CN104410677B - Server load balancing method and apparatus - Google Patents
Server load balancing method and apparatus Download PDFInfo
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- CN104410677B CN104410677B CN201410659288.3A CN201410659288A CN104410677B CN 104410677 B CN104410677 B CN 104410677B CN 201410659288 A CN201410659288 A CN 201410659288A CN 104410677 B CN104410677 B CN 104410677B
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- route entry
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1038—Load balancing arrangements to avoid a single path through a load balancer
Abstract
The invention discloses a kind of server load balancing method and apparatus.This method includes：Whether normal detect the communication of the first route entry；If detecting that the communication of the first route entry is normal, the first load-balanced server is sent information to by the first route entry；If detecting that the first route entry communicates obstacle, pass through secondary route entry forwarding information to the second load-balanced server.By the present invention, solve when a set of load-balanced server delays machine, the problem of corresponding web page server cisco unity malfunction.
Description
Technical field
The present invention relates to internet arena, in particular to a kind of server load balancing method and apparatus.
Background technology
When client accesses domain name A, it is necessary to first obtain the host server IP of domain name A bindings.First, client hair please
Ask to recursion server (i.e.：Local bandwidth operator servers), recursion server hair request is to resolution server, analysis service
All poll host server IP that device sets domain name return to recursion server, recursion server by these IP return again to
Client.The browser of client can conduct interviews to one of IP at random.In the prior art, in linux Virtual Services
(linux virtual server are referred to as device：Lvs) load balancing network address translation (Network Address
Translation, referred to as：Nat) under pattern, the request that lvs load-balanced servers A can only send client is transmitted to net
Page server 1 or the requests that client can only be sent of 2, lvs load-balanced server B be transmitted to web page server 3 or
4.A namely web page server can only correspond to a lvs server load balancing server, and a lvs load balancing takes
Business device can correspond to more web page servers.Therefore in this case, when have a set of load balancing delay machine when, only one
Half back-end host works, and second half can not then work.For example, when failure occurs in lvs load-balanced servers A, then all
The request that sends of client can be transmitted to web page server 3 or 4 by lvs load balancing B, and web page server 1 and 2 is then not
Can work.
For of the prior art when a set of load-balanced server delays machine, corresponding web page server can not be just
Often the problem of work, effective solution is not yet proposed at present.
The content of the invention
It is a primary object of the present invention to provide a kind of server load balancing method and apparatus, to solve to work as a set of load
Equalization server delay machine when, the problem of corresponding web page server cisco unity malfunction.
To achieve these goals, according to an aspect of the invention, there is provided a kind of server load balancing method.Root
Server load balancing method according to the present invention includes：The load that server load balancing method is used for multiple web page servers is equal
Weighing apparatus, is provided with multiple route entrys, load-balanced server includes between each web page server and load-balanced server
First load-balanced server and the second load-balanced server, multiple route entrys include the first route entry and secondary route
Entry, the first route entry send the path of information between each web page server and the first load-balanced server, and second
Route entry sends the path of information between each web page server and the second load-balanced server；The first via is detected by bar
Whether mesh communication is normal；If detecting that the communication of the first route entry is normal, first is sent information to by the first route entry
Load-balanced server；And if detect that the first route entry communicates obstacle, by secondary route entry forwarding information extremely
Second load-balanced server.
Further, detect whether the communication of the first route entry normally includes：Send detection information；Detection is in preset time
Inside whether receive via the first route entry feedack；If received via the first route entry feedack,
Detect that the communication of the first route entry is normal；And if do not received via the first route entry feedack, detect
One route entry communication failure.
Further, first port and second port are provided with web page server, wherein, open first port and represent
Allow web page server to send information to the first load-balanced server via the first route entry, close first port and represent not
Allow web page server to send information to the first load-balanced server via the first route entry, open second port and represent to permit
Perhaps web page server sends information via secondary route entry to the second load-balanced server, closes second port and represents not permit
Perhaps web page server sends information via secondary route entry to the second load-balanced server, is detecting the first route entry
After communication is normal, before the first load-balanced server is sent information to by the first route entry, this method also includes：
Open first port and simultaneously close off second port.
Further, sending information to the first load-balanced server by the first route entry includes：Detect first end
Whether mouth is opened；And in the case where detecting first port to open, pass through the first route entry forwarding information to first
Load-balanced server.
