CN109660425B

CN109660425B - Monitoring method, determining method, monitoring equipment and storage medium

Info

Publication number: CN109660425B
Application number: CN201811524468.5A
Authority: CN
Inventors: 庄晓川; 陈鸿; 张志明
Original assignee: Wangsu Science and Technology Co Ltd
Current assignee: Wangsu Science and Technology Co Ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2021-05-18
Anticipated expiration: 2038-12-13
Also published as: CN109660425A

Abstract

The embodiment of the invention relates to the technical field of communication, and discloses a monitoring method, a determining method, monitoring equipment and a storage medium. In some embodiments of the present application, a method for monitoring a DNS server includes: acquiring indication information of a resolution result of the DNS; and determining the priority of the DNS according to the indication information of the resolution result of the DNS. The method for determining the domain name system DNS server for resolving the domain name comprises the following steps: determining the priority of each DNS server; and determining the DNS server for resolving the domain name according to the priority of each DNS server. In the implementation, the monitoring equipment acquires the indication information of the resolution result of the DNS, and determines the priority of the DNS according to the indication information, so that the DNS is monitored.

Description

Monitoring method, determining method, monitoring equipment and storage medium

Technical Field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a monitoring method, a determining method, a monitoring device, and a storage medium.

Background

Currently, most live broadcast service providers select a Content Delivery Network (CDN) or a cloud service provider to accelerate live broadcast. As the requirements of the terminal user on the live broadcast quality are continuously improved, the first screen becomes an important index concerned by many live broadcast service providers. At present, a plurality of layers of architectures exist in a CDN or a cloud service provider, and the plurality of layers of architectures are obtained through Domain Name System (DNS) resolution.

However, the inventors have found that conventional DNS resolution suffers from the following drawbacks: the current CDN has no special monitoring mechanism for the DNS server level, which causes a problem that the DNS server cannot be found in time, and further affects back-to-source or forward-to-push efficiency, resulting in poor user experience.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

Embodiments of the present invention provide a monitoring method, a determining method, a monitoring device, and a storage medium, which enable monitoring of a DNS server, so that an analysis speed and quality of a selected DNS server are better guaranteed, efficiency of source return or forwarding is guaranteed, and user experience is improved.

In order to solve the above technical problem, an embodiment of the present invention provides a monitoring method for a domain name system DNS server, including the following steps: acquiring indication information of a resolution result of the DNS; and determining the priority of the DNS according to the indication information of the resolution result of the DNS.

The embodiment of the invention also provides a method for determining a DNS server for resolving the domain name, which comprises the following steps: determining the priority of each DNS server; the priority of the DNS server is determined according to the indication information of the resolution result of the DNS server; and determining the DNS server for resolving the domain name according to the priority of each DNS server.

The embodiment of the present invention further provides a monitoring device for a DNS server, including: the domain name system DNS server monitoring method includes a first determining module and a second determining module, and the first determining module and the second determining module are coupled to execute the monitoring method of the domain name system DNS server mentioned in the above embodiment.

The embodiment of the invention also provides a device for determining the DNS server for resolving the domain name, which comprises the following steps: the third determining module and the fourth determining module are coupled to execute the method for determining the DNS server for resolving the domain name mentioned in the above embodiment.

An embodiment of the present invention further provides a monitoring device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the monitoring method of the domain name system DNS server as mentioned in the above embodiments.

An embodiment of the present invention further provides a monitoring device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the method of determining a domain name system, DNS, server for resolving domain names as set forth in the above embodiments.

The embodiment of the invention also provides a computer-readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the monitoring method of the domain name server DNS mentioned in the above embodiment.

Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which when executed by a processor implements the method for determining a domain name system DNS server for resolving a domain name mentioned in the above embodiments.

Compared with the prior art, the embodiment of the invention has the advantages that the monitoring equipment can acquire the indication information of the resolution result of the DNS, so that the monitoring equipment can evaluate the resolution capability of the DNS according to the acquired indication information of the resolution result of the DNS, and the monitoring on the resolution capability of the DNS is realized.

The information indicating the resolution result of the DNS server is information indicating the resolution result of the DNS server corresponding to the domain name, and the priority of the DNS server is the priority of the DNS server corresponding to the domain name. In the implementation, the priorities of the DNS servers corresponding to different domain names are evaluated according to the indication information of the resolution results of the DNS servers corresponding to the different domain names, so that the monitoring equipment can comprehensively know the resolution capability of the DNS servers to each domain name.

The instruction information is used to instruct any one of a time when the resolution is successful, an error in the resolution result, a resolution timeout, and an abnormality in the DNS server.

In addition, determining the priority of the DNS server according to the indication information of the resolution result of the DNS server specifically includes: if the indication information indicates that the DNS server is abnormal, marking the priority of the DNS server corresponding to the domain name as a fifth priority; if the indication information indicates that the resolution is overtime, marking the priority of the DNS server corresponding to the domain name as a fourth priority; if the indication information indicates that the resolution result is wrong, marking the priority of the DNS corresponding to the domain name as a third priority; if the determination indication information indicates the time of successful resolution and the time of successful resolution is greater than a first time threshold, marking the priority of the DNS server corresponding to the domain name as a second priority; if the determination indication information indicates the time of successful resolution and the time of successful resolution is not greater than the first time threshold, marking the priority of the DNS server corresponding to the domain name as a first priority.

