CN115604272A - Load balancing method, device, system and system creation method, equipment and medium - Google Patents

Abstract

The application discloses a load balancing method, device, system, system creation method, equipment and media, and relates to the field of computer technology. The load balancing method includes: receiving a request from a client, and determining a target virtual server in a service pool according to the request; judging the target Whether the subnet where the virtual server is located is the same as the subnet associated with the Layer 7 load balancer; The switch sends it to the target virtual server, and receives the response of the target virtual server to the request through the virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, and the virtual switch associated with the seven-layer load balancer; and returns the response to the client. This application realizes seven-layer load balancing of multiple virtualized servers across multiple subnets.

Description

Load balancing method, device, system and system creation method, equipment and medium

technical field

The present application relates to the field of computer technology, and more specifically, to a load balancing method, device, system, a method and device for creating a load balancing system, an electronic device, and a computer-readable storage medium.

Background technique

With the continuous development of cloud computing, virtualized server clusters are becoming larger and larger, and corresponding virtualized networks are becoming more and more complex. Currently, load balancing solutions in a virtualized environment are basically aimed at layer-7 load balancing of virtual servers in a single subnet, or layer-4 load balancing of virtual servers across multiple subnets.

Therefore, how to implement layer-7 load balancing for multiple virtualized servers across multiple subnets is a technical problem to be solved by those skilled in the art.

Contents of the invention

The purpose of this application is to provide a load balancing method, device, system, a method for creating a load balancing system, a device, an electronic device, and a computer-readable storage medium, so as to realize multiple load balancing across multiple subnets. Layer-7 load balancing of virtualized servers.

In order to achieve the above purpose, the present application provides a load balancing method, which is applied to a seven-layer load balancer in a load balancing system, and the load balancing system includes a virtual gateway, a virtual router associated with the virtual gateway, and the A plurality of virtual switches associated with a virtual router, the layer-7 load balancer associated with any one of the virtual switches, and the service pool associated with the layer-7 load balancer, each of the virtual switches forms a corresponding subnet , each subnet is associated with a plurality of virtual servers, and the service pool includes at least one virtual server associated with each subnet;

The methods include:

receiving a request from a client, and determining a target virtual server in the service pool according to the request;

Judging whether the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer;

If not, the request is sequentially sent to the target virtual server through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual switch corresponding to the subnet where the target virtual server is located, and sequentially receiving the response of the target virtual server to the request through the virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, and the virtual switch associated with the layer-7 load balancer;

The response is returned to the client.

Wherein, after the judging whether the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer, it also includes:

If the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer, the request is sent to the target virtual server through the virtual switch associated with the layer-7 load balancer, and A response of the target virtual server to the request is received through a virtual switch associated with the layer-7 load balancer.

Wherein, the request of receiving the client includes:

Receive the request of the public network client through the virtual gateway, the virtual router, and the virtual switch associated with the seven-layer load balancer in turn;

Correspondingly, return the response to the client, including:

Returning the response to the public network client through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual gateway in sequence.

Wherein, the request of receiving the client includes:

Receive requests from subnet clients in the target subnet;

Correspondingly, return the response to the client, including:

The response is returned to the subnet client.

Wherein, the receiving the request of the subnet client in the target subnet includes:

If the target subnet is the same as the subnet associated with the layer-7 load balancer, receiving a request from a subnet client in the target subnet through a virtual switch corresponding to the target subnet;

Correspondingly, return the response to the subnet client, including:

Returning the response to the subnet client through the virtual switch corresponding to the target subnet.

Wherein, the receiving the request of the subnet client in the target subnet includes:

If the target subnet is different from the subnet associated with the layer-7 load balancer, the virtual switch corresponding to the target subnet, the virtual router, and the virtual switch associated with the layer-7 load balancer are received in sequence a request from a subnet client in the target subnet;

Correspondingly, return the response to the subnet client, including:

The response is returned to the subnet client through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual switch corresponding to the target subnet in sequence.

To achieve the above purpose, this application provides a method for creating a load balancing system, including:

Create a virtual router and a virtual gateway, and associate the virtual gateway to the virtual router; wherein the virtual gateway is used to provide a floating IP address;

creating a plurality of virtual switches associated with the virtual router, each of the virtual switches forming a corresponding subnet;

Create a plurality of virtual server clusters that contain multiple virtual servers, set the IP address of each virtual server, and associate each virtual server in the virtual server cluster with a corresponding virtual switch, so that each The virtual server in the virtual server cluster joins the subnet corresponding to the virtual switch;

Create a service pool, set the port of the service pool, and associate at least one virtual server in each of the subnets with the service pool; wherein, the port of the service pool is provided for the virtual server in the service pool The port of the real service;

Create a layer-7 load balancer based on a preset system image containing a layer-7 load balancer, associate the layer-7 load balancer with any one of the virtual switches, and set the IP address and port of the layer-7 load balancer; Wherein, the IP address of the seven-layer load balancer is within the scope of the subnet corresponding to the associated virtual switch;

Associating the service pool with the layer-7 load balancer, and configuring the corresponding relationship between the IP addresses of the virtual servers in the service pool and the ports of the service pool in the layer-7 load balancer.

Wherein, after associating the service pool with the seven-layer load balancer, it also includes:

Unbinding the service pool associated with the layer-7 load balancer, and associating a new service pool with the layer-7 load balancer.

Wherein, after associating at least one virtual server in each of the subnets with the service pool, further includes:

adding a new virtual server in said service pool;

Or, delete the virtual server in the service pool.

Wherein, after creating a plurality of virtual switches associated with the virtual router, it also includes:

associating a new virtual switch to the virtual router;

Or, delete the virtual switch associated with the virtual switch.

