CN109302498A - A kind of network resource access method and device - Google Patents
A kind of network resource access method and device Download PDFInfo
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- CN109302498A CN109302498A CN201811445868.7A CN201811445868A CN109302498A CN 109302498 A CN109302498 A CN 109302498A CN 201811445868 A CN201811445868 A CN 201811445868A CN 109302498 A CN109302498 A CN 109302498A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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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
- H04L67/1004—Server selection for load balancing
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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
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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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
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/63—Routing a service request depending on the request content or context
Abstract
The application provides a kind of network resource access method and device, comprising: receives the DNS request that client is sent；The DNS request carries client target domain name to be visited；Determine the corresponding IP address of the target domain name；If it is determined that IP address be the destination Web server cluster virtual ip address, then detect the state of each service server in the destination Web server cluster；If each service server is in abnormality, the virtual ip address of the backup Web server cluster is returned into client, so that client accesses Internet resources based on the virtual ip address of the backup Web server cluster.Using method provided by the present application, can prevent because destination Web server cluster in service server exception caused by client network access interrupt the problem of.
Description
Technical field
This application involves computer communication field more particularly to a kind of network resource access methods and device.
Background technique
Web server cluster generally includes load-balancing device and at least one service server.Wherein, load is equal
Weighing apparatus equipment can be used for doing load balance process to the network access request that client is sent.Service server is mainly used for load
The network access request of equalizing equipment forwarding is handled.
Web server cluster is configured for a virtual ip address.Client can be based on the virtual of the Web server cluster
IP address accesses the Internet resources in Web server cluster.
For example, client can based on the virtual IP address when client accesses the Internet resources of the Web server cluster
Location, to Web server collection pocket transmission network access request.Load-balancing device in the Web server cluster receives client
After holding the network access request sent, the network access request can be sent to selected business service based on load-balancing algorithm
Device is handled.
But when all service servers in the Web server cluster are abnormal, then client transmission can not be handled
Network access request, so as to cause client network access interrupt.
Summary of the invention
In view of this, the application provides a kind of network resource access method and device, to prevent because of Goal Web Services
Caused by service server exception in device cluster the problem of client network access interrupt.
Specifically, the application is achieved by the following technical solution:
According to a first aspect of the present application, a kind of network resource access method is provided, the method takes applied to target Web
The load-balancing device being engaged in device cluster, the destination Web server cluster is configured for backup Web server cluster, described
Method includes:
Receive the DNS request that client is sent；The DNS request carries client target domain name to be visited；
Determine the corresponding IP address of the target domain name；
If it is determined that IP address be the destination Web server cluster virtual ip address, then detect the target Web
The state of each service server in server cluster；
If each service server is in abnormality, by the virtual IP address of the backup Web server cluster
Location returns to client, so that client accesses Internet resources based on the virtual ip address of the backup Web server cluster.
Optionally, the method also includes:
If at least one service server in each service server is in normal condition, by the target Web
The virtual ip address of server cluster returns to the client, to be based on the destination Web server cluster by the client
Virtual ip address access Internet resources.
Optionally, the method also includes:
If it is determined that IP address be not the destination Web server cluster virtual ip address, then the IP that will be determined
Address returns to client, so that client accesses Internet resources based on the IP address of the return.
Optionally, each service server in the destination Web server cluster is divided into multiple business services
Device group, one of service server group are main service server group, other service server groups are the main business server group
Backup traffic server group；
The method also includes:
Receive the network access request that the client is sent；
If each service server in the main business server group is abnormal, it is based on preset load-balancing algorithm,
First object service server is selected in the backup traffic server group；
The network access request is sent to the first object service server, by first object service server
Manage the network access request.
Optionally, the method also includes:
If there are normal service servers in the main business server group, it is based on preset load-balancing algorithm,
The second target service server is selected in the normal service server, by the second target service server process net
Network access request.
According to a second aspect of the present application, a kind of network resource accession device is provided, described device takes applied to target Web
The load-balancing device being engaged in device cluster, the destination Web server cluster is configured for backup Web server cluster, described
Device includes:
Receiving unit, for receiving the DNS request of client transmission；The DNS request carries the client and waits visiting
The target domain name asked；
Determination unit, for determining the corresponding IP address of the target domain name；
Detection unit, for if it is determined that IP address be the destination Web server cluster virtual ip address, then examine
Survey the state of each service server in the destination Web server cluster；
Return unit, if being in abnormality for each service server, by the backup Web server collection
The virtual ip address of group returns to client, so that client is accessed based on the virtual ip address of the backup Web server cluster
Internet resources.
