CN110581873B - Cross-cluster redirection method and monitoring server - Google Patents

Abstract

An embodiment of the present invention provides a cross-cluster redirection method, comprising: if it is detected that a target resource is not cached in a first cluster, sending a resource retrieval instruction to each cluster in the cloud cache except the first cluster, to determine the target cluster including the target resource; send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through 302 redirection messages. The cross-cluster redirection method provided by the embodiment of the present invention can effectively reduce the resource loading time in the process of starting the monitoring process and reduce the memory resources of the monitoring server by performing cloud caching on the cluster and performing cross-cluster redirection in the cloud cache. consumption, and can effectively reduce the pressure on the business process and database of each cluster management server.

Description

A cross-cluster redirection method and monitoring server

technical field

Embodiments of the present invention relate to the technical field of Internet communications, and in particular, to a cross-cluster redirection method and a monitoring server.

Background technique

The cache cluster monitoring server monitors HTTP GET and HEAD requests in the link through bypass splitting. When the resource type requested by the user can be cached and the number of requests reaches the preset threshold, the monitoring server will notify the cluster management server and the cluster management server. Notify the specific cache server in the cluster to return the resource to the source, and then record the information such as the URL and file name of the resource in the mysql database of the management server. After the resource is updated, the management server will synchronize the resource records and other information to all monitoring servers in the cluster. When users access these existing resources in the cache, the monitoring server will send a 302 redirect message to guide the interrupted user to the cache to obtain it. resource.

In view of the large number of users on the existing network, the large scale of egress links, and the distribution of egress links in multiple computer rooms, the strategy of using different egress links to be served by a specific cache cluster is to increase the flexibility of system deployment and links Expansion flexibility. When multiple cache clusters coexist, the same resource requests for users in different regions may go through different provincial networks and third-party egress links, and then be monitored by monitoring servers in different clusters, resulting in multiple clusters returning from the public network multiple times. The source of the same resource will cause the repeated occupation of the egress bandwidth, thus affecting the cache gain ratio indicator.

Therefore, a cross-cluster redirection method is urgently needed to solve the above problems.

SUMMARY OF THE INVENTION

In order to solve the above problem, the embodiments of the present invention provide a cross-cluster redirection method and a monitoring server that overcome the above problem or at least partially solve the above problem.

Aspect 1 An embodiment of the present invention provides a cross-cluster redirection method, including: if it is detected that a target resource is not cached in a first cluster, sending resource retrieval to each cluster in the cloud cache except the first cluster instructions to determine a target cluster containing the target resource;

Send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through 302 redirection messages.

In the second aspect, the embodiment of the present invention further provides a monitoring server, including:

a determining module, configured to send a resource retrieval instruction to each cluster in the cloud cache except the first cluster if it is detected that the target resource is not cached in the first cluster, so as to determine the target cluster containing the target resource;

The redirection module is configured to send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through 302 redirection messages.

In a third aspect, an embodiment of the present invention provides a monitoring server device, including:

a processor, a memory, a communication interface, and a bus; wherein, the processor, memory, and communication interface communicate with each other through the bus; the memory stores program instructions that can be executed by the processor, and the processing The above-mentioned method for cross-cluster redirection can be executed by invoking the program instruction by the server.

Fourth aspect An embodiment of the present invention provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the above method.

The cross-cluster redirection method provided by the embodiment of the present invention can effectively reduce the resource loading time in the process of starting the monitoring process and reduce the memory resources of the monitoring server by performing cloud caching on the cluster and performing cross-cluster redirection in the cloud cache. consumption, and can effectively reduce the pressure on the business process and database of each cluster management server.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic flowchart of a cross-cluster redirection method provided by an embodiment of the present invention;

2 is a structural diagram of a monitoring server provided by an embodiment of the present invention;

FIG. 3 is a structural block diagram of a monitoring server device provided by an embodiment of the present invention.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are disclosed. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

At present, in the process of redirection in the prior art, there are mainly the following two problems:

1. Each cluster periodically calculates the hot-spot resources in the cluster. This way of calculating the hot-spot resources increases the resource overhead of the database and the load of the management process. The database of the cache cluster management server records information such as the size, creation time, recent service time, number of service connections, and service traffic of cached resource files. The number of records of these file resources usually reaches tens of millions.

2. After the process is restarted, the monitoring server not only loads the resources in this cluster, but also loads a large number of hot resources of other clusters, which puts forward higher requirements on the memory capacity of the monitoring server, and prolongs the resource loading time. Frequent updates of resource records to memory will affect the efficiency of redirection.