In addition, after determining the priority of the DNS server according to the indication information of the resolution result of the DNS server, the monitoring method of the DNS server further includes: and after the time that the priority of the DNS server corresponding to the domain name is marked as the third priority or the fourth priority exceeds a second time threshold is determined, marking the priority of the DNS server corresponding to the domain name as the second priority. In the implementation, the priority of the DNS server with failed resolution or overtime resolution is regularly adjusted, so that the DNS server can be reused for resolving the domain name, and the resource waste caused by the fact that the DNS server is always reserved is avoided.

In addition, after determining the priority of the DNS server according to the indication information of the resolution result of the DNS server, the monitoring method of the DNS server further includes: after the time that the priority of the DNS server corresponding to the domain name is marked as the fifth priority exceeds a third time threshold is determined, detecting the state information of the DNS server; and if the state information of the DNS server indicates that the DNS server is normal, determining that the priority of the DNS server corresponding to the domain name is a second priority. In the implementation, the abnormal DNS server is detected periodically, so that the monitoring equipment can timely know that the abnormal DNS server is recovered to a normal state, and the recovered normal DNS server is reused for domain name resolution.

In addition, the priority of the DNS server is the priority of the DNS server corresponding to the domain name, and the priority of the DNS server corresponding to the domain name is determined based on the instruction information of the resolution result of the last resolution of the domain name by the DNS server. In the implementation, the DNS server used for analyzing the domain name is selected according to the priority of the DNS server corresponding to the domain name, so that the selected DNS server is more suitable for the domain name, and the analyzing efficiency is improved.

In addition, determining a DNS server for resolving a domain name according to the priority of each DNS server specifically includes: judging whether the priority of each DNS server corresponding to the domain name is the same; if yes, taking all DNS servers as DNS servers for analyzing the domain name; if not, selecting the DNS server with the highest priority as the DNS server for resolving the domain name, or selecting the DNS server with the highest priority and the DNS server with the second highest priority as the DNS servers for resolving the domain name.

In addition, after determining the DNS server for resolving the domain name according to the priority of each DNS server, the method of determining the DNS server for resolving the domain name further includes: step a: sending an analysis task to a DNS server for analyzing the domain name; the DNS server for analyzing the domain name analyzes the domain name and returns an analysis result; step b: receiving an analysis result returned by a DNS server for analyzing the domain name; step c: and determining the Internet protocol IP address corresponding to the domain name according to the resolution result returned by the DNS server for resolving the domain name. In the implementation, the resolution task is sent to all DNS servers for domain name resolution, so that the problem of failure in resolution caused by sudden failure of individual high-priority DNS servers is avoided, and the resolution efficiency of the domain name is further ensured.

In addition, determining an internet protocol IP address corresponding to the domain name according to an analysis result returned by the DNS server for analyzing the domain name specifically includes: in step c: according to the resolution result returned by the DNS server for resolving the domain name, before determining the Internet protocol IP address corresponding to the domain name, the method for determining the DNS server for resolving the domain name further comprises the following steps: step d: judging whether a correct resolution result exists in resolution results returned by a DNS (domain name server) for resolving the domain name; if yes, executing c; if yes, executing step e; step e: judging whether the number of times of analysis is greater than a preset number of times; wherein, the resolving times are the times of resolving the domain name; if yes, ending the analysis process; if not, returning to execute the step a.

In addition, before sending the resolution task to the DNS server for resolving the domain name, the method for determining the DNS server for resolving the domain name further includes: it is determined that a resolution thread of a DNS server for resolving a domain name has been initiated. In the implementation, the resolution thread of the DNS server is monitored, so that the problem that resolution failure is caused because the DNS server does not start the resolution thread is avoided, the resolution efficiency of the domain name is further influenced, and the accuracy of evaluating the priority of the DNS server is improved.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a flowchart of a monitoring method of a DNS server according to a first embodiment of the present invention;

fig. 2 is a flowchart of a monitoring method of a DNS server according to a second embodiment of the present invention;

fig. 3 is a flowchart of a method of determining a DNS server for resolving a domain name according to a third embodiment of the present invention;

fig. 4 is a flowchart of a method of determining a DNS server for resolving a domain name according to a fourth embodiment of the present invention;

fig. 5 is a flowchart of yet another method of determining a DNS server for resolving domain names according to the fourth embodiment of the present invention;

FIG. 6 is a functional schematic of a monitoring device of a fourth embodiment of the present invention;

fig. 7 is a schematic configuration diagram of a monitoring apparatus of a DNS server according to a fifth embodiment of the present invention;

fig. 8 is a schematic structural diagram of an apparatus for determining a DNS server for resolving a domain name according to a sixth embodiment of the present invention;

fig. 9 is a schematic configuration diagram of a monitoring apparatus of a seventh embodiment of the present invention;

fig. 10 is a schematic configuration diagram of a monitoring apparatus according to an eighth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

The first embodiment of the present invention relates to a monitoring method for a DNS server, which is applied to a monitoring device, where the monitoring device may be a monitoring device in a CDN system. As shown in fig. 1, the monitoring method of the DNS server includes:

step 101: and acquiring indication information of the resolution result of the DNS server.

