CN107204873B - Method for switching target domain name resolution server and related equipment - Google Patents
Method for switching target domain name resolution server and related equipment Download PDFInfo
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- CN107204873B CN107204873B CN201710309353.3A CN201710309353A CN107204873B CN 107204873 B CN107204873 B CN 107204873B CN 201710309353 A CN201710309353 A CN 201710309353A CN 107204873 B CN107204873 B CN 107204873B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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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]
Abstract
The embodiment of the invention relates to the technical field of communication, in particular to a method for switching a target domain name resolution server and related equipment, which are used for realizing automatic switching of the target domain name resolution server and reducing operation and maintenance cost. In the embodiment of the invention, a server switching request is received; the server switching request comprises an identifier of a target domain name resolution server to be switched; generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; sending the server calling request to a domain name resolution server; wherein the server invocation request is to: and enabling the domain name resolution server to determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script, and executing the script to switch the domain name to the target domain name resolution server.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a method for switching a target domain name resolution server and related equipment.
Background
The domain name system is a distributed database on the Internet as a mutual mapping between domain names and Internet Protocol (IP) addresses, and enables users to access the Internet more conveniently. The process of accessing the Internet by the user is as follows: the user inputs a domain name at a client, the client sends the domain name to a domain name resolution server, and the domain name resolution server resolves the domain name. The domain name resolution server can be an Nginx server, and the Nginx server is a load balancing server; and forwarding the IP address needing to be resolved to a target domain name resolution server through the Nginx server. The target domain name resolution server provides the corresponding service. A target domain name resolution server generally has a disaster recovery mechanism, that is, under one domain name, two or more servers are independently deployed to provide services for a World Wide Web (Web for short) system. One of which is the main server. The other is a standby server. When a Domain Name fails to be resolved in the primary server, an operation and maintenance worker needs to manually adjust a Domain Name System (DNS) configuration or modify a forwarding request configuration of the Nginx server to switch the Domain Name to a normally operating standby server, so as to ensure the normal operation of the Web System.
At present, operation and maintenance personnel are required to log in a server to operate for modifying the Nginx server forwarding request configuration, and the following disadvantages exist: (1) operation and maintenance personnel are required to have skilled capability of operating the domain name, such as shift operation and maintenance, each person must be capable of independently logging in a domain name resolution server to modify configuration or execute a script for modifying configuration, and the operation and maintenance cost is high; (2) switching to a normally operating standby server requires logging in a domain name resolution server, and modifying DNS configuration or modifying Nginx server forwarding request configuration, which is not enough in timeliness. Moreover, when the operation and maintenance personnel go out without a network or a computer, the operation can not be carried out, which is more inconvenient; (3) after the server is switched to the normal standby server, the operation and maintenance personnel are required to inform the switching result, and the message transmission is blocked.
Disclosure of Invention
The embodiment of the invention provides a method for switching a target domain name resolution server and related equipment, which are used for realizing automatic switching of the target domain name resolution server and reducing operation and maintenance cost.
The embodiment of the invention provides a method for switching a target domain name resolution server, which comprises the following steps:
receiving a server switching request; the server switching request comprises an identifier of a target domain name resolution server to be switched; generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; sending the server calling request to a domain name resolution server; wherein the server invocation request is to: and enabling the domain name resolution server to determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script, and executing the script to switch the domain name to the target domain name resolution server.
Optionally, the sending the server invocation request to the domain name resolution server includes: determining a calling interface corresponding to the target domain name resolution server according to the identifier of the target domain name resolution server; and sending the server calling request to a domain name resolution server through the calling interface.
Optionally, the target domain name resolution server includes a primary server or a standby server; if the target domain name resolution server is a main server, the calling interface corresponding to the target domain name resolution server is a main calling interface; and if the target domain name resolution server is the standby server, the calling interface corresponding to the target domain name resolution server is the standby calling interface.
Optionally, a master application slave platform and a standby application slave platform are deployed on the domain name resolution server; sending the server calling request to a domain name resolution server through the calling interface, wherein the server calling request comprises: if the target domain name resolution server is a master server, sending the server calling request to the master application slave platform through a master calling interface corresponding to the target domain name resolution server; and if the target domain name resolution server is a standby server, sending the server calling request to the standby application slave platform through a standby calling interface corresponding to the target domain name resolution server.
Optionally, the identification of the target domain name resolution server includes: the type identification of the domain name, the type identification of the machine room where the target domain name resolution server is located, and the type identification of the target domain name resolution server.
Optionally, the server call request includes a handover type parameter and a domain name type parameter; the generating a server call request according to the identifier of the target domain name resolution server includes: determining the switching type parameter in the server calling request according to the type identifier of the machine room in which the target domain name resolution server is located in the identifier of the target domain name resolution server and the type identifier of the target domain name resolution server; determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the identifier of the target domain name resolution server; and generating the server calling request according to the switching type parameter and the domain name type parameter.
