CN106790739B - Pre-loading starting method, pre-loading system and management system of DNS service - Google Patents
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- CN106790739B CN106790739B CN201611028713.4A CN201611028713A CN106790739B CN 106790739 B CN106790739 B CN 106790739B CN 201611028713 A CN201611028713 A CN 201611028713A CN 106790739 B CN106790739 B CN 106790739B
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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
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Abstract
The invention provides a preloading starting method, a preloading system and a management system of DNS service. Under the condition that the DNS configuration file has a grammar error, normal starting of the DNS service is still ensured, so that the DNS service is prevented from being quitted due to the grammar error of the DNS configuration file, the overloading of the zone and the overloading of the domain name caused by the mistake of the configuration file are avoided, and the efficient and stable DNS service is ensured to be output outwards. In addition, the invention can automatically correct the DNS configuration file according to the detected grammar error, thereby reducing the performance loss caused by the grammar error to the minimum.
Description
Technical Field
The invention relates to the field of domain name service, in particular to a preloading starting method, a preloading system and a management system of DNS service.
Background
The dns (domain Name system) is a domain Name system, which is a distributed database on the internet as a mapping between domain names and IP addresses, and enables users to access the internet more conveniently without memorizing IP strings that can be read directly by machines.
The importance of providing efficient and stable DNS services to the outside is self-evident. Especially in large DNS services of 10 ten thousand level, the Docker container is widely used, and is an open source application container engine, so that developers can package their applications and dependency packages into a portable container, and then distribute the container to any popular Linux machine, and also implement virtualization. The Docker containers are fully sandboxed without any interface between each other. The use of the Docker container is very extensive, and under the condition that the Docker container grows at a high speed, the efficient and stable external supply of the DNS service is particularly important.
In a large DNS service system, as the number of domain names increases, the time for the DNS service system to load a zone and the time for reloading a zone after changing a domain name also increase, and if 10 ten thousand domain names need to be loaded, a considerable amount of time is required. In a DNS (domain name resolution system) environment, zone refers to a specific namespace assigned to a certain server. The instructions contained in the zone file, i.e. the zone profile, are able to resolve the internet domain name into a corresponding IP address.
In the current DNS service system, if many users change a domain name online, a syntax error may easily occur in a DNS configuration file after the change if the robustness of responding to a program for changing the domain name is insufficient, and the DNS service may not be started.
As shown in fig. 1, in the process of preloading a DNS service, after performing conventional program name detection and assertion callback, syntax detection of a DNS configuration file is performed, and if the detection fails, abort and exit are caused, so that the DNS service cannot be loaded, and a DNS service cannot be provided to a user. Where abort triggers the termination of an irregular process and exit directly exits the process.
The DNS service loads the configuration file/etc/name.conf by default, the grammar of the configuration file is preferentially detected before the DNS service is started by default, and if the grammar is wrong, abnormal exit is caused. In some large DNS service systems, frequent abnormal exits and zone reloads obviously seriously affect the user experience, and the performance loss of the system caused by the inability to provide robust DNS service is also quite serious.
Disclosure of Invention
In order to solve the technical problem, the invention provides a preloading starting method, a preloading system and a management system of DNS service. Under the condition that the configuration file has grammar errors, normal starting of the DNS service is still guaranteed, so that the DNS service is prevented from being quitted due to the grammar errors of the configuration file, overloading of the zone and overloading of the domain name due to the grammar errors of the configuration file are avoided, and efficient and stable DNS service is output outwards.
The invention is realized by the following technical scheme.
A preloading starting method of DNS service comprises the following steps:
acquiring a DNS configuration file;
and carrying out grammar detection on the DNS configuration file:
if the detection is passed, loading the regional configuration file, and starting DNS service according to the loading result of the regional configuration file;
and if the detection is not passed, generating warning information according to the detection result, loading a regional configuration file, and starting DNS service according to the loading result of the regional configuration file.
Further, if the detection fails, correcting a syntax error in the DNS configuration file according to the warning information after the DNS service is started.
Further, after correcting the syntax error in the DNS configuration file, reloading the DNS configuration file.
Further, the DNS profile is reloaded by recanfig or reload to eliminate syntax errors.
A system for preloading DNS services, comprising:
a DNS configuration file acquisition module used for acquiring a DNS configuration file;
the grammar detection module is used for carrying out grammar detection on the DNS configuration file;
the preloading module is used for preloading the DNS service according to the grammar detection result;
the preload module comprises:
the regional configuration file loading submodule is used for loading a regional configuration file;
the starting module is used for starting DNS service according to the loading result of the regional configuration file;
and the warning generation module is used for generating warning information according to the detection result.
