CN105450775A - Load balancing method and load balancing device for DNS - Google Patents
Load balancing method and load balancing device for DNS Download PDFInfo
- Publication number
- CN105450775A CN105450775A CN201511001370.8A CN201511001370A CN105450775A CN 105450775 A CN105450775 A CN 105450775A CN 201511001370 A CN201511001370 A CN 201511001370A CN 105450775 A CN105450775 A CN 105450775A
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- China
- Prior art keywords
- dns
- load balancing
- domain name
- load
- client node
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Classifications
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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
-
- 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]
-
- 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
- H04L67/1017—Server selection for load balancing based on a round robin mechanism
Abstract
The invention discloses a load balancing method and a load balancing device for a DNS (Domain Name System). The method comprises the following steps of: according to a received domain name, acquiring an IP list corresponding to the domain name; under the condition that a load balancing strategy of the DNS is a polling strategy, by taking a client node as unit, executing polling to select a target client node; executing polling to the IP on the target client node to select a target IP, and transmitting the target IP. By means of adding a new polling strategy mode on the basis of original DNS server source codes, the method and the device can evenly distribute the load to each node and IP, and thus, load balance of a whole trunking system is realized.
Description
Technical field
The present invention relates to communication technical field, specifically, relate to a kind of load-balancing method for DNS and device.
Background technology
It is the IP of its correspondence that domain name system (DNS) server is mainly used in domain name mapping, and when a domain name has multiple IP, dns server can sort to these IP according to certain strategy, then the IP after sequence is returned to DNS client.DNS client, after the IP receiving these sequences, generally all can select the IP that ranks the first as the result of domain name mapping.But the dns server of standard all simply can only sort in units of IP, they all can not sort in units of node, and simultaneously they also all can not meet the demand dynamically returning IP according to the load of each node and IP.
Existing dns server all simply can only sort in units of IP, and they all can not sort in units of node, and simultaneously they also all can not meet the demand dynamically returning IP according to the load of each node and IP.
For the problems referred to above in correlation technique, at present effective solution is not yet proposed.
Summary of the invention
For the problems referred to above in correlation technique, the present invention proposes a kind of load-balancing method for DNS and device, can being assigned to Load Balanced on each node and IP, thus realizes the load balancing of whole group system.
Technical scheme of the present invention is achieved in that
According to an aspect of the present invention, a kind of load-balancing method for DNS is provided.
This load-balancing method comprises:
According to the IP list of the corresponding domain name of the domain Name acquisition received;
When the load balancing of DNS is polling schemas, in units of client node, carries out poll carry out select target client node;
Carry out poll to the IP on target client nodes carry out select target IP and send.
Wherein, in units of client node, carry out poll according to lexcographical order and carry out select target client node.
In addition, carry out poll according to lexcographical order to the IP on target client nodes carry out select target IP and send.
According to a further aspect in the invention, a kind of load balancing apparatus for DNS is provided.
This load balancing apparatus comprises:
Acquisition module, for the IP list according to the corresponding domain name of the domain Name acquisition received;
First selects module, for when the load balancing of DNS is polling schemas, carries out poll and carry out select target client node in units of client node;
Second selects module, carrys out select target IP for carrying out poll to the IP on target client nodes and sends.
Wherein, first selects module, is further used in units of client node, carrying out poll according to lexcographical order and carrys out select target client node.
In addition, second selects module, is further used for carrying out poll according to lexcographical order to the IP on target client nodes and carrys out select target IP and send.
The present invention, can being assigned to Load Balanced on each node and IP by adding new polling schemas pattern on original dns server source code basis, thus realize the load balancing of whole group system.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the load-balancing method for DNS according to the embodiment of the present invention;
Fig. 2 is the system flow chart of the load-balancing method for DNS according to the embodiment of the present invention;
Fig. 3 is according to the overall querying flow figure of the DNS of the embodiment of the present invention;
Fig. 4 is the flow chart of the DNS polling schemas according to the embodiment of the present invention;
Fig. 5 is the interaction figure of the DNS polling schemas according to the embodiment of the present invention;
Fig. 6 is the block diagram of the load balancing apparatus for DNS according to the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
According to embodiments of the invention, provide a kind of load-balancing method for DNS.
As shown in Figure 1, comprise according to the load-balancing method of the embodiment of the present invention:
Step S101, according to the IP list of the corresponding domain name of the domain Name acquisition received;
Step S103, when the load balancing of DNS is polling schemas, carries out poll and carrys out select target client node in units of client node;
Step S105, root carries out poll to the IP on target client nodes to be carried out select target IP and sends.
For system flow chart of the present invention as shown in Figure 2, dns server is responsible for resolving the domain name that sends over of subscription client and is returned corresponding IP according to corresponding load balancing.User can use the dns server on MGR node, also can use the DNS forwarding server that interface node runs.User, can configuring static domain name and DDNS by interface, also can configure the load balancing of DNS.
And for the overall procedure framework of DNS, the present invention does not make an amendment, amendment that what the present invention will make is its obtain configuration and carry out the process of IP list ordering by configuration, make it meet the demand of load balancing.The overall querying flow of DNS as shown in Figure 3.
