CN106059825A - Distributed system and configuration method - Google Patents
Distributed system and configuration method Download PDFInfo
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- CN106059825A CN106059825A CN201610537547.4A CN201610537547A CN106059825A CN 106059825 A CN106059825 A CN 106059825A CN 201610537547 A CN201610537547 A CN 201610537547A CN 106059825 A CN106059825 A CN 106059825A
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- configuration service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/084—Configuration by using pre-existing information, e.g. using templates or copying from other elements
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Abstract
The invention discloses a distributed system and a configuration method. The method is applied to the distributed system which comprises a client and a configuration server. The method comprises the following steps of computing a current abstract value of a configuration file of the current client according to an MD5 algorithm, sending the name of the configuration file and the current abstract value to the configuration server, comparing the configuration file name and the current abstract value with the configuration file name stored by the configuration server and the abstract value stored by the configuration server, if a comparison result shows that the names and the abstract values are not accordant, returning configuration file data corresponding to the configuration file name to the client by the configuration server, and if the comparison result shows that the names and the abstract values are accordant, making the configuration server do not process, and waiting for next comparison. The effect of reducing data flows and solving the problem of insufficient network resources is achieved.
Description
Technical field
The present invention relates to allocation of computer field, particularly relate to a kind of distributed system and collocation method thereof.
Background technology
Present distributed large scale system, is generally cut into multiple independent little service by total service, and each service is each
From disposing N number of service node.These service nodes, can use some common resources, such as data base, caching system, literary composition
Part system etc..
The information of these resources, generally in the way of configuration file, leaves each server local in.That so brings asks
Topic is exactly, and when being configured with change when, management personnel need to ensure to revise each configuration file, and the general of omission problem occurs
Rate is bigger；After configuration modification, service may need to restart to use up-to-date configuration, can cause system necessarily
Time is unavailable.
The present invention is directed to large-scale distributed system, configuration information distributed and saved not manageability, modification information can not be given birth in real time
The problem of effect, devises a kind of centralized configuration management system supported and dynamically change.Further, centralized management is brought
Availability and conforming problem, propose corresponding solution, in the hope of solving on the basis of existing issue, not or as far as possible
Introduce other problems less.
Therefore, when 1. configuration occurs change, need the configuration on Servers-all to be modified, when service node is got over
Many, occur that the probability omitted is the biggest.
2. after configuration modification, need the service of restarting, to load up-to-date configuration, restarting process services unavailable.
3. centralized management, generally by Network Capture configuration information, thereby produces availability issue.
4. a kind of scheme improving availability is to increase the node of storage configuration information, thus, can produce again multiple node
The state that data are inconsistent.
Summary of the invention
To this end, inventor provide a kind of distributed system collocation method, it is applied in distributed system, described distributed
System includes client, configuration service device, comprises the steps, calculates the configuration file of active client according to MD5 algorithm
Current digest value, is sent to profile name and current digest value in configuration service device, by described profile name with
Profile name and the digest value of configuration service device storage that current digest value stores with configuration service device are compared, if ratio
To for inconsistent, the most described configuration service device returns, to client, the profile data that described profile name is corresponding, if
Comparison is consistent, then configuration service device does not processes, and waits comparison next time.
Further, also including step, if comparison is consistent, then configuration service device does not processes, during until presetting return
Between terminate, return the consistent results messages of comparison.
Specifically, described distributed system also includes that registrar server, described method also include step, and manager services
Device more new configuration file also distributes version number, and carries out notifying more fresh information to configuration service device, and configuration service device obtains up-to-date
Configuration file version number, compares with self version number, if latest configuration fileversion number is more than self version number, then asks
Obtain latest update.
Further, described distributed system also includes data base, and method also includes step, when management server update is joined
After putting file, by profile data write into Databasce, and notify the more new state of configuration server file, configuration service
The configuration file that device updates to registrar server request after receiving renewal.
Further, also including step, configuration service device sends consistency checking and asks data base, and data base is receiving
Being current time by the latest update time modification of this configuration service device after request, data base judges that different configuration service device is
Whether the new time difference with current time that updates, less than Preset Time, is to judge that this server is consistent state, otherwise sentence
It is set to inconsistent, and updates the configuration service device list being in consistent state；
Client arranges service according to what the configuration service device list prioritizing selection being in consistent state was in consistent state
Device connects.
A kind of distributed system, described distributed system includes client, configuration service device,
Described client, will configuration for calculating the current digest value of the configuration file of active client according to MD5 algorithm
File name and current digest value are sent in configuration service device,
Described configuration service device is for by described profile name and current digest value and joining that configuration service device stores
The digest value putting file name and the storage of configuration service device is compared, and it is inconsistent for being additionally operable in comparison, the most described configuration clothes
Business device returns, to client, the profile data that described profile name is corresponding, is additionally operable to when comparison is consistent not do locate
Reason, waits comparison next time.
