摘要：現(xiàn)在很高興的向大家宣布彈性網(wǎng)卡從今天開始支持熱插撥，即服務器只要處在穩(wěn)定狀態(tài)，就可以對彈性網(wǎng)卡進行插拔操作。彈性網(wǎng)卡熱插拔分別可以根據(jù)彈性網(wǎng)卡，實例，進行彈性網(wǎng)卡的熱插拔。相關參考幫助文檔掛載彈性網(wǎng)卡，卸載彈性網(wǎng)卡。

摘要： 本文主要介紹了彈性網(wǎng)卡的熱插撥功能改進，彈性網(wǎng)卡插拔對應的實例不再要求必須為 Stopped 狀態(tài)，現(xiàn)在只要求是穩(wěn)定狀態(tài)( Running Stopped )即可。以及介紹了控制臺、OpenAPI如何對彈性網(wǎng)卡進行熱插拔操作。

背景

在云計算飛速發(fā)展的今天，用戶ECS服務器身處的網(wǎng)絡環(huán)境越來越復雜，彈性網(wǎng)卡讓ECS服務器完美游走在日益復雜的網(wǎng)絡環(huán)境中。但是以前服務器必須是Stopped狀態(tài)才可以進行彈性網(wǎng)卡(ENI)的插拔，這樣可能會影響運行在服務器上的業(yè)務?，F(xiàn)在很高興的向大家宣布：彈性網(wǎng)卡從今天開始支持熱插撥，即ECS服務器只要處在穩(wěn)定狀態(tài)(Running Stopped)，就可以對彈性網(wǎng)卡進行插拔操作。

彈性網(wǎng)卡熱插拔：控制臺

控制臺操作彈性網(wǎng)卡的位置：進入控制臺 -> 云服務器 ECS -> 彈性網(wǎng)卡。
創(chuàng)建彈性網(wǎng)卡：點擊創(chuàng)建彈性網(wǎng)卡按鈕，在彈窗中填寫網(wǎng)卡名稱，選擇專有網(wǎng)絡 交換機 安全組等信息后創(chuàng)建彈性網(wǎng)卡。

熱掛載彈性網(wǎng)卡：點擊彈性網(wǎng)卡對應的綁定實例按鈕，在彈窗中選擇要綁定實例。實例狀態(tài)只要求為穩(wěn)定狀態(tài)(Running Stopped)。

熱卸載彈性網(wǎng)卡：點擊彈性網(wǎng)卡對應的解綁實例按鈕，確定即可解綁。實例狀態(tài)只要求為穩(wěn)定狀態(tài)(Running Stopped)。

彈性網(wǎng)卡熱插拔：OpenAPI
attach_eni detach_eni 分別可以根據(jù)彈性網(wǎng)卡ID，實例ID，進行彈性網(wǎng)卡的熱插拔。相關API參考幫助文檔：掛載彈性網(wǎng)卡，卸載彈性網(wǎng)卡。

#  coding=utf-8

# if the python sdk is not install using "sudo pip install aliyun-python-sdk-ecs"
# if the python sdk is install using "sudo pip install --upgrade aliyun-python-sdk-ecs"
# make sure the sdk version is 4.7.1, you can use command "pip show aliyun-python-sdk-ecs" to check

import json
import logging

from aliyunsdkcore import client
from aliyunsdkecs.request.v20140526.CreateNetworkInterfaceRequest import CreateNetworkInterfaceRequest
from aliyunsdkecs.request.v20140526.AttachNetworkInterfaceRequest import AttachNetworkInterfaceRequest
from aliyunsdkecs.request.v20140526.DetachNetworkInterfaceRequest import DetachNetworkInterfaceRequest
from aliyunsdkecs.request.v20140526.DeleteNetworkInterfaceRequest import DeleteNetworkInterfaceRequest

# configuration the log output formatter, if you want to save the output to file,
# append ",filename="ecs_invoke.log"" after datefmt.

logging.basicConfig(level=logging.INFO,
                    format="%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s",
                    datefmt="%a, %d %b %Y %H:%M:%S")


# send open api request
def _send_request(request):
    request.set_accept_format("json")
    try:
        response_str = clt.do_action(request)
        logging.info(response_str)
        response_detail = json.loads(response_str)
        return response_detail
    except Exception as e:
        logging.error(e)


# create eni
def create_eni(vSwitchId, securityGroupId, networkInterfaceName=None, primaryIpAddress=None, description=None,
               clientToken=None):
    request = CreateNetworkInterfaceRequest()
    request.set_VSwitchId(vSwitchId)
    request.set_SecurityGroupId(securityGroupId)
    if (networkInterfaceName != None):
        request.set_NetworkInterfaceName(networkInterfaceName)
    if (primaryIpAddress != None):
        request.set_PrimaryIpAddress(primaryIpAddress)
    if (description != None):
        request.set_Description(description)
    if (clientToken != None):
        request.set_ClientToken(clientToken)
    _send_request(request)


# attach eni to instance
def attach_eni(eniId, instanceId):
    request = AttachNetworkInterfaceRequest()
    request.set_NetworkInterfaceId(eniId)
    request.set_InstanceId(instanceId)
    _send_request(request)


# detach eni from instance
def detach_eni(eniId, instanceId):
    request = DetachNetworkInterfaceRequest()
    request.set_NetworkInterfaceId(eniId)
    request.set_InstanceId(instanceId)
    _send_request(request)


# delete eni
def delete_eni(eniId):
    request = DeleteNetworkInterfaceRequest()
    request.set_NetworkInterfaceId(eniId)
    _send_request(request)


if __name__ == "__main__":
    clt = client.AcsClient("Your Access Key Id", "Your Access Key Secrect", "cn-zhangjiakou")
    vSwitchId = "vsw-test"
    securityGroupId = "sg-test"
    # create_eni(vSwitchId=vSwitchId, securityGroupId=securityGroupId)

    attach_eniId = "eni-test"
    attach_instanceId = "i-test"
    # attach_eni(attach_eniId, attach_instanceId)

    detach_eniId = "eni-test"
    detach_instanceId = "i-test"
    # detach_eni(detach_eniId, detach_instanceId)

    delete_eniId = "eni-test"
    # delete_eni(delete_eniId)

小結(jié)

現(xiàn)在的彈性網(wǎng)卡熱插拔只要求實例為穩(wěn)定狀態(tài)即可，改進了以前實例只能為Stopped狀態(tài)才能插拔彈性網(wǎng)卡的現(xiàn)狀。提升了用戶體驗，現(xiàn)在服務器不用關機就能輕松配置彈性網(wǎng)卡，更加靈活實用。

原文鏈接