CN104168326A - Server load balancing method and system - Google Patents
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- CN104168326A CN104168326A CN201410425909.1A CN201410425909A CN104168326A CN 104168326 A CN104168326 A CN 104168326A CN 201410425909 A CN201410425909 A CN 201410425909A CN 104168326 A CN104168326 A CN 104168326A
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Abstract
The invention provides a server load balancing method and system. The method includes the steps that heartbeat packets are sent to a database periodically by a server; each heartbeat packet comprises IP information and load information of the server; a state information table is built in the database, and the load information of the server is written into the corresponding positions of the state information table according to the IP information, in the received heartbeat packets, of the server; a balancer obtains the state information table periodically, statistical analysis is conducted on data information of the state information table, and the result obtained through statistical analysis is stored into the database; a client sends a request for the IP address of the server to the balancer, and the balancer selects the IP address of the corresponding server according to the preset working mode and returns the IP address to the client. By means of the method, the problems that in the prior art, a client of an MIDAS can only be connected to a designated server according to the preset set, unreasonable server load allocation occurs easily, and the overall operation effect of the system is affected are solved.
Description
Technical field
The present invention relates to network application technical field, specifically be a kind of method and system of server equally loaded.
Background technology
What in existing MIDAS system, client connected application server employing is substantially all active connected mode, in client, must first set the application server address that will connect.Realize the load balancing of application server by distributing at the beginning application server that each client connects.Because client is to carry out connection server according to the server address of setting, therefore may cause following problem: 1, part client operation flocks together and is connected to a certain application server, and other application servers due to client off-duty at leisure; 2,, when crashing appears in a certain application server, the client being connected on this server cannot normally be moved; 3, increase when client and will first assess current all connections, very loaded down with trivial details of the application server setting that will connect it like this; If 4, thinking to apply fully upper this server in the time adding new application server need to set all clients again.Therefore, be necessary to provide a kind of application server that can will connect according to the distribution client of the real-time loading condition equilibrium of application server, to realize the method and system of equally loaded of application server.
Summary of the invention
Technical problem to be solved by this invention is: the method and system that a kind of server equally loaded is provided, especially a kind of method and system of the server equally loaded based on MIDAS system, the client that solves prior art MIDAS system can only connect the server of specifying according to presetting, easily cause server load unreasonable distribution, affect the problem of entire system operational effect.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A method for server equally loaded, comprising:
Server periodically sends heartbeat packet to database; Described heartbeat packet comprises the IP information of described server and the load information of described server;
Database state information table, according to the IP information of server described in the heartbeat packet receiving by the correspondence position of the load information write state information table of described server;
Equalizer periodically obtains described state information table, the data message of state information table is carried out to statistical analysis, and deposit statistic analysis result in database;
Client is to the IP address of equalizer request server;
Equalizer selects the IP address of corresponding server to be back to client according to default mode of operation.
Another technical scheme provided by the invention is:
A system for server equally loaded, comprising: server, database, equalizer and client; Described server comprises sending module, and described sending module is connected with equalizer by database, and described client connects equalizer; Described equalizer comprises acquisition module, statistical module and selection module, and described acquisition module is connected with described database respectively with statistical module, and described selection module is connected with described database and described client respectively;
Described sending module, periodically sends heartbeat packet to database for server; Described heartbeat packet comprises the IP information of described server and the load information of described server;
Described database, for setting up state information table, according to the IP information of server described in the heartbeat packet receiving by the correspondence position of the load information write state information table of described server;
Described acquisition module, periodically obtains described state information table for equalizer;
Described statistical module, carries out statistical analysis for equalizer to the data message of state information table, and deposits statistic analysis result in database;
Described client, for the IP address to equalizer request server;
Described selection module, selects the IP address of corresponding server to be back to client for equalizer according to default mode of operation.
Beneficial effect of the present invention is: the loading condition that is different from prior art and does not consider server, the server that the direct connection of client sets in advance, may cause certain server overload, and the phenomenon of the unreasonable distribution of certain server in idle condition.The invention provides a kind of method and system of server equally loaded, periodically send with the heartbeat packet of self load information and carry out statistical analysis to database by server, can understand in real time the residing operating state of each server and loading condition; By client when the needs connection server, the information that sends request is to equalizer, equalizer selects corresponding suitable server ip address to return from the statistics of database according to default mode of operation, connect for client, realize taking the busy state of server real work as basis, reasonably distribute the quantity of connected client, accomplish the server load balancing of system, particularly the server equally loaded based on MIDAS system.
