CN115292048A - Server capacity expansion and reduction method, device, equipment and storage medium - Google Patents

Abstract

The present disclosure relates to a method, device, device and storage medium for expanding or shrinking server capacity. The method includes: acquiring the number of first users currently accessing a server cluster; and comparing the number of first users with a preset number threshold to obtain Comparison result; according to the comparison result, update the number of servers in the server cluster that respond to the target service. In the embodiment of the present disclosure, by acquiring the number of users accessing the server cluster and comparing the number of users with a preset number threshold, the expansion and contraction of the server can be realized, without acquiring the performance parameters of the server, and without manual operation, which is simple and fast. Easy to implement.

Description

Server expansion and contraction method, device, equipment and storage medium

technical field

The present disclosure relates to the field of computer technology, and in particular to a server scaling method, device, equipment and storage medium.

Background technique

In the distributed server cluster service, as the cluster access pressure increases, the server cluster needs to be expanded; when the access pressure decreases, the server cluster needs to be reduced.

The currently commonly used server expansion and contraction method is usually: obtain the performance parameters of each server, such as: CPU usage rate, disk utilization rate, etc., and perform expansion and contraction according to the performance parameters of each server and the parameter threshold of the server. During the use of the server, due to various reasons such as permission settings, the user failed to read various performance parameters of the server. At this time, the expansion and contraction of the server can only be realized through manual operation.

However, due to the large time delay of manual operation, it is more difficult to achieve real-time and rapid expansion and contraction.

Contents of the invention

In order to solve the above-mentioned technical problems, the embodiments of the present disclosure provide a method, device, device, and storage medium for server expansion and contraction, which can still achieve real-time and rapid capacity expansion when various performance parameters of the server cannot be read with shrinkage.

In a first aspect, an embodiment of the present disclosure provides a method for scaling a server, including:

Obtain the number of first users who are currently accessing the server cluster;

Comparing the first number of users with a preset number threshold to obtain a comparison result;

Updating the server responding to the target service in the server cluster according to the comparison result.

In a second aspect, an embodiment of the present disclosure provides a server expansion and contraction device, including:

The first user number acquisition module is used to acquire the first number of users who are currently accessing the server cluster;

A user number comparison module, configured to compare the first number of users with a preset number threshold to obtain a comparison result;

The server update module is configured to update the server in the server cluster that responds to the target service according to the comparison result.

In a third aspect, an embodiment of the present disclosure provides an electronic device, including:

one or more processors;

storage means for storing one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors are made to implement the server scaling method according to any one of the first aspect above.

In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the server expansion and contraction method described in any one of the above-mentioned first aspects is implemented.

In a fifth aspect, an embodiment of the present disclosure provides a computer program product, the computer program product includes a computer program or an instruction, and when the computer program or instruction is executed by a processor, the server extension described in any one of the above first aspects is implemented. shrink method.

The server expansion and contraction method, device, equipment, storage medium and program product provided by the embodiments of the present disclosure can realize the expansion and contraction of the server by obtaining the number of users who are accessing the server cluster and comparing the number of users with the preset number threshold , there is no need to obtain the performance parameters of the server, and no manual operation is required, which is simple, fast, and easy to implement.

Description of drawings

The above and other features, advantages and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and that elements and elements are not necessarily drawn to scale.

FIG. 1 is a schematic flowchart of a method for expanding and contracting a server in an embodiment of the present disclosure;

FIG. 2 is a schematic flowchart of a method for expanding and contracting a server in an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of server expansion in an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of using a container to start an application in an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a server expansion and contraction device in an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an electronic device in an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein; A more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for exemplary purposes only, and are not intended to limit the protection scope of the present disclosure.

It should be understood that the various steps described in the method implementations of the present disclosure may be executed in different orders, and/or executed in parallel. Additionally, method embodiments may include additional steps and/or omit performing illustrated steps. The scope of the present disclosure is not limited in this regard.

As used herein, the term "comprise" and its variations are open-ended, ie "including but not limited to". The term "based on" is "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one further embodiment"; the term "some embodiments" means "at least some embodiments." Relevant definitions of other terms will be given in the description below.

It should be noted that concepts such as "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the sequence of functions performed by these devices, modules or units or interdependence.

It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more" multiple".

The names of messages or information exchanged between multiple devices in the embodiments of the present disclosure are used for illustrative purposes only, and are not used to limit the scope of these messages or information.

