kind(kube in docker) instroduction

Linux:

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curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"

sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

#check install 

kubectl version --client

curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.10.0/kind-linux-amd64

chmod +x ./kind

sudo mv kind /usr/local/bin/

#check install 

kind version

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kind create cluster --name=kind2 --config=kind-config.yaml

-------------------------kind-config.yaml: 

# this config file contains all config fields with comments

# NOTE: this is not a particularly useful config file

kind: Cluster

apiVersion: kind.x-k8s.io/v1alpha4

# patch the generated kubeadm config with some extra settings

kubeadmConfigPatches:

- |

  apiVersion: kubelet.config.k8s.io/v1beta1

  kind: KubeletConfiguration

  evictionHard:

    nodefs.available: "0%"

# patch it further using a JSON 6902 patch

kubeadmConfigPatchesJSON6902:

- group: kubeadm.k8s.io

  version: v1beta2

  kind: ClusterConfiguration

  patch: |

    - op: add

      path: /apiServer/certSANs/-

      value: my-hostname

# 1 control plane node and 3 workers

nodes:

# the control plane node config. default one node hosting a control plane

- role: control-plane

  kubeadmConfigPatches:

  - |

    kind: InitConfiguration

    nodeRegistration:

      kubeletExtraArgs:

        node-labels: "my-label=true"

  extraMounts:

  - hostPath: /home/test-user/data/files/

    containerPath: /files

  extraPortMappings:

  - containerPort: 80

    hostPort: 8000

    listenAddress: "0.0.0.0" # Optional, defaults to "0.0.0.0"

    #protocol: udp # Optional, defaults to tcp

# the three workers

- role: worker

- role: worker

- role: worker