Brief description of the drawings
Fig. 1 is the flow chart of the method for a kind of server equally loaded of one embodiment of the invention;
Fig. 2 is the system employs of a kind of server equally loaded of one embodiment of the invention basic structure block diagram in the time of Midas framework;
Fig. 3 is the basic structure block diagram of the system of a kind of server equally loaded of one embodiment of the invention;
Fig. 4 is the concrete structure block diagram of the system of a kind of server equally loaded of one embodiment of the invention;
Fig. 5 is the processing flow graph of the heartbeat packet information of the method and system of a kind of server equally loaded of one embodiment of the invention;
Fig. 6 is the information flow direction figure of the method and system of a kind of server equally loaded of one embodiment of the invention;
Fig. 7 is the flow chart of the method for a kind of server equally loaded of one embodiment of the invention while being used in Midas server;
Fig. 8 is the block diagram of the user interface of the method and system of a kind of server equally loaded of one embodiment of the invention.
Label declaration:
1, database; 2, server; 3, client; 4, equalizer;
5, acquisition module; 6, statistical module; 7, select module; 8, memory module;
9, local thesaurus; 10, presetting module; 11, update module; 12, display module; 13, sending module.
Embodiment
By describing technology contents of the present invention in detail, being realized object and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained.
The design of most critical of the present invention is: equalizer selects corresponding server ip address to connect for client according to default mode of operation in the time of client-requested connection server, the state concrete according to server reasonably distributes, and realizes the equilibrium of system server load.
Please refer to Fig. 1 to Fig. 8, the method for a kind of server equally loaded provided by the invention, comprising:
Step S1: server 2 periodically sends heartbeat packet to database 1; Described heartbeat packet comprises the IP information of described server 2 and the load information of described server 2;
Step S2: database 1 is set up state information table, according to the IP information of server 2 described in the heartbeat packet receiving by the correspondence position of the load information write state information table of described server 2;
Step S3: equalizer 4 periodically obtains described state information table, the data message of state information table is carried out to statistical analysis, and deposit statistic analysis result in database 1;
Step S4: client 3 is to the IP address of equalizer 4 request servers 2;
Step S5: equalizer 4 selects the IP address of corresponding server 2 to be back to client 3 according to default mode of operation.
From foregoing description, beneficial effect of the present invention is: the present invention is periodically sent and recorded the IP information of server 2 and the heartbeat packet of load information to database 1 by server 2, database 1, by corresponding the related data of heartbeat packet write state information table, so just can be grasped by state information table in database 1 load information of each server 2; Periodically from database 1, obtain state information table, and carry out statistical analysis by equalizer 4, just can obtain the loading condition that each server 2 obtains through statistical analysis, as the reference frame of reasonable distribution client 3; And equalizer 4 selects corresponding server 2 and client 3 to connect according to default mode of operation, can realize and select neatly according to actual needs suitable mode of operation to set, setting post-equalizer 4 connects the mode of operation distribution server IP address according to setting for client 3, and be not limited to a kind of fixing method of salary distribution, the demand of more realistic utilization.
The method of server equally loaded of the present invention is specially adapted to MIDAS system, in the present invention all to be applied in MIDAS system as example.
It should be noted that, obtain in state information table and carry out statistical analysis process at equalizer 4 and comprise, equalizer 4 will be stored described state information table, preserve server info structure in chained list mode, concrete structure comprise the state of server ip address, server sequence number, server priority and the server 2 corresponding with IP address, not response time, weight/maximum number of connections, client 3 linking numbers, point to next (client 3) record and keep linkage flag.
