CPUの仮想化技術が有効になっているかチェック
$ egrep --color 'vmx|svm' /proc/cpuinfo
必要なパッケージをインストール
$ sudo yum install libvirt libvirt-daemon-kvm qemu-kvm libvirt-client socat
KVMのインストール
$ sudo systemctl enable libvirtd
$ sudo systemctl start libvirtd
$ sudo systemctl status libvirtd
$ sudo virsh net-list | grep default
$ sudo usermod -a -G libvirt $(whoami)
$ newgrp libvirt
Minikubeのインストール
$ curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
$ sudo install minikube /usr/local/bin
デフォルト値の設定
$ minikube config set vm-driver kvm2
$ minikube config set memory 4096
$ minikube config set disk-size 20GB
起動
$ minikube start --kubernetes-version v1.14.8
$ minikube status
kubectlのインストール
$ sudo tee /etc/yum.repos.d/kubernetes.repo <<EOF
[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
EOF
$ sudo yum install kubectl-1.14.8
$ kubectl get pods -A
Ingressのインストール
$ minikube addons enable ingress
$ kubectl get pods -n kube-system | grep ingress
NFSのインストール
$ sudo yum install nfs-utils
$ sudo systemctl enable nfs-server
$ sudo systemctl start nfs-server
$ sudo systemctl status nfs-server
Minikube用の共有ディレクトリの設定
$ sudo mkdir -p /data/minikube
$ sudo chown $(whoami):$(whoami) /data/minikube
$ sudo tee /etc/exports.d/minikube.exports <<EOF
/data/minikube $(minikube ip | cut -d . -f 1-3).0/24(rw,no_root_squash)
EOF
$ sudo exportfs -a
$ showmount -e
MinikubeからNFSへのアクセスを許可
$ sudo firewall-cmd --permanent --new-zone=minikube
$ sudo firewall-cmd --permanent --zone=minikube --set-target=ACCEPT
$ sudo firewall-cmd --permanent --zone=minikube --add-source=$(minikube ip | cut -d . -f 1-3).0/24
$ sudo firewall-cmd --add-service=nfs --zone=minikube --permanent
$ sudo firewall-cmd --reload
$ sudo firewall-cmd --list-all --zone=minikube
PV・PVCの作成
$ tee /tmp/nfs-minikube.yml <<EOF
apiVersion: v1
kind: PersistentVolume
metadata:
name: nfs-minikube
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteMany
persistentVolumeReclaimPolicy: Recycle
storageClassName: slow
mountOptions:
- hard
nfs:
server: $(minikube ip | cut -d . -f 1-3).1
path: "/data/minikube"
---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: nfs-minikube
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 1Gi
storageClassName: slow
EOF
$ kubectl apply -f /tmp/nfs-minikube.yml
$ kubectl get pv nfs-minikube
$ kubectl get pvc nfs-minikube
Nginxをデプロイ
$ tee /tmp/nginx.yml <<EOF
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: nginx
spec:
replicas: 2
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
volumeMounts:
- mountPath: "/usr/share/nginx/html"
name: html
volumes:
- name: html
persistentVolumeClaim:
claimName: nfs-minikube
---
apiVersion: v1
kind: Service
metadata:
name: nginx
spec:
type: NodePort
selector:
app: nginx
ports:
- port: 80
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: ingress
spec:
backend:
serviceName: nginx
servicePort: 80
EOF
$ kubectl apply -f /tmp/nginx.yml
動作確認
ページを用意
$ tee /data/minikube/index.html <<EOF
<html>
<head>
<meta charset="utf-8"/>
</head>
<body>
<div>ようこそ $(whoami) さん</div>
</body>
</html>
EOF
ダッシュボードを開く
$ minikube dashboard &
Ingress のエンドポイントをクリックして別タブに表示されるページを確認
停止
$ minikube stop
$ minikube status
（または）削除
$ minikube delete
$ minikube status