Alibaba Cloud CDN Operation Guide

35 Pages·2016·1.44 MB·English

Alibaba Cloud CDN
Operation Guide
Alibaba Cloud CDN/Operation Guide

Operation Guide

Product Restrictions

Restrictions on the Use of CDN

-Real-name authentication must be performed for accounts on the Alibaba Cloud official
website
-A CDN domain must be on file with the Ministry of Industry and Information Technology
(MIIT) and be connected to Alibaba Cloud
-The origin site content of a CDN domain needs to be stored on Elastic Compute Service
(ECS) or Object Storage Service (OSS). If the origin site content is not stored on Alibaba
Cloud, access must be reviewed

All domains attempting to access CDN must be reviewed. In any of the following cases, CDN
access is not allowed

i.The CDN domain cannot be normally accessed or the content does not include
any substantive information
ii.The CDN domain is for a game private server
iii.The CDN domain is used for a legend-type game or card game
iv.The CDN domain is for a P2P website
v.The CDN domain is for a lottery website
vi.The CDN domain is for an illegal hospital or pharmaceutical website
vii.The CDN domain is for a site involving porn, gambling, drugs, etc.
viii.Automatic timeout rejection: Your domain name is rejected because it fails to
comply with CDN access rules. Please check the feedback and submit a
qualified domain name for reviewing again.

Domains that have accessed Alibaba Cloud CDN will be reviewed regularly. If any of the
above violations is found, CDN acceleration for the relevant domain is immediately
suspended and CDN services for all domains of the relevant user are also suspended

-When a CDN domain is in the "Deactivated" status (including the "Not Approved" status) for
more than 30 days, the system will automatically delete the records related to this domain
name. If you must continue CDN acceleration for this domain name, please add it again

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Does Accelerated Content Delivery Take Effect after a
CDN Domain is Approved

The answer is NO. To make accelerated content delivery effective, you need to direct your domain to
a Canonical Name (CNAME) domain generated by CDN and add a CNAME record at the Domain
Name System (DNS) service provider.

Restriction on the Number of CDN Domains

The maximum number of CDN domains for each Alibaba Cloud account is 20. If you need more CDN
domains, please submit a ticket to apply for special support

Restriction on the Number of IP Origin Sites

Currently, the maximum number of IP origin sites for each CDN domain is20 (meaning 20 IP
addresses)If you need more IP origin sites in special scenarios, please submit a ticket to apply for
special support

Restriction on the Number of Cache Refresh and Push
Operations

The following details the restriction on the number of cache refresh operations (including cache
refresh and cache push)

-URL refresh:2000 items/day/account
-Directory refresh:100 items/day/account

Quick Start

Alibaba Cloud CDN is a distributed network that is built and overlaid on the bearer network and is
composed of edge node server clusters distributed across different regions. It replaces the traditional
data transmission modes centered on Web servers. The CDN Console can help you add a CDN
domain, refresh the cache, and perform other configuration tasks. It also provides resource
monitoring services including real-time data analysis. This document mainly describes the basic
information about the CDN Console.

Overview of CDN Operation
After you log onto the CDN Console , the CDN operation information under the current account is
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displayed on the home page, which mainly includes

1.Announcements
2.Shows total number of added domains
3.Shows the number of domains with normal statuses
4.Shows the total traffic for all domains this month
5.Shows the domains that used the most traffic this month

Link to the recharge account balance page

Note:This month indicates the current natural month.*

You can use the left-side navigation bar to set the relevant functions and look at the data

Function Description
You can add a new CDN domain, manage or
delete an existing CDN domain, or change the
Adding a CDN domain
basic information and configuration
information of a CDN domain
The URL refresh and directory refresh modes
Cache refresh
are provided
Resource monitoring covers traffic
Resource monitoring monitoring, user access monitoring, data
analysis, and security monitoring
Others Log management and diagnostic tools

Adding a CDN Domain

Log onto the CDN Console , select "CDN Domain List", and click "Add Domain Name".(If the source
content is in OSS, please select OSS Bucket acceleration)

1. Selecting "CDN Domain List"

In the top-right corner, click "Add Domain Name"

Note:A single user can add up to 20 domain names. If you are no longer using an old domain name,
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we suggest you delete the record.

2. Entering Basic Information

Enter the CDN domain, select the appropriate origin site, and confirm the business type

Considerations:

1.CDN domain

The filing for the domain you entered must be complete. If filing is still in progress, the entered
domain cannot be accessed.Domain content must comply with CDN specifications. For details, refer
to CDN Service Usage Restrictions

2.Select a proper service type: acceleration of images and small files, acceleration of large file
downloads, acceleration of on-demand video/audio, and acceleration of live streaming media

