k3s 速通

配置 ssh login

• Windows

type $env:USERPROFILE\.ssh\id_rsa.pub | ssh ubuntu@43.154.121.203 "cat >>.ssh/authorized_keys"

• MacOS / Linux

ssh-copy-id -i ~/.ssh/id_rsa.pub ubuntu@43.154.121.203

login test

 ssh ubuntu@43.154.121.203

install docker

sudo apt install docker.io

docker 镜像加速

https://gist.github.com/y0ngb1n/7e8f16af3242c7815e7ca2f0833d3ea6

install docker-compose

• MacOS / Linux

sudo curl -L "https://github.com/docker/compose/releases/download/v2.32.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

chmod +x /usr/local/bin/docker-compose

install k3s

curl -sfL https://rancher-mirror.rancher.cn/k3s/k3s-install.sh | INSTALL_K3S_MIRROR=cn sh -

install helm

curl -fsSL -o get_helm.sh https://files.m.daocloud.io/raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
chmod 700 get_helm.sh
./get_helm.sh

fix: Helm CMD Error: INSTALLATION FAILED: Kubernetes cluster unreachable: Get "http://localhost:8080/version": dial tcp 127.0.0.1:8080: connect: connection refused

临时解决

export KUBECONFIG=/etc/rancher/k3s/k3s.yaml

编辑/etc/profile

vim /etc/profile

export KUBECONFIG=/etc/rancher/k3s/k3s.yaml

source /etc/profile

添加 Helm 仓库并更新

• 添加 Rancher Helm 仓库：

helm repo add rancher-latest https://releases.rancher.com/server-charts/latest

helm repo update

• create namespace

kubectl create namespace cattle-system

kubectl describe pod rancher-55769c4668-5ldt2 -n cattle-system

• install cert-manager 安装 cert-manager，Rancher 需要它来处理证书：

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.13.1/cert-manager.yaml

等待 cert-manager 部署完成

kubectl get pods --namespace cert-manager

所有 Pod 都应处于 Running 状态。

• install rancher

helm install rancher rancher-latest/rancher \
  --namespace cattle-system \
  --set hostname=rancher.pursue.pub

• uninstall rancher

helm uninstall rancher -n cattle-system

cat << 'EOF' > /etc/profile.d/k8s.sh
export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
export KUBECONFIG=/etc/rancher/k3s/k3s.yaml

source <(kubectl completion bash)
alias k=kubectl
complete -o default -F __start_kubectl k
EOF

source /etc/profile.d/k8s.sh