Specifically, the monitoring device establishes communication connection with each DNS server, and can acquire a resolution result sent by the DNS server or indication information of the resolution result, thereby realizing monitoring of the DNS server.

It should be noted that, as can be understood by those skilled in the art, the indication information of the resolution result of the DNS server may be determined by the DNS server according to the resolution result of the DNS server itself, or may be determined by the monitoring device according to the resolution result of the DNS server.

It should be noted that, as can be understood by those skilled in the art, the indication information of the resolution result of the DNS server may be determined by the monitoring device according to the last resolution result of the DNS server, or may be determined by the monitoring device according to the resolution result of the DNS server within a period of time.

In a specific implementation, the indication information of the resolution result of the DNS server may be determined by the monitoring device according to the last resolution result of the DNS server. For example, in the case that the indication information is used to indicate any one of time when the resolution is successful, an error in the resolution result, timeout in the resolution, and an abnormality in the DNS server, when the monitoring device determines that the resolution result returned by the DNS server is correct, the monitoring device generates the indication information used to indicate the time when the resolution is successful according to the time when the DNS returns the resolution result. And when determining that the analysis result returned by the DNS server is wrong, the monitoring equipment generates indication information for indicating that the analysis result is wrong. The monitoring equipment determines that the DNS server does not return the analysis result within the preset timeout time, or the analysis result returned by the DNS server indicates that the analysis is overtime, and generates an analysis result used for indicating that the analysis is overtime. When the monitoring equipment determines that the communication between the monitoring equipment and the DNS server fails or the connection of the DNS server has read-write errors and other abnormalities, the monitoring equipment generates indication information for indicating the abnormality of the DNS server.

In another specific implementation, the indication information of the resolution result of the DNS server may be determined by the monitoring device according to the resolution result of the DNS server in a period of time. For example, if the monitoring device determines that the number of times that the resolution result of the DNS server in the first time period is correct is greater than a first threshold, it determines that the indication information indicates that the resolution accuracy of the DNS server is high, if it determines that the number of times that the resolution result of the DNS server in the first time period is correct is greater than a second threshold and is not greater than the first threshold, it determines that the indication information indicates that the resolution accuracy of the DNS server is low, and if it determines that the number of times that the resolution result of the DNS server in the first time period is correct is not greater than the second threshold, it determines that the indication information indicates that the resolution accuracy of the. And in the second time period, according to the DNS server of the DNS server in the first time period.

It should be noted that, in practical applications, different indication information may be generated for the resolution result of the DNS server according to the needs of the usage scenario, as will be understood by those skilled in the art. For example, the monitoring device generates indication information indicating that the resolution is successful when determining that the resolution result of the DNS server is correct, and generates indication information indicating that the resolution is failed when determining that the resolution of the DNS server is failed, such as various situations of resolution timeout, wrong resolution result, DNS server abnormality, and the like. The present embodiment does not limit the specific content of the instruction information.

Step 102: and determining the priority of the DNS according to the indication information of the resolution result of the DNS.

Specifically, the monitoring device monitors the DNS server, evaluates the resolution capability of the DNS server according to the instruction information of the resolution result of the DNS server obtained by monitoring, and prioritizes the DNS server according to the evaluation capability.

The following describes an example of a method for determining the priority of the DNS server with reference to the content of the instruction information.

In a specific implementation, the indication information is used to indicate any one of time of successful resolution, error of resolution result, resolution timeout, and DNS server exception. In this case, if the monitoring device determines that the indication information indicates that the DNS server is abnormal, the priority of the DNS server is marked as a fifth priority; if the indication information indicates that the resolution is overtime, marking the priority of the DNS as a fourth priority; if the indication information indicates that the analysis result is wrong, marking the priority of the DNS as a third priority; if the determination indication information indicates the time of successful analysis, and the time of successful analysis is greater than a first time threshold, marking the priority of the DNS server as a second priority; if the determination indication information indicates the time when the resolution is successful and the time when the resolution is successful is not greater than the first time threshold, marking the DNS server as a first priority.

In another specific implementation, the indication information is used to indicate that the parsing is successful or failed. In this case, if it is determined that the indication information indicates that the resolution is successful, the monitoring device marks the priority of the DNS server as a first priority, and if it is determined that the indication information indicates that the resolution is failed, the monitoring device marks the priority of the DNS server as a second priority. The case of failed parsing includes but is not limited to: wrong resolution result, resolution timeout and DNS server exception.

It should be noted that, as can be understood by those skilled in the art, according to different scenarios, the level of the DNS server may be respectively divided into a first priority and a second priority, or may be divided into a first priority, a second priority, a third priority, a fourth priority and a fifth priority, the dividing manner of the level of the DNS server may be set according to needs, and the condition that each level needs to meet may also be set according to specific needs, and the method for dividing the priority of the DNS server is not limited in this embodiment.

The above description is only for illustrative purposes and does not limit the technical aspects of the present invention.

Compared with the prior art, according to the monitoring method of the DNS server provided in the embodiment, the monitoring device can obtain the indication information of the resolution result of the DNS server, so that the monitoring device evaluates the resolution capability of the DNS server according to the obtained indication information of the resolution result of the DNS server, and monitoring of the resolution capability of the DNS server is achieved.

