CN108574727A - A kind of improved load balance scheduling system based on platform of soaring - Google Patents

A kind of improved load balance scheduling system based on platform of soaring Download PDF

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Publication number
CN108574727A
CN108574727A CN201810187595.4A CN201810187595A CN108574727A CN 108574727 A CN108574727 A CN 108574727A CN 201810187595 A CN201810187595 A CN 201810187595A CN 108574727 A CN108574727 A CN 108574727A
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Prior art keywords
module
weights
load
platform
real server
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Inventor
薛晋泽
魏立峰
张建锋
李志伟
李俊良
莫杨
王华功
董青
姚然
夏建乐
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Tianjin Kylin Information Technology Co Ltd
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Tianjin Kylin Information Technology Co Ltd
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Priority to CN201810187595.4A priority Critical patent/CN108574727A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/16Threshold monitoring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004Server selection for load balancing
    • H04L67/1008Server selection for load balancing based on parameters of servers, e.g. available memory or workload
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1001Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1029Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers using data related to the state of servers by a load balancer

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer And Data Communications (AREA)

Abstract

A kind of improved load balance scheduling system based on platform of soaring, including load balancing and several real server;The module run in the load balancing includes weighed value adjusting module, the first communication module and distribution of services module;The module run on the real server includes performance monitoring module, weight computing module, the second communication module and Service Processing Module;The performance monitoring module passes to the weight computing module, predicts subsequent performance number according to prediction algorithm, and do corresponding processing according to prediction case for obtaining the current status data of the corresponding real server.Compared to the prior art, the advantage of the application is:Weight computing is transferred to real server operation, the pressure of load balancing node can be reduced, improve the entirety ability of entire cluster;Using prediction algorithm estimated performance variation tendency, achieve the purpose that fastest response burst flow.