Currently, the commonly used server expansion and contraction methods are usually to obtain the performance parameters of each server, such as: CPU usage rate, disk utilization rate, etc., and perform expansion and contraction according to the performance parameters of each server and the parameter threshold of the server. During the use of the server, due to various reasons such as permission settings, users may not be able to read various performance parameters of the server. At this time, the expansion and contraction of the server can only be realized through manual operation. However, due to the large time delay of manual operation, it is more difficult to achieve real-time and rapid expansion and contraction.

The server expansion and contraction method, device, equipment and storage medium provided in the embodiments of the present disclosure can realize the expansion and contraction of the server by obtaining the number of users who are accessing the server cluster and comparing the number of users with the set threshold without obtaining The performance parameters of the server do not require manual operation, are simple, fast, and easy to implement. The server expansion and contraction method provided by the embodiments of the present disclosure can be applied to scenarios where the number of users is not fixed and cannot be expanded in advance, such as the expansion and contraction of the Quanzhen Online Classroom server.

The concepts that may be involved in the embodiments of the present disclosure are briefly introduced below.

A server cluster (Cluster) is a loosely coupled collection of computing nodes composed of two or more node servers, providing users with a single customer view of network services or applications (including databases, Web services, and file services, etc.), while Provides fault recovery capabilities close to fault-tolerant machines.

A server cluster system generally interconnects two or more node servers through corresponding hardware and software, and each cluster node is an independent server running its own process. These processes can communicate with each other and appear to network clients as a single system, working together to provide applications, system resources, and data to users. In addition to serving as a single system, server cluster systems also have the ability to recover from server-level failures. The server cluster system can also increase the processing capacity of the server internally by continuing to add servers in the cluster, and provide inherent reliability and availability through system-level redundancy.

Container (Docker) is an engine for building, distributing, and running container images. Based on Docker, developers and administrators can use containers to develop, deploy, and run applications. Docker generally includes a Docker client (Docker Client) and a Docker engine (Docke Engine). Docker is a daemon process that manages images and containers running on the host.

A container image is an executable package that contains everything needed to run an application, such as: the program's code, libraries, environment variables, and configuration files. The container image can run in any environment with the Docker engine installed. When the container image is running, it will be created as a Docker container.

Specifically, the content of a container image usually includes a metadata file, a configuration file, and at least one image layer file. The metadata file can be a manifest.json file, which records the metadata of all image layer files; the configuration file is used to record the memory occupied by the image. The size, the type of instructions contained in the image, etc.; the image layer file can be a layer file.

The server expansion and contraction method proposed in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a flow chart of a method for expanding or shrinking a server in an embodiment of the present disclosure. This embodiment is applicable to the situation of expanding or shrinking a server. The method can be executed by a server expanding and shrinking device. The capacity shrinking device can be realized by means of software and/or hardware, and the server scaling device can be configured in electronic equipment.

As shown in FIG. 1 , the server expansion and contraction method provided by the embodiment of the present disclosure mainly includes steps S101-S103.

S101. Obtain the number of first users who are currently accessing the server cluster.

Wherein, the first number of users may be understood as the number of all users currently accessing the server cluster, and may also be referred to as the user access volume of the server cluster.

In an embodiment of the present disclosure, acquiring the number of first users who are currently accessing the server cluster includes: acquiring in real time the access request sent by the client received by the server cluster, and if the server responds to the access request, the client successfully accesses the server cluster In the server cluster, add one to the number of first users as the new number of first users.

In an embodiment of the present disclosure, obtaining the first number of users who are currently accessing the server cluster may also include: monitoring the connection relationship between the client and the server in real time, and detecting that the connection between the client and the server is broken After opening, subtract one from the number of first users as the new number of first users.

Wherein, disconnecting the connection between the client and the server may include: disconnecting the connection with the client when the server cluster receives a connection disconnection request sent by the client. It may also include: the client periodically sends a heartbeat message to the server cluster, and if the server cluster does not receive the heartbeat message within a cycle, it is determined that the connection between the client and the server is disconnected.

In one embodiment of the present disclosure, obtaining the first number of users who are currently accessing the server cluster may include: if the server cluster includes a function of counting user visits, a user visits acquisition request may be sent to the server cluster, and the server After responding to the request for obtaining user visits, return the number of first users who are accessing the server cluster.

