CN111866203B - Domain name resolution method and device, readable storage medium and equipment - Google Patents
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- 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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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses a domain name resolution method, a domain name resolution device, a readable storage medium and equipment, and relates to the DNS technology. The domain name resolution method disclosed by the application comprises the following steps: matching a query domain name in the domain name query request with domain name groups in the corresponding relation between different template domain name configuration data and the domain name groups; if the matching is successful, replacing the domain name suffix of the inquired domain name with a template domain name suffix in the template domain name configuration data corresponding to the domain name group, and performing domain name resolution; and replacing the template domain name suffix in the resolution result with the domain name suffix of the query domain name, and taking the resolution result after the replacement processing as the response of the domain name query request. The technical scheme of the application can optimize logic processing aiming at different domain names with the same configuration, and achieves the purpose of mutual backup of multiple resolution groups.
Description
The application is a divisional application of a Chinese patent application with the application number of 201910354452.2 and the invention name of 'a domain name analysis method and system', which is submitted by the patent office of the national intellectual property office in 2019, 4 and 29.
Technical Field
The present invention relates to a Domain Name System (DNS) technology, and in particular, to a Domain Name resolution method, device, readable storage medium, and apparatus.
Background
A DNS (Domain Name System) is an internet basic service, which is a distributed database in which Domain names and IP addresses are mapped to each other, and enables users to conveniently access the internet; when a user accesses a certain site through a domain name, a DNS query request is firstly sent to a DNS server to query an IP address corresponding to the domain name, and then the user accesses resources of the server by using the IP address.
The DNS is also a basis for intelligent scheduling in a CDN (Content Delivery Network) service, and provides a domain name access service for a user, where a CDN manufacturer usually provides only one domain name access suffix (e.g., xxx. com), and in individual cases (to prevent a single domain name from having a problem, e.g., being hijacked), a plurality of access domain names are prepared for the user, thereby implementing mutual provisioning of multiple resolution groups and ensuring stable operation of the service.
In this case, the general configurations of these mutually-owned resolution groups are all identical, and only the access domain names provided are different. In a common processing method, original configuration data is completely copied and used in different resolution groups, and in this case, for DNS software (e.g., bind), in this case, a plurality of domain name configurations are loaded, and the configuration contents are completely the same, so that the memory occupation of the DNS software is large, the configuration redundancy is realized, the loading time of the whole configuration is influenced, and the service efficiency is influenced to a certain extent.
Disclosure of Invention
The application provides a domain name resolution method, a domain name resolution device, a readable storage medium and equipment, which can solve the problem that existing DNS software cannot achieve mutual backup of multiple resolution groups.
The application discloses domain name resolution system, including receiving module, sending module and core processing module, still include:
the configuration management module stores the corresponding relation between different template domain name configuration data and domain name groups;
a suffix processing module, configured to, when the receiving module receives a domain name query request, match a requested query domain name with a domain name group in the corresponding relationship, replace a domain name suffix of the query domain name with a template domain name suffix in template domain name configuration data corresponding to the matched domain name group in the corresponding relationship before the core processing module performs domain name resolution for the query domain name successfully matched with the domain name group in the corresponding relationship, and replace the template domain name suffix in the resolution result with a domain name suffix of the query domain name after the core processing module obtains a domain name resolution result, where the template domain name suffix is fed back as a response to the domain name query request through the sending module.
Optionally, in the system, after the suffix processing module matches the domain name query with the domain name group in the corresponding relationship, if the matching fails, the domain name query is directly sent to the core processing module for domain name resolution, and after the core processing module obtains a domain name resolution result, the resolution result is fed back as a response to the domain name query request through the sending module.
Optionally, in the above system, the configuration management module stores a correspondence between different template domain name configuration data and domain name groups, and includes:
the configuration management module stores a plurality of domain name groups, all domain names in the same domain name group correspondingly store the same set of template domain name configuration data, and different domain name groups correspondingly store different sets of template domain name configuration data.
Optionally, in the above system, the process of matching the queried domain name with the domain name group in the corresponding relationship by the suffix processing module includes:
and searching the query domain name from a plurality of domain name groups stored by the configuration management module, and if the query domain name is searched, successfully matching the query domain name with the domain name group containing the query domain name in the corresponding relation.
Optionally, in the system, the suffix processing module further stores a domain name suffix of the queried domain name for the queried domain name successfully matched with the domain name group in the corresponding relationship, and after the core processing module obtains a domain name resolution result of the queried domain name, determines that the matching result of the queried domain name and the domain name group in the corresponding relationship is successful, and then replaces the template domain name suffix in the resolution result with the stored domain name suffix of the queried domain name as a response of the domain name query request for feedback through the sending module.
