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单机安装k8s

To install Kubernetes on a single machine, you can follow the steps below:

  1. Install Docker:
  1. sudo apt-get update
  2. sudo apt-get install docker.io
  1. Install kubeadm, kubelet and kubectl:
  1. sudo apt-get update && sudo apt-get install -y apt-transport-https curl
  2. curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
  3. cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list
  4. deb https://apt.kubernetes.io/ kubernetes-xenial main
  5. EOF
  6. sudo apt-get update
  7. sudo apt-get install -y kubelet kubeadm kubectl
  1. Initialize the cluster:
  1. sudo swapoff -a # if swap is enabled, disable it to prevent issues with kubelet.
  2. sudo kubeadm init --pod-network-cidr=10.244.0.0/16 # replace pod network CIDR as per your requirement.
  1. Set up kubectl configuration:
  1. mkdir -p $HOME/.kube
  2. sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  3. sudo chown $(id -u):$(id -g) $HOME/.kube/config
  1. Deploy a pod network to the cluster:

You can choose from different pod network providers like Flannel, Calico, etc.

For example, to deploy Flannel:

  1. kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
  1. Check if all nodes are ready:
  1. kubectl get nodes

You should see one node in Ready state.

That’s it! Your Kubernetes cluster is now set up on a single machine!

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