每天一点 Kubernetes(k8s)--1
环境搭建
如果使用正式的 k8s,那我们可能需要花很多钱买服务器才可以,所以我们选择一个简单易用的,轻量的,可以在本地环境全量试验 k8s 的环境。
网上有很多种,我选择 kind,它满足我以上说的所有要求,使用 docker 运行,其他的 minikube 较重使用虚拟机构建,k3s 合并了很多功能,不能方便的体现 k8s 的各种概念。
下载 kind
官方推荐 4 种方式
1.在macOS / Linux上:
curl -Lo ./kind https://github.com/kubernetes-sigs/kind/releases/download/v0.6.0/kind-$(uname)-amd64
chmod +x ./kind
mv ./kind /some-dir-in-your-PATH/kind
2.在Mac上通过Homebrew:
brew install kind
3.在Windows上:
curl.exe -Lo kind-windows-amd64.exe https://github.com/kubernetes-sigs/kind/releases/download/v0.6.0/kind-windows-amd64
Move-Item .\kind-windows-amd64.exe c:\some-dir-in-your-PATH\kind.exe
4.Chocolatey (https://chocolatey.org/packag...
choco install kind
5.使用网页或者下载程序下载
我推荐第 5 种,因为墙的原因,很多时候我们用命令会下载不成功,或者下载回来的,不是正确的程序,我下载回来后一直执行错误,cat kind
一看,原来文件是空的。最后通过浏览器下载回来,移动到 /usr/local/bin
目录,安装成功。
➜ kind kind
kind creates and manages local Kubernetes clusters using Docker container 'nodes'
Usage:
kind [command]
Available Commands:
build Build one of [base-image, node-image]
completion Output shell completion code for the specified shell (bash or zsh)
create Creates one of [cluster]
delete Deletes one of [cluster]
export exports one of [kubeconfig, logs]
get Gets one of [clusters, nodes, kubeconfig]
help Help about any command
load Loads images into nodes
version prints the kind CLI version
Flags:
-h, --help help for kind
--loglevel string DEPRECATED: see -v instead
-q, --quiet silence all stderr output
-v, --verbosity int32 info log verbosity
--version version for kind
Use "kind [command] --help" for more information about a command.
创建集群
➜ kind kind create cluster --name kind-1
Creating cluster "kind" ...
✓ Ensuring node image (kindest/node:v1.16.3) ?
✓ Preparing nodes ?
✓ Writing configuration ?
✓ Starting control-plane ?️
✓ Installing CNI ?
✓ Installing StorageClass ?
Set kubectl context to "kind-kind-1"
You can now use your cluster with:
kubectl cluster-info --context kind-kind-1
Have a nice day! ?
如果不指定 --name kind-1
默认名称为 kind
。
获取集群
➜ kind kind get clusters
kind-1
获取所有集群
指定当前集群
➜ kind kubectl cluster-info --context kind-kind-1
Kubernetes master is running at https://127.0.0.1:61230
KubeDNS is running at https://127.0.0.1:61230/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
➜ kind kind delete cluster
删除集群
kind delete cluster --name kind-kind-2
Deleting cluster "kind-kind-2" ...
如果不指定,默认删除 kind-kind
。
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