In order to achieve the above purpose, the present application provides a load balancing device, which is applied to a seven-layer load balancer in a load balancing system, and the load balancing system includes a virtual gateway, a virtual router associated with the virtual gateway, and the A plurality of virtual switches associated with a virtual router, the layer-7 load balancer associated with any one of the virtual switches, and the service pool associated with the layer-7 load balancer, each of the virtual switches forms a corresponding subnet , each subnet is associated with a plurality of virtual servers, and the service pool includes at least one virtual server associated with each subnet;

The devices include:

A determining module, configured to receive a request from a client, and determine a target virtual server in the service pool according to the request;

A judging module, configured to judge whether the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer;

The first response module is configured to pass the request sequentially through the virtual switch associated with the layer-7 load balancer when the subnet where the target virtual server is located is different from the subnet associated with the layer-7 load balancer, The virtual router and the virtual switch corresponding to the subnet where the target virtual server is located send to the target virtual server, and sequentially pass through the virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, the The virtual switch associated with the seven-layer load balancer receives the response of the target virtual server to the request;

A return module, configured to return the response to the client.

To achieve the above purpose, the present application provides a device for creating a load balancing system, including:

The first creation module is used to create a virtual router and a virtual gateway, and associate the virtual gateway with the virtual router; wherein, the virtual gateway is used to provide a floating IP address;

The second creation module is used to create a plurality of virtual switches associated with the virtual router, and each of the virtual switches forms a corresponding subnet;

The third creation module is used to create a plurality of virtual server clusters containing a plurality of virtual servers, set the IP address of each virtual server, and associate each virtual server in the virtual server cluster with the corresponding virtual server In the switch, the virtual server in each virtual server cluster is added to the subnet corresponding to the virtual switch;

The fourth creation module is used to create a service pool, set the port of the service pool, and associate at least one virtual server in each subnet with the service pool; wherein, the port of the service pool is the The virtual server in the service pool provides the port of the real service;

The fifth creation module is used to create a layer-7 load balancer based on a preset system image containing a layer-7 load balancer, associate the layer-7 load balancer with any one of the virtual switches, and set the layer-7 load balancer The IP address and port of the load balancer; wherein, the IP address of the seven-layer load balancer is within the scope of the subnet corresponding to the associated virtual switch;

An association module, configured to associate the service pool with the seven-layer load balancer, and configure the connection between the IP address of the virtual server in the service pool and the port of the service pool in the seven-layer load balancer corresponding relationship.

To achieve the above purpose, the application provides a load balancing system, including:

A virtual gateway connected to the public network;

a virtual router associated with said virtual gateway;

A plurality of virtual switches associated with the virtual router; wherein each of the virtual switches forms a corresponding subnet, and each of the subnets is associated with a corresponding virtual server cluster, and each of the virtual server clusters includes multiple virtual server;

a Layer 7 load balancer associated with any one of said virtual switches;

A service pool associated with the seven-layer load balancer; wherein, the service pool includes at least one virtual server associated with each of the subnets.

In order to achieve the above purpose, the application provides an electronic device, including:

memory for storing computer programs;

A processor configured to implement the steps of the load balancing method or the method for creating a load balancing system as described above when executing the computer program.

In order to achieve the above object, the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above load balancing method or load balancing system is implemented. Steps to create a method.

From the above solutions, it can be seen that a load balancing method provided by the present application is applied to a seven-layer load balancer in a load balancing system, and the load balancing system includes a virtual gateway, a virtual router associated with the virtual gateway, and the A plurality of virtual switches associated with a virtual router, the layer-7 load balancer associated with any one of the virtual switches, and the service pool associated with the layer-7 load balancer, each of the virtual switches forms a corresponding subnet , each of the subnets is associated with a plurality of virtual servers, and the service pool contains at least one virtual server associated with each subnet; the method includes: receiving a request from a client, and according to the request in the service pool determine the target virtual server; determine whether the subnet where the target virtual server is located is the same as the subnet associated with the seven-layer load balancer; if not, then pass the request sequentially through the associated seven-layer load balancer The virtual switch, the virtual router, and the virtual switch corresponding to the subnet where the target virtual server is located send to the target virtual server, and pass through the virtual switch corresponding to the subnet where the target virtual server is located, and the virtual router in turn . The virtual switch associated with the layer-7 load balancer receives a response from the target virtual server to the request; and returns the response to the client.

This application is based on the existing virtualization platform, which can conveniently control the relationship between subnets and virtual routes and the relationship between subnets and virtual servers. By adding a controllable seven-layer load balancer and the relationship between subnets, The relationship between the service pool and the virtual server and the relationship between the seven-layer load balancer and the service pool can realize the seven-layer load balancing of the virtual server across the multi-subnet environment, and flexibly control the range of virtual servers proxied by the seven-layer load balancer , the maximum control granularity of the virtual server proxied by the seven-layer load balancer is a service pool, and the minimum is a virtual server, and the control granularity of the load balancer in the related art is a server. This application expands the control granularity and improves the deployment efficiency. The present application also discloses a load balancing device and system, a creation method and device of a load balancing system, an electronic device, and a computer-readable storage medium, which can also achieve the above-mentioned technical effects.

It is to be understood that both the foregoing general description and the following detailed description are exemplary only and are not restrictive of the application.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work. The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the description, together with the following specific embodiments, are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the attached picture:

FIG. 1 is a structural diagram of a load balancing system according to an exemplary embodiment;

Fig. 2 is a flow chart showing a load balancing method according to an exemplary embodiment;

Fig. 3 is a flow chart showing another load balancing method according to an exemplary embodiment;

Fig. 4 is a flowchart of a load balancing method according to an exemplary embodiment;

Fig. 5 is a flow chart showing a method for creating a load balancing system according to an exemplary embodiment;

Fig. 6 is a structural diagram of another load balancing system shown according to an exemplary embodiment;

Fig. 7 is a schematic diagram of a data flow of a seven-layer load balancer accessing a service pool according to an exemplary embodiment;

FIG. 8 is a schematic diagram of a data flow of a subnet user accessing a layer-7 load balancer according to an exemplary embodiment;

FIG. 9 is a schematic diagram of a data flow of a public network user accessing a layer-7 load balancer according to an exemplary embodiment;

Fig. 10 is a structural diagram of a load balancing device according to an exemplary embodiment;

Fig. 11 is a structural diagram of an apparatus for creating a load balancing system according to an exemplary embodiment;

Fig. 12 is a structural diagram of an electronic device according to an exemplary embodiment.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. In addition, in the embodiments of the present application, "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.

