed-secrets
+helm repo update
+helm install sealed-secrets-controller sealed-secrets/sealed-secrets
+```
+
+* sealed-secrets binary: `https://github.com/bitnami-labs/sealed-secrets/releases`
+
+* encrypt secret in yaml or json format: `kubeseal -n my-namespace <.db-creds.yml> db-creds.json`
+* apply secret on the cluser: `kubectl apply -f db-creds.json -n my-namespace`
+
+### Kustomize
+
+* Generate customized YAML file(s): `kustomize build name_of_application`
+* Apply generated customized YAML file(s) to the cluster: `kustomize build name_of_application`

resources/terraform.md

@@ -5,12 +5,13 @@
 https://project-awesome.org/shuaibiyy/awesome-terraform
 [Terraform Script Builder](https://terraparty.com) | export valid Terraform scripts using UI
 
-## Cloud
+## Projects
 
 Name | Comments
 :------|:------:
 [terraformer](https://github.com/GoogleCloudPlatform/terraformer) | "A CLI tool that generates tf/json and tfstate files based on existing infrastructure (reverse Terraform)."
 [terraforming](https://github.com/dtan4/terraforming) | "Export existing AWS resources to Terraform style (tf, tfstate)"
+[terrascan](https://github.com/tenable/terrascan) | "Detect compliance and security violations across Infrastructure as Code to mitigate risk before provisioning cloud native infrastructure"
 
 ### Best Practices
 
@@ -21,3 +22,44 @@ Name | Comments
 * Backup it regularly so you can roll-back easily when needed 
 * Store it in remote shared storage. This is especially needed when working in a team and the state can be updated by any of the team members
 * Enabled versioning if the storage where you store the state file, supports it. Versioning is great for backups and roll-backs in case of an issue.
+
+### Cheat Sheet
+
+* Initialize terraform: `terraform init`
+* See what Terraform will execute if running apply: `terraform plan`
+* Apply Terraform configuration/code: `terraform apply`
+* Cleanup, remove Terraform generated resources: `terraform destroy`
+
+* Dependency graph: `terraform graph`
+
+#### State
+
+* Show state: `terraform show`
+* List resources from the state: `terraform state list`
+* Rename resource: `terraform state mv`
+* Import existing infrastructure into state: `terraform import`
+
+#### Variables
+
+* Pass var: `terraform -var`
+* Pass vars file: `terraform -var-file`
+
+* List all outputs: `terraform output`
+* Get specific output: `terraform output <OUTPUT_VAR>`
+
+#### Data sources
+
+* Get data: `data.<PROVIDER_AND_TYPE>.<NAME>.<ATTRBIUTE>`
+
+#### Backends
+
+* Use variables in a remote backend: `terraform init -backend-config=some_backend_partial_conf.hcl`
+
+#### Workspaces
+
+* Create a new workspace: `terraform workspace new <WORKSPACE_NAME>`
+* Show current workspace: `terraform workspace show`
+
+#### Productivity
+
+* Console: `terraform console`