Further, first port and second port are provided with web page server, wherein, open first port and represent
Allow web page server to send information to the first load-balanced server via the first route entry, close first port and represent not
Allow web page server to send information to the first load-balanced server via the first route entry, open second port and represent to permit
Perhaps web page server sends information via secondary route entry to the second load-balanced server, closes second port and represents not permit
Perhaps web page server sends information via secondary route entry to the second load-balanced server, is detecting the first route entry
After obstacle occurs in communication, before by secondary route entry forwarding information to the second load-balanced server, this method is also
Including：Close first port and open second port simultaneously.
Further, the first route entry has the default priority of first path first and first path second preferential
Level, the priority of first path first represent that perform web page server sends out via the first route entry to the first load-balanced server
Send the priority of message, secondary route entry has second the first priority of path, second the first priority of path represent via
Secondary route entry sends the priority of message to the second load-balanced server, and second the first priority of path is less than the first via
The priority of footpath first, if detecting that the first route entry communicates obstacle, it is negative to send information to second by secondary route entry
Carrying equalization server includes：The priority of first path first is changed to the priority of first path second, wherein, first path
Two priority are less than second the first priority of path；Judge whether secondary route entry is highest priority in multiple route entrys
Route entry；And judging situation of the secondary route entry for the route entry of highest priority in multiple route entrys
Under, the second load-balanced server receives the information of secondary route entry forwarding.
To achieve these goals, according to another aspect of the present invention, there is provided a kind of server load balancing device.Clothes
Business device load balancing apparatus is used for the load balancing of multiple web page servers, in each web page server and load-balanced server
Between be provided with multiple route entrys, load-balanced server includes the first load-balanced server and the second load balancing service
Device, multiple route entrys include the first route entry and secondary route entry, the first route entry be each web page server and
The path of information is sent between first load-balanced server, secondary route entry is that each web page server and the second load are equal
The path of information is sent between weighing apparatus server, is included according to the server load balancing device of the present invention：Detection unit, for examining
Whether normal survey the communication of the first route entry；First transmitting element, for detecting the normal feelings of the first route entry communication
Under condition, the first load-balanced server is sent information to by the first route entry；And second transmitting element, for detecting
In the case of going out the first route entry communication obstacle, pass through secondary route entry forwarding information to the second load-balanced server.
Further, detection unit includes：Second sending module, for sending detection information；First detection module, it is used for
Whether detection is received in preset time via the first route entry feedack；Second detection module, for receiving
In the case of via the first route entry feedack, detect that the communication of the first route entry is normal；And the 3rd detection
Module, if in the case where not receiving via the first route entry feedack, detecting that the first route entry is led to
Interrogate failure.
Further, first port and second port are provided with web page server, wherein, open first port and represent
Allow web page server to send information to the first load-balanced server via the first route entry, close first port and represent not
Allow web page server to send information to the first load-balanced server via the first route entry, open second port and represent to permit
Perhaps web page server sends information via secondary route entry to the second load-balanced server, closes second port and represents not permit
Perhaps web page server sends information via secondary route entry to the second load-balanced server, is detecting the first route entry
After communication is normal, before the first load-balanced server is sent information to by the first route entry, the device also includes：
Configuration module, second port is simultaneously closed off for opening first port.
Further, the first transmitting element includes：4th detection module, for detecting whether first port opens；And
Sending module, in the case where detecting first port to open, by the first route entry forwarding information to first negative
Carry equalization server.
By the present invention, using the method comprised the following steps：Whether normal detect the communication of the first route entry；If inspection
It is normal to measure the communication of the first route entry, the first load-balanced server is sent information to by the first route entry；If inspection
The first route entry communication obstacle is measured, passes through secondary route entry forwarding information to the second load-balanced server.Pass through this
It is whether normal that the communication of the first route entry is detected in invention, is determined by communicating normal route entry, by web page server
Middle information is sent to corresponding load-balanced server via normal route entry is communicated, and is solved when a set of load balancing takes
Business device delay machine when, the problem of corresponding web page server cisco unity malfunction.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart according to the server load balancing method of the present invention；
Fig. 2 is the schematic diagram that client accesses web page server；And
Fig. 3 is the schematic diagram according to the server load balancing device of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order that those skilled in the art more fully understand application scheme, below in conjunction with the embodiment of the present application
Accompanying drawing, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application part, rather than whole embodiments.Based on the embodiment in the application, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model of the application protection
Enclose.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to embodiments herein described herein.In addition, term " comprising " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing series of steps or unit
Process, method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but may include without clear
It is listing to Chu or for the intrinsic other steps of these processes, method, product or equipment or unit.