This embodiment provides a load balancing system, which implements layer-7 load balancing for multiple virtualized servers spanning multiple subnets.

Referring to FIG. 1, FIG. 1 is a structural diagram of a load balancing system according to an exemplary embodiment, as shown in FIG. 1, including:

A virtual gateway 10 connected to the public network;

A virtual router 20 associated with the virtual gateway 10;

A plurality of virtual switches 30 associated with the virtual router 20; wherein each of the virtual switches forms a corresponding subnet, and each of the subnets is associated with a corresponding virtual server cluster 40, and each of the virtual server clusters 40 includes a plurality of virtual servers 401;

A seven-layer load balancer 50 associated with any one of the virtual switches 30;

A service pool 60 associated with the layer-7 load balancer 50; wherein, the service pool 60 includes at least one virtual server 401 associated with each subnet.

In a specific implementation, the virtual router is associated with multiple subnets, and each subnet is associated with a virtual server cluster. The seven-layer load balancer is associated with any subnet to realize intercommunication with multiple virtual server clusters. One or more virtual servers in each virtual server cluster join the service pool, and the service pool is associated with a layer-7 load balancer, which provides load balancing for the service pool. The virtual gateway is associated with the virtual router, and the virtual gateway provides a floating IP externally, which is used for the seven-layer load balancer to connect to the public network.

The embodiment of the present application is based on the existing virtualization platform, which can conveniently control the relationship between subnets and virtual routes and the relationship between subnets and virtual servers. By adding a controllable seven-layer load balancer and subnet association relationship, the association between service pools and virtual servers, and the association between layer-7 load balancers and service pools, which can realize layer-7 load balancing of virtual servers across multiple subnet environments, and flexibly control the virtual servers proxied by layer-7 load balancers. In the range of servers, the control granularity of the virtual server proxied by the seven-layer load balancer is at most one service pool, and the minimum is one virtual server, while the control granularity of the load balancer in the related art is one server, the embodiment of this application expands Granularity of control improves deployment efficiency.

This embodiment provides a load balancing method, which is applied to the seven-layer load balancer in the above load balancing system. Referring to FIG. 2, FIG. 2 is a flowchart of a load balancing method according to an exemplary embodiment, as shown in FIG. 2, including:

S101: Receive a request from a client, and determine a target virtual server in the service pool according to the request;

The execution subject of this embodiment is the seven-layer load balancer in the above load balancing system. In the specific implementation, the client sends a request to the load balancing system. The client can be a public network client and access the load balancing system through the floating IP address provided by the virtual gateway. The client can also be a server in the load balancing system. Clients in the subnet are not specifically limited here. When the seven-layer load balancer receives a request from a client, the access service pool determines the target virtual server.

S102: Determine whether the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer; if yes, proceed to S103; if not, proceed to S104;

S103: Send the request to the target virtual server through the virtual switch associated with the layer-7 load balancer, and receive the request from the target virtual server through the virtual switch associated with the layer-7 load balancer response;

S104: Send the request to the target virtual server sequentially through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual switch corresponding to the subnet where the target virtual server is located, and sequentially pass through the The virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, and the virtual switch associated with the seven-layer load balancer receive the response of the target virtual server to the request;

In a specific implementation, if the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer, the layer-7 load balancer sends the client's request to the target virtual server through the virtual switch corresponding to the subnet, And receive the target virtual server's response to the request.

S105: Return the response to the client.

In a specific implementation, the seven-layer load balancer returns the target virtual server's response to the request to the client.

The embodiment of the present application is based on the existing virtualization platform, which can conveniently control the relationship between subnets and virtual routes and the relationship between subnets and virtual servers. By adding a controllable seven-layer load balancer and subnet association relationship, the association between service pools and virtual servers, and the association between layer-7 load balancers and service pools, which can realize layer-7 load balancing of virtual servers across multiple subnet environments, and flexibly control the virtual servers proxied by layer-7 load balancers. In the range of servers, the control granularity of the virtual server proxied by the seven-layer load balancer is at most one service pool, and the minimum is one virtual server, while the control granularity of the load balancer in the related art is one server, the embodiment of this application expands Granularity of control improves deployment efficiency.

The embodiment of the present application discloses a load balancing method. Compared with the previous embodiment, this embodiment further explains and optimizes the technical solution. specific:

Referring to FIG. 3 , a flow chart of another load balancing method shown according to an exemplary embodiment, as shown in FIG. 3 , includes:

S201: Receive a request from a public network client through the virtual gateway, the virtual router, and the virtual switch associated with the layer-7 load balancer in sequence;

In this embodiment, the public network client accesses the load balancing system through the floating IP address provided by the virtual gateway, that is, sends a request to the virtual gateway, the virtual gateway sends the request to the virtual router, and the virtual router sends the request to the seven The virtual switch associated with the layer load balancer, which sends the request to the layer-7 load balancer.

S202: Determine a target virtual server in the service pool according to the request;

S203: Determine whether the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer; if yes, proceed to S204; if not, proceed to S205;

S204: Send the request to the target virtual server through the virtual switch associated with the layer-7 load balancer, and receive the request from the target virtual server through the virtual switch associated with the layer-7 load balancer response;

S205: Send the request to the target virtual server sequentially through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual switch corresponding to the subnet where the target virtual server is located, and sequentially pass through the The virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, and the virtual switch associated with the seven-layer load balancer receive the response of the target virtual server to the request;

S206: Return the response to the public network client through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual gateway in sequence.