It should be noted that, in the embodiment of the present disclosure, only a brief description of the method of obtaining the number of first users who are accessing the server cluster is given without limitation. within range.

S102. Compare the first number of users with a preset number threshold to obtain a comparison result.

Wherein, the preset quantity threshold can be understood as a numerical value used to characterize the magnitude of server access pressure. The preset quantity threshold may be a numerical value, or may be multiple numerical values, which are not specifically limited in this embodiment of the present disclosure.

In one embodiment of the present disclosure, the preset quantity threshold includes a first quantity threshold and a second quantity threshold, wherein the first quantity threshold is greater than the second quantity threshold. The first number threshold can be understood as a value used to represent excessive server access pressure, and the second number threshold can be understood as a value used to represent too low server access pressure. At this time, the comparison result may include: the first number of users is greater than or equal to the first number threshold, or, the first number of users is less than or equal to the second number threshold, or, the first number of users is greater than the second number threshold and smaller than the first number threshold.

In an embodiment of the present disclosure, the above preset quantity threshold may be dynamically set according to actual conditions or historical experience. For example: for a server cluster that provides online learning services for primary and secondary school students, since the number of primary and secondary school students studying online during the day is large, the first number threshold can be set smaller, so that the response target in the server cluster can be increased in advance The server of the service can avoid the influx of a large number of users in a short period of time, resulting in the paralysis of the server cluster. Since there are fewer primary and middle school students studying online at night, especially in the middle of the night, the first number threshold can be set larger. In this way, resource waste caused by adding more servers in advance can be avoided.

Further, the number of historical visiting users corresponding to each course may be obtained, and the first number threshold is set for the number of historical visiting users corresponding to each course. For example: 100,000 historically visited users for mathematics courses, and 10,000 historically visited users for biology courses. Some time before the start of the mathematics course, or after the start of the mathematics course, the first quantity threshold can be set smaller, so that the servers in the server cluster that respond to the target service can be increased in advance. Some time before the start of the biology course, or after the start of the biology course, set the first quantity threshold to be larger, so that the waste of resources caused by adding more servers in advance can be avoided. In addition, the preset quantity threshold can also be set according to the students' evaluation of the lecturer and the popularity of the lecturer. For example: for the course time period corresponding to the teacher with high popularity, the first quantity threshold can be set smaller; for the course time period corresponding to the teacher with low popularity, the first quantity threshold can be set Set larger.

In an embodiment of the present disclosure, the first quantity threshold may be set according to the usage habits and historical experience of the customer group provided by the server cluster. The specific setting method will not be described in detail in the embodiments of the present disclosure.

S103. According to the comparison result, update the number of servers in the server cluster that respond to the target service.

In one embodiment of the present disclosure, when the comparison result is that the number of first users is greater than or equal to a first number threshold, the number of servers responding to the target service in the server cluster is increased. When the comparison result is that the number of first users is less than or equal to a second number threshold, reduce the number of servers in the server cluster that respond to the target service, where the second number is smaller than the first number threshold.

In one embodiment of the present disclosure, when the comparison result is that the number of first users is greater than or equal to the first number threshold, the number of servers responding to the target service in the server cluster is increased, so that the number of servers responding to the target service in the server cluster is increased in advance. The number of servers can avoid the influx of a large number of users in a short period of time, causing the server cluster to be paralyzed.

In one embodiment of the present disclosure, when the comparison result is that the first number of users is less than the second number threshold, reduce the number of servers in the server cluster that respond to the target service, so as to prevent too many servers from providing services for a small number of clients. services, resulting in waste of resources. When the comparison result is that the first number of users is greater than the second number threshold and smaller than the first number threshold, keep the number of servers in the server cluster that respond to the target service unchanged.

In the prior art, most of the game server clusters or shopping server clusters adopt the advance expansion scheme, which is to expand the capacity before the server cluster provides the target service. For example: a period of time before a game competition, the game server cluster is expanded in advance, or a shopping server cluster is expanded in advance of a shopping promotion.

The above-mentioned pre-expansion scheme provides services after the expansion is completed, but in the process of server clusters providing services, server expansion will not be possible. Once the number of users is too large, it will directly lead to slow client access and even server cluster paralysis. The server expansion and contraction method provided in the embodiment of the present disclosure can adjust the number of servers providing the target service in real time according to the number of users accessing the server cluster during the period when the server cluster provides the target service, so as to realize the expansion and contraction of the server and avoid the number of users The server cluster caused by too many is paralyzed.