Fig. 1 is the flow chart according to the server load balancing method of the present invention.As shown in figure 1, this method is including as follows
Step S101 to step S105：
Whether step S101, detection the first route entry communication are normal.
Web page server is multiple web page servers, is provided between each web page server and load-balanced server
Multiple route entrys, load-balanced server include the first load-balanced server and the second load-balanced server, Duo Gelu
First route entry and secondary route entry are included by entry, the first route entry is that each web page server and the first load are equal
Weigh and the path of information sent between server, secondary route entry be each web page server and the second load-balanced server it
Between send information path.
Whether detect the first route entry communication of first web page server to the first load-balanced server transmission information
Normally.
Specifically, the first web page server sends detection letter via the first route entry to the first load-balanced server
Breath；Whether detection first web page server in preset time is received via the first route entry feedack；If connect
Receive via the first route entry feedack, detect that the communication of the first route entry is normal；If do not receive via first
Route entry feedack, detect the first route entry communication failure.
Step S102, if detecting that the communication of the first route entry is normal, the is sent information to by the first route entry
One load-balanced server.
First port and second port are provided with web page server, wherein, open first port and represent to allow webpage
Server sends information via the first route entry to the first load-balanced server, closes first port and represents not allow webpage
Server sends information via the first route entry to the first load-balanced server, opens second port and represents to allow webpage to take
Business device sends information via secondary route entry to the second load-balanced server, closes second port and represents not allow webpage to take
Business device sends information via secondary route entry to the second load-balanced server, is detecting that the communication of the first route entry is normal
Afterwards, before the first load-balanced server is sent information to by the first route entry, open first port and simultaneously close off
Second port.
For example, different default routes is configured on web page server：A is route, gives tacit consent to and all-network data is sent to lvs
Load-balanced server A；B is route, gives tacit consent to and all-network data is sent to lvs load-balanced servers B；On web page server
Face configuration route A Metrec values are 1, and the Metrec values for routeing B are 500, and giving tacit consent to all packets all can be by routeing A forwardings.
It should be noted that lvs load-balanced server A, that is, above-mentioned first load-balanced server, lvs are born
Equalization server B is carried, that is, above-mentioned second load-balanced server.
The detected module of http agreements is opened, is created in web page server above with http agreements and is detected port
9001 and 9002, and a static resource http is provided:// web page server 1/heartbeat/heartbert.gif is used for quilt
Detection.Lvs load-balanced servers A detects 9001 ports；Lvs load-balanced servers B detects 9002 ports.Specifically, with
Exemplified by lvs load-balanced servers A detections port 9001, the port created by web page server above with http agreements and phase
The IP address composition access path (or being root) answered, lvs load-balanced servers provide according to the access path to static state
Source http:// web page server 1/heartbeat/heartbert.gif conducts interviews, if accessing static resource http://
Web page server 1/heartbeat/heartbert.gif successes, then illustrate that port 9001 has been switched on, if accessing static money
Source http:// web page server 1/heartbeat/heartbert.gif fails, then illustrates that port 9001 is closed.
Sending information to the first load-balanced server by the first route entry includes：Whether detection first port is opened
Open；In the case where detecting first port to open, pass through the first route entry forwarding information to the first load balancing service
Device.
Such as above-mentioned example, route A is detected by traceroute modes, if route A testing results are can positive normal open
News, then current route A metrec values are constant, in the case that 9001 ports have been switched on, web page server via route A to
Lvs load-balanced servers A sends information.
Step S103, if detecting that the first route entry communicates obstacle, pass through secondary route entry forwarding information to the
Two load-balanced servers.
First port and second port are provided with web page server, wherein, open first port and represent to allow webpage
Server sends information via the first route entry to the first load-balanced server, closes first port and represents not allow webpage
Server sends information via the first route entry to the first load-balanced server, opens second port and represents to allow webpage to take
Business device sends information via secondary route entry to the second load-balanced server, closes second port and represents not allow webpage to take
Business device sends information via secondary route entry to the second load-balanced server, is detecting the communication appearance of the first route entry
After obstacle, before by secondary route entry forwarding information to the second load-balanced server, first port is closed simultaneously
Open second port.First route entry has the default priority of first path first and first path second priority, the
One the first priority of path represents to perform web page server and send to the first load-balanced server via the first route entry to disappear
The priority of breath, secondary route entry have second the first priority of path, and second the first priority of path is represented via second
Route entry sends the priority of message to the second load-balanced server, and second the first priority of path is less than first path the
One priority, if detecting that the first route entry communicates obstacle, it is equal that the second load is sent information to by secondary route entry
Weighing apparatus server includes：The priority of first path first is changed to the priority of first path second, wherein, first path second is excellent
First level is less than second the first priority of path；Judge secondary route entry whether be highest priority in multiple route entrys road
By entry；In the case where judging route entry of the secondary route entry for highest priority in multiple route entrys, second
Load-balanced server receives the information of secondary route entry forwarding.
