Kubernetes WordPress + MySQL helm chart

The simplest example of a helm chart for WordPress and MySQL (chart directory).

Also, original manifests provided for using via kubectl (original-manifests directory).

This demo was used with GCP Kubernetes cluster.

Dependencies

gcloud (installation guide is here)
kubectl (installation guide is here)
helm (installation guide is here)

Setup cluster

To start using gcloud utility execute next command

gcloud init

Execute the next command to sign in

gcloud auth login

Select your GCP project (if you have one) or create a new one (you can do it via GCP Web Interface)

gcloud projects list
gcloud config set project <YOUR_PROJECT_ID>

Finally, we can setup demo cluster

gcloud container clusters create demo-cluster --zone europe-west4-a

kubectl will be automatically configured to your created cluster

You can check your demo-cluster status with next command

kubectl get nodes

Usage

Clone this git repository

git clone git@github.com:ltblueberry/wordpress-mysql-helm-chart.git

Execute next commands from repository directory

check that all templates are valid

helm template .

install chart

helm install . --generate-name

Check your WordPress service External IP address with next command (may take some time)

kubectl get service -n demo-application

By-default namespace that used in the chart called demo-application. If you changed it, make sure you define the proper namespace in kubectl get command.

Now you can check this IP address with web-browser

Helm Variables

Defined in values.yaml

Name	Default Value	Difinition
`namespace`	`demo-application`	Kubernetes namespace

`wordpress`:

Name	Default Value	Difinition
`deployment.image`	`wordpress:4.8-apache`	Docker image for Wordpress
`deployment.replicaCount`	`1`	Number of Pods to run
`service.type`	`LoadBalancer`	Kubernetes Service type
`service.port`	`80`	Publishing port

`mysql`:

Name	Default Value	Difinition
`deployment.image`	`mysql:5.6`	Docker image for MySQL
`deployment.replicaCount`	`1`	Number of Pods to run
`service.type`	`ClusterIP`	Kubernetes Service type
`service.port`	`3306`	Publishing port
`pvc.accessMode`	`ReadWriteOnce`	PVC Access mode
`pvc.storage`	`2Gi`	PVC Storage size

Uninstall

Execute the next command to get the list of helm releases

helm list

Execute the next command to uninstall helm release by RELEASE_NAME

helm uninstall RELEASE_NAME

License

MIT License

ltblueberry/wordpress-mysql-helm-chart