The document also discloses a domain name resolution method, which comprises the following steps:
when a domain name query request is received, matching a requested query domain name with domain name groups in the corresponding relation between different pre-stored template domain name configuration data and the domain name groups;
if the query domain name is successfully matched with the domain name group in the corresponding relation, replacing the domain name suffix of the query domain name with a template domain name suffix in template domain name configuration data corresponding to the matched domain name group in the corresponding relation, and performing domain name resolution;
and after a domain name resolution result is obtained, replacing the template domain name suffix in the resolution result with the domain name suffix of the queried domain name, and sending the resolution result after replacement as a response of the domain name query request.
Optionally, in the above method, after matching the query domain name with the domain name group in the correspondence between the pre-stored different template domain name configuration data and the domain name group, the method further includes:
and if the group matching of the query domain name and the domain name in the corresponding relation fails, directly performing domain name resolution on the query domain name, and sending an obtained domain name resolution result as a response of the domain name query request.
Optionally, the method further includes:
a plurality of domain name groups are stored in advance, all domain names in the same domain name group correspondingly store the same set of template domain name configuration data, and different domain name groups correspondingly store different template domain name configuration data.
Optionally, in the method, the matching of the query domain name with the domain name group in the correspondence between the pre-stored different template domain name configuration data and the domain name group includes:
and searching the query domain name from the prestored domain name groups, and if the query domain name is searched, successfully matching the query domain name with the domain name group containing the query domain name in the corresponding relation.
Optionally, in the above method, after replacing the domain name suffix of the query domain name with the domain name suffix of the template domain name corresponding to the domain name group matched in the correspondence, the method further includes:
saving the domain name suffix of the query domain name;
after the domain name resolution result is obtained, the process of replacing the template domain name suffix in the resolution result with the domain name suffix of the query domain name includes:
after obtaining the domain name resolution result of the queried domain name, if the matching result of the queried domain name and the domain name group in the corresponding relation is determined to be successful, the template domain name suffix in the resolution result is replaced by the stored domain name suffix of the queried domain name.
Also disclosed herein is a domain name resolution system, comprising:
a processor;
and a memory storing processor-executable instructions;
wherein the processor is configured to:
executing instructions for implementing any of the domain name resolution methods described herein.
The technical scheme of the application provides a DNS resolution scheme, and the logic processing optimization can be performed on different domain names with the same configuration, so that the purpose of mutual backup of multiple resolution groups is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a DNS resolution system in an embodiment of the present application;
fig. 2 is a diagram of a corresponding relationship between domain name grouping and template domain name configuration in the embodiment of the present application;
fig. 3 is a flow chart of DNS resolution in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be further described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.
Example 1
The applicant of the invention proposes that the aim of mutual backup of multiple analysis groups of DNS software can be realized by modifying the internal logic of the DNS software.
The following describes the principle of the DNS resolution system according to this embodiment in detail by taking an actual implementation as an example. The scheme includes a configuration management module, a DNS receiving module (also referred to as simply a receiving module), a suffix processing module, a core processing module, a DNS sending module (also referred to as simply a sending module), and the like, and the architecture thereof is as shown in fig. 1.
A configuration management module: the module is used for managing the corresponding relation between different template domain name configuration data and domain name groups, and the configuration can indicate that domain names in the same domain name group use the same template domain name configuration data, namely, a plurality of domain names in the domain name group using the same template domain name configuration data are mutually prepared resolution groups, so that the mutual preparation of a plurality of resolution groups is realized, and a user can rapidly switch among the plurality of domain names in the same domain name group according to actual needs (for example, after the user uses a testa.com domain name as an acceleration domain name, if the domain name has a problem, the user can switch to different domain names such as testb.com under the same domain name group).
In this embodiment, the correspondence between different template domain name configuration data and domain name groups is shown in fig. 2, where the template-associated domain names are all domain names in the same domain name group. In this context, a template domain name may be considered as an unrealistic domain name, which is mainly used to define a piece of configuration data, and a plurality of really existing domain names may use the same configuration at the same time. Fig. 2 herein is only an example of the above correspondence, i.e., a domain name group and its corresponding template domain name configuration data. In other scenarios, the correspondence between the template domain name configuration data and the domain name groupings may further include a plurality of domain name groupings, each domain name grouping corresponding to a set of template domain name configuration data, and the template domain name configuration data corresponding to different domain name groupings are different.