For example, different default routes is configured on web page server：A is route, gives tacit consent to and all-network data is sent to lvs
Load-balanced server A；B is route, gives tacit consent to and all-network data is sent to lvs load-balanced servers B；It should be noted that
Lvs load-balanced server A, that is, above-mentioned first load-balanced server, lvs load-balanced server B, that is,
Above-mentioned second load-balanced server.Configuration route A Metrec values are 1 on web page server, route B Metrec values
For 500, giving tacit consent to all packets all can be by routeing A forwardings.It should be noted that route A Metrec values 1 are that is, first
The priority of path first, B Metrec values 500 are route that is, second the first priority of path.
Route A is detected by traceroute modes, if route A testing results are to be unable to normal communication, then route A
Metrec values be changed to 1000, that is, route A Metrec values 1000 equivalent to the priority of first path second, and due to routeing
A metrec values 1000 are more than route B metrec values 500, i.e. the priority of first path second is excellent less than the second path first
First level.So all packet informations can all have route B to be forwarded to lvs load-balanced servers B.
Fig. 2 is that client accesses web page server schematic diagram.As shown in Fig. 2, it is necessary to obtain when client computer 200 accesses domain name A
Obtain the host server IP of domain name A bindings.Flow is as follows：First, client computer 200 sends request instruction to recursion server 100
(i.e.：Local bandwidth operator servers), the hair request of recursion server 100 is to resolution server；Then, resolution server is by domain
All poll host server IP that name is set return to recursion server 100, recursion server 100 by these IP return again to
Client computer 200, finally, the browser of client computer 200 can the one of IP of random access conduct interviews web page server.
Under lvs load balancing nat patterns, request instruction can only be transmitted to webpage clothes by lvs load-balanced servers 300
Request instruction can only be transmitted to web page server 402 or 403 by business device 400 or 401, lvs load-balanced server 301.
It is, a web page server can only correspond to a lvs load-balanced server, and a lvs load-balanced server can
With corresponding more web page servers.By detecting whether route entry on web page server communicates normally in the present invention, communicating
Web page server sends information via loaded server corresponding to the route entry to the route entry in the case of normal, is examining
When measuring route entry communication obstacle, web page server is via corresponding to another route entry to another route entry
Load-balanced server sends information, lvs load-balanced servers 300 or 301 is realized, wherein a load-balanced server
When going wrong, web page server 400,401,402 and 403 can normal work.
Server load balancing method provided in an embodiment of the present invention, by whether just to detect the communication of the first route entry
Often；If detecting that the communication of the first route entry is normal, the first load balancing service is sent information to by the first route entry
Device；If detecting that the first route entry communicates obstacle, pass through secondary route entry forwarding information to the second load balancing service
Device.By the present invention, solve when a set of load-balanced server delays machine, corresponding web page server can not normal work
The problem of making.Realize when any set load-balanced server goes wrong, corresponding web page server can be normal
Work.
It should be noted that can be in such as one group of computer executable instructions the flow of accompanying drawing illustrates the step of
Performed in computer system, although also, show logical order in flow charts, in some cases, can be with not
The order being same as herein performs shown or described step.
The embodiment of the present invention additionally provides a kind of server load balancing device, it is necessary to explanation, the embodiment of the present invention
Server load balancing device can be used for perform the embodiment of the present invention provided be used for server load balancing method.With
Under server load balancing device provided in an embodiment of the present invention is introduced.
Fig. 3 is the schematic diagram according to the server load balancing device of the present invention.As shown in figure 3, the device includes：Detection
Unit 10, the first transmitting element 20 and the second transmitting element 30.
Wherein, server load balancing device is used for the load balancing of multiple web page servers, in each web page server
Be provided with multiple route entrys between load-balanced server, load-balanced server include the first load-balanced server and
Second load-balanced server, multiple route entrys include the first route entry and secondary route entry, and the first route entry is
The path of information is each sent between web page server and the first load-balanced server, secondary route entry takes for each webpage
The path of information is sent between business device and the second load-balanced server.
Whether detection unit 10 is normal for detecting the communication of the first route entry.