In the specific implementation, the seven-layer load balancer returns the response of the target virtual server to the request to the public network client based on the path of the received request, that is, through the virtual switch, virtual router and virtual gateway associated with the seven-layer load balancer in turn. The response is returned to the public network client.

The embodiment of the present application discloses a load balancing method. Compared with the first embodiment of the load balancing method, this embodiment further explains and optimizes the technical solution. specific:

Referring to FIG. 4 , a flow chart of another load balancing method shown according to an exemplary embodiment, as shown in FIG. 4 , includes:

S301: Receive a request from a subnet client in the target subnet;

In this embodiment, the target subnet is a subnet in the load balancing system. The target subnet can be the same as the subnet associated with the Layer 7 load balancer, or it can be different from the subnet associated with the Layer 7 load balancer. This is not specifically limited. Subnet clients in the target subnet can access the layer-7 load balancer through the association relationship in the load balancing system, that is, send requests to the layer-7 load balancer.

S302: Determine a target virtual server in the service pool according to the request;

S303: Determine whether the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer; if yes, proceed to S304; if not, proceed to S305;

S304: Send the request to the target virtual server through the virtual switch associated with the layer-7 load balancer, and receive the request from the target virtual server through the virtual switch associated with the layer-7 load balancer response;

S305: Send the request to the target virtual server sequentially through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual switch corresponding to the subnet where the target virtual server is located, and sequentially pass through the The virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, and the virtual switch associated with the seven-layer load balancer receive the response of the target virtual server to the request;

S306: Return the response to the subnet client.

In a specific implementation, the seven-layer load balancer returns the response of the target virtual server to the request to the subnet client based on the path of the received request.

As a feasible implementation manner, the receiving the request from the subnet client in the target subnet includes: if the target subnet is the same as the subnet associated with the layer-7 load balancer, passing through the target subnet The corresponding virtual switch receives the request from the subnet client in the target subnet; correspondingly, returning the response to the subnet client includes: returning the response through the virtual switch corresponding to the target subnet to the subnet client.

In a specific implementation, if the target subnet is the same as the subnet associated with the Layer 7 load balancer, the subnet client in the target subnet sends a request to the virtual switch corresponding to the target subnet, and the virtual switch sends the request to Layer-7 load balancer. After the Layer 7 load balancer receives the target virtual server's response to the request, it returns it to the subnet client through the virtual switch.

As another feasible implementation manner, the receiving the request from the subnet client in the target subnet includes: if the target subnet is different from the subnet associated with the layer-7 load balancer, sequentially passing through the target subnet The virtual switch corresponding to the subnet, the virtual router, and the virtual switch associated with the seven-layer load balancer receive the request from the subnet client in the target subnet; correspondingly, return the response to the subnet client The terminal includes: returning the response to the subnet client through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual switch corresponding to the target subnet in sequence.

In a specific implementation, if the target subnet is different from the subnet associated with the Layer 7 load balancer, the subnet client in the target subnet sends a request to the virtual switch corresponding to the target subnet, and the virtual switch sends the request to Layer-7 load balancer. After the Layer 7 load balancer receives the target virtual server's response to the request, it returns it to the subnet client through the virtual switch.

This embodiment provides a method for creating a load balancing system. Referring to FIG. 5 , FIG. 5 is a flowchart of a method for creating a load balancing system according to an exemplary embodiment, as shown in FIG. 5 , including:

S401: Create a virtual router and a virtual gateway, and associate the virtual gateway with the virtual router; wherein, the virtual gateway is used to provide a floating IP address;

In this embodiment, the topology of the load balancing system is created based on the virtualization platform. In this step, a new virtual router and a virtual gateway are created, and the virtual gateway is associated with the virtual router. The virtual gateway provides a floating IP. Based on the port forwarding function, the seven-layer load balancer Connect to the public network.

S402: Create a plurality of virtual switches associated with the virtual router, and each of the virtual switches forms a corresponding subnet;

In this step, create multiple virtual switches and associate them with virtual routers, and one virtual switch forms a subnet.

S403: Create multiple virtual server clusters containing multiple virtual servers, set the IP address of each virtual server, and associate each virtual server in the virtual server cluster with a corresponding virtual switch, so that Each virtual server in the virtual server cluster joins the subnet corresponding to the virtual switch;

In this step, create multiple virtual servers, set virtual server IP addresses, and divide them into multiple groups and associate them with multiple virtual switches to form multiple virtual server clusters.

S404: Create a service pool, set the port of the service pool, and associate at least one virtual server in each subnet with the service pool; wherein, the port of the service pool is a virtual server in the service pool The port where the server provides real services;

In this step, create a new service pool, set the port of the service pool, and associate one or more virtual servers in each subnet to the service pool. The service pool port is the port on which the virtual server in the service pool provides real services.

S405: Create a layer-7 load balancer based on a preset system image containing a layer-7 load balancer, associate the layer-7 load balancer with any one of the virtual switches, and set the IP address of the layer-7 load balancer and port; wherein, the IP address of the seven-layer load balancer is within the scope of the subnet corresponding to the associated virtual switch;

In this step, create a new layer-7 load balancer based on the preset system image containing a layer-7 load balancer. The layer-7 load balancer is associated with one of the virtual switches, and the IP address and port of the layer-7 load balancer are set for To provide layer-7 load balancing services, the IP address must be within the range of the associated subnet. Users access the Layer 7 load balancing service through this IP address and port.

S406: Associating the service pool with the layer-7 load balancer, configuring in the layer-7 load balancer the corresponding relationship between the IP address of the virtual server in the service pool and the port of the service pool .

In this step, associate the service pool with the layer-7 load balancer, and the system will automatically configure "server IP: service pool port" to the layer-7 load balancer. A layer-7 load balancer can only be associated with one service pool.

On the basis of the above embodiments, as a preferred implementation manner, after associating the service pool with the layer-7 load balancer, it further includes: unbinding the service pool associated with the layer-7 load balancer, and Associate the new service pool to the layer-7 load balancer.