Further, comprising:
the preload module further comprises:
and the correction submodule is used for correcting the grammar errors in the DNS configuration file according to the warning information.
Further, the system further comprises a reloading module, which is used for reloading the DNS configuration file after correcting the syntax error in the DNS configuration file.
Further, the reload module reloads the DNS configuration file by calling a recanfig or reload instruction to eliminate syntax errors.
A DNS service management system, comprising: the system comprises a DNS management and control server, a DNS service database and a DNS server, wherein the DNS server is loaded with the DNS preloading system;
the DNS service database is used for storing data related to DNS services;
the DNS management and control server receives a modification request for a domain name, and generates a DNS configuration file and a zone configuration file according to the modification request and data in the DNS service database;
the DNS configuration file and the area configuration file are sent to the DNS server;
the DNS server is used for acquiring the DNS configuration file and the area configuration file and providing DNS service for users according to the DNS configuration file and the area configuration file.
Further, the DNS configuration file and the zone configuration file are issued simultaneously.
The invention has the beneficial effects that:
the invention provides a preloading starting method, a preloading system and a management system of DNS service. The invention has the following advantages:
(1) under the condition that the configuration file has grammar errors, normal starting of the DNS service is still guaranteed, so that the DNS service is prevented from being quitted due to the grammar errors of the configuration file, overloading of the zone and overloading of the domain name due to the grammar errors of the configuration file are avoided, and efficient and stable DNS service is output outwards.
(2) And automatically correcting the configuration file according to the detected grammar error, thereby reducing the performance loss caused by the grammar error to the minimum.
(3) The management system of the DNS service can provide central control management for the domain name, respond to a modification request of a user for the domain name, and output the management information of the domain name outwards, so that each terminal can stably provide the DNS service according to the management information of the domain name.
Drawings
FIG. 1 is a flow chart of a method for preloading DNS services provided by the background art;
fig. 2 is a flowchart of a preloading starting method of the DNS service provided in embodiment 1;
fig. 3 is a schematic diagram of a preloading system of DNS provided in embodiment 2;
fig. 4 is a schematic diagram of a preload module provided in embodiment 2;
fig. 5 is a block diagram of a DNS service management system provided in embodiment 3;
fig. 6 is a schematic diagram of a DNS service management system provided in embodiment 3;
fig. 7 is a schematic diagram of a terminal provided in embodiment 4.
Detailed description of the invention
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1:
a method for preloading and starting DNS service, as shown in fig. 2, includes:
s101, acquiring a DNS configuration file;
the DNS configuration file is/etc/named.conf.
S102, carrying out grammar detection on the DNS configuration file:
s103, if the detection is passed, loading the regional configuration file, and starting DNS service according to the loading result of the regional configuration file;
and S104, if the detection is failed, generating warning information according to the detection result, loading a regional configuration file, and starting DNS service according to the loading result of the regional configuration file.
In the prior art, in a current DNS service system, if a number of users change a domain name on line, if a program responding to the change has a bug, syntax errors of a configuration file are easily caused, so that a DNS cannot be started and a service cannot be provided to the outside.
In this embodiment, if a syntax error occurs, syntax detection is skipped, normal activation of the bind and normal loading of the zone are guaranteed, and after the service is activated, the syntax error can be corrected, and reconfig or load is executed to eliminate the syntax error. bind is binding a local address with a set of interfaces, applicable to unconnected datagram or stream type sockets, used before connect () or listen () calls. zone is in a sense similar to domain meaning the administrative scope of the administrator. In a DNS (domain name resolution system) environment, zone refers to a specific namespace assigned to a certain server. The instructions contained in the zone file are capable of resolving the internet domain name to a corresponding IP address. The zone configuration file is a file for loading zone.
That is, if the detection fails, the syntax error in the DNS configuration file is corrected according to the warning information after the DNS service is started.
Specifically, after a syntax error in the DNS configuration file is corrected, the DNS configuration file is reloaded.
Specifically, the DNS profile is reloaded by recanfig or reload to eliminate syntax errors.
The embodiment provides a method for starting preloading of a DNS service, which is characterized in that the DNS service is still ensured to be normally started under the condition that a grammar error occurs in a configuration file, so that the DNS service is prevented from being quitted due to the grammar error occurring in the configuration file, the overloading of a zone and the overloading of a domain name caused by the mistake occurring in the configuration file are avoided, and the efficient and stable DNS service is output outwards. In addition, in the embodiment, the configuration file can be automatically corrected according to the detected grammar error, so that the performance loss caused by the grammar error is reduced to the minimum.