Optionally, the return unit, if at least one service server being also used in each service server
In normal condition, then the virtual ip address of the destination Web server cluster is returned into the client, by the client
End group accesses Internet resources in the virtual ip address of the destination Web server cluster.
Optionally, the return unit, be also used to if it is determined that IP address be not the destination Web server cluster
The IP address determined then is returned to client by virtual ip address, so that client accesses net based on the IP address of the return
Network resource.
Optionally, each service server in the destination Web server cluster is divided into multiple business services
Device group, one of service server group are main service server group, other service server groups are the main business server group
Backup traffic server group；
Described device further include:
Network access process unit, the network access request sent specifically for receiving the client；If the main business
Each service server in server group of being engaged in is abnormal, then preset load-balancing algorithm is based on, in the backup traffic service
First object service server is selected in device group；The network access request is sent to the first object service server, with
The network access request is handled by first object service server.
Optionally, the network access process unit, if normal also particularly useful for existing in the main business server group
Service server, then be based on preset load-balancing algorithm, the second target industry is selected in the normal service server
It is engaged in server, by the second target service server process network access request.
Seen from the above description, on the one hand, since load-balancing device is returning to the destination Web server collection to client
When the virtual ip address of group is as network resource accession address, the service server in the destination Web server cluster is just detected
Whether Internet resources can be provided for the client, when detecting that each service server is abnormal in the destination Web server cluster
When, to client return backup Web server cluster IP address as network resource accession address so that backup Web service
Device cluster replaces the Web server cluster to provide Internet resources for client, so as to prevent the interruption of client traffic.
On the other hand, the application additionally uses main business server group and backup traffic in destination Web server cluster
The mechanism of server group handles the network access request received.After receiving network access request, if Web server collection
Each service server is abnormal in main business server group in group, then can will be sent to from the network access request of client
Backup traffic service group is handled, and the interruption of client traffic has been further prevented.
Detailed description of the invention
Fig. 1 is the networking schematic diagram of existing network resource accession；
Fig. 2 is a kind of networking schematic diagram of network resource accession shown in one exemplary embodiment of the application；
Fig. 3 is a kind of flow chart of network access resource allocation method shown in one exemplary embodiment of the application；
Fig. 4 is a kind of block diagram of network access resource devices shown in one exemplary embodiment of the application；
Fig. 5 is a kind of hardware structure diagram of load-balancing device shown in one exemplary embodiment of the application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
It is the networking schematic diagram of existing network resource accession referring to Fig. 1, Fig. 1.
In the networking of existing network resource accession, including user terminal and Web server cluster.The Web server
It include: load-balancing device, at least one service server in cluster.
After the load-balancing device in Web server cluster receives the network access request of client transmission, load
Equalizing equipment can be based on preset load-balancing algorithm, and a service server is selected at least one service server, by
The service server handles the network access request.
However, the Web server cluster can not when all service servers in the Web server cluster are abnormal
The network access request is handled, so as to cause the interruption of client network access.
Referring to fig. 2, Fig. 2 is a kind of networking schematic diagram of network resource accession shown in one exemplary embodiment of the application.
It include: client, destination Web server cluster, backup Web clothes in network resource accession networking shown in the application
Business device cluster.
Destination Web server cluster described herein is any one Web server cluster, and the application is the target
Web server cluster configuration backup Web server cluster.Destination Web server cluster and backup Web server cluster are visitor
The Internet resources that family end provides are identical.
Destination Web server cluster includes load-balancing device and at least one service server group, each business clothes
Device group of being engaged in includes at least one service server.One of service server group is main service server group, other business clothes
Business device group is backup traffic server group.
For example, as shown in Fig. 2, including two service server groups, respectively business service in destination Web server cluster
Device group 1 and service server group 2.
Service server group 1 is main service server group, and service server group 2 is backup traffic server group.
It also include load-balancing device and at least one service server group, Mei Geye in backup Web server cluster
Server group of being engaged in includes at least one service server.One of service server group is main service server group, other industry
Business server group is backup traffic server group.
