Kind(Kubernetes in Docker)

官网：kind (k8s.io)

Kubernetes in Docker

一、部署Kind

1.1 提前在本机器安装好docker

1.2 下载安装Kind

curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.24.0/kind-linux-amd64
chmod +x ./kind
mv ./kind /usr/local/bin/kind

1.3 安装kubectl

curl -LO https://dl.k8s.io/release/v1.31.0/bin/linux/amd64/kubectl
install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

二、集群

2.1 单控制面集群

#创建集群，没有指定集群名字，默认名字为kind
kind create cluster

#删除集群，没有指定集群名字，默认名字为kind
kind delete cluster

#指定集群名字创建集群，也可以使用-n
kind create cluster --name cluster-name

2.2 多节点集群

创建一控制节点两工作节点集群

[root@Kind my-yamls]# cat myc.yaml 
kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
name: myc
nodes:
- role: control-plane
- role: worker
- role: worker


[root@Kind my-yamls]# kind create cluster --config myc.yaml
Creating cluster "myc" ...
 ✓ Ensuring node image (kindest/node:v1.31.0) 🖼
 ✓ Preparing nodes 📦 📦 📦  
 ✓ Writing configuration 📜 
 ✓ Starting control-plane 🕹️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️️ 
 ✓ Installing CNI 🔌 
 ✓ Installing StorageClass 💾 
 ✓ Joining worker nodes 🚜 
Set kubectl context to "kind-myc"
You can now use your cluster with:

kubectl cluster-info --context kind-myc

Have a question, bug, or feature request? Let us know! https://kind.sigs.k8s.io/#community 🙂

查看集群

[root@Kind my-yamls]# kind get clusters
myc

[root@Kind my-yamls]# kind get nodes -A
myc-worker
myc-worker2
myc-control-plane

[root@Kind my-yamls]# kubectl get nodes
NAME                STATUS   ROLES           AGE   VERSION
myc-control-plane   Ready    control-plane   14h   v1.31.0
myc-worker          Ready    <none>          14h   v1.31.0
myc-worker2         Ready    <none>          14h   v1.31.0

[root@Kind my-yamls]# kubectl get pods -A
NAMESPACE            NAME                                        READY   STATUS    RESTARTS   AGE
kube-system          coredns-6f6b679f8f-nx76j                    1/1     Running   0          2m26s
kube-system          coredns-6f6b679f8f-ptk57                    1/1     Running   0          2m26s
kube-system          etcd-myc-control-plane                      1/1     Running   0          2m30s
kube-system          kindnet-4v5f5                               1/1     Running   0          2m16s
kube-system          kindnet-cdwv5                               1/1     Running   0          2m26s
kube-system          kindnet-gl6c9                               1/1     Running   0          2m16s
kube-system          kube-apiserver-myc-control-plane            1/1     Running   0          2m30s
kube-system          kube-controller-manager-myc-control-plane   1/1     Running   0          2m30s
kube-system          kube-proxy-4wxbh                            1/1     Running   0          2m26s
kube-system          kube-proxy-8g96k                            1/1     Running   0          2m16s
kube-system          kube-proxy-hv9dr                            1/1     Running   0          2m16s
kube-system          kube-scheduler-myc-control-plane            1/1     Running   0          2m30s
local-path-storage   local-path-provisioner-57c5987fd4-7r5ms     1/1     Running   0          2m26s

三、镜像

3.1 导入docker镜像到所有节点

kind load docker-image my-custom-image-0 my-custom-image-1 ...

3.2 导入归档的docker镜像到所有节点

kind load image-archive /my-image-archive.tar

3.3 查看节点内的镜像

docker exec -it my-node-name crictl images