In a specific implementation, the service pool associated with the load balancer can be unbound and associated with a new service pool, so as to update the service pool. The granularity of controlling all virtual servers in a service pool is achieved by updating the service pool operation. The system will automatically update the configuration of the seven-layer load balancer according to the result of updating the service pool, and restart the load balancer to make the configuration take effect, ensuring that the correct seven-layer load balancing service is provided.

On the basis of the above embodiments, as a preferred implementation manner, after associating at least one virtual server in each of the subnets with the service pool, further includes: adding a new virtual server to the service pool virtual server, or, delete the virtual server in the service pool.

In a specific implementation, a virtual server can be added to the service pool or a virtual server in the service pool can be deleted, so as to update the virtual server. By updating the virtual server operation to achieve the granularity of controlling a single server in the service pool, the system will automatically update the configuration of the seven-layer load balancer according to the result of updating the virtual server, and restart the seven-layer load balancer to make the configuration take effect, ensuring that the correct seven-layer load balancer is provided. layer load balancing service.

On the basis of the above embodiments, as a preferred implementation manner, after creating multiple virtual switches and associating them with the virtual router, it also includes: associating a new virtual switch with the virtual router, or deleting the The virtual switch associated with the virtual switch.

In a specific implementation, a new virtual switch can be associated with the virtual router or a virtual switch associated with the virtual router can be deleted, so as to add or delete the virtual server cluster associated with the virtual switch, so as to update the virtual server cluster. Wherein, after the virtual server cluster is added, the virtual servers in the cluster can be allowed to be added to the service pool. And deleting a virtual server cluster can automatically release all the cluster virtual servers associated with the service pool.

An application embodiment provided by the present application is introduced below. Referring to FIG. 6 , FIG. 6 is a structural diagram of another load balancing system according to an exemplary embodiment. As shown in Figure 6, the virtual router is associated with subnet 1, subnet 2, and subnet 3, and the three subnets are respectively associated with three virtual server clusters. The Layer 7 load balancer is associated with subnet 1 and communicates with the three virtual server clusters. Virtual servers 2, 4, 6, and 7 join the same service pool, and the service pool is associated with a layer-7 load balancer, which provides load balancing for this service pool. The virtual gateway is associated with the virtual router and provides a floating IP to the outside world for the Layer 7 load balancer to connect to the public network.

Based on the existing virtualization platform, the user's networking configuration process is as follows:

Step 1: Create a new virtual router and virtual gateway, associate the virtual gateway to the virtual router, the virtual gateway provides a floating IP, and connect the layer-7 load balancer to the public network based on the port forwarding function.

Step 2: Create three virtual switches and associate them with the virtual router, and one virtual switch forms a subnet.

Step 3: Create nine virtual servers, set virtual server IP addresses, and divide them into three groups and associate them with three virtual switches to form three virtual server clusters.

Step 4: Create a new service pool, set the port of the service pool, and associate virtual servers 2, 4, 6, and 7 to the service pool. The service pool port is the port on which the virtual server in the service pool provides real services.

Step 5: Create a new layer-7 load balancer based on the preset system image containing a layer-7 load balancer. The layer-7 load balancer is associated with one of the virtual switches, and the IP address and port of the layer-7 load balancer are set to provide seven Layer load balancing service, the IP address must be within the range of the associated subnet. Users access the Layer 7 load balancing service through this IP address and port.

Step 6: Associate the service pool with the seven-layer load balancer, and the system automatically configures "server IP: service pool port" to the seven-layer load balancer. A layer-7 load balancer can only be associated with one service pool.

For the control scenario, it may include operations of updating service pools, updating virtual servers, and updating virtual server clusters.

Updating the service pool refers to unbinding the service pool associated with the load balancer and associating a new service pool. The granularity of controlling all virtual servers in a service pool is achieved by updating the service pool operation. The system will automatically update the configuration of the seven-layer load balancer according to the result of updating the service pool, and restart the load balancer to make the configuration take effect, ensuring that the correct seven-layer load balancing service is provided.

Updating a virtual server refers to adding a virtual server to a service pool or deleting a virtual server from a service pool. By updating the virtual server operation to achieve the granularity of controlling a single server in the service pool, the system will automatically update the configuration of the seven-layer load balancer according to the result of updating the virtual server, and restart the seven-layer load balancer to make the configuration take effect, ensuring that the correct seven-layer load balancer is provided. layer load balancing service.

Updating a virtual server cluster refers to associating a new virtual switch to a virtual router or deleting a virtual switch that has been associated to a virtual router, thereby adding or deleting a virtual server cluster that has been associated with a virtual switch. After adding a virtual server cluster, the virtual servers in the cluster can be allowed to be added to the service pool; and deleting the virtual server cluster can automatically release all the cluster virtual servers associated with the service pool.

For data flow, the Layer-7 load balancer accesses the service pool, that is, accesses the virtual servers in the service pool. Assume that the Layer-7 load balancer has been bound to subnet 1, and selects this request to distribute to virtual server 4, and the Layer-7 load balancer The data flow of the server accessing the service pool is shown in Figure 7. The seven-layer load balancer sends the request to the virtual router through the subnet 1, and the virtual router forwards the request to the virtual server 4 of the subnet 2, and the data flow direction is 1, 2, 3, 4; Virtual server 4 sends a response to the seven-layer load balancer, and the data flow direction is 5, 6, 7, and 8.

The data flow of subnet users accessing the Layer 7 load balancer is shown in Figure 8. Assume that the Layer 7 load balancer has been bound to the subnet 1, and the users of the subnet 2 access the Layer 7 load balancer. The user sends a request to the virtual router through subnet 2, and the virtual router forwards the request to the seven-layer load balancer of subnet 1, and the data flow direction is 1, 2, 3, 4; the seven-layer load balancer accesses the service pool to obtain the response, and then forwards Respond to the user, the response data flow is 5, 6, 7, 8.

