10.8. Global Server Load Balance (Global Traffic Managemnet)¶
10.8.1. Overview¶
10.8.1.1. Overview¶
10.8.1.2. Features¶
10.8.2. Available Functions¶
10.8.2.1. List of Functions¶
Name |
Description |
Failover function |
DR function that detects down of the Primary server and redirects accesses from end users to the Secondary server |
IP intelligence function |
Function to decide a server to access by using IP address of end user’s country. |
Weight function |
Function to decide a server to access by using a ratio set per each server. |
Portal function |
Function to check subscription, report and alert status. |
Note
Either one of Failover, IP Intelligence and Weight functions can be selected per FQDN setting.
10.8.3. Description of Functions¶
10.8.3.1. Failover function¶
Functions |
Description |
Failover | Function to switch access destination to the Secondary server when the Primary server is judged to be down from health check result. |
Health check |
Function to run health check to specified contents common to each server. |
Note
If the Primary server is judged to have recovered, the access destination will be switched back to the Primary server.
Items |
Description |
Domain name |
Specifies the domain name of FQDN that end users access. |
FQDN name |
Specifies the name of FQDN that end users access. |
Name of the country where the Primary server is installed |
Specifies a name of the country that sets the Primary server. |
Name of the country that sets the Secondary server |
Specifies a name of the country that sets the Secondary server. |
IP address (or FQDN) of the Primary server |
Specifies IP address or FQDN of the Primary server. |
IP address (or FQDN) of the Secondary server |
Specifies IP address or FQDN of the Secondary server. |
Note
A server in a region closer to the country selected by the name of the country that sets servers will run health check.
If both IP address and FQDN are specified for a server, only FQDN will be used.
The number of server FQDNs that can be set is 1.
Name |
Description |
protocol |
Specifies protocols to use when health check is conducted.
HTTP(80) or HTTPS(443) is available.
|
Health check file name |
Specifies a contents URI of the health check target. |
Alert notify mail address |
Specifies the mail address to notify to when health check fails. |
Note
Access to the health check file from multiple Akamai Agents occurs every minute. Please note that if the access is denied by FW rules, it will be decided as the origin server down and communication to the corresponding server will not occur.
Decision of origin server down will mainly occur when acquisition of health check file name fails (Response code 4XX or 5XX is returned, or connection timeout occurs) or when Response Time is not less than 4 seconds.
10.8.3.2. IP intelligence function¶
Functions |
Description |
IP intelligence | Function to decide a server to access by using IP address of end user’s country. |
MAP | A function that defines GSLB Zone information and applies it per FQDN that end users access. |
Note
IP intelligence does not have health check function.
Items |
Description |
Domain name |
Specifies the domain name of FQDN that end users access. |
FQDN name |
Specifies the name of FQDN that end users access. |
Map name |
Specifies the name of a Map corresponding to FQDN that end users access. |
GSLB Zone Origin FQDN | Specifies FQDN of sorting destination server if there is access from end users in a region defined by GSLB Zone. |
GSLB Other Zone Origin FQDN | Specifies FQDN of sorting destination server if there is access from end users in a region other than those defined by GSLB Zone. |
Note
For Origin FQDN, only FQDN can be specified. You cannot specify the IP address.
The maximum number of servers you can specify per access FQDN setting is 3.
Name |
Description |
GSLB name |
Defines the name of GSLB Zone to use. |
Region |
Defines regions included in GSLB Zone. |
10.8.3.3. Weight function¶
Items |
Description |
Domain name |
Specifies the domain name of FQDN that end users access. |
FQDN name |
Specifies the name of FQDN that end users access. |
Name of the country that sets the server |
Specifies the name of the country that sets the server. |
IP address (or FQDN) of the server |
Specifies IP address or FQDN of the server |
Connection ratio |
Specifies ratio of sorting traffics to each server. |
Note
A server in a region closer to the country selected by the name of the country that sets servers will run health check.
The maximum number of servers you can specify per access FQDN setting is 3.
If both IP address and FQDN are specified for a server, only FQDN will be used.
The number of server FQDNs that can be specified is 1.
Name |
Description |
protocol |
Specifies protocols to use when health check is conducted.