Description

A kind of improved load balance scheduling system based on platform of soaring
Technical field
The invention belongs to load-balancing technique fields, specifically, being related to a kind of improved load based on platform of soaring Balance dispatching system.
Background technology
Load-balancing technique is as network is more and more universal, and the visit capacity of various services is increasing, single server It is difficult to meet a kind of technology being born when the performance requirement of various applications.In application deployment, it will apply while be deployed to On several servers, as back-end server, a server is disposed, configuration load is balanced, and configuration Virtual Service is as application Same entrance, load balancing receive user request after, according to the established rule of configuration, forward a request to back-end services Device processing, returns to user after the completion.The advantages of this deployment be can dynamic the performance of cluster is shunk and is extended with Requirements for access is adapted to, is ensured cost-effective while service quality.
Load balance scheduling algorithm refers to the rule followed when load balancing forwarding user's request, and rudimentary algorithm is main Including poll, weighted polling, minimum connection, the minimum connection of weighting, Locality-Based Least Connections Scheduling, tape copy based on part Property at least link, the scheduling of destination address hash, Source Hashing Scheduling etc..Followed by dynamic dispatching algorithm best suits reality The algorithm of border demand is dynamical feedback dispatching algorithm.Common dynamical feedback dispatching algorithm is all a certain weighted scheduling algorithm Extend, according to the currently used situation of real server, calculate suitable weight, the power of real server is then set dynamically Value, to achieve the purpose that all real server performances of dynamic equilibrium.In simple terms, when the utilization rate of real server is relatively low When, weights are turned up and turn down weights when the utilization rate of real server is higher.
Dynamical feedback dispatching algorithm, mainly use in the industry there are two types of, the dynamical feedback dispatching algorithm based on weighted polling And all it is load balancing node periodically from real server with the dynamical feedback dispatching algorithm based on weighting Smallest connection Performance information is obtained, the weights of every real server are calculated on load balancing node, are then calculated.
In service deployment, application load balancing node generally only one (have sometimes more load balancing with Multilayered structure is disposed, or is disposed with active-standby mode, but synchronization, and the interface that same application externally shows generally all only has one It is a), and real server quantity can be with dynamic expansion, load balancing node calculates the realization side of the weights of all nodes Method can reduce cluster entirety ability.
During service operation, be frequently encountered in very short time flow outburst (integral point of such as shopping website is rushed to purchase, Or when the website orientations grave news such as news or blog), the true clothes of traditional dynamical feedback dispatching algorithm periodically update The weights of business device are unable to cope with such case, may encounter flow outburst just at the interval for adjusting weights twice, cause The task that server is connected to directly exceeds the ability upper limit of the server, and crash is directly resulted in when serious.
Chinese invention patent " a kind of Multimachine hot standby load balance system for computer " (application number CN201110376687.5), The invention provides a kind of Multimachine hot standby load balance system for computer, and system realizes multiple load balance process using trunking The aggregation of links of module, multiple load balance process modular units are integrated into the single entrance of rear end by single IP module, adjacent Load balance process module realizes master control backup, and cyclic annular active and standby ring is integrally formed, is detected at load balancing by heartbeat detection Module status is managed, when wherein load balance process module have failed, adjacent load balance process module takes over this Business, and application server load state is monitored in real time, asking from client is distributed automatically according to set scheduling mode It asks, automatic shield falls the failure of server in server pools, and realization business is not interrupted and High Availabitity, makes full use of system resource, Maximum plays the performance of blade server.But the invention is not related to weight computing and is transferred to asking for background server Topic is not involved with the problem of preventing burst flow in advance, is also not involved with platform of soaring.
Chinese invention patent " method, apparatus and system of load balancing " (application number CN201010268922.2), the hair It is bright to disclose a kind of method, apparatus and system of load balancing, the method includes:Obtain the ARP request that client is sent;Choosing The load equalizer node for meeting in load equalizer cluster and presetting loading condition is taken, and obtains the satisfaction and presets loading condition Load equalizer node MAC Address;Arp reply information is sent to the client, the arp reply information includes institute The MAC Address for meeting the load equalizer node for presetting loading condition is stated, so that the client receives the arp reply letter Service request is sent on the load equalizer node for meeting default loading condition after breath and carries out equilibrium treatment.The present invention The ARP request sent by obtaining client, and be that the load that client selects satisfaction to preset loading condition is equal according to ARP request Weighing apparatus node carries out traffic balancing processing, realizes effective management to load equalizer cluster, improves load equalizer collection The whole equilibrium treatment effect of group.But the invention is not related to the problem of Dynamic Weights calculate, is not involved in advance The problem of preventing burst flow, is also not involved with platform of soaring.
Chinese invention patent " a kind of load-balancing method and device " (application number CN201210111056.5), the invention A kind of load-balancing method of embodiment offer and device, are related to the communications field, can assess the quality of each load balancing, To which different loads balance policy be adaptive selected to adapt to different scenes, the adaptability of load balancing is enhanced.Its side Method is:The first load balancing of highest priority is chosen in the policy library including at least two load balancings with reality Apply load balancing;The equalization efficiency, of first load balancing is obtained after executing first load balancing Weigh cost;Load balancing plan in the policy library is adjusted according to the equalization efficiency of first load balancing and balanced cost Priority slightly, so that when implementing load balancing next time according at least two load balancing after adjustment Priority chooses the balance policy of highest priority.The embodiment of the present invention when executing load balancing for adaptively adjusting load Balance policy.But the invention is not related to the problem of Dynamic Weights calculate, is not involved with and prevents burst flow in advance The problem of, also it is not involved with platform of soaring.