In view of the above problems, FIG. 1 is a schematic flowchart of a cross-cluster redirection method provided by an embodiment of the present invention, as shown in FIG. 1 , including:

110. If it is detected that the target resource is not cached in the first cluster, send a resource retrieval instruction to each cluster in the cloud cache except the first cluster to determine the target cluster containing the target resource;

120. Send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through 302 a redirection message.

It should be noted that the execution body of the embodiment of the present invention is a monitoring server in the first cluster. After the monitoring server receives the target resource retrieval request sent by the terminal and there is no target resource in the first cluster, the present invention needs to be used. The cross-cluster redirection scheme provided by the embodiment acquires target resources in other clusters.

It should also be noted that the cross-cluster redirection solution provided by the embodiment of the present invention is suitable for provinces where multiple clusters are deployed. Since each cluster is deployed in the same province, the number of routing hops through which equipment communication between computer rooms passes is small, and the network exits the computer room. There may be direct links between them, and the bandwidth and communication quality are guaranteed. The monitoring servers are all configured with public IP addresses, and servers between different clusters can access each other. The network delay is in the millisecond level, which provides the possibility of memory resource retrieval of monitoring servers between different clusters.

In step 110, the cloud cache is a set of cloud caches formed by all clusters including the first cluster, and the cloud cache can well solve the problem that the same resource is repeatedly returned to the source in multiple clusters. After each cluster enables the cloud cache sharing function, the management server of each cluster periodically calculates the hotspot resources in the cluster, and then periodically synchronizes these hotspot resources to other clusters. The monitoring server periodically loads the hotspot resources of other clusters. When the resources accessed by users are not cached in this cluster, but in the case that other clusters have been cached, the monitoring server will notify a cache server in this cluster to proxy the user's request to the server. Cache servers in other clusters fetch resources while keeping copies of files locally.

It should be noted that when the number of accesses to the specific resource in the cluster reaches the trigger threshold of the cloud cache, the resource will be recorded in the database of the cluster and become a locally cached resource.

In step 110, the resource retrieval is a process of retrieving which cluster can provide the target resource in other clusters when the target resource is not cached in the current cluster but the target resource is cached in other clusters. Through the resource retrieval, the optimal cluster that can provide the target resource can be determined from the multiple clusters included in the cloud cache, and the optimal cluster can be used as the target cluster.

Further, after the target cluster is determined in step 110, then in step 120, the IP address of the cache server and the storage of the target resource on the disk of the cache server corresponding to the target cluster may be determined according to the storage of the target resource in the determined target cluster. path, and then send the information to the terminal in the form of a 302 redirect message. Therefore, the terminal can directly obtain resources from the cache server of the target cluster.

The cross-cluster redirection method provided by the embodiment of the present invention can effectively reduce the resource loading time in the process of starting the monitoring process and reduce the memory resources of the monitoring server by performing cloud caching on the cluster and performing cross-cluster redirection in the cloud cache. consumption, and can effectively reduce the pressure on the business process and database of each cluster management server.

Based on the above embodiment, if it is detected that the target resource is not cached in the first cluster, a resource retrieval instruction is sent to each cluster in the cloud cache except the first cluster, so as to determine whether the target resource contains the target resource. The target cluster for the resource, including:

Loading the resource directory of the first cluster, and detecting whether the target resource is contained in the resource directory of the first cluster;

If the target resource is not detected in the resource directory of the first cluster, send a resource retrieval instruction to the monitoring server corresponding to each cluster except the first cluster in the cloud cache, so as to determine whether the target resource contains the target resource target monitoring server;

The target cluster is determined according to the determined target monitoring server.

It can be seen from the content of the above embodiment that the cross-cluster redirection method provided by the embodiment of the present invention can retrieve the content cached by other clusters in the cloud cache, determine the target cluster containing the target resource, and then guide the terminal through the 302 redirection message. Obtain target resources directly from the target cluster.

Among them, the specific determination process for the target cluster is as follows: only the resource records of this cluster, that is, the first cluster are loaded, and the resource records of other clusters in the cloud cache are no longer loaded. For the resources that have been cached, the monitoring server of the first cluster can perform resource retrieval on the monitoring servers of other clusters in real time, so as to determine the target monitoring server containing the target resource.

It can be understood that there is a corresponding relationship between the monitoring server and the cluster, so that after the target monitoring server is determined, the target cluster can also be determined accordingly.

