[WIP] Argocd deployment and management using terraform, kustomize and bash

Example configuration and implementation how the deployment of argocd, registration of k8s clusters, projects and applications.

Requires some preexisting infrastructure on GCP:

• project where to deploy argocd
• project where to deploy gke cluster or existing gke cluster
• setup terraform for managing gcp (https://cloud.google.com/community/tutorials/managing-gcp-projects-with-terraform)
• repository with manifests/kustomization files which argocd can track changes on

Argocd

based on: https://argoproj.github.io/argo-cd/operator-manual/declarative-setup/

Folders:

argocd

Script:

./deploy-argocd-server.sh

Example:

./deploy-argocd-server.sh argocd-ci-cd-project

• To deploy argocd server, you need to configure # FIX ME variables, existing application repo with manifests or kustomization files is expected

• for google SSO dex secrets have to be setup

Register gke cluster to running Argocd

Folders:

argocd-register-k8s-cluster
gcp-cluster-example

Script:

./deploy-example-cluster.sh
./register-example-cluster.sh

Example:

./deploy-example-cluster.sh dev-cluster project-id-123
./register-example-cluster.sh dev-cluster argocd-ci-cd-project

Register using terraform module usage:

module "cluster-argocd-registration" {
  source = "../argocd-register-k8s-cluster"
  admin_project_id = "${var.admin_project_id}"
  region = "${var.region}"
  zone = "${var.zone}"
  target_cluster_endpoint = "${data.google_container_cluster.primary.endpoint}"
  target_cluster_ca = base64decode(data.google_container_cluster.primary.master_auth[0].cluster_ca_certificate)
  target_cluster_name = "${data.google_container_cluster.primary.endpoint}"
  target_sa_token = "${var.primary_cluster_token}"
}

• to add cluster where argocd can deploy applications you first need to create a gke cluster (check gcp-cluster-example)

Add argocd project

Folders:

argocd-project-add

Scripts:

./deploy-argocd-project.sh

Example:

./deploy-argocd-project.sh dev-cluster argocd-ci-cd-project

• please see the structure of adding project

Add argocd application

Folders:

argocd-app-deploy
argocd-apps

Scripts:

./deploy-app.sh

Example:

./deploy-app.sh redis dev-cluster <cluster-endpoint> argocd-ci-cd-project 

• deploys application from argocd-apps folder
• there is example structure for redis deployment
• the loading of the apps is expected from repository where argocd is tracking the changes