For example, as shown in Fig. 2, including two service server groups, respectively business service in destination Web server cluster
Device group 3 and service server group 4.
Service server group 3 is main service server group, and service server group 4 is backup traffic server group.
In the embodiment of the present application, the load-balancing device in destination Web server cluster is receiving client transmission
DNS request when, if the corresponding IP address of domain name that DNS request carries is virtual ip address in destination Web server cluster,
Then load-balancing device detects the state of each service server.If each service server state is abnormality, to visitor
Family end returns to the virtual ip address of the backup Web server cluster of the destination Web server cluster, so that backup Web server
Cluster replaces the destination Web server cluster to provide Internet resources for client.
Since load-balancing device is returning to the virtual ip address of the destination Web server cluster to client as network
When resource access address, just detect whether the service server in the destination Web server cluster can provide net for the client
Network resource returns to backup Web to client when detecting that each service server is abnormal in the destination Web server cluster
The IP address of server cluster, so that backup Web server cluster replaces the Web server cluster to provide network money for client
Source, so as to prevent the interruption of client traffic.
It should be noted that the virtual ip address of destination Web server cluster is referred to as the following for narration is facilitated
The virtual ip address of backup Web server cluster is referred to as the second virtual ip address by one virtual ip address.Target Web is taken
Service server in business device cluster is referred to as the first service server, and the load balancing in destination Web server cluster is set
Standby referred to as the first load-balancing device.Service server in backup Web server cluster is referred to as the second business service
Load-balancing device in backup Web server cluster is referred to as the second load-balancing device by device.
Here first, second there is no physical meaning, also refers not to quantity etc., is intended merely to facilitate a kind of theory of narration
Method.
It is a kind of flow chart of network access resource allocation method shown in one exemplary embodiment of the application referring to Fig. 3, Fig. 3,
This method can be applicable to the load-balancing device (i.e. the first load-balancing device) in destination Web server cluster, the target
Web server cluster is configured for backup Web server cluster, and this method may include step as follows.
Step 301: the first load-balancing device can receive the DNS request that client is sent；The DNS request carries
State client target domain name to be visited；
Step 302: the first load-balancing device can determine the corresponding IP address of the target domain name.
When realizing, after the first load-balancing device receives the DNS request of client transmission, the available DNS
The client carried in request target domain name to be visited.
Then, the first load-balancing device can be searched and be somebody's turn to do in the corresponding relationship of preset multiple domain names and IP address
The corresponding IP address of target domain name.
Step 303: if the IP address that the first load-balancing device is determined is the virtual of the destination Web server cluster
IP address then detects the state of each service server in the destination Web server cluster.
When realizing, whether the detectable corresponding IP address of target domain name determined of the first load-balancing device is the
One virtual ip address.
If the corresponding IP address of target domain name is not the first virtual ip address, by the corresponding IP address of target domain name
Client is returned to, the corresponding IP address of the target domain name is based on by client and accesses Internet resources.
If the corresponding IP address of target domain name is the first virtual ip address, check in the destination Web server cluster
Each service server state.
For example, it is assumed that the first virtual ip address is IP2.
When the corresponding IP address of target domain name determined is IP1, then IP1 is returned into client, so that client
The corresponding Internet resources of end access IP1.
When the corresponding IP address of target domain name determined is IP2, each industry in target Web virtual server is detected
The state of business server.
When detecting, for each service server, the business clothes recorded are can be read in the first load-balancing device
The state of business device, the state of the service server includes normal condition and abnormality.First load-balancing device can pass through
The state of the service server read is in abnormality to determine that the service server is in normal condition.
It should be noted that the state of each service server in above-mentioned destination Web server cluster recorded is
It can constantly update, update mode is as follows.
First load-balancing device periodically can send probe messages to each service server；
For each service server, if received in preset duration service server return for the detection
The corresponding state of the service server is then updated to normal condition by the response message of message；If not received in preset duration
The response message for the probe messages returned to the server, then be updated to abnormal shape for the corresponding state of the server
State.
Step 304: if each service server is in abnormality, the first load-balancing device will back up Web
The virtual ip address of server cluster returns to client, so that virtual IP address of the client based on the backup Web server cluster
Address accesses the Internet resources in the backup Web server cluster.
If 1) each service server state in the destination Web server cluster is abnormality.