On the basis of the above embodiment, the sending of resource retrieval instructions to the monitoring servers corresponding to each cluster except the first cluster in the cloud cache to determine the target monitoring server containing the target resource includes:

At the same time, send a resource retrieval instruction to the monitoring server corresponding to each cluster except the first cluster in the cloud cache, where the resource retrieval instruction is used to instruct the monitoring server to perform target resource retrieval in the memory of the monitoring server;

The first monitoring server that returns a retrieval response according to the resource retrieval instruction is used as the target monitoring server.

It can be known from the contents of the above embodiments that the embodiments of the present invention are resource retrieval performed in the monitoring server corresponding to the cluster. Specifically, the resource retrieval solution provided by the embodiment of the present invention is that the monitoring server of the first cluster simultaneously sends resource retrieval instructions to the monitoring servers of other clusters. The resource retrieval instruction can instruct the monitoring servers of other clusters to perform target resource retrieval in the memory of the monitoring server, instead of searching from the database of the cluster management server as in the prior art.

In addition, the method provided by the embodiment of the present invention adopts one-time batch issuance when sending resource retrieval instructions, which aims to shorten the number of resource retrievals, increase the number of single retrievals, and further improve resource retrieval performance.

It should be noted that because the cluster contains a large number of monitoring servers, data is loaded in memory, resource retrieval is fast, and resource retrieval is balanced to all monitoring servers. The solution for retrieving resources in the memory of the monitoring server provided by the embodiment of the present invention avoids the retrieval pressure from different cluster monitoring servers to the cluster management server database, and can also improve retrieval efficiency.

Further, after receiving the resource retrieval instruction, each monitoring server will detect whether the resource record contains the target resource, and if it contains the target resource, it needs to make a corresponding retrieval response reply, so as to inform the monitoring server of the first cluster. Then, since the sending process is sent to all clusters at the same time, but different clusters may respond at different speeds, considering the retrieval speed, the embodiment of the present invention preferentially replies the corresponding retrieval response to the first received retrieval response. The monitoring server is used as the target monitoring server, and the next retrieval response reply received will be discarded.

On the basis of the above embodiment, the first monitoring server that responds to the retrieval response according to the resource retrieval instruction as the target monitoring server, further includes:

If no information is received from any monitoring server that responds to the retrieval according to the resource retrieval instruction within the preset time period, the information that the resource request fails to be acquired is sent to the terminal.

It can be seen from the contents of the above-mentioned embodiments that the solution monitoring server provided by the embodiments of the present invention needs to reply to a retrieval response according to a resource retrieval instruction. Considering the timeliness of resource retrieval, in this embodiment of the present invention, when the monitoring server sends a resource retrieval instruction, a timer is started to count the time, and if no retrieval response reply from other cluster monitoring servers is received within a specified time, it is considered that the resource requested by the user is considered. There is no cache in all cache clusters. The monitoring server informs the management server of the user's request for the resource, and the management server records the access times of the resource uniformly.

On the basis of the above embodiment, each cluster in the cloud cache corresponds to one or more monitoring servers, and the resource records loaded by each monitoring server corresponding to each cluster are the same.

It should be noted that, in the embodiment of the present invention, each monitoring server is grouped in advance, and the grouping standard is performed according to the cluster, that is, all the monitoring servers in the same cluster are allocated to the same group.

Then, since the resource records loaded by all monitoring servers in the same cluster are completely consistent, the resource retrieval only needs to be performed in the memory of a specific monitoring server in each cluster. For example, in a cloud cache consisting of N clusters In the system, the monitoring server only needs to perform resource retrieval on N-1 monitoring servers, so as to minimize the resource retrieval overhead between different clusters.

As can be seen from the above content, when retrieving resources, each cluster corresponds to a specific monitoring server, so that the retrieval can be performed directly in the specific monitoring server. However, in order to avoid the problem of too many retrieval requests obtained on some monitoring servers and too few retrieval requests obtained by other monitoring servers, it is necessary to reasonably distribute the request load on each cluster monitoring server. Therefore, the embodiment of the present invention also provides a solution in which one cluster corresponds to multiple monitoring servers.

For ease of description, the embodiment of the present invention is described in a manner that one cluster corresponds to two monitoring servers, but the embodiment of the present invention does not specifically limit the corresponding number of clusters and monitoring servers.