In an embodiment of the present disclosure, the above-mentioned server expansion and contraction method is further optimized. As shown in FIG. 2 , the optimized server expansion and contraction method mainly includes steps S201-S208.

S201. Obtain the number of first users who are currently accessing the server cluster.

The execution process of step S201 in the embodiment of the present disclosure is the same as that of step S101 in the above-mentioned embodiment. For specific description, refer to the description in the above-mentioned embodiment, and details will not be repeated in the embodiment of the present disclosure.

S202. Compare the first number of users with a first number threshold.

In the embodiment of the present disclosure, the first number of users is compared with the first number threshold, and the magnitudes of the two numbers are compared. The method of numerical comparison is not specifically limited in the embodiments of the present disclosure.

S203. In response to the first number of users being greater than or equal to the first number threshold, increase the number of servers in the server cluster that respond to the target service and use the updated server cluster to execute the target service.

Wherein, the first quantity threshold is a numerical value representing excessive access pressure of the server cluster. Wherein, the first quantity threshold may be set according to actual conditions. In other words, if the first number of users is greater than the first number threshold, that is, the number of users currently accessing the server cluster is greater than the first number threshold, it indicates that the number of users currently accessing the server cluster is too large, and the access pressure of the server cluster is too high. At this time, it is necessary to increase the number of servers responding to the target service.

Further, the first quantity threshold is determined by the total user visits when the server cluster is fully loaded. For example: when the server cluster is fully loaded, the number of users that can be received is 100. When the actual number of users reaches 70% of the full load, it indicates that the access pressure of the server cluster is too high. At this time, the first number threshold is 70.

Wherein, responding to the target service may be understood as the target service provided by the server cluster. Increasing the number of servers responding to the target service in the server cluster may refer to that when the server cluster receives a new user access request, the client corresponding to the user is connected to the newly added server, so that the newly added server is a client Provide targeted services.

As shown in Figure 3, originally there are two servers (server A and server B) in the server cluster 31 to be used for responding to the target service, when the first number of users increases greater than the first number threshold, the increase in the number of visits is not avoided and the server crash, add a new server (server C) in the server cluster 31, the new server (server C) and the original two servers (server A and server B) in the server cluster jointly respond to the target service.

In one embodiment of the present disclosure, the increasing the number of servers in the server cluster that respond to the target service and using the updated server cluster to execute the target service includes: determining the idle server in the server cluster as Adding a new server; generating a server start command; starting the new server based on the server start command; using container technology to start a target application in the new server; using the server cluster including the new server to execute the target service.

In the embodiments of the present disclosure, an idle server refers to any server in the server cluster that does not respond to the target service. The server may be in a closed state and not respond to any service, or it may be responding to other services with a lower priority than the target service. Priority services, for example: servers that are responding to file management, or program management. Wherein, the newly added server refers to a server that is about to start and install the target application program to respond to the target service. The server start command refers to a command used to control the start of the newly added server.

In one embodiment of the present disclosure, in response to determining that the server in the idle state is a newly added server, a server start instruction is generated.

In an embodiment of the present disclosure, the newly added server is automatically started in response to the server start instruction. Wherein, opening the newly added server at least includes: turning on the power, loading the input and output system of the newly added server, reading the master boot record (MBR, Master Boot Record) of the newly added server, loading the kernel of the newly added server, etc. .

Among them, container technology is a lightweight virtualization technology, a lightweight, portable, and self-contained software packaging technology that enables applications to run in the same way almost anywhere. Using container technology to start a target application program can be understood as using container technology to start and run the target application program on a newly added server.

Wherein, using the container technology to start the target application program in the added server, the server needs to be pre-installed with a container cluster management tool and a Docker tool. When the server code needs to be deployed, first start the container cluster management tool, such as Kubernetes, and the server receives the start command of the container cluster management tool used to manage the Docker container, and the start command responds to the operation of starting the new server Obtain.

Among them, Docker is an application container engine. Through Docker, the application program and the dependent packages of the application program can be assembled into a portable container. Docker consists of a mirror (Image in English), a container (Container in English), and a warehouse (Container in English). It is composed of three cores of Repository).

