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QUICKSTART.md

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Quickstart

Cloud Requirements

  • At least one AWS Account with AdministratorAccess
  • AWS CLI configured with the account you want to deploy into
  • An AWS route53 domain name if you want default Ingresses to just work. box. It is fine without it but External DNS and Cert Manager won't work out of the box

Dependencies

Dependencies can be found in .tools-version this file is compatible with asdf which is not a hard requirement but our way of managing required tooling.

Enabling plugins

for p in $(cut -d " " -f1 .tool-versions); do asdf plugin-add $p; done

Installing tools

asdf install

Create repository structure

  1. Clone the template on Github

  2. In ./terragrunt/live/global_values adapt to your requirements

---
# Your AWS Account ID
aws_account_id: 161285725140

# Prefix to be added to created resources
prefix: pio-teks

# AWS S3 bucket region where Terraform will store state
tf_state_bucket_region: eu-west-1

# Github username or organization, this can be used by Flux2 to auto configure
# Github bootstrap
github_owner: particuleio
  1. In ./terragrunt/live/production/env_values.yaml adapt to your requirements, it is also possible to override variables defined in global_values.yaml here, for example when using different AWS account per environment. Here we will use only one AWS account and deploy the production environment.
---
# Environment name, normally equal to folder name, here it is production by default
env: production

# Default domain name that will be used by default ingress resources, use a registered Route53 domain in the AWS Account
default_domain_name: clusterfrak-dynamics.io
  1. In terragrunt/live/production/eu-west-1/region_values.yaml there is nothing to change if you want to use the example region (eu-west-1), if you want to use another region, just rename the folder, for example us-east-1 and then edit region_values.yaml to suit your need.
---
aws_region: eu-west-1

  1. In terragrunt/live/production/eu-west-1/clusters/demo/component_values.yaml, name will be used to compute full cluster name, the default is $PREFIX-$ENV_$NAME which is defined here. It is of course possible to override default variable inside the respective terragrunt.hcl files

  2. You can edit each modules individually inside terragrunt/live/production/eu-west-1/clusters/demo. For official modules, please refer to their respective documentations. For eks-addons you can check the module here.

  3. Configure Flux2 Gitops in terragrunt/live/production/eu-west-1/clusters/demo/eks-addons/terragrunt.hcl or disable it if needed, you will need a GITHUB_TOKEN available from you terminal. Also to configure it according the your repository name.

  # For this to work:
  # * GITHUB_TOKEN should be set
  flux2 = {
    enabled               = true
    target_path           = "gitops/clusters/${include.root.locals.merged.env}/${include.root.locals.merged.name}"
    github_url            = "ssh://[email protected]/${include.root.locals.merged.github_owner}/teks"
    repository            = "teks"
    branch                = "main"
    repository_visibility = "public"
    version               = "v0.25.3"
    auto_image_update     = true
  }
  1. Make sure you AWS credential are correctly loaded inside your terminal, then from the terragrunt/live/production/eu-west-1/clusters/demo.
terragrunt run-all apply


INFO[0000] The stack at /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo will be processed in the following order for command apply:
Group 1
- Module /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo/encryption-config
- Module /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo/vpc

Group 2
- Module /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo/eks
- Module /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo/vpc-endpoints

Group 3
- Module /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo/aws-auth
- Module /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo/eks-addons-critical

Group 4
- Module /home/klefevre/git/archifleks/teks-quickstart/terragrunt/live/production/eu-west-1/clusters/demo/eks-addons
  1. Load Kubeconfig, you still need to have the AWS CLI loaded and configure with the right account
export KUBECONFIG=$PWD/eks/kubeconfig
  1. Check out ingress objects
k get ingress --all-namespaces
NAMESPACE    NAME                            CLASS   HOSTS                               ADDRESS                                                                         PORTS     AGE
monitoring   kube-prometheus-stack-grafana   nginx   telemetry.clusterfrak-dynamics.io   k8s-ingressn-ingressn-d192ac60af-c080dd921f212013.elb.eu-west-1.amazonaws.com   80, 443   12m
  1. Log into Grafana. From the eks-addons folder
terragrunt output grafana_password
"PASSWORD"

  1. Use the cluster to do stuff you normally do on a Kubernetes Cluster

  2. To destroy everything simply run terragrunt run-all destroy --terragrunt-exclude-dir=aws-auth from the eu-west-1/clusters/demo folder.

⚠️ there is an issue with flux 2 namespace not terminating correctly because CRDs are deleted before namespace is terminated. To unstuck flux-system namespace deletion, you can run the following command:

kubectl get namespace "flux-system" -o json | tr -d "\n" | sed "s/\"finalizers\": \[[^]]\+\]/\"finalizers\": []/" | kubectl replace --raw /api/v1/namespaces/flux-system/finalize -f -
  1. Verify everything is deleted on AWS console (I just did not want the quickstart to end on an odd number)