master1

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.6.1/components.yaml


kubectl edit deployments.apps -n kube-system metrics-server
--kubelet-insecure-tls

kubectl top node
kubectl top pod

multi 키고

- nfs
# yum install -y nfs-utils.x86_64

master1

mkdir /nfs_shared
chmod 777 /nfs_shared/

# echo '/nfs_shared 10.178.0.0/20(rw,sync,no_root_squash)' >> /etc/exports
# systemctl enable --now nfs

cd workspace/
k get all 
k delete all --all

# vi nfs-pv.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv
spec:
  capacity:
    storage: 100Mi
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  nfs:
    server: 10.178.0.2
    path: /nfs_shared
    
k apply -f nfs-pv.yaml
k get pv

vi nfs-pvc.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nfs-pvc
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 10Mi
      
# kubectl apply -f nfs-pvc.yaml
# kubectl get pv,pvc   

# vi nfs-pvc-deploy.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nfs-pvc-deploy
spec:
  replicas: 4
  selector:
    matchLabels:
      app: nfs-pvc-deploy

  template:
    metadata:
      labels:
        app: nfs-pvc-deploy
    spec:
      containers:
      - name: nginx
        image: nginx
        volumeMounts:
        - name: nfs-vol
          mountPath: /usr/share/nginx/html
      volumes:
      - name: nfs-vol
        persistentVolumeClaim:
          claimName: nfs-pvc

# kubectl apply -f nfs-pvc-deploy.yaml
# kubectl get pod
# kubectl exec -it nfs-pvc-deploy-76bf944dd5-6j9gf -- /bin/bash
# kubectl expose deployment nfs-pvc-deploy --type=LoadBalancer --name=nfs-pvc-deploy-svc1 --port=80

config

vi configmap-wordpress.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: config-wordpress
  namespace: default
data:
  MYSQL_ROOT_HOST: '%'
  MYSQL_DATABASE: wordpress

# kubectl apply -f configmap-wordpress.yaml
# kubectl describe configmaps config-wordpress

• 민감한 부분은 여기에 담자

vi secret.yaml
apiVersion: v1
kind: Secret
metadata:
  name: my-secret
stringData:
  MYSQL_ROOT_PASSWORD: mode1752
  MYSQL_USER: wpuser
  MYSQL_PASSWORD: wppass

# kubectl apply -f secret.yaml
# kubectl describe secrets my-secret

# vi mysql-pod-svc.yaml
apiVersion: v1
kind: Pod
metadata:
  name: mysql-pod
  labels:
    app: mysql-pod
spec:
  containers:
  - name: mysql-container
    image: mysql:5.7
    envFrom:
    - configMapRef:
        name: config-wordpress
    - secretRef:
        name: my-secret
    ports:
    - containerPort: 3306
---
apiVersion: v1
kind: Service
metadata:
  name: mysql-svc
spec:
  type: ClusterIP
  selector:
    app: mysql-pod
  ports:
  - protocol: TCP
    port: 3306
    targetPort: 3306

# vi wordpress-pod-svc.yaml
apiVersion: v1
kind: Pod
metadata:
  name: wordpress-pod
  labels:
    app: wordpress-pod
spec:
  containers:
  - name: wordpress-container
    image: wordpress
    env:
    - name: WORDPRESS_DB_HOST
      value: mysql-svc:3306
    - name: WORDPRESS_DB_USER
      valueFrom:
        secretKeyRef:
          name: my-secret
          key: MYSQL_USER
    - name: WORDPRESS_DB_PASSWORD
      valueFrom:
        secretKeyRef:
          name: my-secret
          key: MYSQL_PASSWORD
    - name: WORDPRESS_DB_NAME
      valueFrom:
        configMapKeyRef:
          name: config-wordpress
          key: MYSQL_DATABASE
    ports:
    - containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: wordpress-svc
spec:
  type: LoadBalancer
#  externalIPs:
#  - 192.168.56.103
  selector:
    app: wordpress-pod
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80

• worker2에가서 curl ipconfig.io 치고 들어가면
  

• 워드프레스나옴
  

vi mysql-deploy-svc.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-deploy
  labels:
    app: mysql-deploy
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql-deploy
  template:
    metadata:
      labels:
        app: mysql-deploy
    spec:
      containers:
      - name: mysql-container
        image: mysql:5.7
        envFrom:
        - configMapRef:
            name: config-wordpress
	    - secretRef:
            name: my-secret
        ports:
        - containerPort: 3306
---
apiVersion: v1
kind: Service
metadata:
  name: mysql-svc
spec:
  type: ClusterIP
  selector:
    app: mysql-deploy
  ports:
  - protocol: TCP
    port: 3306
    targetPort: 3306

# vi wordpress-deploy-svc.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: wordpress-deploy
  labels:
    app: wordpress-deploy
spec:
  replicas: 1
  selector:
    matchLabels:
      app: wordpress-deploy
  template:
    metadata:
      labels:
        app: wordpress-deploy
    spec:
      containers:
      - name: wordpress-container
        image: wordpress
        env:
        - name: WORDPRESS_DB_HOST
          value: mysql-svc:3306
        - name: WORDPRESS_DB_USER
          valueFrom:
            secretKeyRef:
              name: my-secret
              key: MYSQL_USER
        - name: WORDPRESS_DB_PASSWORD
          valueFrom:
            secretKeyRef:
              name: my-secret
              key: MYSQL_PASSWORD
        - name: WORDPRESS_DB_NAME
          valueFrom:
            configMapKeyRef:
              name: config-wordpress
              key: MYSQL_DATABASE
        ports:
        - containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
  name: wordpress-svc
spec:
  type: LoadBalancer
#  externalIPs:
#  - 192.168.1.102
  selector:
    app: wordpress-deploy
  ports:
  - protocol: TCP
    port: 80
    targetPort: 80
    

namespace

k get ns
k create eeapbh

vi sample-resourcequota.yaml
apiVersion: v1
kind: ResourceQuota
metadata:
  name: sample-resourcequota
  namespace: eeapbh
spec:
  hard:
    count/pods: 5
    
k -n eeapbh apply -f deployment.yaml

k scale deployment nginx-deployment --replicas=6 -n eeapbh

• vi deployment.yaml