Further, described configuration service device is additionally operable to when comparison is consistent not process, until presetting time of return
Terminate, return the results messages that comparison is consistent.
Specifically, described distributed system also includes registrar server,
Described registrar server is for more new configuration file and distributes version number, and carries out notifying more to configuration service device
Fresh information,
Described configuration service device is used for obtaining latest configuration fileversion number, compares with self version number, is additionally operable to
When latest configuration fileversion number is more than self version number, to registrar server acquisition request latest update.
Further, described distributed system also includes that data base, described management server are additionally operable at more newly configured literary composition
After part, by profile data write into Databasce, and notify the more new state of configuration server file,
Described configuration service device is additionally operable to the configuration file updated after receiving renewal to database request.
Further, described configuration service device is additionally operable to send consistency checking and asks data base, and described data base uses
In being current time by the latest update time modification of this configuration service device after receiving the request, it is additionally operable to judge different configuration clothes
Whether the latest update time of business device and current time, less than Preset Time, are to judge that this server is consistent state, otherwise
It is judged to inconsistent, is additionally operable to update the configuration service device list being in consistent state；
The configuration service device list prioritizing selection that client is additionally operable to according to being in consistent state is in setting of consistent state
Put server to connect.
Being different from prior art, technique scheme can reach following advantage: reduces data stream, solves Internet resources not
The problem of foot, client need not restart receiving and update when, it is provided that the most convenient.The present invention will be scattered in everywhere
Configuration information is concentrated and is preserved and management, reduces O&M cost.Have only to make and once revise, i.e. can up-to-date configuration be pushed to respectively
Dynamically come into force on the node of individual this configuration of use, it is not necessary to restart service, it is ensured that the high availability of service.
Illustrate: indication of the present invention " configures " word easily to be obscured, and can be defined as configuration file, be taken as within the system
" data " process.
Accompanying drawing explanation
Fig. 1 is the distributed system connection figure described in the specific embodiment of the invention；
Fig. 2 is the distributed system collocation method flow chart described in the specific embodiment of the invention；
Fig. 3 is the distributed system module map described in the specific embodiment of the invention.
Description of reference numerals:
30, client；
32, configuration service device；
34, registrar server；
36, data base.
Detailed description of the invention
By describing the technology contents of technical scheme, structural feature in detail, being realized purpose and effect, below in conjunction with concrete real
Execute example and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1, for a kind of distributed system of the specific embodiment of the invention, following several submodule can be included:
S101 data base: relevant database is active and standby, it is possible to use mysql is as server, by a master library and one
Standby storehouse forms, the following several data of responsible preservation:
It is hosted in all configuration informations of this system.
The address information of current all of configuration service device (S103).
S102: management server, can include the web server of visualization interface, be made up of one or multiple stage, be responsible for
The most several responsibilities:
The all configuration informations being currently hosted in this system are revised and looks into or increase configuration information.
Check the list of current all of configuration service device (S103)
S103: configuration service device, is made up of multiple servers, it is provided that obtain the service of data
S104: client, uses on the server of this system at each, it is provided that service below:
Active obtaining data.
It is responsible for notice during data change.
Before the inventive method starts, may include steps of,
When configuration service device (S103) starts, can set up with data base (S101) and connect, obtain all configuration file content
And it is persisted to local disk, in internal memory, preserve MD5 value and the version number of all configuration file content simultaneously.
Carry out the flow process of configuration file content acquisition subsequently
Client (S104) sends http request to configuration service device, and service end is according to the name of the configuration file in parameter
Word, obtains the content of configuration file from local disk, returns client.
In the embodiment shown in Figure 2, this method starts from step S200, calculates active client according to MD5 algorithm
The current digest value of configuration file, is sent to profile name and current digest value in configuration service device, and S202 is by described
The profile name of profile name and current digest value and the storage of configuration service device and the summary of configuration service device storage
Value is compared, if S204 comparison is inconsistent, the most described configuration service device returns described profile name pair to client
The configuration file content answered, if comparison is consistent, then configuration service device does not processes, and waits comparison next time.
In some specific embodiment, use MD5 digest algorithm and the mode of long training in rotation, disappear reducing the network bandwidth
While consumption, promote the promptness of data Notification of Changes.
For the echo plex mode of long training in rotation, further, if this method also includes that the comparison of step S206 is consistent, then configure
Server does not processes, and terminating until presetting time of return, returning the results messages that comparison is consistent.Described default time of return is
Certain period being manually set, may be asked by the concordance comparison of repeatedly configuration service device in default time of return,
If comparison is consistent, keep the state do not replied, until comparison request comparison is inconsistent, or the time of return preset
Terminate, just return comparison result.
