利用阿里云CLI创建Serverless Kubernetes集群

阿里云CLI 是基于阿里云开放 API 建立的管理工具。借助此工具，您可以通过调用阿里云开放 API 来管理阿里云产品。

前提条件

Cloud Shell 默认安装配置了阿里云CLI和账号信息，无需任何额外配置。如果您不使用Cloud Shell，需要满足以下前提条件：

$ aliyun configure
Configuring profile 'default' in 'AK' authenticate mode...
Access Key Id []: ************
Access Key Secret []: ************
Default Region Id []: cn-hangzhou
Default Output Format [json]: json (Only support json)
Default Language [zh|en] en:
Saving profile[default] ...Done.

Configure Done!!!
..............888888888888888888888 ........=8888888888888888888D=..............
...........88888888888888888888888 ..........D8888888888888888888888I...........
.........,8888888888888ZI: ...........................=Z88D8888888888D..........
.........+88888888 ..........................................88888888D..........
.........+88888888 .......Welcome to use Alibaba Cloud.......O8888888D..........
.........+88888888 ............. ************* ..............O8888888D..........
.........+88888888 .... Command Line Interface(Reloaded) ....O8888888D..........
.........+88888888...........................................88888888D..........
..........D888888888888DO+. ..........................?ND888888888888D..........
...........O8888888888888888888888...........D8888888888888888888888=...........
............ .:D8888888888888888888.........78888888888888888888O ..............

说明 更多内容请参见 https://help.aliyun.com/document_detail/110341.html。

操作步骤

1、创建一个工作目录，并且在下面创建文件create.json。

该文件描述了如下的K8s Serverless集群配置。详细信息请参考[创建集群实例] (https://help.aliyun.com/document_detail/93084.html)。

  • 在 “cn-beijing” 地域创建一个新的VPC，以及在“cn-beijing-h”AZ创建相关Vswitch,
  • 创建一个Serverless K8s集群，并为其开启 NAT Gateway 和 PrivateZone等产品
{
    "cluster_type": "Ask",
    "name": "test-serverless-k8s",
    "region_id": "cn-beijing",
    "zoneid": "cn-beijing-h",
    "nat_gateway": true,
    "private_zone": true,
    "tags": [
        {"key": "env", "value": "test"}
    ]
}

2、创建Serverless K8s集群。

$ aliyun cs  POST /clusters --header "Content-Type=application/json" --body "$(cat create.json)"
{
	"cluster_id": "************************",
	"instanceId": "************************",
	"request_id": "**********-****-****-****-************",
	"task_id": "*-************"
}

3、查看集群实例。

$ aliyun cs GET /clusters/<YOUR-CLUSTER-ID>
  {
  	"-": "PayByTraffic",
  	"cluster_healthy": "",
  	"cluster_id": "************************",
  	"cluster_spec": "",
  	"cluster_type": "Ask",
  	"created": "2020-07-23T10:02:18+08:00",
  	"current_version": "v1.16.6-aliyun.1",
  	"data_disk_category": "cloud",
  	"data_disk_size": 0,
  	"deletion_protection": false,
  	"docker_version": "",
  	"enabled_migration": false,
  	"external_loadbalancer_id": "lb-*********",
  	"gw_bridge": "",
  	"init_version": "v1.16.6-aliyun.1",
  	"instance_type": "",
  	"name": "test-serverless-k8s",
  	"need_update_agent": false,
  	"network_mode": "vpc",
  	"node_status": "",
  	"private_zone": false,
  	"profile": "ask.v2",
  	"region_id": "cn-beijing",
  	"resource_group_id": "rg-*********",
  	"security_group_id": "sg-*********",
  	"size": 0,
  	"state": "running",
  	"subnet_cidr": "172.16.0.0/16",
  	"swarm_mode": false,
  	"tags": [
  		{
  			"key": "env",
  			"value": "test"
  		}
  	],
  	"updated": "2020-07-23T10:05:11+08:00",
  	"vpc_id": "vpc-*********",
  	"vswitch_cidr": "",
  	"vswitch_id": "vsw-*********",
  	"worker_ram_role_name": ""
  }

4、获取当前的集群配置。 说明 安装和设置 kubectl 客户端，详情请参见 https://kubernetes.io/docs/tasks/tools/install-kubectl/。

KUBECONFIG=<YOUR-LOCAL-KUBECONFIG-PATH>
$ aliyun cs GET /k8s/$cluster/user_config | jq -r '.config' > $KUBECONFIG


$ kubectl get ns
NAME              STATUS   AGE
default           Active   7m43s
kube-node-lease   Active   7m45s
kube-public       Active   7m45s
kube-system       Active   7m45s

5、测试集群，创建和删除应用。

$ kubectl run nginx --image=registry-vpc.cn-shenzhen.aliyuncs.com/acs-sample/nginx:latest

deployment.apps/nginx created

$ kubectl get deploy
  NAME    READY   UP-TO-DATE   AVAILABLE   AGE
  nginx   1/1     1            1           58s

$ kubectl delete deploy nginx

deployment.extensions "nginx" deleted

6、删除资源，包含K8s集群和相关的VPC等资源。

$ aliyun cs DELETE /clusters/************

参考文档