Wherein, the target service refers to the service currently being provided by the server cluster, such as online classroom and so on.

In the embodiment of the present disclosure, the containerization technology is used to expand the server capacity, which can realize the automatic expansion of the server cluster, avoid manual expansion, and improve the expansion efficiency.

In an embodiment of the present disclosure, using container technology to start the target application program in the added server includes: creating a first container and a second container in the added server; using the first container downloading the module file required by the target application program, and storing the module file in a local disk; using the second container to download the main program file required by the target application program; The module file is obtained from the local disk; and the target application program is started based on the main program file and the module file.

Wherein, the module file may refer to the mod file in the target application program. Taking the Quanzhen course module as an example, the Quanzhen course module is to combine the virtual teaching aids, virtual tables and chairs, and virtual characters that may exist in the Quanzhen course. , such as: virtual teacher, virtual student, etc. of.

Using the second container to download the main program file required by the target application includes: using the second container to pull the main program image. Wherein, the image is manually created or obtained from a mirror warehouse, and the main program image is created on the Dockerfile. In one embodiment, the step of pulling the main program image includes: receiving and creating the main program image; or obtaining the main program image from a mirror repository. Specifically, the image, which is Image in English, is static and is a mapping of files shared with each other in the container, but it cannot be manipulated. Build an Image, that is, build a mirror image. The main program image is a read-only template for the container runtime, and each image is composed of a series of layers (layers).

Wherein, the data volume synchronization method refers to a method for synchronizing data among multiple containers. Specifically, the first container is mounted to a certain directory on the second container through the command volumes-from. At this time, the data synchronization between the two containers is realized, and the second container is the data volume container.

Starting the target application program based on the main program file and the module file may be understood as: the container runs the target application program based on the main program file and the module file.

Specifically, as shown in Figure 4, the module file is downloaded through the first container, the image file of the main program is pulled through the second container, and then the second container obtains the module file through data volume synchronization, and based on the image file and The mod file launches the target application.

In the prior art, the module file is stored in the image file, that is, the image file includes both the main program file and the module file, which will cause the size of the image file to be large. When the image file is pulled through a container, the Under the same network speed, the acquisition speed of the image file will be reduced and the time for pulling the image file will be increased. In the embodiment of the present disclosure, the module file is downloaded through the first container, and the main program file is pulled through the second container, that is, two different containers obtain the module file and the main program file respectively, which can speed up the file acquisition speed and reduce The duration of pulling the image file.

S204. Compare the first number of users with a second number threshold.

In the embodiment of the present disclosure, the manner of comparing the first number of users with the second number threshold is not specifically limited in the embodiment of the present disclosure.

S205. Responding that the first number of users is less than or equal to the second number threshold, reduce the number of servers in the server cluster that respond to the target service and use the updated server cluster to execute the target service, wherein the second number The threshold is less than the first number threshold.

Wherein, if the first number of users is less than the second number threshold, that is, the number of users currently accessing the server cluster is less than the second number threshold, it indicates that the number of users currently accessing the server cluster is too small, and it is necessary to reduce the number of servers responding to the target service. Quantity, to avoid waste of resources.

It should be noted that, in the embodiment of the present disclosure, the order of execution between step S202 and step S204- is not limited. S204 may be executed after S202 is executed first. S202 may also be executed after S204 is executed first, or S202 and S204 may be executed simultaneously.

In an embodiment of the present disclosure, in response to the first number of users being less than the second number threshold, reducing the number of servers in the server cluster that respond to the target service includes: for each server in the server cluster, obtaining the number of current visiting users of each server; real-time monitoring of the number of target visiting users corresponding to the target server with the smallest number of current visiting users; and shutting down the target server when the number of target visiting users is lower than the third number threshold.

In the embodiment of the present disclosure, the number of current visiting users is the same as the number of servers responding to the target service in the server cluster, and there is a one-to-one correspondence. For example: if there are three servers responding to the target service in the server cluster, then three current visiting users are obtained. For example: the current number of visiting users m1 corresponding to server A, the current number of visiting users m2 corresponding to server B, and the current number of visiting users m3 corresponding to server C.

Compare the three current visiting user quantities m1, m2 and m3 to obtain the current visiting user quantity with the smallest numerical value. The server C corresponding to the current number of visiting users m3 with the smallest numerical value is determined as the target server.

