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This article mainly shows you "how to use kind to build k8s clusters". The content is simple and easy to understand and organized. I hope it can help you solve your doubts. Let Xiaobian lead you to study and learn this article "how to use kind to build k8s clusters".

1 Create a k8s single-node cluster

1.1 creating a cluster

# kind create cluster --name k8s-single-node-cluster

1.2 View cluster information

# export KUBECONFIG="$(kind get kubeconfig-path --name="k8s-single-node-cluster")"

# echo $KUBECONFIG

# kubectl cluster-info

1.3 View cluster node information

# kubectl get nodes

1.4 View cluster component information

# kubectl get cs

1.5 Create deployments and pods

# kubectl run nginx --image=nginx:1.14-alpine --replicas=2

1.6 View pod information

# kubectl get pods

2 Create k8s multi-node cluster (1 master 1 worker)

2.1 Writing a multi-node cluster configuration file

# touch /opt/kind/config/k8s-multi-nodes-cluster.yaml

The document reads as follows:

kind: Cluster

apiVersion: kind.sigs.k8s.io/v1alpha3

nodes:

- role: control-plane

- role: worker

2.2 Create a multi-node cluster

# kind create cluster --config ./ k8s-multi-nodes-cluster.yaml --name k8s-multi-nodes-cluster

2.3 Set up and get multi-node cluster information

# export KUBECONFIG="$(kind get kubeconfig-path --name="k8s-multi-nodes-cluster")"

# kubectl cluster-info

2.4 View multi-node cluster information

# kubectl get nodes

3 Create HA high availability k8s cluster (multiple masters, multiple workers)

3.1 Writing a High Availability Cluster Profile

# touch /opt/kind/config/k8s-ha-cluster.yaml

The document reads as follows:

#Four nodes, two control-plane nodes, two workers nodes

kind: Cluster

apiVersion: kind.sigs.k8s.io/v1alpha3

kubeadmConfigPatches:- |

apiVersion: kubeadm.k8s.io/v1beta2

kind: ClusterConfiguration

metadata:

name: config

networking: serviceSubnet: 10.8.0.0/16

imageRepository: registry.aliyuncs.com/google_containers

nodeRegistration:

kubeletExtraArgs:

pod-infra-container-image: registry.aliyuncs.com/google_containers/pause:3.1

- |

apiVersion: kubeadm.k8s.io/v1beta2

kind: InitConfiguration

metadata: name: config

networking:

serviceSubnet: 10.8.0.0/16

imageRepository: registry.aliyuncs.com/google_containers

nodes:

- role: control-plane

- role: control-plane

- role: worker

- role: worker

3.2 Creating a High Availability Cluster

# kind create cluster --config ./ k8s-ha-cluster.yaml --name k8s-ha-cluster

3.3 Set up and get high availability cluster information

# export KUBECONFIG="$(kind get kubeconfig-path --name="k8s-ha-cluster")"

# kubectl cluster-info

3.4 View high availability cluster information

# kubectl get nodes

4 Delete clusters

# kind delete cluster --name k8s-single-node-cluster

Also note that clearing environment variables:

# unset KUBECONFIG

The above is "how to use kind to build k8s cluster" all the content of this article, thank you for reading! I believe that everyone has a certain understanding, hope to share the content to help everyone, if you still want to learn more knowledge, welcome to pay attention to the industry information channel!

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