A second embodiment of the present invention relates to a method for monitoring a DNS server, and is substantially the same as the first embodiment, and mainly differs in that: in the first embodiment, the priority of the DNS server corresponding to the different domain name is not evaluated. In the second embodiment of the present invention, the priorities of the DNS servers corresponding to different domain names are evaluated, and other related steps are added. That is, in the second embodiment, the instruction information of the resolution result of the DNS server is the instruction information of the resolution result of the DNS server corresponding to the domain name, and the priority of the DNS server is the priority of the DNS server corresponding to the domain name.

For clarity, in this embodiment, a monitoring method of a DNS server is described by taking determination of a priority corresponding to the domain name a of the DNS server as an example. Specifically, as shown in fig. 2, the present embodiment includes the following steps:

step 201: and acquiring indication information of the resolution result of the DNS corresponding to the domain name A.

Specifically, the monitoring device monitors a resolution result of the DNS server corresponding to the domain name a, thereby obtaining indication information of the resolution result of the DNS server corresponding to the domain name a.

In a specific implementation, the indication information of the resolution result of the DNS server corresponding to the domain name a is the indication information of the resolution result of the DNS server that resolved the domain name a last time.

Step 202: and determining the priority of the DNS corresponding to the domain name A according to the indication information of the resolution result of the DNS corresponding to the domain name A.

Specifically, the indication information is used to indicate any one of time when the resolution is successful, an error in the resolution result, a resolution timeout, and an abnormality in the DNS server. If the monitoring equipment determines that the indication information indicates that the DNS server is abnormal, marking the priority of the DNS server corresponding to the domain name A as a fifth priority; if the indication information of the resolution result indicates that the resolution is overtime, marking the priority of the DNS corresponding to the domain name A as a fourth priority; if the indication information of the resolution result indicates that the resolution result is wrong, marking the priority of the DNS corresponding to the domain name A as a third priority; if the indication information of the resolution result indicates the time of successful resolution and the time of successful resolution is greater than a first time threshold, marking the priority of the DNS corresponding to the domain name A as a second priority; if the indication information of the indication information indicates the time of successful resolution and the time of successful resolution is not greater than the first time threshold, marking the priority of the DNS server corresponding to the domain name A as a first priority.

The DNS server exception condition includes, but is not limited to: the network of the DNS server is not communicated; read-write errors occur on DNS server connections, such as codes: connect/recvfrom/send fails. The case of the wrong parsing result includes but is not limited to: the resolution result returned by the DNS server does not include information such as an IP address.

Step 203: whether the priority of the DNS server corresponding to the domain name A is marked as a third priority or a fourth priority is judged.

Specifically, if the priority of the DNS server corresponding to the domain name a is marked as the third priority or the fourth priority, step 204 is performed, otherwise step 205 is performed.

It should be noted that, as can be understood by those skilled in the art, in practical applications, if it is not determined whether the priority level of the DNS server corresponding to the domain name a is marked as the fifth priority level, the process is ended after it is determined that the priority level of the DNS server corresponding to the domain name a is not marked as the third priority level or the fourth priority level.

Step 204: and after the time that the priority of the DNS server corresponding to the domain name A is marked as the third priority or the fourth priority exceeds a second time threshold is determined, marking the priority of the DNS server corresponding to the domain name A as the second priority. The flow is then ended.

In particular, the monitoring device employs a revival mechanism for low priority DNS servers. Namely, the DNS server with an incorrect resolution result or overtime resolution result is marked as a second priority periodically so that the DNS server can participate in subsequent domain name resolution, and then the priority of the DNS server is determined again according to the subsequent domain name resolution result.

Step 205: it is determined whether the priority of the DNS server corresponding to domain name a is marked as a fifth priority.

Specifically, if the priority of the DNS server corresponding to the domain name a is marked as the third priority or the fourth priority, step 206 is executed, otherwise, the process is ended.

Step 206: after the time that the priority of the DNS server corresponding to the domain name A is marked as the fifth priority exceeds a third time threshold is determined, detecting the state information of the DNS server; and if the state information of the DNS server indicates that the DNS server is normal, determining that the priority of the DNS server corresponding to the domain name A is a second priority.

Specifically, the monitoring device sends a data Packet to an abnormal DNS server periodically through an Internet Packet finder (Packet Internet Grope, PING) for the abnormal DNS server, determines whether the DNS server is normal if the data Packet returned by the DNS server is normal, marks the DNS server as the second priority if the DNS server is determined to be normal, adds the DNS server to the DNS server set of the second priority, and marks the DNS server as the fifth priority if the DNS server is not normal.

It should be noted that, as will be understood by those skilled in the art, in this embodiment, the monitoring method of the DNS server is described by taking any one of time when the indication information is used to indicate that the resolution is successful, an error in a resolution result, a resolution timeout, and an exception of the DNS server as an example, in practical applications, other implementation manners also exist, for example, when the indication information is used to indicate that the resolution is successful or failed, the monitoring device acquires the indication information of the resolution result of the DNS server corresponding to the domain name a, if it is determined that the indication information is used to indicate that the resolution is successful, it is determined that the priority of the DNS server corresponding to the domain name a is the first priority, and if it is determined that the indication information is used to indicate that the resolution is failed, it is determined that the priority of the DNS server corresponding to the domain name a is the second priority. And after the time that the priority of the DNS server corresponding to the domain name A is marked as the second priority exceeds a fourth time threshold value, marking the priority of the DNS server corresponding to the domain name A as the first priority.

