首先准备机器
我这边有个Ubuntu16.04 1core，2G的阿里云机器，用这个来学习
配置终端zsh
参考一键安装zsh和自动补全高亮：https://github.com/onesafe/easy_install_zsh
安装go
# 从官网https://golang.org/dl/ 下载
wget https://dl.google.com/go/go1.13.1.linux-amd64.tar.gz
# 解压到指定目录/usr/local
tar zxvf go1.13.1.linux-amd64.tar.gz -C /usr/local
# 配置环境变量
cat ~/.bash_profile
export PATH=$PATH:/usr/local/go/bin:$(go env GOPATH)/bin
export GOPROXY=https://goproxy.cn
export KUBECONFIG="$(kind get kubeconfig-path --name="kind")"
安装docker
apt-get update
apt-get -y install apt-transport-https ca-certificates curl software-properties-common
curl -fsSL http://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
add-apt-repository "deb [arch=amd64] http://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable"
apt-get -y update
apt-get -y install docker-ce
安装kind
# 执行下面的命令，k8s就创建好了
GO111MODULE="on" go get sigs.k8s.io/kind@v0.5.1 && kind create cluster
# 配置环境变量
cat ~/.bash_profile
export KUBECONFIG="$(kind get kubeconfig-path --name="kind")"
# 下载kubelet，这里和kind的image版本对应一下，kind用的kindest/node:v1.15.3
curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl
mv kubectl /usr/local/bin/k
查看k8s环境是否已经装好
创建deployment和service，看看k8s是否真的ready
创建一个文件k8s-test-nginx.yml，内容如下
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: nginx-deployment
spec:
replicas: 2
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.7.9
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: my-nginx
labels:
app: nginx
spec:
ports:
- name: my-nginx-port
port: 80
protocol: TCP
targetPort: 80
selector:
app: nginx
type: NodePort
执行命令创建
k create -f k8s-test-nginx.yml
查看部署结果
访问nginx服务
# 查看k8s的node（用docker模拟的）的IP
➜ /mnt docker inspect kind-control-plane --format '{{.NetworkSettings.Networks.bridge.IPAddress}}'
172.17.0.3
可以看到我们的服务成功部署了
试用curl访问k8s的api
# 启动一个反向代理
k proxy --port=8080 &
# 访问k8s的watch API
curl -i http://localhost:8080/api/v1/watch/pods\?watch\=yes
HTTP/1.1 200 OK
Content-Type: application/json
Date: Wed, 16 Oct 2019 10:18:44 GMT
Transfer-Encoding: chunked
{"type":"ADDED", "object":{"kind":"Pod","apiVersion":"v1",...}}
{"type":"ADDED", "object":{"kind":"Pod","apiVersion":"v1",...}}
{"type":"MODIFIED", "object":{"kind":"Pod","apiVersion":"v1",...}}