Example 2:
a preloading system for DNS, as shown in fig. 3, comprising:
a DNS configuration file obtaining module 201, configured to obtain a DNS configuration file;
a syntax detection module 202, configured to perform syntax detection on the DNS configuration file;
and the preloading module 203 is used for preloading the DNS according to the grammar detection result.
The preloading module 203, as shown in fig. 4, includes:
the area configuration file loading submodule 2031 configured to load an area configuration file;
a starting module 2032, configured to start a DNS service according to a loading result of the area configuration file;
a warning generating module 2033, configured to generate warning information according to the detection result.
And a correcting submodule 2034, configured to correct a syntax error in the DNS configuration file according to the warning information.
Specifically, the method further includes a reloading module 204, configured to reload the DNS configuration file after correcting a syntax error in the DNS configuration file.
Specifically, the reload module 204 reloads the DNS configuration file by calling a recanfig or reload instruction to eliminate syntax errors.
The embodiment provides a preloading system of a DNS, which can be used to implement the preloading starting method of the DNS service provided in embodiment 1. In the embodiment, the DNS service is still guaranteed to be normally started under the condition that the configuration file has a syntax error, so that the DNS service is prevented from being exited due to the syntax error of the configuration file, thereby preventing the zone from being overloaded and the domain name from being overloaded due to the syntax error of the configuration file, and outputting the efficient and stable DNS service outwards. In addition, in the embodiment, the configuration file can be automatically corrected according to the detected grammar error, so that the performance loss caused by the grammar error is reduced to the minimum.
Example 3:
a DNS service management system, as in fig. 5, comprising:
the system comprises a DNS management and control server 401, a DNS service database 402 and a DNS server 403, wherein a DNS preloading system is loaded in the DNS server 401; in the DNS preloading system, if syntax errors occur, loading of bind service and zone can be normally started, and DNS service is guaranteed to be provided for the outside.
The DNS service database 402 is used for storing data related to DNS services;
the DNS management and control server 401 receives a modification request for a domain name, and generates a DNS configuration file and a zone configuration file according to the modification request and data in the DNS service database 402;
the DNS profile and zone profile are sent to the DNS server 403.
Specifically, the DNS configuration file and the zone configuration file are issued simultaneously.
The DNS server 403 is configured to obtain the DNS configuration file and the zone configuration file, and provide DNS service to a user according to the DNS configuration file and the zone configuration file.
In the DNS preloading system, if no syntax error occurs, the state value ISC _ R _ SUCCESS is obtained, and if the syntax error occurs, warning is generated according to the syntax error and the syntax error is corrected according to the warning.
As shown in fig. 6, in the DNS service management system provided in this embodiment, specifically, an autonomously developed WENDNS platform is used as a DNS management and control SERVER 401, an autonomously developed DB _ SERVER is used as a DNS service database 402, and the DB _ SERVER issues a DNS configuration file and an area configuration file after change to each user.
Specifically, the WENDNS platform can receive requests for submitting domain name modifications sent by a plurality of users, and can generate a DNS configuration file and a zone configuration file according to the requests by performing data interaction with the DB _ SERVER. The modification results of the DNS configuration file and the zone configuration file are simultaneously sent to the DNS server 403 where each user is located, and the DNS server 403 provides DNS service to the user according to the modification results of the DNS configuration file and the zone configuration file.
Specifically, the DNS server 403 can still ensure that the DNS service is normally started when the configuration file has a syntax error, so as to avoid the DNS service being exited due to the syntax error of the configuration file, avoid the reloading of the zone and the reloading of the domain name due to the syntax error of the configuration file, and output the efficient and stable DNS service to the outside. And the configuration file can be automatically corrected according to the detected grammar errors, so that the performance loss caused by the grammar errors is reduced to the minimum. This feature of the DNS server 403 can provide a better experience for the user.
The embodiment can provide central control management for the domain name, respond to the modification request of the user for the domain name, and output the management information of the domain name outwards, so that each terminal can stably provide the DNS service according to the management information of the domain name.
Example 4:
the embodiment of the invention also provides a terminal which comprises a preloading system of the DNS. The terminal may be a mobile terminal or the like. Optionally, in this embodiment, the terminal may also be a computer terminal, and may also be replaced by any one computer terminal device in a computer terminal group.
Optionally, in this embodiment, the computer terminal or the mobile terminal may be located in at least one of a plurality of network devices of a computer network.