A DNS receiving module: is responsible for receiving DNS query requests.
A DNS sending module: responsible for sending replies to DNS query requests.
A suffix processing module: the module is divided into two processes:
and 2, after the processing of the core processing module is finished and before the DNS sending module prepares to send the response result, if the domain name group is matched before, restoring the corresponding template domain name in the domain name resolution result back to the suffix of the real request domain name (namely, the domain name suffix of the query domain name) to be used as the response result of the DNS query request. A core processing module: and the DNS query request is processed, and a corresponding response result is found from the template domain name configuration data (namely, the query domain name resolution is carried out).
The process of performing DNS resolution by the DNS resolution system may refer to the flow shown in fig. 3, and mainly includes the following operation steps:
s1, firstly, a DNS receiving module receives a DNS inquiry request;
s2, extracting query domain name (such as www.testa.com) from DNS query request, judging whether the domain name matches with the configured domain name group (namely searching the queried domain name from the template associated domain name shown in FIG. 2), if the matching is successful (namely the queried domain name exists in the template associated domain name), executing step S3, and if the matching is unsuccessful, executing step S4;
in this embodiment, the manner of determining whether the queried domain name is matched with the domain name group may be that the queried domain name is compared with each domain name in the domain name group, and if the domain name group includes a domain name completely consistent with the queried domain name through comparison, it is determined that the queried domain name is matched with the domain name group.
S3, replacing the suffix of the template domain name corresponding to the domain name group to which the queried domain name belongs (for example, changing the suffix of www.testa.com to www.template1.com), at this time, the original domain name suffix (testa. com) needs to be saved for restoration after processing (i.e., for the operation of S6);
s4, DNS core logic processing is carried out, and the resolution result of the corresponding domain name is searched (www.template1.com 600IN A1.1.1.1).
S5, after the core processing is completed, processing according to the matching condition (i.e. the matching result of the above step S2) checked before, i.e. the queried domain name matches with the domain name group in the configuration, then executing step S6, if the queried domain name does not match with the domain name group in the configuration, then executing step S7;
s6, the follow-up of the template domain name IN the analysis result is replaced by the suffix of the stored real domain name, namely the analysis result after replacement is changed into www.testa.com 600IN A1.1.1.1;
and S7, the DNS sending module sends out the DNS analysis result.
Example 2
The embodiment provides a DNS resolution method, which mainly includes the following operations:
receiving a domain name query request, and matching a query domain name in the domain name query request with a domain name group from the corresponding relation between different pre-stored template domain name configuration data and the domain name group;
when the query domain name is successfully matched with the domain name group in the pre-stored corresponding relation, replacing the domain name suffix of the query domain name with the domain name suffix of the template domain name corresponding to the matched domain name group in the corresponding relation, and then performing domain name resolution;
and after the domain name resolution result is obtained, reducing the domain name suffix of the template domain name in the resolution result into a domain name suffix for inquiring the domain name, and finally sending the resolution result after replacement processing as a response of the domain name inquiry request.
The corresponding relationship between the pre-stored different template domain name configuration data and the domain name grouping in this embodiment may be implemented by pre-storing a plurality of domain name groupings, and then correspondingly storing different template domain name configuration data for different domain name groupings. Therefore, the domain names in the same domain name group use the same template domain name configuration data, so that a plurality of domain names in the same domain name group are mutually backup resolution groups, and mutual backup of a plurality of resolution groups is realized. Particularly, the same template domain name configuration data is used for a plurality of domain names, repeated configuration and storage are not needed, configuration operation is simplified, and the occupation of storage space is reduced.
In this embodiment, there are various ways to match the query domain name with the domain name groups in the correspondence between the pre-stored different template domain name configuration data and the domain name groups, one of the ways may be to search the query domain name from a plurality of pre-stored domain name groups, and if the query domain name is found, it is considered that the query domain name is successfully matched with the domain name group including the query domain name in the correspondence.
It should be noted that, according to the operation of the above method, after the domain name query is matched with the domain name group in the correspondence between the pre-stored different template domain name configuration data and the domain name group, a situation of failed matching may also occur, that is, when all the domain names in all the domain name groups are different from the domain name query, the matching is considered to be failed, at this time, the operation may be performed according to the prior art, that is, the domain name query is directly subjected to domain name resolution without performing suffix replacement operation, and the obtained domain name resolution result is sent as a response to the domain name query request. It can be seen that the present application also achieves compatibility with the prior art while optimizing configuration operations.
Example 3
The DNS resolution system provided in this embodiment may be a DNS resolution software system, a DNS resolution device, or the like. It mainly comprises: a processor; and a memory storing processor-executable instructions.