Further, equalizer 4 provides following one or more " mode of operation " for default: ordered mode, ratio mode, priority mode and minimum connection mode;
In the time that described equalizer 4 is ordered mode, equalizer 4 order from described state information table is chosen the IP address of server 2 and is returned;
In the time that described equalizer 4 is ratio mode, equalizer 4, according to the load weight of server 2 in described statistic analysis result, returns with the IP address of choosing server 2 from large extremely little order;
In the time that described equalizer 4 is priority mode, equalizer 4, according to the default priority of server 2 in described state information table, returns with the IP that chooses server 2 from height to low order;
In the time that described equalizer 4 is minimum connection mode, equalizer 4 is according to the quantity of the client 3 that in described state information table, server 2 connects, and the IP that chooses server 2 with order from less to more returns.
Seen from the above description, equalizer 4 of the present invention can provide above wherein a kind of mode of operation, two kinds of mode of operations wherein according to concrete working condition, provide four kinds of mode of operations to select flexibly for staff even simultaneously, staff can set according to the real work situation of MIDAS system, to configure best server allocation scheme, the response speed that the server 2 of MIDAS system is executed the task is faster, operating efficiency is higher, plays the object of reasonably utilizing server resource.
Further, after described " equalizer 4 periodically obtains described state information table; the data message of state information table is carried out to statistical analysis, and deposit statistic analysis result in database 1 ", also comprise that described database 1 is saved to statistic analysis result and state information table the step of local thesaurus 9;
When client 3 is during to the IP address of equalizer 4 request servers 2, described equalizer 4 selects the IP address of corresponding server 2 to be back to client 3 from local thesaurus 9 according to default mode of operation.
Further, also comprise that timing upgrades and record the connection status of server 2, the relevant information that is abnormal server 2 by connection status is sent to the step of database 1.
Seen from the above description, equalizer 4 will periodically upgrade and record the connection status of server 2, and the information of server abnormal operating state 2 is sent to database 1, so that database 1 carries out mark in time in state table, the server 2 of fixing a breakdown is connected into the possibility that client 3 causes client 3 to work.Realize the accurately running status of monitoring multiple servers 2, promote the service behaviour of MIDAS entire system.
Further, also comprise by user interface and show the state of described equalizer 4, statistics, server list, the server detail of server zone and the step of described equalizer 4 mode of operation of living in being modified by user interface;
The state of described equalizer 4 comprises the residing mode of operation of described equalizer 4, server count quantitative statistics, saturation coefficient;
The statistics of described server zone comprises server deadlock number of times statistics, busy condition number and restarts number of times;
Described server list comprises the quantity of the client 3 connecting in IP address information, the residing operating state of server 2 and the corresponding server 2 of server 2 correspondences;
Described server detail comprises IP address information, the status of given server 2, client 3 quantity and the load weight of not response time, connection.
Seen from the above description, can understand in real time the residing status attribute of equalizer 4, the status attribute of server zone, the details that server list information and server are concrete by user interface.Concrete, what described saturation coefficient embodied is the overall load situation of current Servers-all 2, only effective under ratio mode, the client more than 3 of connection server 2, and numerical value is larger; Provide to the editing of above-mentioned status attribute, so that staff arranges and edits according to the practical operation situation of system simultaneously.The transparence of system running can make staff better grasp system flow, at server 2, the connection attribute of client 3 occurs to switch timely while connecting fault, the MIDAS system that ensures Multi-layers distributing application server 2 all can be moved smoothly 3 layers of 1 layer of database, 2 layers of application servers and clients.
Refer to Fig. 2 to Fig. 4, the present invention also provides another technical scheme, and a kind of system of server equally loaded, comprising: server 2, database 1, equalizer 4 and client 3; Described server 2 comprises sending module 13, and described sending module 13 is connected with equalizer 4 by database 1, and described client 3 connects equalizer 4; Described equalizer 4 comprises acquisition module 5, statistical module 6 and selection module 7, and described acquisition module 5 is connected with described database 1 respectively with statistical module 6, and described selection module 7 is connected with described database 1 and described client 3 respectively;
Described sending module 13, periodically sends heartbeat packet to database 1 for server 2; Described heartbeat packet comprises the IP information of described server 2 and the load information of described server 2;
Described database 1, for setting up state information table, according to the IP information of server 2 described in the heartbeat packet receiving by the correspondence position of the load information write state information table of described server 2;
Described acquisition module 5, periodically obtains described state information table for equalizer 4;
Described statistical module 6, carries out statistical analysis for equalizer 4 to the data message of state information table, and deposits statistic analysis result in database 1;
Described client 3, for the IP address to equalizer 4 request servers 2;
Described selection module 7, selects the IP address of corresponding server 2 to be back to client 3 for equalizer 4 according to default mode of operation.
