k8sハンズオンやってみた

k8s-hands-on-wordpress.yaml

# https://speakerdeck.com/uutarou10/chu-xin-zhe-niyoruchu-xin-zhe-falsetamefalsekuberneteshanzuon
# brew install kubernetes-cli
# kubectl version
## Client Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.3", GitCommit:"b3cbbae08ec52a7fc73d334838e18d17e8512749", GitTreeState:"clean", BuildDate:"2019-11-14T04:24:29Z", GoVersion:"go1.12.13", Compiler:"gc", Platform:"darwin/amd64"}
## Server Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.2", GitCommit:"c97fe5036ef3df2967d086711e6c0c405941e14b", GitTreeState:"clean", BuildDate:"2019-10-15T19:09:08Z", GoVersion:"go1.12.10", Compiler:"gc", Platform:"linux/amd64"}
# brew install minikube
# brew link minikube
# minikube version
## minikube version: v1.5.2
# minikube start
## minikube docker-envは不要だったか?
# eval $(minikube docker-env)
# kubectl apply -f wordpress.yaml
# kubectl get pod
# kubectl port-forward pod/wordpress-84d649c886-p9psb 8080:80 &
## open webbrowser http://localhost:8080
# kubectl port-forward pod/phpmyadmin-7c75788687-mkpxl 8888:80 &
## open webbrowser http://localhost:8888
# kubectl delete -f wordpress.yaml
# minikube stop
# minikube delete
## 所感: apiVersion と selector 云々はハンズオンの記述と異なっていて、異なっている理由と、正解を探るのに苦労した。
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: wordpress
  template:
    metadata:
      labels:
        app: wordpress
        role: database
    spec:
      containers:
        - image: mysql:5.7
          name: mysql
          env:
            - name: MYSQL_ROOT_PASSWORD
              value: hogehoge
---
apiVersion: v1
kind: Service
metadata:
  name: mysql
spec:
  selector:
    app: wordpress
    role: database
  ports:
  - port: 3306
    targetPort: 3306
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: wordpress
spec:
  selector:
    matchLabels:
      app: wordpress
      role: web
  template:
    metadata:
      labels:
        app: wordpress
        role: web
    spec:
      containers:
      - name: wordpress
        image: wordpress
        env:
          - name: WORDPRESS_DB_HOST
            value: mysql
          - name: WORDPRESS_DB_PASSWORD
            value: hogehoge
---
apiVersion: v1
kind: Service
metadata:
  name: wordpress
spec:
  selector:
    app: wordpress
    role: web
  ports:
  - port: 80
    targetPort: 80
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: phpmyadmin
spec:
  selector:
    matchLabels:
      app: wordpress
      role: phpmyadmin
  template:
    metadata:
      labels:
        app: wordpress
        role: phpmyadmin
    spec:
      containers:
      - name: phpmyadmin
        image: phpmyadmin/phpmyadmin:latest
        env:
          - name: PMA_HOST
            value: mysql
          - name: PMA_USER
            value: root
          - name: PMA_PASSWORD
            value: hogehoge
---
apiVersion: v1
kind: Service
metadata:
  name: phpmyadmin
spec:
  selector:
    app: phpmyadmin
  ports:
  - port: 80
    targetPort: 80
---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: wordpress
spec:
  rules:
  - host: wordpress.local.sasasin.net
    http:
      paths:
        - backend:
            serviceName: wordpress
            servicePort: 80