[BOAZ BASE] 쿠버네티스

> /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" > echo 'export PATH=/opt/homebrew/bin:$PATH' >> ~/.zshrc > source ~/.zshrc

> brew install kubernetes-cli

> brew install --cask minikube

> minikube version

> minikube start 😄 Darwin 12.3 (arm64) 의 minikube v1.31.2 🎉 minikube 1.32.0 이 사용가능합니다! 다음 경로에서 다운받으세요: https://github.com/kubernetes/minikube/releases/tag/v1.32.0 💡 해당 알림을 비활성화하려면 다음 명령어를 실행하세요. 'minikube config set WantUpdateNotification false' ✨ 기존 프로필에 기반하여 docker 드라이버를 사용하는 중 👍 minikube 클러스터의 minikube 컨트롤 플레인 노드를 시작하는 중 🚜 베이스 이미지를 다운받는 중 ... 🤷 docker "minikube" container is missing, will recreate. 🔥 Creating docker container (CPUs=2, Memory=4000MB) ... 🐳 쿠버네티스 v1.27.4 을 Docker 24.0.4 런타임으로 설치하는 중 ▪ 인증서 및 키를 생성하는 중 ... ▪ 컨트롤 플레인이 부팅... ▪ RBAC 규칙을 구성하는 중 ... 🔗 Configuring bridge CNI (Container Networking Interface) ... 🔎 Kubernetes 구성 요소를 확인... ▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5 ▪ Using image docker.io/kubernetesui/dashboard:v2.7.0 ▪ Using image docker.io/kubernetesui/metrics-scraper:v1.0.8 💡 Some dashboard features require the metrics-server addon. To enable all features please run: minikube addons enable metrics-server 🌟 애드온 활성화 : storage-provisioner, default-storageclass, dashboard 🏄 끝났습니다! kubectl이 "minikube" 클러스터와 "default" 네임스페이스를 기본적으로 사용하도록 구성되었습니다.

> minikube dashboard

> git clone https://github.com/sunnyineverywhere/boaz-k8s-scripts.git

apiVersion: apps/v1 kind: Deployment metadata: name: hello-k8s labels: app: hello-k8s spec: replicas: 1 selector: matchLabels: app: hello-k8s template: metadata: labels: app: hello-k8s spec: containers: - name: hello-k8s image: sunnyineverywhere/hell-minikube ports: - containerPort: 8080

# kubectl apply -f {yaml file name} > kubectl apply -f hello-deployment.yaml => deployment.apps/hello-k8s created

> kubectl get deployments NAME READY UP-TO-DATE AVAILABLE AGE hello-k8s 0/1 1 0 45s

apiVersion: v1 kind: Service metadata: name: hello-k8s namespace: default labels: app: hello-k8s spec: selector: app: hello-k8s ports: - protocol: TCP port: 8080 nodePort: 30090 type: NodePort

> kubectl apply -f hello-service.yaml

> kubectl get service NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE hello-k8s NodePort 10.99.251.7 <none> 8080:30090/TCP 16s kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 5h11m

> minikube service hello-k8s |-----------|-----------|-------------|---------------------------| | NAMESPACE | NAME | TARGET PORT | URL | |-----------|-----------|-------------|---------------------------| | default | hello-k8s | 8080 | http://192.168.49.2:30090 | |-----------|-----------|-------------|---------------------------| 🏃 Starting tunnel for service hello-k8s. |-----------|-----------|-------------|------------------------| | NAMESPACE | NAME | TARGET PORT | URL | |-----------|-----------|-------------|------------------------| | default | hello-k8s | | http://127.0.0.1:50287 | |-----------|-----------|-------------|------------------------| 🎉 Opening service default/hello-k8s in default browser... ❗ Because you are using a Docker driver on darwin, the terminal needs to be open to run it.

> kubectl delete deploy --all

> swapoff -a > ip link > sudo cat /sys/class/dmi/id/product_uuid

> sudo apt update && sudo apt install -y apt-transport-https curl > curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - OK cat << EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list > deb http://apt.kubernetes.io/ kubernetes-xenial main > EOF > sudo apt-get update

> sudo apt install -y kubelet=1.18.15-00 kubeadm=1.18.15-00 kubectl=1.18.15-00 docker.io > kubectl version Client Version: version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.15", GitCommit:"73dd5c840662bb066a146d0871216333181f4b64", GitTreeState:"clean", BuildDate:"2021-01-13T13:22:41Z", GoVersion:"go1.13.15", Compiler:"gc", Platform:"linux/amd64"} The connection to the server localhost:8080 was refused - did you specify the right host or port? > kubeadm version kubeadm version: &version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.15", GitCommit:"73dd5c840662bb066a146d0871216333181f4b64", GitTreeState:"clean", BuildDate:"2021-01-13T13:20:05Z", GoVersion:"go1.13.15", Compiler:"gc", Platform:"linux/amd64"} sudo apt-mark hold kubelet kubeadm kubectl docker.io cat << EOF | sudo tee /etc/sysctl.d/k8s.conf > net.bridge.bridge-nf-call-ip6tables = 1 > net.bridge.bridge-nf-call-ip6tables = 1 > net.ipv4.ip_forware = 1 > EOF

> sudo docker info |grep Cgroup Cgroup Driver: cgroupfs Cgroup Version: 1

> sudo vim /lib/systemd/system/docker.service ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --exec-opt native.cgroupdriver=systemd

> sudo systemctl daemon-reload > sudo systemctl restart docker

> sudo kubeadm init --kubernetes-version=1.18.15 --pod-network-cidr=192.168.0.0/16 --apiserver-cert-extra-sans={10.1.1.10,13.125.131.247} --ignore-preflight-errors=NumCPU Your Kubernetes control-plane has initialized successfully! To start using your cluster, you need to run the following as a regular user: mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config You should now deploy a pod network to the cluster. Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at: https://kubernetes.io/docs/concepts/cluster-administration/addons/ Then you can join any number of worker nodes by running the following on each as root: kubeadm join 172.31.14.110:6443 --token dr69f9.vlr5chhbs2po04jf \ --discovery-token-ca-cert-hash sha256:e2270bc7f371c072f1dce624768c3dd2fc34803d8b462e8b2ceacf0947e1d6fb

> kubectl get nodes NAME STATUS ROLES AGE VERSION ip-172-31-14-110 NotReady master 62s v1.18.15

> kubectl apply -f https://docs.projectcalico.org/v3.11/manifests/calico.yaml

> sudo kubeadm join 172.31.14.110:6443 --token dr69f9.vlr5chhbs2po04jf \ --discovery-token-ca-cert-hash sha256:e2270bc7f371c072f1dce624768c3dd2fc34803d8b462e8b2ceacf0947e1d6fb --ignore-preflight-errors=all