Invention content
In view of this, the present invention provides a kind of flat based on soaring to solve defect and deficiency of the existing technology Weight computing is transferred to real server operation, can reduce load balancing section by the improved load balance scheduling system of platform The pressure of point, improves the entirety ability of entire cluster.
In order to solve the above-mentioned technical problem, the invention discloses a kind of improved load balance schedulings based on platform of soaring System, and realized using following technical scheme.
A kind of improved load balance scheduling system based on platform of soaring, including load balancing and several real services Device, the load balancing are communicated to connect with several real server respectively;The module run in the load balancing includes Weighed value adjusting module, the first communication module and distribution of services module;The module run on the real server includes performance prison Control module, weight computing module, the second communication module and Service Processing Module;First communication module respectively with it is several described Second communication module communicates to connect;The distribution of services module is communicated to connect with several Service Processing Modules respectively;
The performance monitoring module passes to described for obtaining the current status data of the corresponding real server Weight computing module;The weight computing module calculates the weights that the real server adapts to according to default computation rule, The weights are passed into the load balancing by communication module;How the weighed value adjusting module decision adjusts weights, and Execute weighed value adjusting order.
Further, the performance monitoring module is additionally operable to predict subsequent performance number according to prediction algorithm, and according to pre- It surveys situation and does corresponding processing.
Further, predetermined threshold value in the performance monitoring module;If the performance number of prediction exceeds the threshold Value, the performance monitoring module temporary quickening monitoring frequency automatically;When performance number is no more than the threshold value, the performance Monitoring module adjust automatically monitoring frequency is to normal frequency.
Further, the performance monitoring module predicts subsequent performance number using single exponential smoothing predicted method.
Further, the smoothing constant of the single exponential smoothing predicted method selects 0.5.
Further, the load weight computing formula of the weight computing module is LOADi=0.3*Ci+0.1*Di+ 0.2*Mi+0.1*Pi+0.3*Ri;The Ci is server current CPU load, and the Di is server when front disk uses feelings Condition, the Mi are current memory utilization power, and the Pi is current process number, and the Ri is the load balancing to corresponding The response time of the real server, the LOADi are load weights.
Further, when presently described load weights are not equal to 0.80, dynamic adjusts weights;When the load weights are equal to When 0.80, weights remain unchanged.
Further, the rule of dynamic adjustment weights is:When the load weights are less than 0.80, new weights are more than original There are weights;When the load weights are more than 0.80, new weights are less than original weights.
Compared with prior art, the present invention can be obtained including following technique effect:
1) weight computing module is placed in real server by the present invention, is different from current usually calculated at load balancing end and is weighed The method of value can reduce the performance loss at load balancing end, to improve the UPS upper performance score that entire cluster can provide;
2) present invention uses prediction algorithm at real server end, the performance change trend of real server is predicted, when certain When the value of performance prediction next time of component is more than preset performance threshold, accelerate the frequency of performance monitoring, to reach most fast sound Answer the purpose of burst flow.It is automatically lowered to normal frequency after predicted value is normal, clustering performance will not be influenced too much;
3) present invention is applied to production domesticization and soars platform, can expand production domesticization and soar the application range of platform.
Certainly, implementing any of the products of the present invention must be not necessarily required to reach all the above technique effect simultaneously.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and constitutes the part of the present invention, this hair Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings:
Fig. 1 is the deployment schematic diagram of one embodiment of the invention.
Fig. 2 is the system architecture schematic diagram of one embodiment of the invention.
Specific implementation mode
Carry out the embodiment that the present invention will be described in detail below in conjunction with accompanying drawings and embodiments, thereby how the present invention is applied Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
Fig. 1 show the deployment schematic diagram of the present invention, and client computer is connect by internet with a load balancing, and one negative Carrying balanced three real server of connection, (namely background server, the present embodiment select three, can also according to actual conditions It is other quantity).Load balancing is based on platform of soaring, and access interface is externally provided in a manner of Virtual Service.The use of client computer After family request reaches load balancing by internet, load balancing is selected a real server, will be accessed according to forward rule Request is transmitted to the real server and result is returned to user by load balancing after real server processing request.
Fig. 2 show the system architecture schematic diagram of the present invention, and weighed value adjusting module, the first communication mould are run in load balancing Block and distribution of services module;Runnability monitoring module, weight computing module, the second communication module and business on real server Processing module.First and second communication modules are mainly used to the performance information in conveying flow implementation procedure and weighed value adjusting letter Breath.Performance monitoring module periodically obtains the current status data of server, passes to weight computing module.Weight computing mould Root tuber calculates the weights of current server adaptation, weights is passed to load balancing by communication module according to rule.Weights tune How the decision of mould preparation block adjusts weights, and executes weighed value adjusting order.
Performance monitoring module runs on real server, for obtaining the current performance data of server with certain frequency, It is supplied to weight computing module to calculate integrated load value.In the present invention, performance monitoring module can be predicted follow-up with prediction algorithm Performance data value.If threshold value of the predicted performance values beyond setting, performance monitoring module automatically can temporarily accelerate monitoring frequency Rate prevents burst flow from leading to system in case of system halt.When estimated performance returns normal, meeting adjust automatically monitoring frequency is normal frequency.