The data flow of public network users accessing the Layer-7 load balancer is shown in Figure 9. Assume that the load balancer has been bound to subnet 1, and public network users access the Layer-7 load balancer. The user sends a request to the virtual router through the gateway, and the virtual router forwards the request to the seven-layer load balancer of subnet 1, and the data flow direction is 1, 2, 3, and 4; the seven-layer load balancer accesses the service pool to obtain the response, and then forwards the response to User, the response data flow direction is 5, 6, 7, 8.

A load balancing device provided by an embodiment of the present application is introduced below, and a load balancing device described below and a load balancing method described above may refer to each other.

Referring to FIG. 10 , a structural diagram of a load balancing device according to an exemplary embodiment, as shown in FIG. 10 , includes:

A determination module 101, configured to receive a request from a client, and determine a target virtual server in the service pool according to the request;

A judging module 102, configured to judge whether the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer;

The first response module 103 is configured to pass the request sequentially through the virtual switch associated with the layer-7 load balancer when the subnet where the target virtual server is located is different from the subnet associated with the layer-7 load balancer , the virtual router, and the virtual switch corresponding to the subnet where the target virtual server is located send to the target virtual server, and sequentially pass through the virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, and the The virtual switch associated with the seven-layer load balancer receives the response of the target virtual server to the request;

A return module 104, configured to return the response to the client.

The embodiment of the present application is based on the existing virtualization platform, which can conveniently control the relationship between subnets and virtual routes and the relationship between subnets and virtual servers. By adding a controllable seven-layer load balancer and subnet association relationship, the association between service pools and virtual servers, and the association between layer-7 load balancers and service pools, which can realize layer-7 load balancing of virtual servers across multiple subnet environments, and flexibly control the virtual servers proxied by layer-7 load balancers. In the range of servers, the control granularity of the virtual server proxied by the seven-layer load balancer is at most one service pool, and the minimum is one virtual server, while the control granularity of the load balancer in the related art is one server, the embodiment of this application expands Granularity of control improves deployment efficiency.

On the basis of the foregoing embodiments, as a preferred implementation manner, it also includes:

The second response module is configured to send the request to the virtual switch associated with the layer-7 load balancer when the subnet where the target virtual server is located is the same as the subnet associated with the layer-7 load balancer the target virtual server, and receive the response of the target virtual server to the request through the virtual switch associated with the layer-7 load balancer.

On the basis of the above-mentioned embodiments, as a preferred implementation manner, the determining module 101 is specifically configured to: sequentially receive the public network information through the virtual gateway, the virtual router, and the virtual switch associated with the layer-7 load balancer. a client's request, and determine a target virtual server in the service pool according to the request;

Correspondingly, the returning module 104 is specifically configured to: return the response to the public network client through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual gateway in sequence.

On the basis of the above embodiments, as a preferred implementation manner, the determining module 101 is specifically configured to: receive a request from a subnet client in a target subnet, and determine a target virtual server in the service pool according to the request ;

Correspondingly, the returning module 104 is specifically configured to: return the response to the subnet client.

On the basis of the above-mentioned embodiments, as a preferred implementation manner, the determining module 101 is specifically configured to: if the target subnet is the same as the subnet associated with the layer-7 load balancer, then pass the target subnet The virtual switch corresponding to the network receives the request of the subnet client in the target subnet, and determines the target virtual server in the service pool according to the request;

Correspondingly, the returning module 104 is specifically configured to: return the response to the subnet client through the virtual switch corresponding to the target subnet.

On the basis of the above-mentioned embodiments, as a preferred implementation manner, the determining module 101 is specifically configured to: if the target subnet is different from the subnet associated with the layer-7 load balancer, sequentially pass through the target The virtual switch corresponding to the subnet, the virtual router, and the virtual switch associated with the seven-layer load balancer receive the request from the subnet client in the target subnet, and determine the target virtual server in the service pool according to the request. server;

Correspondingly, the returning module 104 is specifically configured to: return the response to the subnet through the virtual switch associated with the layer-7 load balancer, the virtual router, and the virtual switch corresponding to the target subnet in sequence client.

The following is an introduction to an apparatus for creating a load balancing system provided in an embodiment of the present application. The apparatus for creating a load balancing system described below and the method for creating a load balancing system described above may refer to each other.

Referring to FIG. 11 , a structural diagram of an apparatus for creating a load balancing system according to an exemplary embodiment, as shown in FIG. 11 , includes:

The first creating module 201 is used to create a virtual router and a virtual gateway, and associate the virtual gateway with the virtual router; wherein, the virtual gateway is used to provide a floating IP address;

The second creating module 202 is configured to create a plurality of virtual switches associated with the virtual router, and each of the virtual switches forms a corresponding subnet;

The third creation module 203 is used to create multiple virtual server clusters containing multiple virtual servers, set the IP address of each virtual server, and associate each virtual server in the virtual server cluster with the corresponding In the virtual switch, the virtual server in each virtual server cluster is added to the subnet corresponding to the virtual switch;

The fourth creation module 204 is used to create a service pool, set the port of the service pool, and associate at least one virtual server in each subnet with the service pool; wherein, the port of the service pool is the The virtual server in the above service pool provides the port of the real service;

The fifth creation module 205 is configured to create a layer-7 load balancer based on a preset system image containing a layer-7 load balancer, associate the layer-7 load balancer with any one of the virtual switches, and set the layer-7 load balancer The IP address and port of the balancer; wherein, the IP address of the seven-layer load balancer is within the scope of the subnet corresponding to the associated virtual switch;

An associating module 206, configured to associate the service pool with the layer-7 load balancer, and configure the connection between the IP address of the virtual server in the service pool and the port of the service pool in the layer-7 load balancer Correspondence between.