In the embodiment of the present disclosure, with the disconnection between the old user and the server cluster (for example: the old user exits the game client), as the connection between the new user and the server cluster is established (for example: the new user logs in the game client), the number of users accessing the server cluster is constantly changing.

In the embodiment of the present disclosure, after the target server is determined, if an access request sent by the client is received, the client corresponding to the access request will establish a connection with the non-target server, and the target server will no longer receive the client's access request, that is, it will not Then establish a communication connection with the new client. As time continues to increase, clients accessing the target server gradually leave, and the number of users accessing the target server gradually decreases.

Wherein, the set threshold can be set according to the actual situation, and optionally, the set threshold is 0.

In one embodiment of the present disclosure, when the number of target accessing users accessing the target server drops to 0, it indicates that no client is accessing the target server. At this time, the target server is shut down, and the target server no longer responds to the target service.

In the embodiment of the present disclosure, when it is necessary to reduce the number of servers that respond to the target service, the server that needs to be shut down is determined according to the number of users accessing the server, and when the number of users visiting the server is reduced to 0, the server is shut down to avoid excessive Multiple servers respond to target services, resulting in waste of resources.

FIG. 5 is a schematic structural diagram of a server expansion and contraction device in an embodiment of the present disclosure. This embodiment is applicable to the situation of expanding or reducing the capacity of a server. The server expansion and contraction device can use software and/or hardware Realized in a manner, the server expansion and contraction device can be configured in electronic equipment.

As shown in FIG. 5 , the server expansion and contraction device provided by the embodiment of the present disclosure mainly includes: a first user number acquisition module 51 , a user number comparison module 52 and a server update module 53 .

Wherein, the first user number acquisition module 51 is used to obtain the first number of users who are currently accessing the server cluster; the user number comparison module 52 is used to compare the first user number with a preset number threshold to obtain a comparison result A server number updating module 53, configured to update the servers in the server cluster that respond to the target service according to the comparison result.

The present disclosure relates to a server expansion and contraction device, which is used to execute the following process: obtain the first number of users who are currently accessing the server cluster; compare the first number of users with a preset number threshold to obtain a comparison result; according to the Based on the comparison result, the server in the server cluster that responds to the target service is updated. In the embodiments of the present disclosure, by obtaining the number of users who are accessing the server cluster, and comparing the number of users with the set number threshold, the expansion and contraction of the server can be realized, without obtaining the performance parameters of the server, and without manual operation, which is simple, fast, and easy. accomplish.

In an embodiment of the present disclosure, the server update module includes: a first comparing unit, configured to compare the first number of users with a first number threshold; a server adding unit, configured to respond to the first The number of users is greater than or equal to the first number threshold, increasing the number of servers responding to the target service in the server cluster and using the updated server cluster to execute the target service; and/or, the first comparison unit is used to compare the The first number of users is compared with the second number threshold; the server reduction unit is configured to reduce the number of servers responding to the target service in the server cluster and use The updated server cluster executes the target service, wherein the second quantity threshold is smaller than the first quantity threshold.

In one embodiment of the present disclosure, the server adding unit includes: a newly added server determining subunit, configured to determine a server in an idle state in the server cluster as a newly added server; a start command generating subunit, configured to generate A server start instruction; a newly added server start subunit is used to start the new server based on the server start instruction; an application program start subunit is used to use container technology to start a target application in the new server; the target A service executing subunit, configured to execute the target service by using the server cluster including the newly added server.

In one embodiment of the present disclosure, the application launching subunit includes: a container creating unit, used for creating the first container and the second container in the newly added server; a module file downloading unit, used for using The first container downloads the module file required by the target application program, and stores the module file in a local disk; the main program file download unit is used to download the target application program using the second container The required main program file; the module file synchronization unit is used to obtain the module file from the local disk through data volume synchronization; the application program startup unit is used to start the target based on the main program file and the module file application.

In one embodiment of the present disclosure, the server reduction unit includes: a subunit for obtaining the number of current visiting users, for each server in the server cluster, to obtain the current number of visiting users of each server; a subunit for monitoring the number of target visiting users The unit is configured to monitor in real time the number of target access users corresponding to the target server with the smallest number of current access users; the target server shutdown subunit is configured to shut down the target server in response to the number of target access users being lower than a third threshold.