As can be seen from the above, in practical applications, the indication information may also include other contents, and the specific contents of the indication information are not limited in this embodiment. In addition, when the content of the indication information changes, the embodiment obtained by adaptively adjusting step 203 and step 204 still belongs to the embodiment of the present invention, and also belongs to the protection scope of the present application.

It should be noted that, in this embodiment, for clarity of description, it is first determined whether the priority level of the DNS server corresponding to the domain name a is marked as the third priority level or the fourth priority level, and after it is determined that the priority level of the DNS server corresponding to the domain name a is not marked as the third priority level or the fourth priority level, it is then determined whether the priority level of the DNS server corresponding to the domain name a is marked as the fifth priority level. However, it can be understood by those skilled in the art that in practical application, it may also be determined whether the priority level of the DNS server corresponding to the domain name a is marked as the fifth priority level, and after determining that the priority level of the DNS server corresponding to the domain name a is marked as the fifth priority level, it is determined whether the priority level of the DNS server corresponding to the domain name a is marked as the third priority level or the fourth priority level, which is not limited in this embodiment.

It should be noted that step 203, step 204, step 205 and step 206 are not necessarily required to be performed, and related operations may be selectively performed, or step 203 and step 204 are performed, or step 205 and step 206 are performed.

As can be seen from the above, the monitoring device may obtain the priority of the DNS server corresponding to the other domain name by performing steps 201 to 204. If N DNS servers exist in the CDN system and M internal domain names exist, then N × M mapping relationships exist in the CDN system, and the monitoring device can obtain the priority of the DNS server in each mapping relationship through the monitoring method of the DNS server, that is, the priority of each DNS server corresponding to each domain name. Wherein N and M are positive integers.

It should be mentioned that the monitoring device monitors the indication information of the resolution results of the DNS server corresponding to different domain names, and creates priorities of the DNS server corresponding to different domain names, so that the monitoring device can comprehensively know the resolution capability of the DNS server for each domain name.

It is worth mentioning that after the second time threshold passes, the priority of the DNS server that fails to resolve or times out of resolution is adjusted, so that the DNS server can be reused for resolving the domain name, and resource waste caused by the DNS server being always set aside is avoided.

It should be noted that the abnormal DNS server is periodically checked, so that the monitoring device can timely know that the abnormal DNS server is recovered to be normal, and the DNS server recovered to be normal is reused for domain name resolution.

Compared with the prior art, according to the monitoring method for the DNS server provided in the embodiment, the monitoring device can obtain the indication information of the resolution result of the DNS server corresponding to the domain name, and for different domain names, different priorities are assigned to the DNS server, so that the monitoring device can more comprehensively know the resolution capability of the DNS server for each domain name. In addition, the monitoring device regularly adjusts the priority of the DNS server with failed resolution or overtime resolution, so that the DNS server can be reused for resolving the domain name, and resource waste caused by the fact that the DNS server is always reserved is avoided. The monitoring equipment detects the abnormal DNS regularly, so that the monitoring equipment can timely know that the abnormal DNS recovers to a normal state, and the DNS recovered to be normal is reused for domain name resolution.

The third embodiment of the invention relates to a method for determining a DNS server for resolving a domain name, which is applied to monitoring equipment. As shown in fig. 3, the method for resolving a DNS server for a domain name includes the steps of:

step 301: the priority of each DNS server is determined.

Specifically, the priority of the DNS server is determined based on the information indicating the resolution result of the DNS server. The priority of the DNS server may be the priority of the entire DNS server, that is, the priority for all domain names, or the priority of the DNS server corresponding to the domain name, and the priority of the DNS server corresponding to the domain name may be determined by the monitoring device according to the indication information of the resolution result of the last resolution of the domain name by the DNS server.

It is worth mentioning that the DNS server for resolving the domain name is selected according to the priority of the DNS server corresponding to the domain name, so that the selected DNS server is more suitable for the domain name, and the resolving efficiency is improved.

The method for determining the priority of the DNS server by the monitoring device according to the indication information of the resolution result of the DNS server is substantially the same as the monitoring method of the DNS server mentioned in the first embodiment and the second embodiment, and details are not described here, and a person skilled in the art may refer to the relevant content of the first embodiment and the second embodiment to execute step 301.

Step 302: and determining the DNS server for resolving the domain name according to the priority of each DNS server.

Specifically, after receiving the domain name resolution request, the monitoring device determines a DNS server for resolving the domain name according to the priority of each DNS server.

A method of specifying a DNS server for resolving a domain name will be described below, taking as an example the priority of the DNS server as the priority of the DNS server corresponding to the domain name.

The monitoring equipment judges whether the priority of each DNS server corresponding to the domain name is the same or not, and if yes, all DNS servers are used as DNS servers for analyzing the domain name. If not, selecting the DNS server with the highest priority as the DNS server for resolving the domain name, or selecting the DNS server with the highest priority and the DNS server with the second highest priority as the DNS servers for resolving the domain name.

Specifically, since the monitoring device does not have a monitoring result for the DNS server at the stage of being put into use at the beginning, priorities corresponding to different domain names of all the DNS servers cannot be obtained. In this case, in order to ensure the speed of resolving the domain name, all DNS servers are used as servers for resolving the domain name, and all DNS servers are called to resolve the domain name. After the monitoring equipment operates for a period of time and a monitoring result of the domain name resolution result of the DNS server exists in the monitoring equipment, only the DNS server with strong domain name resolution capability is started.