From foregoing description, beneficial effect of the present invention is: the sending module 13 of server 2 of the present invention periodically sends and records the IP information of server 2 and the heartbeat packet of load information to database 1, database 1, by corresponding the related data of heartbeat packet write state information table, so just can be grasped by state information table in database 1 load information of each server 2; Acquisition module 5 by equalizer 4 periodically obtains state information table, and carries out statistical analysis by module at the same level from database 1, just can obtain the loading condition that each server 2 obtains through statistical analysis, as the reference frame of reasonable distribution client 3; And equalizer 4 selects corresponding server 2 and client 3 to connect according to default mode of operation, can realize and select neatly according to actual needs suitable mode of operation to set, setting post-equalizer 4 connects the mode of operation distribution server IP address according to setting for client 3, and be not limited to a kind of fixing method of salary distribution, the demand of more realistic utilization.
Further, described equalizer 4 also comprises presetting module 10;
Described presetting module 10, for the default operational module of equalizer 4, described mode of operation comprises ordered mode, ratio mode, priority mode and minimum connection mode, described presetting module 10 is connected with selecting module 7;
In the time that described equalizer 4 is ordered mode, equalizer 4 order from described state information table is chosen the IP address of server 2 and is returned;
In the time that described equalizer 4 is ratio mode, equalizer 4, according to the load weight of server 2 in described state information table, returns with the IP address of choosing server 2 from large extremely little order;
In the time that described equalizer 4 is priority mode, equalizer 4, according to the default priority of server 2 in described state information table, returns with the IP that chooses server 2 from height to low order;
In the time that described equalizer 4 is minimum connection mode, equalizer 4 is according to the quantity of the client 3 that in described state information table, server 2 connects, and the IP that chooses server 2 with order from less to more returns.
Further, also comprise local thesaurus 9 modules, described database 1 comprises memory module 8, and described memory module 8 is connected with described statistical module 6 and local thesaurus 9 respectively; The selection module 7 of described equalizer 4 is connected with local thesaurus 9;
Described memory module 8, is saved to local thesaurus 9 for described database 1 by statistic analysis result and state information table;
Described selection module 7, also for when client 3 is during to the IP address of equalizer 4 request servers 2, described equalizer 4 selects the IP address of corresponding server 2 to be back to client 3 from local thesaurus 9 according to default mode of operation.
Further, described equalizer 4 also comprises update module 11, and described update module 11 is connected with described server 2 and database 1 respectively;
Described update module 11, upgrades and records the connection status of server 2 for timing, and the relevant information that is abnormal server 2 by connection status is sent to database 1.
Further, described equalizer 4 also comprises display module 12;
Described display module 12, for show by user interface described equalizer 4 state, server zone statistics, server list, server detail and by user interface, described equalizer 4 mode of operation of living in is modified;
The state of described equalizer 4 comprises the residing mode of operation of described equalizer 4, server count quantitative statistics, saturation coefficient;
The statistics of described server zone comprises server 2 deadlock number of times statistics, busy condition number and restarts number of times;
Described server list comprises the quantity of the client 3 connecting in IP address information, the residing operating state of server 2 and the corresponding server of server 2 correspondences;
Described server detail comprises IP address information, the status of given server 2, client 3 quantity and the load weight of not response time, connection.
Please refer to Fig. 5 and Fig. 6, embodiments of the invention one are:
All clients can be obtained the IP address that it will connect application server by access equalizer at the beginning of operation.Application server timed sending heartbeat packet is to database, and load equalizer is by the application server that will connect according to the balanced distribution of these heartbeat packet information client.
First, a newly-built state information table that records server info in database.In the time that application server moves, obtain the IP address of self and this information be written in the server state information table of database 1.And application server can send the client terminal quantity that is connected to self at set intervals in server state information table.