If each service server state in the destination Web server cluster is abnormality, the first load balancing is set
It is standby then can be by the virtual ip address of the backup Web server cluster in the destination Web server cluster (i.e. the second virtual IP address
Location) return to client.
Client, can be with tectonic network access request message, network access after receiving second virtual ip address
The purpose IP address of request message is exactly second virtual ip address, and then client can send out the network access request message
Backup Web server cluster is given to access Internet resources.
If 2) there is the service server in normal condition in the destination Web server cluster
If there is the service server in normal condition, the first load-balancing device in the destination Web server cluster
Then the first virtual ip address can be returned to the client.
Client, can be with tectonic network access request message, network access after receiving first virtual ip address
The purpose IP address of request message is exactly first virtual ip address, and then client can send out the network access request message
Destination Web server cluster is given to access Internet resources.
It should be noted that destination Web server cluster is identical with the Internet resources that backup Web server cluster provides,
So the first load-balancing device can return standby to client in destination Web server cluster when each service server exception
Second virtual ip address of part Web server cluster, so that client can access backup Web based on second virtual ip address
The Internet resources that server cluster provides, so that backup Web server cluster can replace destination Web server cluster is
Client provides Internet resources.
In addition, present invention also provides the mechanism how Web server cluster handles network access request, institute specific as follows
Show.
Specifically, each service server in the destination Web server cluster is divided into multiple service server groups,
In service server group be main service server group, other service server groups are the backup industry of the main business server group
Business server group.
After the first load-balancing device receives the network access request of client transmission, it may be determined that target Web clothes
The state for each service server being engaged in the main business server group in device cluster.
If each service server of the main business server group is abnormal, it is based on preset load-balancing algorithm,
In the backup traffic server group select first object service server, and by the network access request be sent to this first
Target service server, to handle the network access request by first object service server.
If there are normal service servers in the main business server group, it is based on preset load-balancing algorithm,
The second target service server is selected in the normal service server, by the second target service server process net
Network access request.
Certainly, above-mentioned machine can also be used when handling the network access request from client in backup Web server cluster
System, which is not described herein again.
Seen from the above description, on the one hand, since load-balancing device is returning to network resource accession address to client
When, it just detects whether the service server in the destination Web server cluster can provide Internet resources for the client, works as detection
When each service server is abnormal into the destination Web server cluster, the IP of backup Web server cluster is returned to client
Address is as network resource accession address, so that backup Web server cluster replaces the Web server cluster to provide for client
Internet resources, so as to prevent the interruption of client traffic.
On the other hand, the application additionally uses main business server group and backup traffic in destination Web server cluster
The mechanism of server group handles the network access request received.After receiving network access request, if Web server collection
Each service server is abnormal in main business server group in group, then can will be sent to from the network access request of client
Backup traffic service group is handled, and the interruption of client traffic has been further prevented.
Below by specifically example, and it is detailed to combine Fig. 2 to carry out the network resource access method that the application is supplied to
Ground explanation.
It is assumed that the virtual ip address of destination Web server cluster is IP2, the virtual ip address of backup Web server cluster
For IP22.
Service server group 1 in destination Web server cluster is main service server group, and service server group 2 is standby
Part service server group.
Service server group 3 in backup Web server cluster is main service server group, and service server group 4 is standby
Part service server group.
It is assumed that client has sent two DNS requests to the first load-balancing device, respectively DNS request 1 and DNS is asked
Ask 2.Wherein, the domain name carried in DNS request 1 is domain name 1.The domain name carried in DNS request 2 is domain name 2.
Assuming that the corresponding IP address of domain name 1 is IP1, the corresponding IP address of domain name 2 is IP2.
1) for DNS request 1
When the first load-balancing device DNS request 1, it may be determined that the corresponding IP address of domain name 1 that the DNS request 1 carries
(i.e. IP1).
Then, the first load equipment determines the virtual ip address of 1 corresponding IP address and destination Web server cluster of domain name
It is whether identical.
In this example, the first load equipment determines 1 corresponding IP address (i.e. IP1) of domain name and destination Web server cluster
Virtual ip address (i.e. IP2) it is not identical, IP1 can be returned to client by the first load-balancing device at this time, by client
Access the corresponding Internet resources of IP1.
2) for DNS request 2
When the first load-balancing device DNS request 2, it may be determined that the corresponding IP address of domain name 2 that the DNS request 2 carries
(i.e. IP2).