The embodiment of the invention provides a method for switching a target domain name resolution server, which comprises the following steps: receiving the server calling request sent by the enterprise server; the server calling request comprises an identifier of a target domain name resolution server to be switched; the server calling request is generated according to the identifier of the target domain name resolution server in the server switching request after the enterprise server receives the server switching request; determining a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script; executing the script to switch the domain name to the target domain name resolution server.
An embodiment of the present invention provides a server, including: a receiving unit, configured to receive a server switching request; the server switching request comprises an identifier of a target domain name resolution server to be switched; the processing unit is used for generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; a sending unit, configured to send the server call request to a domain name resolution server; wherein the server invocation request is to: and enabling the domain name resolution server to determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script, and executing the script to switch the domain name to the target domain name resolution server.
Optionally, the processing unit is configured to: determining a calling interface corresponding to the target domain name resolution server according to the identifier of the target domain name resolution server; the sending unit is configured to: and sending the server calling request to a domain name resolution server through the calling interface.
Optionally, the target domain name resolution server includes a primary server or a standby server; if the target domain name resolution server is a main server, the calling interface corresponding to the target domain name resolution server is a main calling interface; and if the target domain name resolution server is the standby server, the calling interface corresponding to the target domain name resolution server is the standby calling interface.
Optionally, a master application slave platform and a standby application slave platform are deployed on the domain name resolution server; the sending unit is configured to: if the target domain name resolution server is a master server, sending the server calling request to the master application slave platform through a master calling interface corresponding to the target domain name resolution server; and if the target domain name resolution server is a standby server, sending the server calling request to the standby application slave platform through a standby calling interface corresponding to the target domain name resolution server.
Optionally, the identification of the target domain name resolution server includes: the type identification of the domain name, the type identification of the machine room where the target domain name resolution server is located, and the type identification of the target domain name resolution server.
Optionally, the server call request includes a handover type parameter and a domain name type parameter; the processing unit is configured to: determining the switching type parameter in the server calling request according to the type identifier of the machine room in which the target domain name resolution server is located in the identifier of the target domain name resolution server and the type identifier of the target domain name resolution server; determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the identifier of the target domain name resolution server; and generating the server calling request according to the switching type parameter and the domain name type parameter.
The embodiment of the invention provides a domain name resolution server, which comprises: the receiving unit is used for receiving the server calling request sent by the enterprise server; the server calling request comprises an identifier of a target domain name resolution server to be switched; the server calling request is generated according to the identifier of the target domain name resolution server in the server switching request after the enterprise server receives the server switching request; the processing unit is used for determining a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script; and the execution unit is used for executing the script so as to switch the domain name to the target domain name resolution server.
In the embodiment of the invention, the server switching request is received; the server switching request comprises an identifier of a target domain name resolution server to be switched; generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; sending the server calling request to a domain name resolution server; the domain name resolution server can determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script by calling the request, and after the script corresponding to the target domain name resolution server is determined, the script is executed to switch the domain name to the target domain name resolution server; therefore, the target domain name resolution server can be automatically switched, and operation and maintenance personnel do not need to log in the domain name resolution server to modify the configuration, so that the operation and maintenance cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for switching a target domain name resolution server according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a method for generating a server invocation request according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of another method for switching a target domain name resolution server according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a server according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a domain name resolution server according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 shows a schematic architecture diagram of a communication system to which an embodiment of the invention is applied. As shown in fig. 1, the communication system may include a terminal 100, a cloud server 102, an enterprise server 103, a domain name resolution server cluster 104, a target domain name resolution server 106; the terminal 100 is connected with the cloud server 102, the enterprise server 103, the domain name resolution server cluster 104, and the target domain name resolution server 106 through a wireless connection or a wired connection or other means.
The terminal 100 may communicate with one or more core networks via a Radio Access Network (RAN), and may include a Wireless terminal or a wired terminal, where the terminal may refer to a User Equipment (UE), an Access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a Wireless communication device, a User agent, or a User Equipment.
The cloud server 102 is configured to receive a message sent by a terminal, and may encrypt the received message and send the encrypted message to an enterprise server, so that secure transmission of the message may be achieved. The cloud server may be a Tencent cloud.
The server comprises an enterprise server 103, which can be used for a callback platform of a Software Development Kit (SDK) WeChat QQ or other third-party application based on WeChat, QQ or other third-party application; and can also be used for developing enterprise numbers, such as WeChat enterprise numbers, QQ enterprise numbers, and the like.
A domain name resolution server cluster 104, where the domain name resolution server cluster includes a plurality of domain name resolution servers, and the domain name resolution servers may be Nginx servers, and may forward a received domain name resolution request or an Application Programming Interface (API) request sent by a client to a corresponding target domain name resolution server 106; the domain name resolution server cluster 104 in the embodiment of the present invention includes a domain name resolution server 104a to which a main domain name points and a domain name resolution server 104b to which a standby domain name points. Some application slave platforms, such as a WeChat slave platform, a QQ slave platform or other third-party application slave platforms, can be deployed at the domain name resolution server; the domain name resolution server comprises a main server or a standby server, and when the domain name resolution server is the main server, the main server corresponds to the main application slave platform 105 a; when the domain name resolution server is the standby server, the standby server corresponds to the standby application slave platform 105 b.