Wherein the processor is configured to:
receiving a domain name query request, and matching a query domain name in the domain name query request with a domain name group from the corresponding relation between different pre-stored template domain name configuration data and the domain name group;
when the query domain name is successfully matched with the domain name group in the pre-stored corresponding relation, replacing the domain name suffix of the query domain name with the domain name suffix of the template domain name corresponding to the matched domain name group in the corresponding relation, and then performing domain name resolution;
and after the domain name resolution result is obtained, reducing the domain name suffix of the template domain name in the resolution result into a domain name suffix for inquiring the domain name, and finally sending the resolution result after replacement processing as a response of the domain name inquiry request.
The DNS resolution system provided in this embodiment may implement the DNS resolution method shown in embodiment 2, and therefore, for other operations performed on the processor of the system, reference may be made to corresponding contents of embodiment 2, which is not described herein again.
It can be seen from the foregoing embodiments that the technical solution of the present application provides a DNS resolution scheme, which can perform logic processing optimization for different domain names with the same configuration, so as to achieve the purpose of mutual backup of multiple resolution groups, and has the following advantages:
1. because the DNS analysis core processing logic is modified, extra memory occupation and heavy load time cannot be increased along with the increase of the analysis group backup;
2. the configuration is more flexible and is not bloated;
3. a plurality of resolution groups are provided, each resolution group corresponds to the same configuration data, each domain name in the same resolution group does not need to be configured, the operation of repeatedly setting the same configuration data is subtracted, the operation is optimized on the existing configuration data, and therefore the influence on DNS software is very small.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied in the medium. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, including, but not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by the computer, and the like. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (9)
1. A domain name resolution method is characterized by comprising the following steps:
matching a query domain name in the domain name query request with domain name groups in the corresponding relation between different template domain name configuration data and the domain name groups;
if the matching is successful, replacing the domain name suffix of the inquired domain name with a template domain name suffix in the template domain name configuration data corresponding to the domain name group, and performing domain name resolution; replacing a template domain name suffix in the resolution result with a domain name suffix of the query domain name, and taking the resolution result after the replacement processing as a response of the domain name query request;
wherein the template domain name is used for defining configuration data which can be used by a plurality of domain names in the domain name group corresponding to the template domain name.
2. The domain name resolution method according to claim 1, wherein the matching of the queried domain name in the domain name query request with the domain name group in the correspondence between the different template domain name configuration data and the domain name group further comprises:
and if the matching fails, performing domain name resolution on the queried domain name, and taking the resolution result as the response of the domain name querying request.
3. The domain name resolution method according to claim 1, wherein the method for determining the matching success comprises:
and respectively comparing the query domain name with each domain name in the domain name group, and if the domain name group contains domain names which are completely consistent with the query domain name, determining that the query domain name is successfully matched with the domain name group.
4. The domain name resolution method according to claim 1, wherein after the operation of replacing the domain name suffix of the queried domain name with the template domain name suffix in the template domain name configuration data corresponding to the domain name group, the method further comprises: the domain name suffix of the queried domain name is saved.
5. The domain name resolution method according to claim 4, wherein the replacing the template domain name suffix in the resolution result with the domain name suffix of the query domain name comprises:
and replacing the template domain name suffix in the analysis result with the stored domain name suffix of the query domain name.
6. A domain name resolution apparatus, comprising:
a suffix processing module, which is used for matching the domain name inquired in the domain name inquiry request with the domain name groups in the corresponding relation between different template domain name configuration data and the domain name groups; if the matching is successful, replacing the domain name suffix of the inquired domain name with a template domain name suffix in the template domain name configuration data corresponding to the domain name group, and performing domain name resolution; replacing a template domain name suffix in the resolution result with a domain name suffix of the query domain name, and taking the resolution result after the replacement processing as a response of the domain name query request;
wherein the template domain name is used for defining configuration data which can be used by a plurality of domain names in the domain name group corresponding to the template domain name.
7. The domain name resolution device according to claim 6,
and the suffix processing module is also used for carrying out domain name resolution on the queried domain name if the matching fails, and taking the resolution result as the response of the domain name query request after obtaining the domain name resolution result.
8. A computer-readable storage medium, characterized in that the storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the domain name resolution method according to any one of claims 1 to 5.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the functions of the apparatus of any one of claims 6 to 7 when executing the program.
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| CN111866203A (en) | 2020-10-30 |
| CN111866197A (en) | 2020-10-30 |
| CN111866197B (en) | 2021-09-21 |
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