It should be noted that, as will be understood by those skilled in the art, due to different dividing manners of priorities of DNS servers or different requirements of DNS servers for resolving domain names, priorities of DNS servers selected for resolving domain names may be different, for example, DNS servers of first priority to third priority are selected as servers for resolving domain names, and this embodiment does not limit priorities of DNS servers for resolving domain names.

Compared with the prior art, in the method for determining the DNS server for resolving the domain name provided in the embodiment, since the priority of the DNS server is determined according to the resolution result of the DNS server, the priority of the DNS server can reflect the resolution capability of the DNS server. According to the priority of each DNS server, the DNS servers used for analyzing the domain names are screened, so that the analyzing capability of the DNS servers used for analyzing the domain names is guaranteed, the analyzing efficiency is guaranteed, and the source returning or forwarding efficiency is improved.

A fourth embodiment of the present invention relates to a method for determining a DNS server for resolving a domain name, and the present embodiment is a further improvement of the third embodiment, and the specific improvement is that: after step 302, other related steps are added.

Specifically, as shown in fig. 4, the present embodiment includes steps 4011 to 4015, wherein

steps

4011 and 4012 are substantially the same as

steps

301 and 302 in the third embodiment, respectively, and are not repeated here. The following mainly introduces the differences:

step 4011 and step 4012 are performed.

Step 4013: and sending a resolution task to a DNS server for resolving the domain name.

Specifically, the resolution task includes a domain name. And after receiving the resolution task, the DNS server for resolving the domain name resolves the domain name and returns a resolution result.

In a specific implementation, before sending an analysis task to a DNS server for analyzing a domain name, the monitoring device determines that an analysis thread of the DNS server for analyzing the domain name is started.

It is worth mentioning that the resolution task is sent to all DNS servers for resolving the domain name, so that the problem of failure in resolution due to sudden failure of individual high-priority DNS servers is avoided, and the resolution efficiency of the domain name is further ensured.

It is worth mentioning that the analysis thread of the DNS server is monitored, so that the analysis failure caused by the fact that the DNS server does not start the analysis thread is avoided, the analysis efficiency of the domain name is further influenced, and the accuracy of evaluating the priority of the DNS server is improved.

Step 4014: and receiving a resolution result returned by the DNS server for resolving the domain name.

Step 4015: and determining the IP address corresponding to the domain name according to the resolution result returned by the DNS server for resolving the domain name.

Specifically, when any one of the determined DNS servers for resolving the domain name returns a resolution result and the resolution result is correct, the monitoring device determines an IP address corresponding to the domain name according to the resolution result, and provides further services, such as back-sourcing or forwarding, according to the IP address.

In an embodiment, the monitoring device determines the correctness of the resolution result before determining the IP address corresponding to the domain name according to the resolution result returned by the DNS server for resolving the domain name. As shown in fig. 5, the method for determining, by a monitoring device, a DNS server for resolving a domain name includes steps 4021 to 4027, where step 4021, step 4022, step 4023, step 4024, and step 4026 are substantially the same as steps 4011 to 4015 in fig. 4, and are not repeated herein, and differences are mainly introduced below.

Steps 4021 to 4024 are performed.

Step 4025: and judging whether a correct resolution result exists in resolution results returned by the DNS server for resolving the domain name.

If the monitoring device determines that a correct resolution result exists in the resolution results returned by the DNS server for resolving the domain name, step 4026 is executed, and if the correct resolution result does not exist, step 4027 is executed.

Step 4026: and determining the IP address corresponding to the domain name according to the resolution result returned by the DNS server for resolving the domain name. The flow is then ended.

Step 4027: and judging whether the current analysis times are greater than the preset times. Wherein, the resolution times are the times of domain name resolution.

If the monitoring device determines that the current analysis times are greater than the preset times, the process is directly ended, and if the current analysis times are not greater than the preset times, the process returns to the step 4023.

It should be noted that, as will be understood by those skilled in the art, the resolution number refers to the number of times that a domain name in a domain name resolution request is resolved after the domain name resolution request is received, and in practical applications, the resolution number may be cleared after the resolution is finished, or the resolution number may be cleared after a next resolution request is received, so as to avoid a counting error caused by continuous accumulation of the resolution number.

In a specific implementation, in the resolution process, the monitoring device may time the time for the DNS server to resolve the domain name. And if the monitoring equipment receives a correct resolution result returned by the DNS server for resolving the domain name, clearing the timing. If the time exceeds the overtime time, but the resolution result returned by any DNS server for resolving the domain name is not received, the resolution of all the determined DNS servers for resolving the domain name is overtime, and the monitoring equipment reuses the DNS server for resolving the domain name to resolve the domain name. And in the re-analysis process, the monitoring equipment adjusts the overtime time according to the current analysis times. For example, if the current analysis number is not greater than the preset value, the timeout time in the current re-analysis process is the preset timeout time, and when the current analysis number is greater than the preset value, the timeout time in the current re-analysis process is equal to the preset timeout time + k × b, where k is equal to the current analysis number minus the preset value, and b is a positive integer.