A switching script of a target domain name resolution server can be deployed on the domain name resolution server; such as the type of the machine room where the target domain name resolution server is located, and the type of the target domain name resolution server; main is represented by main, and bak is represented by standby; main represents (main room main server), and bank main represents (standby room main server). The domain name type includes a main domain name or a standby domain name, when the domain name type is the main domain name, the main domain name corresponds to the domain name resolution server 104a to which the main domain name points, and the domain name resolution server 104a to which the main domain name points can be deployed with four switching scripts of a target domain name resolution server, such as (mian.main), (mian.bak), (bak.main), (bak.bak) shown in fig. 1; when the domain name type is the standby domain name, the standby domain name corresponds to the domain name resolution server 104b to which the standby domain name points, and four switching scripts of the target domain name resolution server may be deployed on the domain name resolution server 104b to which the standby domain name points, as shown in (mian.main), (mian.bak), (bak.main), (bak.bak).
The target domain name resolution servers 106 generally have a disaster recovery mechanism, that is, two or more target domain name resolution servers independently deploy and provide services under the same domain name, so that when one of the target domain name resolution servers fails, the target domain name resolution servers can be switched to other normal target domain name resolution servers to provide services.
Fig. 2 schematically illustrates a flowchart of a method for switching a target domain name resolution server according to an embodiment of the present invention.
Based on the system architecture shown in fig. 1, as shown in fig. 2, the method for switching a target domain name resolution server provided by the embodiment of the present invention includes the following steps:
In the embodiment of the invention, the server switching request is received; the server switching request comprises an identifier of a target domain name resolution server to be switched; generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; sending the server calling request to a domain name resolution server; the domain name resolution server can determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script by calling the request, and after the script corresponding to the target domain name resolution server is determined, the script is executed to switch the domain name to the target domain name resolution server; therefore, the target domain name resolution server can be automatically switched, and operation and maintenance personnel do not need to log in the domain name resolution server to modify the configuration, so that the operation and maintenance cost is reduced.
In the embodiment of the invention, the server switching request can be received by an enterprise server, and the server switching request can be sent by a terminal provided with WeChat, QQ or other third-party applications. Taking a terminal with a WeChat as an example, a user opens the WeChat, pays attention to an enterprise number developed by the enterprise server, and sends a server switching request to the enterprise number, and the enterprise server receives the server switching request sent by the enterprise number. The server switching request comprises the identification of a target domain name resolution server to which the domain name needs to be switched.
Optionally, the identification of the target domain name resolution server includes: the type identification of the domain name, the type identification of the machine room where the target domain name resolution server is located, and the type identification of the target domain name resolution server. The type of the domain name comprises a main domain name or a standby domain name, the type identifier of the machine room where the target domain name resolution server is located comprises a main machine room or a standby machine room, and the type identifier of the target domain name resolution server comprises a main server or a standby server. In the embodiment of the present invention, the identifier of the target domain name resolution server may be in a unified format in advance, for example, the unified format is "domain name type | type of the machine room where the target domain name resolution server is located.
In the embodiment of the invention, the server switching request can be numbers or characters or other simple identifiers, so that the user can conveniently input the enterprise number. If the identifier is a number, a character or other simple identifier, a number mapping relation, a character mapping relation or other simple identifier mapping relations are pre-stored in the enterprise server, and the number mapping relation comprises a corresponding relation between the number and an identifier of a target domain name resolution server to which the domain name needs to be switched; the character mapping relation comprises a corresponding relation between characters and the identification of a target domain name resolution server to be switched; and the other simple identifier mapping relations comprise corresponding relations between other simple identifiers and identifiers of target domain name resolution servers to which the domain names need to be switched.
The embodiment of the invention provides a mapping relation table of optional numbers and the identification of a target domain name resolution server to which a domain name needs to be switched. Table 1 exemplarily shows a mapping relationship table between a number and an identifier of a target domain name resolution server to which a domain name needs to be switched in the embodiment of the present invention; as shown in table 1, the mapping relationship has 8 groups of numbers, and each group of numbers corresponds to an identifier of a target domain name resolution server whose domain name needs to be switched; wherein, the domain name type corresponding to 10x is a main domain name; the domain name type corresponding to 12x is a standby domain name; the predetermined format of the identifier of the target resolution server is "domain name type | type of the machine room in which the target domain name resolution server is located.