In this example, estimated performance value next time, the calculating of the algorithm are calculated using single exponential smoothing predicted method Formula is as follows:
St+1=a*yt+(1-a)St
Wherein, St+1For the predicted value of next period, ytFor the actual value of the monitoring of current period, StFor the predicted value of current period, a is smooth Constant.The value of smoothing constant determines the influence degree that the actual value of monitoring at a specified future date predicts the next period.When a is 1, St+1=yt, Next period predicted value is equal to current period monitoring value;When a is 0, St+1=St, next period predicted value is equal to current period predicted value, and the current period is predicted Value is that the calculated with actual values based on long term monitoring comes out.Because the variation to performance in this example, is needed to respond faster, So selecting larger smoothing constant 0.5 herein.
In the present embodiment, the default frequency of performance monitoring is that 5s is primary, is more than default threshold predicting next period predicted value When value, it is primary that monitoring frequency is revised as 1s, when monitoring value is more than threshold value, load balancing can make a response in 1s, It, will if predicted value and actual monitored value are all not above predetermined threshold value in two default frequency interval time sections (i.e. 10s) Frequency drops back to default frequency, when predicting the value more than predetermined threshold value again, can reset this time.
Weight computing module is located at real server, for calculating weights.In the present embodiment, it is primarily upon following property It can parameter:Server current CPU load Ci, server are as front disk service condition Di, current memory utilization power Mi and currently The response time Ri of number of processes Pi and load balancing to real server.First, one group of configurable coefficient is set, is represented The summation of the significance level of each performance components of real server, coefficient is 1, corresponds to above-mentioned performance parameter in the present embodiment, is arranged For { 0.3,0.1,0.2,0.1,0.3 }.Integrated load is calculated by the following formula to obtain:
LOADi=0.3*Ci+0.1*Di+0.2*Mi+0.1*Pi+0.3*Ri
Weight computing formula is as follows, and A is an adjustable coefficient, and the amplitude of control adjustment weights, 0.80 is default Anticipation system availability., can be according to present load when present load is not equal to 0.80, dynamic adjusts weights, according to following public affairs Formula, when LOADi is less than 0.80, new weights can be more than original weights, and when LOADi is more than 0.80, new weights can be less than Original weights, when LOADi is equal to 0.80, weights remain unchanged, and so that real server is run on desired load always best State.
Communication module uses simple POST modes transmission data, real server that the value information changed will be needed to transmit To load balancing, load balancing transmits the parameter that the performance monitoring module of Administrator and the operation of weight computing module need To real server.
Weighed value adjusting module runs on load balancing end, the real server integrated load for being used for being obtained according to communication module It is worth, and the anticipation system availability being arranged, determines the weights for increasing or reducing the real server, and run system command, repair Change weights.
The beneficial effects of the invention are as follows:
1) weight computing module is placed in real server by the present invention, is different from current usually calculated at load balancing end and is weighed The method of value can reduce the performance loss at load balancing end, to improve the UPS upper performance score that entire cluster can provide;
2) present invention uses prediction algorithm at real server end, the performance change trend of real server is predicted, when certain When the value of performance prediction next time of component is more than preset performance threshold, accelerate the frequency of performance monitoring, to reach most fast sound Answer the purpose of burst flow.It is automatically lowered to normal frequency after predicted value is normal, clustering performance will not be influenced too much;
3) present invention is applied to production domesticization and soars platform, can expand production domesticization and soar the application range of platform.
It is provided for the embodiments of the invention a kind of improved load balance scheduling system based on platform of soaring above, into It has gone and has been discussed in detail.The explanation of above example is only intended to facilitate the understanding of the method and its core concept of the invention;Meanwhile it is right In those of ordinary skill in the art, according to the thought of the present invention, change is had in specific embodiments and applications Place, in conclusion the content of the present specification should not be construed as limiting the invention.
Some vocabulary has such as been used to censure specific components or module in specification and claim.Art technology Personnel are, it is to be appreciated that different institutions may call the same component or module with different nouns.This specification and right are wanted In a manner of asking the difference not by title to be used as differentiation component, but area is used as with the difference of component or module functionally The criterion divided.As being open language, therefore should solve in specification in the whole text and claim "comprising", " comprising " mentioned in It is interpreted into " including but not limited to "." substantially " refer in receivable error range, those skilled in the art can be certain The technical problem is solved in error range, basically reaches the technique effect.Specification subsequent descriptions are to implement the present invention's Better embodiment, so description is being not limited to the model of the present invention for the purpose of the rule for illustrating the present invention It encloses.Protection scope of the present invention is when subject to appended claims institute defender.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability Including so that commodity or system including a series of elements include not only those elements, but also include not clear The other element listed, or further include for this commodity or the intrinsic element of system.In the feelings not limited more Under condition, the element that is limited by sentence "including a ...", it is not excluded that including the element commodity or system in also There are other identical elements.
Several preferred embodiments of the present invention have shown and described in above description, but as previously described, it should be understood that the present invention Be not limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations, Modification and environment, and can in innovation and creation contemplated scope described herein, by the technology of above-mentioned introduction or related field or Knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be In the protection domain of appended claims of the present invention.