Then, the first load equipment determines the virtual ip address of 2 corresponding IP address and destination Web server cluster of domain name
It is whether identical.
In this example, the first load equipment determines 2 corresponding IP address (i.e. IP2) of domain name and destination Web server cluster
Virtual ip address (i.e. IP2) it is identical, then can check the state of each service server in target Web cluster.
If the state of each service server in target Web cluster is abnormality, IP22 is returned to client,
So that client is based on IP22 to backup Web server collection pocket transmission network access request.
If in target Web cluster there are normal service server, IP2 is returned to client, so that client
Based on IP2 to destination Web server collection pocket transmission network access request.
For the first load-balancing device:
After the first load-balancing device receives the network access request of client transmission, the first load equipment is detectable
The state of each service server in the service server group 1.
If there are normal service server in the service server group 1, the first load-balancing device is based on preset
Load-balancing algorithm selects a service server in the normal service server, and the network access request is sent
Give the service server selected processing.
If each service server is abnormal in the service server group 1, the second load-balancing device is based on preset negative
Equalization algorithm is carried, a service server is selected in service server group 2, and the network access request is sent to the selection
Service server processing out.
For the second load-balancing device:
After the second load-balancing device receives the network access request of client transmission, the second load equipment is detectable
The state of each service server in the service server group 3.
If there are normal service server in the service server group 3, the second load-balancing device is based on preset
Load-balancing algorithm selects a service server in the normal service server, and the network access request is sent
Give the service server selected processing.
If each moon server is abnormal in the service server group 3, the second load-balancing device is based on preset load
Equalization algorithm selects a service server in service server group 4, and the network access request is sent to this and is selected
Service server processing.
It is the description to network resource access method above.
Correspondingly, present invention also provides network resource accession devices corresponding with above-mentioned network resource access method.
Referring to fig. 4, Fig. 4 is a kind of block diagram of network access resource devices shown in one exemplary embodiment of the application.It should
Device can be applicable on the load-balancing device in destination Web server cluster, it may include unit as follows.
Receiving unit 401, for receiving the DNS request of client transmission；The DNS request carries the client and waits for
The target domain name of access；
Determination unit 402, for determining the corresponding IP address of the target domain name；
Detection unit 403, for if it is determined that IP address be the destination Web server cluster virtual ip address,
Then detect the state of each service server in the destination Web server cluster；
Return unit 404, if being in abnormality for each service server, by the backup Web service
The virtual ip address of device cluster returns to client, so that virtual ip address of the client based on the backup Web server cluster
Access Internet resources.
Optionally, the return unit 404, if being also used at least one service server in each service server
In normal condition, then the virtual ip address of the destination Web server cluster is returned into the client, by the visitor
Family end group accesses Internet resources in the virtual ip address of the destination Web server cluster.
Optionally, the return unit 404, be also used to if it is determined that IP address be not the destination Web server collection
The virtual ip address of group, then return to client for the IP address determined, so that client is visited based on the IP address of the return
Ask Internet resources.
Optionally, each service server in the destination Web server cluster is divided into multiple business services
Device group, one of service server group are main service server group, other service server groups are the main business server group
Backup traffic server group；
Described device further include:
Network access process unit 405 (being not shown in Fig. 4) is accessed specifically for receiving the network that the client is sent
Request；If each service server in the main business server group is abnormal, it is based on preset load-balancing algorithm, in institute
State selection first object service server in backup traffic server group；The network access request is sent to the first object
Service server, to handle the network access request by first object service server.
Optionally, the network access process unit 405, if existing just also particularly useful in the main business server group
Normal service server is then based on preset load-balancing algorithm, selects the second target in the normal service server
Service server, by the second target service server process network access request.
Correspondingly, present invention also provides the hardware structure diagrams for corresponding to Fig. 4 shown device.
It is a kind of hardware structure diagram of load-balancing device shown in one exemplary embodiment of the application referring to Fig. 5, Fig. 5.
The load-balancing device includes: communication interface 501, processor 502, machine readable storage medium 503 and bus
504；Wherein, communication interface 501, processor 502 and machine readable storage medium 503 complete mutual lead to by bus 404
Letter.Processor 502 is by reading and executing machine corresponding with network resource accession control logic in machine readable storage medium 503
Network described above resource access method can be performed in device executable instruction.