Table 1 mapping relation table of numbers and identifications of target domain name resolution servers to which domain names need to be switched
| Number of | Identification of target domain name resolution server |
| 101 | Main domain name i main |
| 102 | Bak main domain name main |
| 103 | Main domain name | bak |
| 104 | Bak. main domain name |
| 121 | Main, domain name preparation |
| 122 | Bak for domain name |
| 123 | Main with domain name | bak |
| 124 | Bak is prepared for domain name |
Main in table 1 represents main, bak represents standby; taking the first row in table 1 as an example, 101 in the first row indicates: the domain name type is a main domain name, the type of a machine room where the domain name resolution server is located is a main machine room, and the type of a target domain name resolution server is a main target domain name resolution server; i.e. the first row of table 1 indicates: 101, the identifier of the target resolution server is: main Domain name | Main Room, Main Server. The user can obtain the mapping relation by sending a specified message to the enterprise number, the mapping relation is visible to the user, and the efficiency of switching the target domain name server can be improved in a digital mode.
In the embodiment of the present invention, if the server switching request is a number, a character, or another simple identifier, after the enterprise server receives the server switching request, the enterprise server first determines the identifier of the target domain name resolution server according to a mapping relationship table between the number, the character, or the other simple identifier and the identifier of the target domain name resolution server to which the domain name needs to be switched. Generating a server calling request according to the identifier of the target domain name resolution server; the server call request may include a handover type parameter and a domain name type parameter; determining the switching type parameter in the server calling request according to the type identifier of the machine room where the target domain name resolution server is located in the server switching request and the type identifier of the target domain name resolution server; determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the server switching request; and generating a server calling request according to the switching type parameter and the domain name type parameter.
Optionally, generating a server call request according to the identifier of the target domain name resolution server, further includes: determining the switching type parameter in the server calling request according to the type identifier of the machine room where the target domain name resolution server is located in the server switching request and the type identifier of the target domain name resolution server; determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the server switching request; determining a domain name address corresponding to the domain name type according to a mapping relation between the domain name type and the domain name address stored in advance; table 2 exemplarily shows a mapping table of domain name types and domain name addresses in the embodiment of the present invention; as shown in table 2, the domain name type includes a main domain name or a standby domain name, an address corresponding to the main domain name is a main domain name address, and an address corresponding to the standby domain name is a standby domain name address; for example, if the main domain name is hundred degrees, the corresponding main domain name address is baidu.con; determining the user parameter in the server calling request according to the user in the server switching initiating request; and generating a server calling request according to the switching type parameter, the domain name type parameter and the user parameter.
Table 2 exemplarily shows a mapping relation table between domain name types and domain name addresses in the embodiment of the present invention
| Domain name type | Domain name address |
| Main domain name | Main domain name address |
| Backup domain name | Backup domain name address |
Fig. 3 is a schematic diagram illustrating a method for generating a server call request according to an embodiment of the present invention, where, as shown in fig. 3, in order to improve the efficiency of switching a target domain name resolution server, a server switch request according to an embodiment of the present invention is represented by a numeral; the method for generating the server call request provided by the embodiment of the invention comprises the following steps:
it should be noted that, there is no sequence among the steps 304, 305, 306, 307;
and 308, the enterprise server generates a server calling request according to the switching type parameter, the domain name type parameter, the user parameter and the domain name address.
The method of generating a call request is illustrated with a specific example: the method comprises the steps that a user A sends a server switching request 101 to an enterprise server through an enterprise number concerned by WeChat on a terminal provided with the WeChat, and the enterprise server determines that the user A initiates the server switching request after receiving the server switching request 101; determining that the user A is the user parameter in the server invocation request, namely that "user is user A"; the enterprise server determines that the identifier of the target resolution server corresponding to 101 is a main domain name, a main computer room and a main server according to the mapping table; the main domain name is a domain name type parameter in the server calling request, namely "host ═ main"; determining that the domain name address corresponding to the main domain name is the main domain name address; the main computer room and the main server call a switching type parameter in the request for the server, namely "type ═ main"; the server call request is generated as follows: http:// main domain name address/interface name? user, main, user, main.
Optionally, the sending the server invocation request to the domain name resolution server includes: determining a calling interface corresponding to the target domain name resolution server according to the identifier of the target domain name resolution server; and sending the server calling request to a domain name resolution server through the calling interface. The calling interface in the embodiment of the invention can be an API interface, and the API interface has an authentication function and can enhance the security of the calling request.
The embodiment of the invention provides a relation between a target domain name resolution server and a calling interface, optionally, the target domain name resolution server comprises a main server or a standby server; if the target domain name resolution server is a main server, the calling interface corresponding to the target domain name resolution server is a main calling interface; and if the target domain name resolution server is the standby server, the calling interface corresponding to the target domain name resolution server is the standby calling interface.
Optionally, a master application slave platform and a standby application slave platform are deployed on the domain name resolution server; sending the server calling request to a domain name resolution server through the calling interface, wherein the server calling request comprises: if the target domain name resolution server is a master server, sending the server calling request to the master application slave platform through a master calling interface corresponding to the target domain name resolution server; and if the target domain name resolution server is a standby server, sending the server calling request to the standby application slave platform through a standby calling interface corresponding to the target domain name resolution server.