Claims (8)

1. a kind of improved load balance scheduling system based on platform of soaring, including load balancing and several real server, The load balancing is communicated to connect with several real server respectively;The module run in the load balancing includes weights Adjust module, the first communication module and distribution of services module;The module run on the real server includes performance monitoring mould Block, weight computing module, the second communication module and Service Processing Module;First communication module is respectively with several described second Communication module communicates to connect;The distribution of services module is communicated to connect with several Service Processing Modules respectively;
The performance monitoring module passes to the weights for obtaining the current status data of the corresponding real server Computing module;The weight computing module calculates the weights that the real server adapts to according to default computation rule, by institute It states weights and the load balancing is passed to by communication module;How the weighed value adjusting module decision adjusts weights, and executes Weighed value adjusting order.
2. the improved load balance scheduling system based on platform of soaring according to claim 1, it is characterised in that:The property Energy monitoring module is additionally operable to predict subsequent performance number according to prediction algorithm, and does corresponding processing according to prediction case.
3. the improved load balance scheduling system based on platform of soaring according to claim 2, it is characterised in that:The property Predetermined threshold value in energy monitoring module;If the performance number of prediction exceeds the threshold value, the performance monitoring module is automatically temporary The quickening monitoring frequency of when property;When performance number is no more than the threshold value, the performance monitoring module adjust automatically monitoring frequency To normal frequency.
4. according to the improved load balance scheduling system based on platform of soaring described in Claims 2 or 3, it is characterised in that:Institute It states performance monitoring module and subsequent performance number is predicted using single exponential smoothing predicted method.
5. the improved load balance scheduling system based on platform of soaring according to claim 4, it is characterised in that:Described one The smoothing constant of secondary index smoothing forecasting method selects 0.5.
6. the improved load balance scheduling system based on platform of soaring according to claim 1, it is characterised in that:The power The load weight computing formula for being worth computing module is LOADi=0.3*Ci+0.1*Di+0.2*Mi+0.1*Pi+0.3*Ri;It is described Ci is server current CPU load, and the Di is that server works as front disk service condition, and the Mi is that current memory utilizes feelings Condition, the Pi are current process number, and the Ri is response time of the load balancing to the corresponding real server, The LOADi is load weights.
7. the improved load balance scheduling system based on platform of soaring according to claim 1 or 6, it is characterised in that:When When the preceding load weights are not equal to 0.80, dynamic adjusts weights;When the load weights are equal to 0.80, weights are kept not Become.
8. the improved load balance scheduling system based on platform of soaring according to claim 7, it is characterised in that:Dynamic is adjusted The rule of whole weights is:When the load weights are less than 0.80, new weights are more than original weights;When the load weights are big When 0.80, new weights are less than original weights.
CN201810187595.4A 2018-03-07 2018-03-07 A kind of improved load balance scheduling system based on platform of soaring Pending CN108574727A (en)

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