It is worth mentioning that the timeout time is adjusted according to the retry number, so that repeated analysis failure caused by timeout in the retry process of the DNS server is avoided.

It should be noted that, as will be understood by those skilled in the art, the preset timeout period, the preset value and the value of k may be set as required, for example, in one embodiment, the preset timeout period is 1s, the preset value is 3, b is equal to 5, and the timeout period is 1+ k × 5.

Compared with the prior art, in the method for determining the DNS server for resolving the domain name according to the embodiment, since the priority of the DNS server is determined according to the resolution result of the DNS server, the priority of the DNS server can reflect the resolution capability of the DNS server. According to the priority of each DNS server, the DNS servers used for analyzing the domain names are screened, so that the analyzing capability of the DNS servers used for analyzing the domain names is guaranteed, the analyzing efficiency is guaranteed, and the source returning or forwarding efficiency is improved. In addition, the monitoring equipment sends the resolution tasks to all determined DNS servers for resolving the domain names, so that the problem of failure in resolution caused by sudden failure of individual DNS servers with high priority is avoided, and the resolution efficiency of the domain names is further ensured.

It should be noted that, as can be understood by those skilled in the art, in practical applications, the monitoring method of the DNS server and the method of determining the DNS server for resolving a domain name mentioned in the embodiments of the present invention may be used in cooperation with each other, in which case, a functional diagram of the monitoring device is shown in fig. 6.

The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.

A fifth embodiment of the present invention relates to a monitoring apparatus for a DNS server, as shown in fig. 7, including: the first determining module 501 and the second determining module 502, and the first determining module 501 and the second determining module 502 are coupled to execute the monitoring method of the domain name system DNS server according to the above embodiment.

Specifically, the first determining module 501 is configured to obtain indication information of a resolution result of the DNS server. The second determining module 502 determines the priority of the DNS server according to the indication information of the resolution result of the DNS server.

It should be understood that this embodiment is an example of the apparatus corresponding to the first and second embodiments, and may be implemented in cooperation with the first and second embodiments. The related technical details mentioned in the first embodiment and the second embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied to the first embodiment and the second embodiment.

A sixth embodiment of the present invention relates to an apparatus for determining a DNS server for resolving a domain name, as shown in fig. 8, including: the third determining module 601 and the fourth determining module 602, and the third determining module 601 and the fourth determining module 602 are coupled to execute the method for determining a DNS server for resolving a domain name according to the foregoing embodiments.

Specifically, the third determining module 601 is configured to determine a priority of each DNS server, where the priority of the DNS server is determined according to the indication information of the resolution result of the DNS server. The fourth determining module 602 is configured to determine a DNS server for resolving a domain name according to the priority of each DNS server.

It should be understood that this embodiment is an example of the apparatus corresponding to the third and fourth embodiments, and may be implemented in cooperation with the third and fourth embodiments. The related technical details mentioned in the third embodiment and the fourth embodiment are still valid in this embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related-art details mentioned in the present embodiment can also be applied in the third embodiment and the fourth embodiment.

It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.

A seventh embodiment of the present invention relates to a monitoring apparatus, as shown in fig. 9, including: at least one processor 701; and, a memory 702 communicatively coupled to the at least one processor 701; the memory 702 stores instructions executable by the at least one processor 701, and the instructions are executed by the at least one processor 701, so that the at least one processor 701 can execute the monitoring method of the domain name system DNS server according to the above embodiment.

An eighth embodiment of the present invention relates to a monitoring apparatus, as shown in fig. 10, including: at least one processor 801; and a memory 802 communicatively coupled to the at least one processor 801; the memory 802 stores instructions executable by the at least one processor 801, wherein the instructions are executable by the at least one processor 801 to enable the at least one processor 801 to perform the method of determining a domain name system DNS server for resolving domain names as mentioned in the above embodiments.

In fig. 9 and 10, the monitoring apparatus includes: one or more processors and memory, one processor being exemplified in fig. 9 and 10. The processor and the memory may be connected by a bus or other means, and the bus connection is exemplified in fig. 9 and 10. The memory, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The processor executes various functional applications and data processing of the device, i.e., implementing the above-described monitoring method of the DNS server or the method of determining a domain name system DNS server for resolving a domain name, by running a nonvolatile software program, instructions, and modules stored in the memory.

The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store a list of options, etc. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and these remote memories may be connected to the external device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

One or more modules are stored in the memory and, when executed by the one or more processors, perform the method of monitoring a DNS server or the method of determining a domain name system DNS server for resolving domain names in any of the method embodiments described above.

The product can execute the method provided by the embodiment of the application, has corresponding functional modules and beneficial effects of the execution method, and can refer to the method provided by the embodiment of the application without detailed technical details in the embodiment.

A ninth embodiment of the present invention relates to a computer-readable storage medium storing a computer program. The computer program realizes an embodiment of the above-described monitoring method of the DNS server when being executed by a processor.

A tenth embodiment of the present invention relates to a computer-readable storage medium storing a computer program. The computer program, when executed by a processor, implements an embodiment of the above-described method of determining a domain name system, DNS, server for resolving domain names.

That is, as can be understood by those skilled in the art, all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.