The embodiment of the invention provides a method for optionally sending a server call request to a domain name resolution server, which comprises the following steps:
and deploying a master application slave platform and a standby application slave platform on the domain name resolution server. If the master application slave platform is a master WeChat master platform, and if the target domain name resolution server is a master server, a calling interface corresponding to the target domain name resolution server is a master WeChat slave platform interface, and a WeChat callback platform developed on an enterprise server sends a server calling request through the master WeChat slave platform interface; if the standby application slave platform is a standby micro-letter slave platform, and if the target domain name resolution server is a standby server, the calling interface corresponding to the target domain name resolution server is a standby micro-letter slave platform interface, a micro-letter callback platform developed on the enterprise server sends a server calling request through the standby micro-letter slave platform interface, and sends the server calling request through the applied slave platform, so that second-level switching of the target server can be realized.
In this embodiment of the present invention, after the domain name resolution server executes the script to switch the domain name to the target domain name resolution server, the method further includes: if the domain name is determined to be successfully switched to the target domain name resolution server, sending a message of successful switching to the enterprise server; the enterprise server broadcasts the received successful message to the micro credit user, if the domain name is determined not to be successfully switched to the target domain name resolution server, the enterprise server sends a switching failure message to the enterprise server, and the enterprise server sends the received switching failure message to the user initiating the server switching request. Therefore, the message for switching the target domain name resolution server among the users can be transmitted and shared in real time.
To introduce the above method flow more clearly, fig. 4 exemplarily shows a schematic method flow diagram for switching a target domain name resolution server according to another embodiment of the present invention. The application in this embodiment is described by taking the wechat as an example, the terminal is installed with the wechat, the wechat pays attention to the enterprise number developed by the enterprise server, and a user paying attention to the wechat enterprise number can implement the operation of switching the target domain name resolution server; a WeChat callback platform and a WeChat slave platform are developed by utilizing a WeChat enterprise number SDK, the WeChat callback platform is deployed on an enterprise server, and the WeChat slave platform is deployed on a domain name resolution server. Further, the wechat slave platform can broadcast a message of successful switching of the target domain name resolution server through the wechat enterprise number. When the domain name resolution server fails, the user does not need to log in the domain name resolution server to modify the configuration or modify the configuration script, and the user does not need to switch the result of manually informing the switching target domain name resolution server. Therefore, the scheme realizes automatic switching of the target domain name resolution server, and does not need operation and maintenance personnel to log in the domain name resolution server to modify configuration, thereby reducing the operation and maintenance cost; the second-level switching of the target domain name resolution server is realized by executing the script according to the relation of the script corresponding to the target domain name resolution server. The process of switching the target domain name resolution server based on the WeChat SDK is described in the following.
As shown in fig. 4, the method includes:
Optionally, the terminal is provided with a WeChat, and the WeChat concerns the enterprise number; sending a server switching request to the Tencent cloud through the WeChat enterprise number; the server switching request may include an identifier of a target domain name resolution server to which the domain name needs to be switched; the characters or the digital messages can also be corresponding to corresponding character mapping relations or digital mapping relations, the character mapping relations comprise corresponding relations between the characters and the identifications of the target domain name resolution servers to be switched, the digital mapping relations comprise corresponding relations between the numbers and the identifications of the target domain name resolution servers to be switched, the numbers or the characters are used for facilitating user operation, user experience is improved, and switching efficiency of the target domain name servers is improved; in the embodiment of the present invention, the server switching request is illustrated as a number.
And step 403, the Tencent cloud sends an encrypted server switching request to the WeChat callback platform deployed on the enterprise server. The WeChat callback platforms called in the following steps are all WeChat callback platforms deployed on the enterprise server.
And step 404, the WeChat callback platform decrypts the received encrypted server switching request to obtain the decrypted server switching request.
And 405, the WeChat callback platform determines the identifier of the target domain name resolution server in the server switching request according to the obtained server switching request and the number list.
Optionally, the identification of the target domain name resolution server includes: the type identification of the domain name, the type identification of the machine room where the target domain name resolution server is located, and the type identification of the target domain name resolution server.
And 406, the WeChat callback platform generates a server calling request according to the identifier of the target domain name resolution server.
Optionally, the server call request includes a handover type parameter, a domain name type parameter, and a user parameter;
the generating a server call request according to the identifier of the target domain name resolution server includes: determining the switching type parameter in the server calling request according to the type identifier of the machine room in which the target domain name resolution server is located in the identifier of the target domain name resolution server and the type identifier of the target domain name resolution server; determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the identifier of the target domain name resolution server; determining the user parameter in the server calling request according to a user initiating a server switching request; generating a server calling request according to the switching type parameter, the domain name type parameter and the user parameter;
Optionally, whether the call is successful or not may be determined, according to the time for calling the response of the wechat slave platform interface, when the time for calling the response of the wechat slave platform interface is greater than a time threshold, the call is determined to be unsuccessful, and when the time for calling the response of the wechat slave platform interface is not greater than the time threshold, the call is determined to be successful.