HTTP(80) or HTTPS(443) is available.
|
Health check file name |
Specifies a contents URI of the health check target. |
Alert notify mail address |
Specifies the mail address to notify to when health check fails. |
Note
Access to the health check file from multiple Akamai Agents occurs every minute. Please note that if the access is denied by FW rules, it will be decided as the origin server down and communication to the corresponding server will not occur.
Decision of origin server down will mainly occur when acquisition of health check file name fails (Response code 4XX or 5XX is returned, or connection timeout occurs) or when Response Time is not less than 4 seconds.
10.8.3.4. Portal function¶
Name |
Purpose |
Control panel |
You can place subscription order of menus and check the order status. |
Akamai portal |
You can check reports and alerts about this menu in use. |
Control panel¶
Items |
Description |
Main screen |
You can check details of subscription in use or on order. |
Setting sheet form download |
You can download a subscription order file of this menu from here. |
New/Additional order |
You can place order for new/additional subscription plan. |
Order correction/Change of setting sheet |
•You can use this to remand/correct the details of subscription when you place order of new/additional subscription plan.
•Setting change of existing FQDN and additional order for FQDN setting are possible within the plans in use.
|
Terminations |
You can request to terminate the plans in use. |
Akamai portal¶
Items |
Functions |
Email Address |
An account (mail address) used for login can be changed. |
Timezone |
The timezone on Akamai Portal can be specified. |
Language |
The language displayed on Akamai Portal can be specified. |
New Password |
The password of an account used for login can be changed. |
Items |
Functions |
Traffic Status | The number of DNS requests can be checked. |
Errors | You can check the contents of the health check judged as errors from the health check result. |
Note
Akamai Portal does not support single sign-on from an ECL2.0 portal.
Report of the number of DNS requests per FQDN can be downloaded in CSV format.
Items |
Functions |
Active alert |
Customers can check alert occurrence status and Alert setting. |
Note
If it is decided as sever down from the result of health check, an alert mail will be sent to the registered address.
10.8.4. Menu¶
10.8.4.1. Menu / Plan¶
Plan |
Number of available FQDNs |
2 FQDN | 2 |
5 FQDN | 5 |
Note
If you need setting for 4 FQDNs, choose either (2 FQDN Plan × 2) or (5 FQDN Plan × 1).
If you plan to use 5 FQDNs or more, please talk with our sales representative.
10.8.4.2. Subscription Methods¶
Order Types |
Details |
Subscription Methods |
Offering Date |
New Plan |
Addition of a usage plan. |
It can be done by placing order with a Subscription Order sheet from “New/Additional Subscription” on the Control Panel. |
Fourteen business days |
Delete Plan |
Terminate Plan |
It can be done by requesting with a Request sheet from “Deletion Request” on the Control Panel. |
Five business days |
FQDN New |
Addition of new FQDN setting (in case of FQDN addition due to rooms of the number of FQDNs in the plan in use) |
It can be done by requesting with a Request sheet from “Subscription correction/Setting sheet change” on the Control Panel. |
Five business days |
FQDN Change |
Change of FQDN setting already set (including new/change/deletion request of Akamai Portal account) |
It can be done by requesting with a Request sheet from “Subscription correction/Setting sheet change” on the Control Panel. |
Five business days |
FQDN Deletion |
Deletion of FQDN setting already set |
It can be done by requesting with a Request sheet from “Subscription correction/Setting sheet change” on the Control Panel. |
Five business days |
Note
Offering Date shall conform to business days (Saturday, Sunday and holidays are excluded) of Japan Region of Service Provider.
Counting of business days will start after the receipt of subscription order and after Service Provider has confirmed that errors or omissions do not exist in the order form.
10.8.4.3. Restrictions In Subscriptions¶
Unit |
Maximum Number |
Minimum Number |
Subscription Plan |
No limit |
One (1) Plan |
Note
If you use 5 FQDNs or more, Global Traffic Management, which is our CDN service, is recommended. Please talk with our sales representative.
Though there is no upper limit to the number of plans, the upper limit to the number of FQDNs that can be set by subscription order at a time is 10 (subscription of 5 FQDN Plan × 2).