Claims

1. A monitoring method for a Domain Name System (DNS) server is characterized by comprising the following steps:

obtaining a mapping relation of N x M in a CDN system, wherein N and M are positive integers, N is used for representing the number of DNS servers, and M is used for representing the number of domain names;

acquiring indication information of a resolution result of the DNS based on each mapping relation;

determining the priority of the DNS according to the indication information of the resolution result of the DNS;

the indication information of the resolution result of the DNS server is the indication information of the resolution result of the DNS server corresponding to the domain name, and the priority of the DNS server is the priority of the DNS server corresponding to the domain name.

2. The monitoring method of a domain name system DNS server according to claim 1, wherein the indication information is used to indicate any one of time when resolution is successful, error in resolution result, resolution timeout, and DNS server abnormality.

3. The monitoring method of a domain name system DNS server according to claim 2, wherein the determining the priority of the DNS server according to the indication information of the resolution result of the DNS server specifically includes:

if the fact that the indication information indicates that the DNS server is abnormal is determined, marking the priority of the DNS server corresponding to the domain name as a fifth priority;

if the fact that the indication information indicates that the resolution is overtime is determined, marking the priority of the DNS server corresponding to the domain name as a fourth priority;

if the fact that the indicating information indicates that the resolution result is wrong is determined, marking the priority of the DNS server corresponding to the domain name as a third priority;

if the indicating information indicates the time of successful resolution and the time of successful resolution is greater than a first time threshold, marking the priority of the DNS server corresponding to the domain name as a second priority;

if the indication information indicates the time of successful resolution and the time of successful resolution is not greater than the first time threshold, marking the priority of the DNS server corresponding to the domain name as a first priority.

4. The method for monitoring a Domain Name System (DNS) server according to claim 3, wherein after the determining the priority of the DNS server according to the indication information of the resolution result of the DNS server, the method for monitoring a DNS server further comprises:

after the time that the priority of the DNS server corresponding to the domain name is marked as the third priority or the fourth priority exceeds a second time threshold is determined, the priority of the DNS server corresponding to the domain name is marked as the second priority.

5. The method for monitoring a Domain Name System (DNS) server according to claim 3, wherein after the determining the priority of the DNS server according to the indication information of the resolution result of the DNS server, the method for monitoring a DNS server further comprises:

after determining that the time that the priority of the DNS server corresponding to the domain name is marked as the fifth priority exceeds a third time threshold, detecting the state information of the DNS server;

and if the state information of the DNS server indicates that the DNS server is normal, determining that the priority of the DNS server corresponding to the domain name is a second priority.

6. A method of determining a domain name system, DNS, server for resolving a domain name, comprising:

determining the priority of each DNS server; the priority of the DNS server is determined according to the indication information of the resolution result of the DNS server;

determining DNS servers for analyzing domain names according to the priority of each DNS server;

the priority of the DNS server is the priority of the DNS server corresponding to the domain name, and the priority of the DNS server corresponding to the domain name is determined according to the indication information of the last resolution result of the domain name.

7. The method according to claim 6, wherein the determining the DNS server for resolving the domain name according to the priority of each DNS server specifically includes:

judging whether the priority of each DNS server corresponding to the domain name is the same;

if yes, taking all DNS servers as the DNS servers for analyzing the domain name;

if not, selecting the DNS server with the highest priority as the DNS server for resolving the domain name, or selecting the DNS server with the highest priority and the DNS server with the second highest priority as the DNS server for resolving the domain name.

8. The method for determining a DNS server for a domain name system according to any one of claims 6 to 7, wherein after determining the DNS server for resolving the domain name according to the priority of each DNS server, the method for determining the DNS server for resolving the domain name further comprises:

step a: sending an analysis task to the DNS server for analyzing the domain name; the DNS server for analyzing the domain name analyzes the domain name and returns an analysis result;

step b: receiving an analysis result returned by the DNS server for analyzing the domain name;

step c: and determining the Internet protocol IP address corresponding to the domain name according to the resolution result returned by the DNS server for resolving the domain name.

9. The method of determining a domain name system, DNS, server for resolving domain names according to claim 8, wherein in step c: before determining the internet protocol IP address corresponding to the domain name according to the resolution result returned by the DNS server for resolving the domain name, the method for determining the DNS server for resolving the domain name further includes:

step d: judging whether a correct resolution result exists in the resolution results returned by the DNS server for resolving the domain name;

if yes, executing c;

if yes, executing step e;

step e: judging whether the current analysis times are greater than the preset times or not; wherein the resolution times are the times of resolving the domain name;

if yes, ending the analysis process;

if not, returning to execute the step a.

10. The method of determining a domain name system, DNS, server for resolving a domain name according to claim 8, wherein prior to said sending a resolution task to said DNS server for resolving a domain name, said method of determining a DNS server for resolving a domain name further comprises:

determining that a resolution thread of the DNS server for resolving the domain name is started.

11. A monitoring device, comprising: at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of monitoring of a domain name system, DNS, server according to any of claims 1 to 5.

12. A monitoring device, comprising: at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a method of determining a domain name system, DNS, server for resolving domain names according to any of claims 6 to 10.

13. A computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the monitoring method of a domain name system DNS server according to any one of claims 1 to 5.

14. A computer-readable storage medium, storing a computer program, wherein the computer program, when executed by a processor, implements the method of determining a domain name system, DNS, server for resolving domain names according to any of claims 6 to 10.