And step 410, the WeChat callback platform sends a switching failure message to the Tencent cloud.
Step 411, the Tencent cloud sends the received message of the switching failure to the WeChat initiating the server switching request.
And step 412, the WeChat slave platform receives the server call request sent by the WeChat callback platform.
Step 414, the wechat slave platform executes the script to switch the domain name to the target domain name resolution server.
And 415, sending a response of switching to the target domain name resolution server from the WeChat slave platform to the WeChat callback platform. The target domain name resolution server response comprises a message of switching failure or a message of switching success which is sent from the WeChat slave platform to the WeChat callback platform; when the message of successful switching is sent, the code may be set to 0, and when the message of failed switching is sent, the code may be set to 1.
And step 417, the WeChat callback platform broadcasts a successful switching message to the enterprise number. Optionally, the message of successful handover includes the operator of handover, time of handover, and target domain name resolution server after handover.
And 418, the WeChat callback platform sends a switching failure message to the Tencent cloud.
Step 419, the Tencent cloud sends a switching failure message to the WeChat.
From the above, it can be seen that: in the embodiment of the invention, the server switching request is received; the server switching request comprises an identifier of a target domain name resolution server to be switched; generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; sending the server calling request to a domain name resolution server; the domain name resolution server can determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script by calling the request, and after the script corresponding to the target domain name resolution server is determined, the script is executed to switch the domain name to the target domain name resolution server; therefore, the target domain name resolution server can be automatically switched, and operation and maintenance personnel do not need to log in the domain name resolution server to modify the configuration, so that the operation and maintenance cost is reduced; further, the second-level switching of the target domain name resolution server can be achieved by calling the script.
Fig. 5 is a schematic structural diagram illustrating a server according to an embodiment of the present invention.
Based on the same concept, the embodiment of the present invention provides a server, as shown in fig. 5, a server 500 includes a receiving unit 501, a processing unit 502, and a transmitting unit 503. Wherein:
a receiving unit, configured to receive a server switching request; the server switching request comprises an identifier of a target domain name resolution server to be switched; the processing unit is used for generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; a sending unit, configured to send the server call request to a domain name resolution server; wherein the server invocation request is to: and enabling the domain name resolution server to determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script, and executing the script to switch the domain name to the target domain name resolution server.
Optionally, the processing unit is configured to: determining a calling interface corresponding to the target domain name resolution server according to the identifier of the target domain name resolution server; the sending unit is configured to: and sending the server calling request to a domain name resolution server through the calling interface.
Optionally, the target domain name resolution server includes a primary server or a standby server; if the target domain name resolution server is a main server, the calling interface corresponding to the target domain name resolution server is a main calling interface; and if the target domain name resolution server is the standby server, the calling interface corresponding to the target domain name resolution server is the standby calling interface.
Optionally, a master application slave platform and a standby application slave platform are deployed on the domain name resolution server; the sending unit is configured to: if the target domain name resolution server is a master server, sending the server calling request to the master application slave platform through a master calling interface corresponding to the target domain name resolution server; and if the target domain name resolution server is a standby server, sending the server calling request to the standby application slave platform through a standby calling interface corresponding to the target domain name resolution server.
Optionally, the identification of the target domain name resolution server includes: the type identification of the domain name, the type identification of the machine room where the target domain name resolution server is located, and the type identification of the target domain name resolution server.
Optionally, the server call request includes a handover type parameter and a domain name type parameter; the processing unit is configured to: determining the switching type parameter in the server calling request according to the type identifier of the machine room in which the target domain name resolution server is located in the identifier of the target domain name resolution server and the type identifier of the target domain name resolution server; determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the identifier of the target domain name resolution server; and generating the server calling request according to the switching type parameter and the domain name type parameter.
Fig. 6 is a schematic structural diagram illustrating a domain name resolution server according to an embodiment of the present invention.
Based on the same concept, the embodiment of the present invention provides a domain name resolution server, as shown in fig. 6, a domain name resolution server 600 includes a receiving unit 601, a processing unit 602, and an executing unit 603. Wherein:
the embodiment of the invention provides a domain name resolution server for switching a target domain name resolution server, which comprises the following steps: the receiving unit is used for receiving the server calling request sent by the enterprise server; the server calling request comprises an identifier of a target domain name resolution server to be switched; the server calling request is generated according to the identifier of the target domain name resolution server in the server switching request after the enterprise server receives the server switching request; the processing unit is used for determining a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script; and the execution unit is used for executing the script so as to switch the domain name to the target domain name resolution server.