In an embodiment of the present disclosure, the server reduction unit further includes: a client access subunit, configured to monitor in real time the number of target access users corresponding to the target server with the smallest number of current access users. access request, the client corresponding to the access request is connected to a non-target server, wherein the non-target server refers to other servers in the server cluster except the target server with the smallest number of currently accessing users.

The server expansion and contraction device provided by the embodiment of the present disclosure can execute the steps performed in the server expansion and contraction method provided by the method embodiment of the present disclosure, and has the execution steps and beneficial effects and will not be repeated here.

FIG. 6 is a schematic structural diagram of an electronic device in an embodiment of the present disclosure. Referring to FIG. 6 in detail below, it shows a schematic structural diagram of an electronic device 600 suitable for implementing an embodiment of the present disclosure. The electronic device 600 in the embodiment of the present disclosure may include, but is not limited to, mobile phones, notebook computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), PMPs (Portable Multimedia Players), vehicle-mounted terminals ( Mobile terminals such as car navigation terminals), wearable terminal devices, etc., and fixed terminals such as digital TVs, desktop computers, smart home devices, etc. The electronic device shown in FIG. 6 is only an example, and should not limit the functions and application scope of the embodiments of the present disclosure.

As shown in FIG. 6, an electronic device 600 may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 601, which may be randomly accessed according to a program stored in a read-only memory (ROM) 602 or loaded from a storage device 608. The program in the memory (RAM) 603 executes various appropriate actions and processes to implement the server expansion and contraction method according to the embodiment of the present disclosure. In the RAM 603, various programs and data necessary for the operation of the terminal device 600 are also stored. The processing device 601 , ROM 602 and RAM 603 are connected to each other through a bus 604 . An input/output (I/O) interface 605 is also connected to the bus 604 .

Typically, the following devices can be connected to the I/O interface 605: input devices 606 including, for example, a touch screen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; including, for example, a liquid crystal display (LCD), speaker, vibration an output device 607 such as a computer; a storage device 608 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 609. The communication means 609 may allow the terminal device 600 to perform wireless or wired communication with other devices to exchange data. While FIG. 6 shows a terminal device 600 having various means, it should be understood that implementing or possessing all of the illustrated means is not a requirement. More or fewer means may alternatively be implemented or provided.

In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments of the present disclosure include a computer program product, which includes a computer program carried on a non-transitory computer readable medium, and the computer program includes program code for executing the method shown in the flow chart, thereby realizing the above The server expansion and contraction method. In such an embodiment, the computer program may be downloaded and installed from a network via communication means 609 , or from storage means 608 , or from ROM 602 . When the computer program is executed by the processing device 601, the above-mentioned functions defined in the methods of the embodiments of the present disclosure are executed.

It should be noted that the above-mentioned computer-readable medium in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. A computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present disclosure, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave carrying computer-readable program code therein. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can transmit, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device . Program code embodied on a computer readable medium may be transmitted by any appropriate medium, including but not limited to wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

In some embodiments, the client and the server can communicate using any currently known or future network protocols such as HTTP (Hyper Text Transfer Protocol, Hypertext Transfer Protocol), and can communicate with digital data in any form or medium The communication (eg, communication network) interconnections. Examples of communication networks include local area networks ("LANs"), wide area networks ("WANs"), internetworks (e.g., the Internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed network of.

The above-mentioned computer-readable medium may be included in the above-mentioned electronic device, or may exist independently without being incorporated into the electronic device.

The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by the terminal device, the terminal device: obtains the number of first users who are currently accessing the server cluster; The quantity is compared with the preset quantity threshold to obtain a comparison result; according to the comparison result, the server responding to the target service in the server cluster is updated.

Optionally, when the above one or more programs are executed by the terminal device, the terminal device may also perform other steps described in the foregoing embodiments.

Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, or combinations thereof, including but not limited to object-oriented programming languages—such as Java, Smalltalk, C++, and Includes conventional procedural programming languages - such as the "C" language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as through an Internet service provider). Internet connection).

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code that contains one or more logical functions for implementing specified executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified functions or operations , or may be implemented by a combination of dedicated hardware and computer instructions.

The units involved in the embodiments described in the present disclosure may be implemented by software or by hardware. Wherein, the name of a unit does not constitute a limitation of the unit itself under certain circumstances.