When the load balancing of dns server is configured to polling schemas, then during each carry, dns server all can select the IP of each interface node according to lexcographical order circulation, if an interface node has multiple IP, then in all IP of this node, carry out repeating query again.In this example, the IP Address d istribution situation of each node is as shown in table 1:
Then during each carry, IP Circulating fibrocytes corresponding to domain name is 30.0.34.126,30.0.34.128,30.0.34.127 and 30.0.34.129.
When the load balancing of dns server is configured to polling schemas, then during each carry, dns server all can circulate and select the IP of each interface node, if an interface node has multiple IP, then in all IP of this node, carries out poll again.The flow process of its correspondence as shown in Figure 4.
This domain name as shown in Figure 5, when dns server receives the domain name that user sends, can be sent to the DNS load balancing module being positioned at mgs inside modules by interaction design of the present invention.All partition configuration information that DNS load balancing module is preserved by inner DNS configuration acquisition module acquisition mgs, then therefrom obtain information needed.According to the strategy obtained, perform polling schemas algorithm.After having run polling schemas algorithm, resolve IP by obtaining the optimum drawn by this policing algorithm, finally this IP is returned to dns server, this IP is returned to user by dns server again.
According to embodiments of the invention, additionally provide a kind of load balancing apparatus for DNS.
As shown in Figure 6, comprise according to the load balancing apparatus of the embodiment of the present invention:
Acquisition module 61, for the IP list according to the corresponding domain name of the domain Name acquisition received;
First selects module 62, for when the load balancing of DNS is polling schemas, carries out poll and carry out select target client node in units of client node;
Second selects module 63, carrys out select target IP for carrying out poll to the IP on target client nodes and sends.
Wherein, in one embodiment, according to the embodiment of the present invention first selects module 62, is further used in units of client node, carrying out poll according to lexcographical order and carrys out select target client node.
In addition, in one embodiment, according to the embodiment of the present invention second selects module 63, is further used for carrying out poll according to lexcographical order to the IP on target client nodes and carrys out select target IP and send.
In sum, by means of technique scheme of the present invention, by adding new polling schemas pattern on original dns server source code basis, can being assigned to Load Balanced on each node and IP, thus realize the load balancing of whole group system; Further, there is not Single Point of Faliure in dns server, and be that the access of process to client of DNS load balancing is transparent.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. for a load-balancing method for domain name system DNS, it is characterized in that, comprising:
According to the IP list of the corresponding domain name of the domain Name acquisition received;
When the load balancing of described DNS is polling schemas, in units of client node, carries out poll carry out select target client node;
Carry out poll to the IP on described target client nodes carry out select target IP and send.
2. load-balancing method according to claim 1, is characterized in that, carries out poll carry out select target client node according to lexcographical order in units of client node.
3. load-balancing method according to claim 1, is characterized in that, carries out poll carry out select target IP and send according to lexcographical order to the IP on described target client nodes.
4. for a load balancing apparatus for domain name system DNS, it is characterized in that, comprising:
Acquisition module, for the IP list according to the corresponding domain name of the domain Name acquisition received;
First selects module, for when the load balancing of described DNS is polling schemas, carries out poll and carry out select target client node in units of client node;
Second selects module, carrys out select target IP for carrying out poll to the IP on described target client nodes and sends.
5. load balancing apparatus according to claim 4, is characterized in that, described first selects module, is further used in units of client node, carrying out poll according to lexcographical order and carrys out select target client node.
6. load balancing apparatus according to claim 4, is characterized in that, described second selects module, is further used for carrying out poll according to lexcographical order to the IP on described target client nodes and carrys out select target IP and send.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201511001370.8A CN105450775A (en) | 2015-12-28 | 2015-12-28 | Load balancing method and load balancing device for DNS |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511001370.8A CN105450775A (en) | 2015-12-28 | 2015-12-28 | Load balancing method and load balancing device for DNS |
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| CN105450775A true CN105450775A (en) | 2016-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106210147A (en) * | 2016-09-13 | 2016-12-07 | 郑州云海信息技术有限公司 | A kind of load-balancing method based on poll and device |
| CN106254576A (en) * | 2016-09-12 | 2016-12-21 | 杭州华三通信技术有限公司 | A kind of message forwarding method and device |
| CN106330610A (en) * | 2016-08-29 | 2017-01-11 | 浪潮(北京)电子信息产业有限公司 | Load balance processing system and method |
| CN109151028A (en) * | 2018-08-23 | 2019-01-04 | 郑州云海信息技术有限公司 | A kind of distributed memory system disaster recovery method and device |
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| CN106330610A (en) * | 2016-08-29 | 2017-01-11 | 浪潮(北京)电子信息产业有限公司 | Load balance processing system and method |
| CN106254576A (en) * | 2016-09-12 | 2016-12-21 | 杭州华三通信技术有限公司 | A kind of message forwarding method and device |
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| CN109151028A (en) * | 2018-08-23 | 2019-01-04 | 郑州云海信息技术有限公司 | A kind of distributed memory system disaster recovery method and device |
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