Preferably, in server load balancing device provided in an embodiment of the present invention, detection unit includes：Second sends
Module, for sending detection information；First detection module, for detect whether receive in preset time via the first via by
Entry feedack；Second detection module, in the case where receiving via the first route entry feedack, examining
It is normal to measure the communication of the first route entry；And the 3rd detection module, if for do not receive it is anti-via the first route entry
In the case of the information of feedback, the first route entry communication failure is detected.
First transmitting element 20, in the case of detecting that the communication of the first route entry is normal, by the first via by
Entry sends information to the first load-balanced server.
First port and second port are provided with web page server, wherein, open first port and represent to allow webpage
Server sends information via the first route entry to the first load-balanced server, closes first port and represents not allow webpage
Server sends information via the first route entry to the first load-balanced server, opens second port and represents to allow webpage to take
Business device sends information via secondary route entry to the second load-balanced server, closes second port and represents not allow webpage to take
Business device sends information via secondary route entry to the second load-balanced server, is detecting that the communication of the first route entry is normal
Afterwards, before the first load-balanced server is sent information to by the first route entry, device also includes：Configuration module,
Second port is simultaneously closed off for opening first port.First transmitting element includes：4th detection module, for detecting first end
Whether mouth is opened；Sending module, in the case where detecting first port to open, being forwarded and being believed by the first route entry
Cease to the first load-balanced server.
Second transmitting element 30, in the case where detecting the first route entry communication obstacle, passing through secondary route
Entry forwarding information is to the second load-balanced server.
Server load balancing device provided in an embodiment of the present invention, the first route entry is detected by detection unit 10 and led to
Whether news are normal；First transmitting element 20 is in the case of detecting that the communication of the first route entry is normal, by the first via by bar
Mesh sends information to the first load-balanced server；Second transmitting element 30 is detecting the feelings of the first route entry communication obstacle
Under condition, pass through secondary route entry forwarding information to the second load-balanced server.By the present invention, solve when a set of load
Equalization server delay machine when, the problem of corresponding web page server cisco unity malfunction.Realize and work as any load balancing
When server goes wrong, corresponding web page server can normal work.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific
Hardware and software combines.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
1. a kind of server load balancing method, the load that the server load balancing method is used for multiple web page servers is equal
Weighing apparatus, multiple route entrys, the load balancing clothes are provided between each web page server and load-balanced server
Business device includes the first load-balanced server and the second load-balanced server, and the multiple route entry includes the first via by bar
Mesh and secondary route entry, first route entry are each web page server and first load-balanced server
Between send the path of information, the secondary route entry is each web page server and second load balancing service
The path of information is sent between device, it is characterised in that methods described includes：
Whether normal detect the first route entry communication；
If detecting that the first route entry communication is normal, described first is sent information to by first route entry
Load-balanced server；And
If detecting the first route entry communication obstacle, pass through the secondary route entry forwarding information to described second
Load-balanced server,
Wherein, first port and second port are provided with the web page server, wherein, open the first port and represent
Allow the web page server to send information to first load-balanced server via first route entry, close institute
First port is stated to represent not allowing the web page server via first route entry to first load balancing service
Device sends information, opens the second port and represents to allow the web page server via the secondary route entry to described the
Two load-balanced servers send information, close the second port and represent not allowing the web page server via described second
Route entry sends information to second load-balanced server, is detecting that obstacle occurs in first route entry communication
Afterwards, before by the secondary route entry forwarding information to second load-balanced server, methods described is also wrapped
Include：
Close the first port while open the second port,
Wherein, first route entry has the default priority of first path first and first path second priority, institute
State the priority of first path first and represent that perform the web page server loads via first route entry to described first
Equalization server sends the priority of message, and the secondary route entry has second the first priority of path, second tunnel
The priority of footpath first represents the priority to second load-balanced server transmission message via the secondary route entry,
The priority of second path first is less than the priority of first path first, if detecting that first route entry is led to
Obstacle is interrogated, sending information to second load-balanced server by the secondary route entry includes：By first path
One priority is changed to the priority of first path second, wherein, the priority of first path second is less than second path
First priority；Judge the secondary route entry whether be highest priority in the multiple route entry route entry；
And in the case where judging route entry of the secondary route entry for highest priority in the multiple route entry,
Second load-balanced server receives the information of the secondary route entry forwarding.