The embodiment of the present application is based on the existing virtualization platform, which can conveniently control the relationship between subnets and virtual routes and the relationship between subnets and virtual servers. By adding a controllable seven-layer load balancer and subnet association relationship, the association between service pools and virtual servers, and the association between layer-7 load balancers and service pools, which can realize layer-7 load balancing of virtual servers across multiple subnet environments, and flexibly control the virtual servers proxied by layer-7 load balancers. In the range of servers, the control granularity of the virtual server proxied by the seven-layer load balancer is at most one service pool, and the minimum is one virtual server, while the control granularity of the load balancer in the related art is one server, the embodiment of this application expands Granularity of control improves deployment efficiency.

On the basis of the foregoing embodiments, as a preferred implementation manner, it also includes:

The first update module is configured to unbind the service pool associated with the layer-7 load balancer, and associate a new service pool with the layer-7 load balancer.

On the basis of the foregoing embodiments, as a preferred implementation manner, it also includes:

The second update module is configured to add a new virtual server in the service pool, or delete a virtual server in the service pool.

On the basis of the foregoing embodiments, as a preferred implementation manner, it also includes:

The third update module is configured to associate a new virtual switch with the virtual router, or delete a virtual switch associated with the virtual switch.

Regarding the apparatus in the foregoing embodiments, the specific manner in which each module executes operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

Based on the hardware implementation of the above program modules, and in order to implement the method of the embodiment of the present application, the embodiment of the present application also provides an electronic device. FIG. 12 is a structural diagram of an electronic device according to an exemplary embodiment, as shown in As shown in Figure 12, the electronic equipment includes:

Communication interface 1, which can exchange information with other devices such as network devices;

The processor 2 is connected to the communication interface 1 to realize information interaction with other devices, and is used to execute the load balancing method or the creation method of the load balancing system provided by the above one or more technical solutions when running the computer program. Instead, the computer program is stored on the memory 3 .

Of course, in actual application, various components in the electronic device are coupled together through the bus system 4 . It can be understood that the bus system 4 is used to realize connection and communication between these components. In addition to the data bus, the bus system 4 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the various buses are labeled as bus system 4 in FIG. 12 .

The memory 3 in the embodiment of the present application is used to store various types of data to support the operation of the electronic device. Examples of such data include: any computer program used to operate on an electronic device.

It can be understood that the memory 3 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memories. Among them, the non-volatile memory can be read-only memory (ROM, Read Only Memory), programmable read-only memory (PROM, Programmable Read-Only Memory), erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD, CD-ROM (CD-ROM, Compact Disc Read-Only Memory); magnetic surface storage can be disk storage or tape storage. The volatile memory may be Random Access Memory (RAM, Random Access Memory), which is used as an external cache. By way of illustration and not limitation, many forms of RAM are available such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory Memory (DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), Synchronous Connection Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory) . The memory 3 described in the embodiment of the present application is intended to include but not limited to these and any other suitable types of memory.

The methods disclosed in the foregoing embodiments of the present application may be applied to the processor 2 or implemented by the processor 2 . Processor 2 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 2 or instructions in the form of software. The aforementioned processor 2 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The processor 2 may implement or execute various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in the storage medium, and the storage medium is located in the memory 3, and the processor 2 reads the program in the memory 3, and completes the steps of the foregoing method in combination with its hardware.

When the processor 2 executes the program, the corresponding processes in the various methods of the embodiments of the present application are implemented, and details are not repeated here for the sake of brevity.

In an exemplary embodiment, the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a memory 3 storing a computer program, and the above-mentioned computer program can be executed by the processor 2, To complete the steps described in the aforementioned method. The computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, CD-ROM, or the like.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: various media that can store program codes such as removable storage devices, ROM, RAM, magnetic disks or optical disks.

Alternatively, if the above-mentioned integrated units of the present application are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for Make an electronic device (which may be a personal computer, server, network device, etc.) execute all or part of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media capable of storing program codes such as removable storage devices, ROM, RAM, magnetic disks or optical disks.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims (15)

1. A load balancing method is characterized in that the method is applied to a seven-layer load balancer in a load balancing system, the load balancing system comprises a virtual gateway, a virtual router associated with the virtual gateway, a plurality of virtual switches associated with the virtual router, the seven-layer load balancer associated with any one virtual switch, and a service pool associated with the seven-layer load balancer, each virtual switch forms a corresponding subnet, each subnet is respectively associated with a plurality of virtual servers, and the service pool comprises at least one virtual server associated with each subnet;

the method comprises the following steps:

receiving a request of a client, and determining a target virtual server in the service pool according to the request;

judging whether the subnet where the target virtual server is located is the same as the subnet associated with the seven-layer load balancer;

if not, sending the request to the target virtual server sequentially through the virtual switch associated with the seven-layer load balancer, the virtual router and the virtual switch corresponding to the subnet where the target virtual server is located, and receiving the response of the target virtual server to the request sequentially through the virtual switch corresponding to the subnet where the target virtual server is located, the virtual router and the virtual switch associated with the seven-layer load balancer;

returning the response to the client.

2. The load balancing method according to claim 1, wherein after determining whether the subnet where the target virtual server is located is the same as the subnet associated with the seven-layer load balancer, the method further comprises:

and if the subnet where the target virtual server is located is the same as the subnet associated with the seven-layer load balancer, sending the request to the target virtual server through the virtual switch associated with the seven-layer load balancer, and receiving the response of the target virtual server to the request through the virtual switch associated with the seven-layer load balancer.

3. The load balancing method according to claim 1, wherein the receiving a request from a client comprises:

receiving a request of a public network client through a virtual switch associated with the virtual gateway, the virtual router and the seven-layer load balancer in sequence;

correspondingly, returning the response to the client includes:

and returning the response to the public network client through the virtual switch, the virtual router and the virtual gateway which are associated with the seven-layer load balancer in sequence.

4. The load balancing method according to claim 1, wherein the receiving a request from a client comprises:

receiving a request of a subnet client in a target subnet;

correspondingly, returning the response to the client includes:

returning the response to the subnet client.