From the above, it can be seen that: in the embodiment of the invention, the server switching request is received; the server switching request comprises an identifier of a target domain name resolution server to be switched; generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; sending the server calling request to a domain name resolution server; the domain name resolution server can determine a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script by calling the request, and after the script corresponding to the target domain name resolution server is determined, the script is executed to switch the domain name to the target domain name resolution server; therefore, the target domain name resolution server can be automatically switched, and operation and maintenance personnel do not need to log in the domain name resolution server to modify the configuration, so that the operation and maintenance cost is reduced.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, embodiments of 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, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), 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.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
Claims (12)
1. A method for switching a target domain name resolution server is characterized by comprising the following steps:
receiving a server switching request; the server switching request comprises an identifier of a target domain name resolution server to be switched; the server switching request is sent by a terminal provided with a third-party application;
generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched for a domain name, and the target domain name resolution server comprises a main server or a standby server;
if the target domain name resolution server is a master server, sending the server calling request to a master application slave platform deployed on the domain name resolution server through a master calling interface corresponding to the target domain name resolution server; if the target domain name resolution server is a standby server, sending the server calling request to a standby application slave platform deployed on the domain name resolution server through a standby calling interface corresponding to the target domain name resolution server; wherein the server invocation request is to: enabling the domain name resolution server to determine a script corresponding to the target domain name resolution server from at least one preset script according to a preset corresponding relation between the domain name resolution server and the script, and executing the script to switch the domain name to the target domain name resolution server;
receiving a switching response message from the domain name resolution server, wherein the switching response message comprises a message of successful switching or a message of failed switching;
broadcasting a message of successful switching, or sending a message of failed switching to a user initiating the switching request.
2. The method of claim 1, wherein the method further comprises:
determining a calling interface corresponding to the target domain name resolution server according to the identifier of the target domain name resolution server;
and sending the server calling request to a domain name resolution server through the calling interface.
3. The method according to claim 2, wherein if the target domain name resolution server is a main server, the calling interface corresponding to the target domain name resolution server is a main calling interface;
and if the target domain name resolution server is the standby server, the calling interface corresponding to the target domain name resolution server is the standby calling interface.
4. A method according to any one of claims 1 to 3, wherein the identification of the target domain name resolution server comprises: the type identification of the domain name, the type identification of the machine room where the target domain name resolution server is located, and the type identification of the target domain name resolution server.
5. The method of claim 4, wherein the server invocation request includes a handover type parameter, a domain name type parameter;
the generating a server call request according to the identifier of the target domain name resolution server includes:
determining the switching type parameter in the server calling request according to the type identifier of the machine room in which the target domain name resolution server is located in the identifier of the target domain name resolution server and the type identifier of the target domain name resolution server;
determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the identifier of the target domain name resolution server;
and generating the server calling request according to the switching type parameter and the domain name type parameter.
6. A method for switching a target domain name resolution server is characterized by comprising the following steps:
receiving a server calling request sent by an enterprise server through a master application slave platform deployed on a domain name resolution server or a standby application slave platform deployed on the domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; the server calling request is generated according to the identifier of the target domain name resolution server in the server switching request after the enterprise server receives the server switching request sent by the terminal provided with the third-party application;
determining a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script;
executing the script to switch the domain name to the target domain name resolution server;
sending a switching response message to the enterprise server, wherein the switching response message comprises a switching success message or a switching failure message; the switching response message is used for enabling the enterprise server to broadcast a message of successful switching or sending a message of failed switching to a user initiating the switching request.
7. A server, comprising:
a receiving unit, configured to receive a server switching request; the server switching request comprises an identifier of a target domain name resolution server to be switched for a domain name, and is sent by a terminal provided with a third-party application;
the processing unit is used for generating a server calling request according to the identifier of the target domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; the target domain name resolution server comprises a main server or a standby server;
a sending unit, configured to send the server call request to a master application slave platform deployed on a domain name resolution server through a master call interface corresponding to the target domain name resolution server if the target domain name resolution server is a master server; if the target domain name resolution server is a standby server, sending the server calling request to a standby application slave platform deployed on the domain name resolution server through a standby calling interface corresponding to the target domain name resolution server; wherein the server invocation request is to: enabling the domain name resolution server to determine a script corresponding to the target domain name resolution server from at least one preset script according to a preset corresponding relation between the domain name resolution server and the script, and executing the script to switch the domain name to the target domain name resolution server;
a receiving unit, configured to receive a handover response message from the domain name resolution server, where the handover response message includes a message of successful handover or a message of failed handover;
and the sending unit is also used for broadcasting a message of successful switching or sending a message of failed switching to the user initiating the switching request.
8. The server according to claim 7, wherein the processing unit is to: determining a calling interface corresponding to the target domain name resolution server according to the identifier of the target domain name resolution server;
the sending unit is configured to: and sending the server calling request to a domain name resolution server through the calling interface.
9. The server according to claim 8, wherein if the target domain name resolution server is a master server, the calling interface corresponding to the target domain name resolution server is a master calling interface; and if the target domain name resolution server is the standby server, the calling interface corresponding to the target domain name resolution server is the standby calling interface.
