swipswaps/blog-sample

An wordpress sample with GKE Cluster

Wordpress Blog

A wordpress blog sample and deploy to kubernetes.

Prerequisites

Please install this dependency below, i'm using macOS as my workstation.

• kubectl, https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-with-homebrew-on-macos
• terraform, https://learn.hashicorp.com/terraform/getting-started/install.html
• gcloud sdk, https://cloud.google.com/sdk/docs/quickstart-macos
• helm, https://docs.helm.sh/using_helm/#from-homebrew-macos

Prepare GKE Cluster

Service Account

I'am using spessific account to deploy the cluster. To create the service account, from google cloud console, choose IAM & Admin > Service Accounts, and click Create Service Account. Name the service account terraform and assign it the Project Editor role. Download a JSON file and put it to file gke-cluster/credential/account.json.

I am using terraform to build the GKE Cluster. From gke-cluster directory, you can follow this step:

• Make sure change the project name in file main.tf to your project name

provider "google" {
  credentials = "${file("./credential/account.json")}"
  project     = "<your project name>"
  region      = "asia-southeast1"
}

• Initialize the terraform, download and install all dependency

terraform init

• Review the execution plan

terraform plan

• Build the GKE Cluster

terraform apply

You need to waiting until terraform finish to build the cluster, it give the progress log output. After the cluster created, you can access and get the config to your kubeconfig.

• Get the cluster list on your GKE

gcloud container clusters list

• Get your cluster credential (in my case, the cluster name is gke-cluster). Kubeconfig entry will add to your kubectl config automatically

gcloud container clusters get-credentials gke-cluster --zone=asia-southeast1-a

Until this step, the cluster shoud be ready and you can verify by execute kubectl cluster-info

Because we're deploying the wordpress blog using helm, we need to deploy tiller to the kubernetes cluster with this step:

• Create tiller service account that will used by tiller

kubectl create -f tiller.yaml

• Deploy tiller with spessific service account

helm init --service-account tiller 

Deploy Blog

To deploy the blog, execute this command:

./blog.sh deploy

Scale Up Blog

To scale the blog, execute this command:

./blog.sh scale <number of replica>

Delete Up Blog

To scale the blog, execute this command:

./blog.sh delete