2. according to the method for claim 1, it is characterised in that whether detection the first route entry communication normally wraps
Include：
Send detection information；
Whether detection is received in preset time via the first route entry feedack；
If received via the first route entry feedack, detect that the first route entry communication is normal；
And
If do not received via the first route entry feedack, the first route entry communication failure is detected.
3. according to the method for claim 1, it is characterised in that first port and the are provided with the web page server
Two-port netwerk, wherein, open the first port and represent to allow the web page server via first route entry to described
First load-balanced server sends information, closes the first port and represents not allow the web page server via described the
One route entry sends information to first load-balanced server, opens the second port and represents to allow the webpage to take
Business device sends information via the secondary route entry to second load-balanced server, closes the second port and represents
Do not allow the web page server to send information to second load-balanced server via the secondary route entry, examining
After measuring the first route entry communication normally, first load is being sent information to by first route entry
Before equalization server, methods described also includes：
Open the first port and simultaneously close off the second port.
4. according to the method for claim 3, it is characterised in that send information to described the by first route entry
One load-balanced server includes：
Detect whether the first port opens；And
In the case where detecting the first port to open, pass through the first route entry forwarding information to described first
Load-balanced server.
5. a kind of server load balancing device, the load that the server load balancing device is used for multiple web page servers is equal
Weighing apparatus, multiple route entrys, the load balancing clothes are provided between each web page server and load-balanced server
Business device includes the first load-balanced server and the second load-balanced server, and the multiple route entry includes the first via by bar
Mesh and secondary route entry, first route entry are each web page server and first load-balanced server
Between send the path of information, the secondary route entry is each web page server and second load balancing service
The path of information is sent between device, it is characterised in that including：
Whether detection unit is normal for detecting the first route entry communication；
First transmitting element, in the case of detecting that the first route entry communication is normal, passing through the first via
First load-balanced server is sent information to by entry；And
Second transmitting element, in the case where detecting the first route entry communication obstacle, passing through second tunnel
By entry forwarding information to second load-balanced server,
Wherein, first port and second port are provided with the web page server, wherein, open the first port and represent
Allow the web page server to send information to first load-balanced server via first route entry, close institute
First port is stated to represent not allowing the web page server via first route entry to first load balancing service
Device sends information, opens the second port and represents to allow the web page server via the secondary route entry to described the
Two load-balanced servers send information, close the second port and represent not allowing the web page server via described second
Route entry sends information to second load-balanced server, and described device is additionally operable to：Detect the first via by
Entry communication there is obstacle after, by the secondary route entry forwarding information to second load-balanced server it
Before, close the first port while open the second port,
Wherein, first route entry has the default priority of first path first and first path second priority, institute
State the priority of first path first and represent that perform the web page server loads via first route entry to described first
Equalization server sends the priority of message, and the secondary route entry has second the first priority of path, second tunnel
The priority of footpath first represents the priority to second load-balanced server transmission message via the secondary route entry,
The priority of second path first is less than the priority of first path first, and second transmitting element is additionally operable to first
The priority of path first is changed to the priority of first path second, wherein, the priority of first path second is less than described the
Two the first priority of path；Judge the secondary route entry whether be highest priority in the multiple route entry route
Entry；And judging feelings of the secondary route entry for the route entry of highest priority in the multiple route entry
Under condition, second load-balanced server receives the information of the secondary route entry forwarding.
6. device according to claim 5, it is characterised in that the detection unit includes：
Second sending module, for sending detection information；
First detection module, the letter fed back via first route entry whether is received in preset time for detecting
Breath；
Second detection module, in the case where receiving via the first route entry feedack, detecting institute
It is normal to state the communication of the first route entry；And
3rd detection module, if in the case where not receiving via the first route entry feedack, detecting
Go out the first route entry communication failure.
7. device according to claim 5, it is characterised in that first port and are provided with the web page server
Two-port netwerk, wherein, open the first port and represent to allow the web page server via first route entry to described
First load-balanced server sends information, closes the first port and represents not allow the web page server via described the
One route entry sends information to first load-balanced server, opens the second port and represents to allow the webpage to take
Business device sends information via the secondary route entry to second load-balanced server, closes the second port and represents
Do not allow the web page server to send information to second load-balanced server via the secondary route entry, examining
After measuring the first route entry communication normally, first load is being sent information to by first route entry
Before equalization server, described device also includes：
Configuration module, the second port is simultaneously closed off for opening the first port.
8. device according to claim 7, it is characterised in that first transmitting element includes：
4th detection module, for detecting whether the first port opens；And
Sending module, in the case where detecting the first port to open, being forwarded by first route entry
Information is to first load-balanced server.
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