5. The load balancing method of claim 4, wherein the receiving a request from a subnet client in the target subnet comprises:

if the target subnet is the same as the subnet associated with the seven-layer load balancer, receiving a request of a subnet client in the target subnet through a virtual switch corresponding to the target subnet;

correspondingly, returning the response to the subnet client includes:

and returning the response to the subnet client through the virtual switch corresponding to the target subnet.

6. The load balancing method of claim 4, wherein the receiving a request from a subnet client in the target subnet comprises:

if the target subnet is different from the subnet associated with the seven-layer load balancer, the request of the subnet client in the target subnet is received sequentially through the virtual switch corresponding to the target subnet, the virtual router and the virtual switch associated with the seven-layer load balancer;

correspondingly, returning the response to the subnet client includes:

and returning the response to the subnet client through the virtual switch associated with the seven-layer load balancer, the virtual router and the virtual switch corresponding to the target subnet in sequence.

7. A method for creating a load balancing system, comprising:

creating a virtual router and a virtual gateway, and associating the virtual gateway to the virtual router; wherein the virtual gateway is configured to provide a floating IP address;

creating a plurality of virtual switches associated to the virtual router, each of the virtual switches forming a corresponding subnet;

creating a plurality of virtual server clusters comprising a plurality of virtual servers, setting an IP address of each virtual server, and respectively associating the virtual servers in each virtual server cluster to a corresponding virtual switch so as to add the virtual servers in each virtual server cluster to a subnet corresponding to the virtual switch;

creating a service pool, setting a port of the service pool, and associating at least one virtual server in each subnet to the service pool; the port of the service pool provides a port of real service for a virtual server in the service pool;

establishing a seven-layer load balancer based on a preset system mirror image containing the seven-layer load balancer, associating the seven-layer load balancer to any one of the virtual switches, and setting an IP address and a port of the seven-layer load balancer; the IP address of the seven-layer load balancer is in the range of the subnet corresponding to the associated virtual switch;

and associating the service pool to the seven-layer load balancer, and configuring the corresponding relation between the IP address of the virtual server in the service pool and the port of the service pool in the seven-layer load balancer.

8. The method for creating a load balancing system according to claim 7, wherein after associating the service pool to the seven-layer load balancer, further comprising:

unbinding the service pool associated with the seven-tier load balancer and associating a new service pool to the seven-tier load balancer.

9. The method for creating a load balancing system according to claim 7, wherein said associating at least one virtual server in each of said sub-networks to said service pool further comprises:

adding a new virtual server in the service pool;

or deleting the virtual server in the service pool.

10. The method for creating a load balancing system according to claim 7, wherein after creating the plurality of virtual switches associated with the virtual router, further comprising:

associating a new virtual switch to the virtual router;

or deleting the virtual switch associated with the virtual switch.

11. The load balancing device is characterized by being applied to a seven-layer load balancer in a load balancing system, wherein the load balancing system comprises a virtual gateway, a virtual router associated with the virtual gateway, a plurality of virtual switches associated with the virtual router, the seven-layer load balancer associated with any one virtual switch, and a service pool associated with the seven-layer load balancer, each virtual switch forms a corresponding subnet, each subnet is respectively associated with a plurality of virtual servers, and the service pool comprises at least one virtual server associated with each subnet;

the device comprises:

the determining module is used for receiving a request of a client and determining a target virtual server in the service pool according to the request;

the judging module is used for judging whether the subnet where the target virtual server is located is the same as the subnet associated with the seven-layer load balancer;

a first response module, configured to, when a subnet where the target virtual server is located is different from a subnet associated with the seven-layer load balancer, send the request to the target virtual server sequentially through the virtual switch associated with the seven-layer load balancer, the virtual router, and the virtual switch corresponding to the subnet where the target virtual server is located, and receive, by sequentially through the virtual switch corresponding to the subnet where the target virtual server is located, the virtual router, and the virtual switch associated with the seven-layer load balancer, a response of the target virtual server to the request;

and the return module is used for returning the response to the client.

12. An apparatus for creating a load balancing system, comprising:

a first creation module for creating a virtual router and a virtual gateway, associating the virtual gateway to the virtual router; wherein the virtual gateway is configured to provide a floating IP address;

a second creation module for creating a plurality of virtual switches associated to the virtual router, each virtual switch forming a corresponding subnet;

a third creating module, configured to create a plurality of virtual server clusters including a plurality of virtual servers, set an IP address of each virtual server, and associate a virtual server in each virtual server cluster with a corresponding virtual switch, respectively, so as to add the virtual server in each virtual server cluster into a subnet corresponding to the virtual switch;

a fourth creating module, configured to create a service pool, set a port of the service pool, and associate at least one virtual server in each subnet to the service pool; the port of the service pool provides a port of real service for a virtual server in the service pool;

a fifth creating module, configured to create a seven-layer load balancer based on a preset system image including the seven-layer load balancer, associate the seven-layer load balancer with any one of the virtual switches, and set an IP address and a port of the seven-layer load balancer; the IP address of the seven-layer load balancer is in the range of the subnet corresponding to the associated virtual switch;

and the association module is used for associating the service pool to the seven-layer load balancer, and configuring the corresponding relation between the IP address of the virtual server in the service pool and the port of the service pool in the seven-layer load balancer.

13. A load balancing system, comprising:

a virtual gateway connected to the public network;

a virtual router associated with the virtual gateway;

a plurality of virtual switches associated with the virtual router; each virtual switch forms a corresponding subnet, each subnet is respectively associated with a corresponding virtual server cluster, and each virtual server cluster comprises a plurality of virtual servers;

a seven-layer load balancer associated with any one of the virtual switches;

a service pool associated with the seven-tier load balancer; wherein the service pool comprises at least one virtual server associated with each subnet.

14. An electronic device, comprising:

a memory for storing a computer program;

a processor for implementing the steps of the load balancing method according to any one of claims 1 to 6 or the creation method of the load balancing system according to any one of claims 7 to 10 when executing the computer program.

15. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the load balancing method according to any one of claims 1 to 6 or the creating method of the load balancing system according to any one of claims 7 to 10.

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