Service Type Description
Acceleration of images and small files is
Acceleration of images and small files recommended if the content to be
accelerated is mostly images and Web files
Acceleration of large file downloads is
recommended if the content to be
Acceleration of large file downloads
accelerated is large files (static files larger
than 20 MB)
In case of large video files, acceleration of live
streaming media is recommended to
Acceleration of on-demand video/audio
accelerate the video on demand and live
video services
The acceleration of live streaming media is
provided. Currently, RTMP-based live
streaming acceleration and HLS-based live
Acceleration of live streaming media (being streaming acceleration are supported. Live
tested) streaming services do not support user-
defined origin sites. Currently, the central live
streaming server is provided:video-
center.alivecdn.com
Considerations:
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-Ensure that "check url" can be accessed normally before adding a domain.
-If you click "Next", the CDN domain to be added will be verified. The rules are as follows
l A CDN domain must be filed by the Ministry of Industry and Information
Technology (MIIT)
l Duplicate CDN domains are not supported. If your CDN domain is occupied, please
submit a ticket for processing
l Up to 20 CDN domains can be added under the same account

3.Origin site type: IP address, origin site domain, OSS domain, or central live streaming server (for the
live streaming media service only)

Origin Site Type Description
Internet IP addresses of multiple servers can
be entered.
If the IP address you entered does not belong
IP address
to an Alibaba Cloud product, the domain to
be added needs to be reviewed, which will
take 1 or 2 working days
Enter an origin site domain
Note: The origin site domain you entered
cannot be the same as the CDN domain to be
Origin site domain added. For example, if the CDN domain to be
added is "test.yourdomain.com", you are
recommended to set your origin site to
"src.yourcompany.com"
Enter an OSS bucket access address, for
OSS domain
example, xxx.aliyuncs.com
This origin site type is available for live
streaming media acceleration only. By default,
Central live streaming server (being tested) it is set to: "video-center.alivecdn.com". User-
defined central live streaming servers are not
supported
Note:If the origin site is a domain, the origin site domain cannot be the same as the CDN domain to
be added. If related resource requested by a user has not been cached on the CDN node, the CDN
node will get it from the origin site and return it to the user. If the CDN domain and the origin site
domain are the same, request parsing will be repeated on the CDN node, and the CDN node cannot
go back to the origin site to get the content. So it is suggested that if your CDN domain is
"example.aliyun.com", you can use "src.example.aliyun.com" as the origin site for differentiation.

3. Entering Configuration Information

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Domain name configurations are optional. Configurations can be performed after a CDN domain is
created successfully. For details, refer to Configuration Information

4. Confirming Information

After confirming the basic information and domain name configurations, click Complete. The new
domain name will appear in the list. You can click "Manage" or the domain name to modify the
configurations

-Note:When the domain name status is "Running", the configuration will take effect*

Deleting Domain Name Configurations

To delete a domain name, you must "Stop" it if it is in the "Running" status. After the status changes
to "Stopped", the delete button will light up and you can delete the domain name

CNAME Binding

Obtain the correct CNAME domainThe CNAME domain is displayed in the CDN domain list,
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as shown in the following figure:

Query the domain statusDomain name configurations must be distributed to all nodes of
the network, which may take 15 minutes.

Correctly configure DNS resolutionPlease go to your DNS service provider to complete the
CNAME configuration.

Verify that the CNAME domain is added successfullyPing the CDN domain you added. If
you are directed to the "*.*kunlun.com" domain, it indicates that the CDN is serving your
website.

Configuration

Function Configuration Overview

Item Description Default
Compresses and removes
useless blank lines and
Page optimization carriage return characters Disabled
from a page to effectively
reduce the page size
Smart compression Supports smart compression Disabled
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for content in multiple
formats to effectively reduce
the size of content
transmitted by users
If this item is selected,
parameters after "?" in a URL
Filter parameter Disabled
request will be removed in
the back-to-source process
Specifies the domain name
of a host that a CDN node
accesses in the back-to-
Source host source process. Three CDN domain
options are available: CDN
domain, origin site domain,
and user-defined domain
Three options are available:
default 404 page, public
Customizing the 404 page Default 404 page
welfare 404 page and user-
defined 404 page
The range source function
allows a client to notify an
origin site server to return
partial content within a
Range source Disabled
specified range. This function
is of great help for the
accelerated delivery of large
files
Enables random drag/drop
Drag/drop playback playback in a video/audio on Disabled
demand scenario
You can configure a referer
Anti-leech black list or white list to Disabled
identify and filter visitors
Uses URL authentication
Authentication configuration methods to protect Disabled
resources on an origin site
You can customize cache
Cache policy configuration expiration rules for specified Disabled
resources
You can set an HTTP request
header. Eight HTTP request
Setting HTTP Request
header parameters are Disabled
Header
currently available for your
customization
Includes WAF protection and
Security protection Enabled
CC protection
httpDNS is a DNS service. It
uses the HTTP protocol to
SettinghttpDNS Disabled
directly access the server of
AliCloud CDN
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Back-to-Source Host

Function Introduction

You can customize the domain name of a Web server that a CDN node accesses in the back-to-
source process

Considerations

-Because an origin site is a CDN domain in the OSS space, the "Back-to-Source Host" must be
set to the CDN domain so as to get back to the source for data.

Configuration Guide

-The "Back-to-Source Host" configuration is optional and its default value is: CDN domain

The value options include: CDN domain, origin site domain, and user-defined domain

Changing configuration Enter the CDN Domain Overview page-->Select a domain to enter
the management page-->Basic information:Enter basic configuration to set "Back-to-Source
Host"

Back-to-source with Same Protocol
Function Introduction
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