The functions described herein above may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), System on Chips (SOCs), Complex Programmable Logical device (CPLD) and so on.

In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media would include one or more wire-based electrical connections, portable computer discs, hard drives, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM or flash memory), optical fiber, compact disk read only memory (CD-ROM), optical storage, magnetic storage, or any suitable combination of the foregoing.

The above description is only a preferred embodiment of the present disclosure and an illustration of the applied technical principle. Those skilled in the art should understand that the disclosure scope involved in this disclosure is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but also covers the technical solutions formed by the above-mentioned technical features or Other technical solutions formed by any combination of equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this disclosure.

In addition, while operations are depicted in a particular order, this should not be understood as requiring that the operations be performed in the particular order shown or to be performed in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while the above discussion contains several specific implementation details, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

Claims (10)

1. A server capacity expansion and reduction method is characterized by comprising the following steps:

acquiring the number of first users currently accessing a server cluster;

comparing the first user number with a preset number threshold to obtain a comparison result;

and updating the server responding to the target service in the server cluster according to the comparison result.

2. The method of claim 1, wherein comparing the first number of users with a preset number threshold to obtain a comparison result, and updating the server in the server cluster responding to the target service according to the comparison result comprises:

comparing the first number of users to a first number threshold;

responding to the first number of users being larger than or equal to the first number threshold value, increasing the number of servers responding to the target service in the server cluster, and executing the target service by utilizing the updated server cluster; and/or the presence of a gas in the gas,

comparing the first number of users to a second number threshold;

and in response to the first number of users being less than or equal to the second number threshold, reducing the number of servers in the server cluster responding to the target service and executing the target service by using the updated server cluster, wherein the second number threshold is less than the first number threshold.

3. The method of claim 2, wherein increasing the number of servers in the server cluster responding to the target service and executing the target service using the updated server cluster comprises:

determining a server in an idle state in the server cluster as a new server;

generating a server starting instruction;

starting the newly added server based on the server starting instruction;

starting a target application program in the newly added server by utilizing a container technology;

and executing the target service by utilizing the server cluster comprising the newly added server.

4. The method of claim 3, wherein the launching the target application in the add-on server using container technology comprises:

creating a first container and a second container in the newly added server;

downloading a module file required by the target application program by using the first container, and storing the module file in a local disk;

downloading a main program file required by the target application program by using the second container;

acquiring the module file from a local disk in a data volume synchronization mode;

and starting the target application program based on the main program file and the module file.

5. The method of claim 2, wherein reducing the number of servers in the server cluster that respond to the target service in response to the first number of users being less than the second number threshold comprises:

aiming at each server in the server cluster, acquiring the current access user quantity of each server;

monitoring the number of target access users corresponding to a target server with the minimum number of current access users in real time;

and when the number of the target access users is lower than a third number threshold, closing the target server.

6. The method of claim 5, wherein the number of target access users corresponding to the target server with the minimum number of current access users is monitored in real time, and the method further comprises the following steps:

and if an access request sent by a client is received, accessing the client corresponding to the access request to a non-target server, wherein the non-target server refers to other servers in the server cluster except a target server with the minimum current access user amount.

7. A server capacity expansion and reduction device is characterized by comprising:

the server cluster comprises a first user number acquisition module, a first server cluster acquisition module and a second user number acquisition module, wherein the first user number acquisition module is used for acquiring the number of first users currently accessing the server cluster;

the user number comparison module is used for comparing the first user number with a preset number threshold value to obtain a comparison result;

and the server updating module is used for updating the server responding to the target service in the server cluster according to the comparison result.

8. The apparatus of claim 7, wherein the server update module comprises:

a first comparing unit, configured to compare the first number of users with a first number threshold;

a server increasing unit, configured to increase, in response to that the number of the first users is greater than or equal to the first number threshold, the number of servers in the server cluster responding to the target service, and execute the target service by using the updated server cluster; and/or the presence of a gas in the gas,

a first comparing unit, configured to compare the first number of users with a second number threshold;

and a server reducing unit, configured to reduce the number of servers in the server cluster responding to the target service and execute the target service by using the updated server cluster in response to that the number of the first users is smaller than or equal to the second number threshold, where the second number threshold is smaller than the first number threshold.

9. An electronic device, characterized in that the electronic device comprises:

one or more processors;

storage means for storing one or more programs;

when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-6.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-6.

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