记录一次单节点部署k8s

省略k8s与docker的安装过程
主要碰到问题如下:
使用k8拉去本地镜像的时候发现拉不下来报错

![image.png](https://img.haomeiwen.com/i13612885/1370e4a3314043ae.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)

于是改变策略，先与本地建立一个私人仓库

docker pull registry
mkdir -p /opt/data/registry  //创建目录
sudo docker run -d -p 5000:5000 -v /opt/data/registry:/var/lib/registry  --name private_registry registry  //启动容器

sudo service docker restart   //重启容器
sudo docker start private_registry   //重启registry服务
sudo docker tag mytest:latest 192.168.147.129:5000/mytest(mytest为我打包的一个http服务)
sudo docker push 192.168.147.129:5000/mytest(此处可能报错需要设置/etc/docker/daemon.json)
设置如下：
{
        "registry-mirrors": ["https://njrds9qc.mirror.aliyuncs.com"],
        "insecure-registries":["XX.XX.XX.XX:5000"]
}
设置完重新push即可

k8s部署yaml文件:

apiVersion: v1
kind: ReplicationController
metadata:
  name: mytest
spec:
  replicas: 1
  selector:
    app: mytest
  template:
    metadata:
      labels:
        app: mytest
    spec:
      containers:
        - name: mytest
          image: xx,xx,xx,xx:5000/mytest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 8550

然后创建此pod
kubectl create -f demo-rc.yaml

但这样外包还是无法访问该pod，需要在创建一个serivies
yaml文件如下:

apiVersion: v1
kind: Service
metadata:
  name: mytest
spec:
  type: NodePort
  ports:
  - port: 8550
    targetPort: 8550
    nodePort: 30001
  selector:
    app: mytest

kubectl create -f demo-svc.yaml