Alternatively, fig. 7 is a block diagram of a terminal according to an embodiment of the present invention. As shown in fig. 7, the terminal may include: one or more processors (only one of which is shown), memory, and transmission means.
The memory may be used for storing software programs and modules, and the processor may execute various functional applications and data processing by operating the software programs and modules stored in the memory. The memory may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include memory located remotely from the processor, which may be connected to a computer terminal or a mobile terminal through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The above-mentioned transmission device is used for receiving or transmitting data via a network. Examples of the network may include a wired network and a wireless network. In one example, the transmission device includes a network adapter that is connectable to the router via a network cable to communicate with the internet or a local area network. In one example, the transmission device is a radio frequency module, which is used for communicating with the internet in a wireless manner.
Wherein the memory is specifically used for storing preloaded applications of the DNS.
The processor can call the information and application program stored in the memory through the transmission device to execute the following steps:
optionally, the processor may further execute the program code of the following steps:
1. acquiring a DNS configuration file;
2. and carrying out grammar detection on the DNS configuration file:
3. if the detection is passed, loading the regional configuration file, and starting DNS service according to the loading result of the regional configuration file;
4. and if the detection is not passed, generating warning information according to the detection result, loading a regional configuration file, and starting DNS service according to the loading result of the regional configuration file.
The integrated unit in the above embodiments may be stored in a readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing one or more mobile terminals or computer devices (which may be personal computers, servers, network devices, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed terminal can be implemented in other manners. The above-described system embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (6)
1. A preloading starting method of DNS service is characterized by comprising the following steps:
acquiring a DNS configuration file;
and carrying out grammar detection on the DNS configuration file:
if the detection is passed, loading the regional configuration file, and starting DNS service according to the loading result of the regional configuration file;
if the detection is failed, generating warning information according to the detection result, loading a regional configuration file, starting DNS service according to the loading result of the regional configuration file, correcting a syntax error in the DNS configuration file according to the warning information after the DNS service is started, and reloading the DNS configuration file after the syntax error in the DNS configuration file is corrected.
2. The preload initiation method of DNS service according to claim 1, characterized in that:
reloading the DNS configuration file by recanfig or reloading to eliminate syntax errors.
3. A system for preloading DNS services, comprising:
a DNS configuration file acquisition module used for acquiring a DNS configuration file;
the grammar detection module is used for carrying out grammar detection on the DNS configuration file;
the preloading module is used for preloading the DNS service according to the grammar detection result;
the preload module comprises:
the area configuration file loading submodule is used for loading an area configuration file when the grammar detection result is that the detection fails;
the starting module is used for starting DNS service according to the loading result of the regional configuration file;
the warning generation module is used for generating warning information according to the detection result when the grammar detection result is that the detection fails;
the preload module further comprises: the correction submodule is used for correcting the grammar errors in the DNS configuration file according to the warning information;
the preloading system of the DNS service further comprises a reloading module which is used for reloading the DNS configuration file after correcting the grammar error in the DNS configuration file.
4. A system for preloading DNS services according to claim 3, characterized in that:
the reload module reloads the DNS configuration file by calling a recanfig or reload instruction to eliminate syntax errors.
5. A DNS service management system, comprising: the system comprises a DNS management server, a DNS service database and a DNS server, wherein the DNS server is loaded with the DNS preloading system of any one of claims 3-4;
the DNS service database is used for storing data related to DNS services;
the DNS management and control server receives a modification request for a domain name, and generates a DNS configuration file and a zone configuration file according to the modification request and data in the DNS service database;
the DNS configuration file and the area configuration file are sent to the DNS server;
the DNS server is used for acquiring the DNS configuration file and the area configuration file and providing DNS service for users according to the DNS configuration file and the area configuration file.
6. The DNS service management system according to claim 5,
the DNS configuration file and the area configuration file are issued simultaneously.
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| CN110795142B (en) * | 2019-10-18 | 2023-04-07 | 郑州阿帕斯科技有限公司 | Configuration file generation method and device |
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| US9250922B2 (en) * | 2013-02-28 | 2016-02-02 | Qualcomm Incorporated | Method and apparatus for prefetching peripheral device drivers for smart phones and other connected devices prior to HLOS boot |
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Effective date of registration: 20200513 Address after: 310052 room 508, floor 5, building 4, No. 699, Wangshang Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Alibaba (China) Co.,Ltd. Address before: 100029, B, 6 floor, World Trade Center, No. 36 East Third Ring Road, Dongcheng District, Beijing Patentee before: HEYI INTELLIGENT TECHNOLOGY (SHENZHEN) Co.,Ltd. |