In the embodiment of the present invention, one cluster corresponds to two monitoring servers, one of which is the primary server and the other is the secondary server. For example, the target servers for resource retrieval by monitoring server 1 of cluster 1 are monitoring server 1 and monitoring server 2 of cluster 2. Monitoring server 1 in cluster 2 is the primary server, and monitoring server 2 in cluster 2 is the standby server. If the server cannot provide the service, the service is provided by the alternate server. A TCP connection is established in advance between each monitoring server in the cluster 1 and the corresponding monitoring server in the cluster 2, and the connection is multiplexed, so that the resource retrieval speed can be effectively accelerated.

On the basis of the above embodiment, the method further includes:

When a cluster corresponds to multiple monitoring servers, for any cluster, if the sending of a resource retrieval command to the monitoring server corresponding to the cluster fails, the resource retrieval command will be sent to another cluster corresponding to the cluster through a preset redundant path. The monitoring server resends.

It can be known from the contents of the foregoing embodiments that the cluster provided by the embodiment of the present invention may correspond to one or more monitoring servers. And one of them is used as the primary server, and the other monitoring servers are used as secondary servers. Then, when sending the resource retrieval instruction to the primary server fails, a new primary server needs to be selected from the secondary servers to resend the resource retrieval instruction. Specifically, the embodiment of the present invention will be implemented by establishing a redundant path between the server and the sending end monitoring server.

On the basis of the above embodiment, the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster are sent to the terminal through 302 redirection messages, including :

Determine the cache server that stores the target resource based on the resource monitoring record of the target monitoring server corresponding to the target cluster;

Send the IP address information of the cache server and the storage path information on the disk of the cache server corresponding to the target cluster to the terminal through 302 redirection messages.

It can be known from the content of the above embodiments that the monitoring server of the first cluster provided by the embodiment of the present invention no longer loads the resource records of other clusters, but only loads the resource records of the first cluster. For resources that have not been cached in the first cluster but have been cached in other clusters, the monitoring server retrieves resources from other cluster monitoring servers in real time, sends a redirection message according to the retrieval results, and guides users to obtain the resources from the servers that own the resources in other clusters. resource. The guidance of user requests is no longer limited to the inside of the cluster, but extends to the various clusters that make up the cloud cache.

Then, according to the retrieval result on the target monitoring server, the server IP address information stored in the resource and the storage path of the resource on the disk can be integrated, and the above information is sent to the terminal in a 302 redirection message, wherein the 302 redirection message The IP address of the Location field points to the IP address of the cache server that owns the resource in other clusters, instead of the IP address of the first cluster cache server, so that cross-cluster redirection is implemented to guide users to obtain resources directly from the cache servers of other clusters.

FIG. 2 is a structural diagram of a monitoring server provided by an embodiment of the present invention. As shown in FIG. 2, the system includes: a determination module 210 and a redirection module 220, wherein:

The determining module 210 is configured to send a resource retrieval instruction to each cluster in the cloud cache except the first cluster if it is detected that the target resource is not cached in the first cluster, so as to determine the target cluster containing the target resource;

The redirection module 220 is configured to send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through 302 a redirection message.

Specifically, how to perform cross-cluster redirection by the determination module 210 and the redirection module 220 can be used to implement the technical solution of the cross-cluster redirection method embodiment shown in FIG.

The monitoring server provided by the embodiment of the present invention can effectively reduce the resource loading time in the process of starting the monitoring process and reduce the memory resource consumption of the monitoring server by performing cloud caching on the cluster and performing cross-cluster redirection in the cloud cache, and It can effectively reduce the pressure on the business process and database of each cluster management server.

An embodiment of the present invention provides a monitoring server device, comprising: at least one processor; and at least one memory communicatively connected to the processor, wherein:

FIG. 3 is a structural block diagram of a monitoring server device provided by an embodiment of the present invention. Referring to FIG. 3 , the monitoring server device includes: a processor (processor) 310, a communications interface (Communications Interface) 320, a memory (memory) 330, and a bus 340 , wherein the processor 310 , the communication interface 320 , and the memory 330 communicate with each other through the bus 340 . The processor 310 may call the logic instructions in the memory 330 to execute the following method: if it is detected that the target resource is not cached in the first cluster, send a resource retrieval instruction to each cluster in the cloud cache except the first cluster , to determine the target cluster containing the target resource; send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through a 302 redirect message .

An embodiment of the present invention discloses a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by a computer, The computer can execute the methods provided by the above method embodiments, for example, including: if it is detected that the target resource is not cached in the first cluster, sending a resource retrieval instruction to each cluster in the cloud cache except the first cluster, to determine the target cluster including the target resource; send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through 302 redirection messages.