Machine readable storage medium 503 referred to herein can be any electronics, magnetism, optics or other physical stores
Device may include or store information, such as executable instruction, data, etc..For example, machine readable storage medium may is that easily
Lose memory, nonvolatile memory or similar storage medium.Specifically, machine readable storage medium 503 can be RAM
(Radom Access Memory, random access memory), flash memory, memory driver (such as hard disk drive), solid state hard disk,
Any kind of storage dish (such as CD, DVD) perhaps similar storage medium or their combination.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize application scheme.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (10)
1. a kind of network resource access method, which is characterized in that the method is applied to the load in destination Web server cluster
Equalizing equipment, the destination Web server cluster are configured for backup Web server cluster, which comprises
Receive the DNS request that client is sent；The DNS request carries client target domain name to be visited；
Determine the corresponding IP address of the target domain name；
If it is determined that IP address be the destination Web server cluster virtual ip address, then detect the Goal Web Services
The state of each service server in device cluster；
If each service server is in abnormality, the virtual ip address of the backup Web server cluster is returned
Back to client, so that client accesses Internet resources based on the virtual ip address of the backup Web server cluster.
2. the method according to claim 1, wherein the method also includes:
If at least one service server in each service server is in normal condition, by the Goal Web Services
The virtual ip address of device cluster returns to the client, with the void by the client based on the destination Web server cluster
Quasi- IP address accesses Internet resources.
3. the method according to claim 1, wherein the method also includes:
If it is determined that IP address be not the destination Web server cluster virtual ip address, then the IP address that will be determined
Client is returned to, so that client accesses Internet resources based on the IP address of the return.
4. the method according to claim 1, wherein each business service in the destination Web server cluster
Device is divided into multiple service server groups, and one of service server group is main service server group, other business
Server group is the backup traffic server group of the main business server group；
The method also includes:
Receive the network access request that the client is sent；
If each service server in the main business server group is abnormal, it is based on preset load-balancing algorithm, in institute
State selection first object service server in backup traffic server group；
The network access request is sent to the first object service server, is somebody's turn to do with being handled by first object service server
Network access request.
5. according to the method described in claim 4, it is characterized in that, the method also includes:
If there are normal service servers in the main business server group, it is based on preset load-balancing algorithm, in institute
It states and selects the second target service server in normal service server, to be visited by second target service server process network
Ask request.
6. a kind of network resource accession device, which is characterized in that described device is applied to the load in destination Web server cluster
Equalizing equipment, the destination Web server cluster are configured for backup Web server cluster, and described device includes:
Receiving unit, for receiving the DNS request of client transmission；It is to be visited that the DNS request carries the client
Target domain name；
Determination unit, for determining the corresponding IP address of the target domain name；
Detection unit, for if it is determined that IP address be the destination Web server cluster virtual ip address, then detect institute
State the state of each service server in destination Web server cluster；
Return unit, if being in abnormality for each service server, by the backup Web server cluster
Virtual ip address returns to client, so that client accesses network based on the virtual ip address of the backup Web server cluster
Resource.
7. device according to claim 6, which is characterized in that the return unit, if being also used to each business service
At least one service server in device is in normal condition, then returns the virtual ip address of the destination Web server cluster
Back to the client, to access Internet resources based on the virtual ip address of the destination Web server cluster by the client.
8. device according to claim 6, which is characterized in that the return unit, be also used to if it is determined that IP address
It is not the virtual ip address of the destination Web server cluster, then the IP address determined is returned into client, so that client
End group accesses Internet resources in the IP address of the return.
9. device according to claim 6, which is characterized in that each business service in the destination Web server cluster
Device is divided into multiple service server groups, and one of service server group is main service server group, other business
Server group is the backup traffic server group of the main business server group；
Described device further include:
Network access process unit, the network access request sent specifically for receiving the client；If the main business clothes
Each service server in device group of being engaged in is abnormal, then preset load-balancing algorithm is based on, in the backup traffic server group
Middle selection first object service server；The network access request is sent to the first object service server, by
The one target service server process network access request.
10. device according to claim 9, which is characterized in that the network access process unit, if also particularly useful for institute
It states in main business server group that there are normal service servers, is then based on preset load-balancing algorithm, described normal
The second target service server is selected in service server, by the second target service server process network access request.
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