Secondly, the server state information table of equalizer timing acquisition database also carries out statistical analysis to server, and result is preserved back to database.Client connects the IP address of equalizer request server, selects an IP and return to client the server info that equalizer is preserved from this locality according to the balanced mode of setting.
Wherein, as shown in Figure 7, whole system flow process can be divided into four parts on framework:
1, repeat at regular intervals the connection state that is written into application server state information table to this locality from database and confirms server, will extremely preserve back database.
2, display interface.
3, in balanced class, realized and having distributed server is balanced, confirmed that server connects, statistic etc.
4, Midas service.An interface is in fact only provided, and interface provides the method for a Remote Acquisitioning server ip address.
In the operation interface of equalizer, concrete also comprise four parts, as shown in Figure 8, comprise 1, equalizer state; 2, server zone statistics; 3, Midas server list; 4, server detail.
And the mode of operation that equalizer provides can be one or more in following four kinds, and be not limited to following four kinds, selecting one of them mode of operation as default mode of operation operation in advance.
1, ordered mode: carry out a client application, select a server address to return from list, have another one and select next server to return.Be applicable to being applied to all stable environment of network, application server and client.
2, ratio mode: carry out distribution server according to the load weight of each server, the probability that weight is assigned to is more greatly larger.Be applicable to the not identical situation of hardware configuration of each server.
3, priority mode: each server has individual priority, what priority was high is preferentially selected.Until the connection upper limit.Be suitable for having a clear understanding of the load of the operation conditions customized application server of modules under framework.
4, minimum connection mode: select server client linking number minimum, this connection mode is simple and practical.
Preferably, on described equalizer, be also provided with house dog program, equalizer timing to house dog program pass-along message to confirm whether self normally works.If equalizer is overtime to house dog program validation oneself state, there is judgement equalizer deadlock situation and restarted in house dog program.
In sum, the method and system of a kind of server equally loaded provided by the invention, but when the method and system of this server 2 equally loadeds are applied in MIDAS system, by equalizer 4 is set under MIDAS system, server 2 timings are by the state information write into Databasce 1 of self, equalizer 4 will obtain database 1 and process and analyze the running status of Servers-all 2, client 3 just can be assigned to the address of the server 2 being attached thereto from equalizer 4, not only realize according to the residing operating state of server 2 and reasonably distributed the client 3 being attached thereto, reach the object that load divides balancing, and the running status of server 2 in grasp system in real time, find timely the server 2 of fault, avoid being connected into client 3 and the operation that affects system.Further, can also, by user interface to the system parameters setting of modifying, so that staff arranges adjustment according to the running status of system reality, ensure the well operation swimmingly of MIDAS entire system.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalents of utilizing specification of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a method for server equally loaded, is characterized in that, comprising:
Server periodically sends heartbeat packet to database; Described heartbeat packet comprises the IP information of described server and the load information of described server;
Database state information table, according to the IP information of server described in the heartbeat packet receiving by the correspondence position of the load information write state information table of described server;
Equalizer periodically obtains described state information table, the data message of state information table is carried out to statistical analysis, and deposit statistic analysis result in database;
Client is to the IP address of equalizer request server;
Equalizer selects the IP address of corresponding server to be back to client according to default mode of operation.
2. the method for a kind of server equally loaded according to claim 1, is characterized in that, equalizer provides following one or more " mode of operation " for default: ordered mode, ratio mode, priority mode and minimum connection mode;
In the time that described equalizer is ordered mode, equalizer order from described state information table is chosen the IP address of server and is returned;
In the time that described equalizer is ratio mode, equalizer, according to the load weight of server in described statistic analysis result, returns with the IP address of choosing server from large extremely little order;
In the time that described equalizer is priority mode, equalizer, according to the default priority of server in described state information table, returns with the IP that chooses server from height to low order;
In the time that described equalizer is minimum connection mode, the quantity of the client that equalizer connects according to server in described state information table, the IP that chooses server with order from less to more returns.
3. the method for a kind of server equally loaded according to claim 1, it is characterized in that, after described " equalizer periodically obtains described state information table; the data message of state information table is carried out to statistical analysis, and deposit statistic analysis result in database ", also comprise that described database is saved to statistic analysis result and state information table the step of local thesaurus;
When client is during to the IP address of equalizer request server, described equalizer selects the IP address of corresponding server to be back to client from local thesaurus according to default mode of operation.