Embodiments of the present invention provide a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the methods provided by the foregoing method embodiments, for example Including: if it is detected that the target resource is not cached in the first cluster, sending a resource retrieval instruction to each cluster in the cloud cache except the first cluster to determine the target cluster containing the target resource; The IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster are sent to the terminal through a 302 redirect message.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by program instructions related to hardware, the aforementioned program can be stored in a computer-readable storage medium, and when the program is executed, execute It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. a cross-cluster redirection method, is characterized in that, comprises: If it is detected that the target resource is not cached in the first cluster, sending a resource retrieval instruction to each cluster in the cloud cache except the first cluster to determine the target cluster containing the target resource; Send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through a 302 redirect message, so that the terminal can directly access the target cluster from the target cluster. Obtain the target resource from the corresponding cache server; If it is detected that the target resource is not cached in the first cluster, sending a resource retrieval instruction to each cluster in the cloud cache except the first cluster to determine the target cluster containing the target resource, including: Loading the resource directory of the first cluster, and detecting whether the target resource is contained in the resource directory of the first cluster; If the target resource is not detected in the resource directory of the first cluster, send a resource retrieval instruction to the monitoring server corresponding to each cluster except the first cluster in the cloud cache, so as to determine whether the target resource contains the target resource target monitoring server; Determine the target cluster according to the determined target monitoring server; In the cloud cache, each cluster corresponds to one or more monitoring servers, and the resource records loaded by each monitoring server corresponding to each cluster are the same; The method also includes: When a cluster corresponds to multiple monitoring servers, for any cluster, if the sending of a resource retrieval command to the monitoring server corresponding to the cluster fails, the resource retrieval command will be sent to another cluster corresponding to the cluster through a preset redundant path. The monitoring server resends. 2 . The method according to claim 1 , wherein the sending a resource retrieval instruction to the monitoring server corresponding to each cluster in the cloud cache except the first cluster, to determine the target monitoring including the target resource. 3 . server, including: At the same time, send a resource retrieval instruction to the monitoring server corresponding to each cluster except the first cluster in the cloud cache, where the resource retrieval instruction is used to instruct the monitoring server to perform target resource retrieval in the memory of the monitoring server; The first monitoring server that returns a retrieval response according to the resource retrieval instruction is used as the target monitoring server. 3. The method according to claim 2, characterized in that, using the first monitoring server that performs a retrieval response reply according to the resource retrieval instruction as the target monitoring server, further comprising: If no information is received from any monitoring server that responds to the retrieval according to the resource retrieval instruction within the preset time period, the information that the resource request fails to be acquired is sent to the terminal. 4. The method according to claim 1, wherein the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster are performed through 302 repetitions. Directed messages are sent to the terminal, including: Determine the cache server that stores the target resource based on the resource monitoring record of the target monitoring server corresponding to the target cluster; Send the IP address information of the cache server and the storage path information on the disk of the cache server corresponding to the target cluster to the terminal through 302 redirection messages. 5. A monitoring server, characterized in that, comprising: a determining module, configured to send a resource retrieval instruction to each cluster in the cloud cache except the first cluster if it is detected that the target resource is not cached in the first cluster, so as to determine the target cluster containing the target resource; The redirection module is used to send the IP address of the cache server corresponding to the target cluster and the storage path of the target resource on the disk of the cache server corresponding to the target cluster to the terminal through 302 redirection messages, so that the terminal Obtain the target resource directly from the cache server corresponding to the target cluster; The determining module is specifically used for: Loading the resource directory of the first cluster, and detecting whether the target resource is contained in the resource directory of the first cluster; If the target resource is not detected in the resource directory of the first cluster, send a resource retrieval instruction to the monitoring server corresponding to each cluster except the first cluster in the cloud cache, so as to determine whether the target resource contains the target resource target monitoring server; Determine the target cluster according to the determined target monitoring server; In the cloud cache, each cluster corresponds to one or more monitoring servers, and the resource records loaded by each monitoring server corresponding to each cluster are the same; When a cluster corresponds to multiple monitoring servers, for any cluster, if the sending of a resource retrieval command to the monitoring server corresponding to the cluster fails, the resource retrieval command will be sent to another cluster corresponding to the cluster through a preset redundant path. The monitoring server resends. 6. A monitoring server device, characterized in that it comprises a memory and a processor, and the processor and the memory communicate with each other through a bus; the memory stores program instructions that can be executed by the processor, The processor invokes the program instructions to be able to perform the method as claimed in any one of claims 1 to 4. 7 . A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, the computer instructions cause the computer to execute any one of claims 1 to 4 . Methods.

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