10. The server according to any of claims 7 to 9, wherein the identification of the target domain name resolution server comprises: the type identification of the domain name, the type identification of the machine room where the target domain name resolution server is located, and the type identification of the target domain name resolution server.
11. The server according to claim 10, wherein the server invocation request includes a handover type parameter, a domain name type parameter;
the processing unit is configured to:
determining the switching type parameter in the server calling request according to the type identifier of the machine room in which the target domain name resolution server is located in the identifier of the target domain name resolution server and the type identifier of the target domain name resolution server; determining the domain name type parameter in the server calling request according to the type identifier of the domain name in the identifier of the target domain name resolution server; and generating the server calling request according to the switching type parameter and the domain name type parameter.
12. A domain name resolution server, comprising:
the system comprises a receiving unit, a service processing unit and a processing unit, wherein the receiving unit is used for receiving a server calling request sent by an enterprise server through a master application slave platform deployed on a domain name resolution server or a standby application slave platform deployed on the domain name resolution server; the server calling request comprises an identifier of a target domain name resolution server to be switched; the server calling request is generated according to the identifier of the target domain name resolution server in the server switching request after the enterprise server receives the server switching request sent by the terminal provided with the third-party application;
the processing unit is used for determining a script corresponding to the target domain name resolution server from at least one preset script according to the corresponding relation between the preset domain name resolution server and the script;
an execution unit, configured to execute the script to switch the domain name to the target domain name resolution server;
a sending unit, configured to send a handover response message to the enterprise server, where the handover response message includes a message of successful handover or a message of failed handover; the switching response message is used for enabling the enterprise server to broadcast a message of successful switching or sending a message of failed switching to a user initiating the switching request.
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| CN109922101B (en) * | 2017-12-12 | 2023-08-15 | 三六零科技集团有限公司 | Method, device and server for realizing specific service in mobile terminal |
| CN109521971A (en) * | 2018-11-26 | 2019-03-26 | 广东小天才科技有限公司 | It is a kind of based on reading and writing data separation method and system across computer room |
| CN109245974B (en) * | 2018-11-30 | 2021-10-26 | 广东美的制冷设备有限公司 | Household appliance network distribution method and device and computer readable storage medium |
| CN111371911A (en) * | 2018-12-26 | 2020-07-03 | 北京奇虎科技有限公司 | Domain name resolution system and method |
| CN110336687B (en) * | 2019-05-09 | 2022-04-19 | 上海缤游网络科技有限公司 | Domain name switching method, device and system |
| CN114205220B (en) * | 2021-12-10 | 2024-04-05 | 北京百融睿博科技有限公司 | Multi-machine room fault transfer method and system based on abnormal counting of clients |
| CN114915610B (en) * | 2022-04-29 | 2024-04-19 | 北京字跳网络技术有限公司 | Method, device, electronic equipment and storage medium for sending network request |
| CN115333927B (en) * | 2022-07-29 | 2023-10-27 | 上海浦东发展银行股份有限公司 | Client domain name switching method and device, electronic equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145972A (en) * | 2007-10-16 | 2008-03-19 | 中兴通讯股份有限公司 | A disaster tolerance network management system and login method of network management clients |
| CN201584980U (en) * | 2010-03-03 | 2010-09-15 | 交通银行股份有限公司 | Data centre centralized control switching system |
| CN102739453A (en) * | 2012-07-03 | 2012-10-17 | 华为软件技术有限公司 | Master-standby switching method, device and system |
| US8355395B2 (en) * | 2009-10-20 | 2013-01-15 | At&T Intellectual Property I, L.P. | Controlling registration floods in VoIP networks via DNS |
| CN103248725A (en) * | 2013-05-23 | 2013-08-14 | 中国科学院计算机网络信息中心 | Safe and reliable domain name resolution repairing method and system |
| CN106533762A (en) * | 2016-11-17 | 2017-03-22 | 贵州白山云科技有限公司 | Device switching method and device switching device |
-
2017
- 2017-05-04 CN CN201710309353.3A patent/CN107204873B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101145972A (en) * | 2007-10-16 | 2008-03-19 | 中兴通讯股份有限公司 | A disaster tolerance network management system and login method of network management clients |
| US8355395B2 (en) * | 2009-10-20 | 2013-01-15 | At&T Intellectual Property I, L.P. | Controlling registration floods in VoIP networks via DNS |
| CN201584980U (en) * | 2010-03-03 | 2010-09-15 | 交通银行股份有限公司 | Data centre centralized control switching system |
| CN102739453A (en) * | 2012-07-03 | 2012-10-17 | 华为软件技术有限公司 | Master-standby switching method, device and system |
| CN103248725A (en) * | 2013-05-23 | 2013-08-14 | 中国科学院计算机网络信息中心 | Safe and reliable domain name resolution repairing method and system |
| CN106533762A (en) * | 2016-11-17 | 2017-03-22 | 贵州白山云科技有限公司 | Device switching method and device switching device |
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