kubernetes-wordpress

Environment

• DigitalOcean
• k8s 1.21.2-do.2

Some config data            (k8s ConfigMaps and Secrets)

MySQL Container             (k8s replicaset)
MySQL Service               (k8s service)
    |
    |
WordPress Container         (k8s deployment)
[ apache ]
    |
    |
DO Loadbalancer             (k8s service)

Preparation

• install command

$ brew install kubernetes-cli doctl

• download config.yaml

$ cp -r ~/Desktop/adachin-wordpress-cluster-kubeconfig.yaml ~/.kube
$ kubectl get services

MySQL Setup

• add root pass (example)

$ echo -n "x97-XinfGkMg" | base64
eDk3LVhpbmZHa01n%
$ vim wordpress/secrets/secrets.yaml
MYSQL_ROOT_PASSWORD: eDk3LVhpbmZHa01n%

• apply

$ cd wordprees
$ kubectl apply -f secrets/secrets.yaml
$ kubectl apply -f manifests/mysql-volume.yaml
$ kubectl apply -f manifests/mysql-replicaset.yaml
$ kubectl apply -f manifests/mysql-service.yaml

• make db

$ kubectl get pods
$ kubectl exec -it mysql-abcde -- bash 
$ mysql -u root -p

> CREATE DATABASE wordpress;

• check out k8s

$ kubectl get pv
$ kubectl get secrets
$ kubectl get replicasets
$ kubectl get pods
$ kubectl describe pod $YOURPOD
$ kubectl logs $YOURPOD

Wordpress Setup

$ kubectl apply -f manifests/wordpress-volume.yaml
$ kubectl apply -f manifests/wordpress.yaml

Load Balancer Setup

https://www.digitalocean.com/docs/kubernetes/how-to/configure-load-balancers/

• certificate check

$ curl -X GET -H "Content-Type: application/json" -H "Authorization: Bearer api-key" "https://api.digitalocean.com/v2/certificates"

• add certificate-ids

$ vim wordpress/manifests/DO-loadbalancer.yaml
service.beta.kubernetes.io/do-loadbalancer-certificate-id: "xxxxxxxxxxxxxx"

$ kubectl apply -f manifests/DO-loadbalancer.yaml

• work!

$ kubectl get services