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Load balancing method, apparatus and system

A load balancing and load balancer technology, applied in the IT field, can solve the problem that back-end servers and load balancers cannot be deployed across network segments, and achieve the effect of ensuring network performance

Active Publication Date: 2017-05-17
HUAWEI CLOUD COMPUTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a load balancing method, device and system to solve the problem that the backend server and the load balancer cannot be deployed across network segments in the DR mode of the cloud computing network

Method used

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  • Load balancing method, apparatus and system
  • Load balancing method, apparatus and system
  • Load balancing method, apparatus and system

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Embodiment Construction

[0051] The application will be further described below in conjunction with the accompanying drawings.

[0052] Such as figure 1 As shown, it is a schematic structural diagram of a load balancing system provided by an embodiment of the present invention. The monitoring system includes a client 11, a load balancing node 2 and a service node 3, and a first virtual router 21 runs on the load balancing node 2. And the load balancer 22, the second virtual router 31, at least one backend server 32 ( figure 1 Take a back-end server as an example) and virtual switch 33. In the load balancing system, there may be multiple clients 11, load balancing nodes 2, and service nodes 3, wherein multiple service nodes 3 form a server resource pool to provide services for the client 11. Optionally, load balancing Node 2 may be deployed in a distributed manner, which is not limited in this embodiment of the present invention. The client 11, the load balancing node 2 and the service node 3 commun...

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PUM

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Abstract

The invention relates to a load balancing system, a load balancing method and a service node, aiming at realizing network-segment-crossing disposition of a back end server and a load equalizer in a DR mode in a cloud computing network. The load balancing system includes a load equalizer and at least one service node, wherein the a virtual switch and at least one back end server are run on the server node; the IP address of a logic interface of the back end server is the IP address of the load equalizer; the load equalizer receives an access request of a client, and modifies the destination address of the access request into the IP address of a virtual network interface card of a destination back end server; and when the virtual switch of the service node receives the access request, the destination address of the access request is modified into the IP address of the load equalizer, so that when the destination back end server returns the access response, the source address of the access response is the address of the load equalizer.

Description

technical field [0001] The present application relates to the field of IT technology, in particular to a load balancing method, device and system. Background technique [0002] The load balancing system includes a load balancer and multiple back-end servers. The multiple back-end servers (also known as members) form a server resource pool. The load balancer receives access requests from clients and selects and provides The backend server for the service. The IP address of the load balancer is the IP address presented by the server resource pool to the outside. The client can access the backend server in the server resource pool through the IP address of the load balancer without knowing the address of the backend server. The modes in which the load balancer provides load balancing services include a direct routing (DirectRouting, DR) mode and a network address translation (Network Address Translation, NAT) mode. [0003] When the DR mode is used, the access response return...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L45/74
CPCH04L67/1004H04L67/1023H04L67/63H04L61/2514H04L61/2521H04L67/1001H04L45/745H04L61/2503
Inventor 罗高威周坤鹏
Owner HUAWEI CLOUD COMPUTING TECH CO LTD
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