4. the method for a kind of server equally loaded according to claim 1, is characterized in that, also comprises that timing upgrades and record the connection status of server, and the relevant information that is abnormal server by connection status is sent to the step of database.
5. the method for a kind of server equally loaded according to claim 1, it is characterized in that, also comprise by user interface and show the state of described equalizer, statistics, server list, the server detail of server zone and the step of described equalizer mode of operation of living in being modified by user interface;
The state of described equalizer comprises the residing mode of operation of described equalizer, server count quantitative statistics, saturation coefficient;
The statistics of described server zone comprises server deadlock number of times statistics, busy condition number and restarts number of times;
Described server list comprises the quantity of the client connecting in the residing operating state of IP address information, server that server is corresponding and corresponding server;
Described server detail comprises IP address information, the status of given server, client terminal quantity and the load weight of not response time, connection.
6. a system for server equally loaded, is characterized in that, comprising: server, database, equalizer and client; Described server comprises sending module, and described sending module is connected with equalizer by database, and described client connects equalizer; Described equalizer comprises acquisition module, statistical module and selection module, and described acquisition module is connected with described database respectively with statistical module, and described selection module is connected with described database and described client respectively;
Described sending module, periodically sends heartbeat packet to database for server; Described heartbeat packet comprises the IP information of described server and the load information of described server;
Described database, for setting up state information table, according to the IP information of server described in the heartbeat packet receiving by the correspondence position of the load information write state information table of described server;
Described acquisition module, periodically obtains described state information table for equalizer;
Described statistical module, carries out statistical analysis for equalizer to the data message of state information table, and deposits statistic analysis result in database;
Described client, for the IP address to equalizer request server;
Described selection module, selects the IP address of corresponding server to be back to client for equalizer according to default mode of operation.
7. the system of a kind of server equally loaded according to claim 6, is characterized in that, described equalizer also comprises presetting module, and described presetting module is connected with selecting module;
Described presetting module, for the default operational module of equalizer, equalizer provides following one or more " mode of operation " for default: ordered mode, ratio mode, priority mode and minimum connection mode;
In the time that described equalizer is ordered mode, equalizer order from described state information table is chosen the IP address of server and is returned;
In the time that described equalizer is ratio mode, equalizer, according to the load weight of server in described state information table, returns with the IP address of choosing server from large extremely little order;
In the time that described equalizer is priority mode, equalizer, according to the default priority of server in described state information table, returns with the IP that chooses server from height to low order;
In the time that described equalizer is minimum connection mode, the quantity of the client that equalizer connects according to server in described state information table, the IP that chooses server with order from less to more returns.
8. the system of a kind of server equally loaded according to claim 6, is characterized in that, also comprises local thesaurus module, and described database comprises memory module, and described memory module is connected with described statistical module and local thesaurus respectively; The selection module of described equalizer is connected with local thesaurus;
Described memory module, is saved to local thesaurus for described database by statistic analysis result and state information table;
Described selection module, also for when client is during to the IP address of equalizer request server, described equalizer selects the IP address of corresponding server to be back to client from local thesaurus according to default mode of operation.
9. the system of a kind of server equally loaded according to claim 6, is characterized in that, described equalizer also comprises update module, and described update module is connected with described server and database respectively;
Described update module, upgrades and records the connection status of server for timing, and the relevant information that is abnormal server by connection status is sent to database.
10. the system of a kind of server equally loaded according to claim 6, is characterized in that, described equalizer also comprises display module;
Described display module, for show by user interface described equalizer state, server zone statistics, server list, server detail and by user interface, described equalizer mode of operation of living in is modified;
The state of described equalizer comprises the residing mode of operation of described equalizer, server count quantitative statistics, saturation coefficient;
The statistics of described server zone comprises server deadlock number of times statistics, busy condition number and restarts number of times;
Described server list comprises the quantity of the client connecting in the residing operating state of IP address information, server that server is corresponding and corresponding server;
Described server detail comprises IP address information, the status of given server, client terminal quantity and the load weight of not response time, connection.
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