The user of client (104) needs to pay close attention to the change of a data.User three parameters of transmission are to client:
The name (being designated as ID) of this configuration file
The content (being designated as A1) that this configuration file is current
When configuration file content changes, need certain method (being designated as ME) called.
Client takes the operation after these three parameter:
1. calculate the MD5 value of current configuration file content A1, be designated as CM1 here
2. ID and CM1 is sent to configuration service device, and etc. to be returned
3. configuration service device receives the above request that client sends, by the MD5 value of this configuration file in CM1 and internal memory
(being designated as SM1) compares, if different, turns to flow process 6 the most immediately
4. configuration service device (is designated as T) within a regular time and holds this request, and detects whether SM1 becomes
Changing, if it has, turn to flow process 6 the most immediately, the time T of otherwise waiting for terminates
5. configuration service device terminates this request process, returns null value, turns to flow process 7
6. configuration service device is from the content (being designated as A2) of the configuration file of the local disk entitled ID of acquisition, and this value is returned visitor
Family end (S104)
7. client receives return, and detection returned content is empty, if sky, then turns to flow process 2
8. A2 and A1 is carried out Data Comparison, if equally, then turn to flow process 2
9. with A2 as parameter, call method ME, will notify to user by A2.
10., using A2 as content new for A1, turn to flow process 1.
By such scheme, contrasting normal training in rotation mode, the method reduces the number of times frequently sending futile requests, and
Because not having the training in rotation cycle, the ability of real-time perception data change is higher.
And contrasting and send the data directly to the pattern that service end contrasts in service end, the method passes through digest algorithm, keeps away
Exempt from network congestion and the bandwidth waste caused the most greatly because of the data content of transmission.
In further embodiments, this method also includes step, and registrar server more new configuration file also distributes version
Number, and carrying out notifying more fresh information to configuration service device, configuration service device obtains latest configuration fileversion number, with self version
Number compare, if latest configuration fileversion number is more than self version number, then obtain latest update to registrar server.?
In the present embodiment, registrar server can be after receiving latest update request, to data base call latest update.
Further carry out in example, also include step, when after management server update configuration file, by profile data
Write into Databasce, and notify the more new state of configuration server file, configuration service device after receiving renewal or comparison
New configuration file version number is more than the configuration file directly updated to database request after self version number.
The upper content revising configuration file of registrar server (S102), first this content is persisted to data base
(S101), the name (being designated as ID) of the configuration file of amendment and version number's (being designated as V1) then can be notified all of configuration clothes
In business device (S103), after configuration service device receives request, first contrast with the version number's (being designated as V2) self preserved, if
V1 > V2, then it is assumed that configuration file has renewal, starts an asynchronous task, and it is corresponding that this task obtains ID from data base (S101)
The content of configuration file, version number and MD5 value, then configuration file content is persisted to local disk, version number and MD5
Value is saved in internal memory, and flow process terminates.Pass through such scheme so that configuration service device can real-time update self configuration literary composition
Part, solves the problem that configuration service device file updates.
It addition, be likely to occur what Network Abnormal caused for registrar server (S102) notice configuration service device (S103)
Configuration service device (S103) cannot perception configuration file change problem.Configuration service device (S103) can be termly to data base
(S101) the configuration file version number (being designated as V3) updated in inquiry obtains a nearest cycle, and the version number preserved with self
(being designated as V4) contrasts, if V3 > V4, then it is assumed that configuration file would have renewal, then can obtain from data base (S101)
New configuration file content, version and MD5 value.
The new content of configuration file is transferred to the behavior of each configuration service device it can be understood as data transmission
Process, during include sender, reciever and data.
Common, when data update, real-time informing way is that data content is directly sent to the back end of reality,
Data are preserved after receiving data by recipient directly as latest data.Under this scheme, when shake occurs in network, and sender does not has
Having the feedback receiving reciever in time, sender, in order to ensure data consistency as far as possible, can retry this secondary data and send, because often
Once sending is all that the true content of data is sent to recipient, causes the waste of the network bandwidth.Further, if sender connects
Continue and repeatedly revise data, it may appear that message repeatedly sends, because network reason, have probability the notice of second revision to occur first
Arrive in for the first time, cause the final data of the data cover after first revision, occur that data are inconsistent.On the other hand, connect
Recipient in order to avoid repeat to accept same number according to and perform repetitive operation, it will usually by the data received with itself had
Data do once completely comparison, thus bring performance impact.
In this programme, the registrar server of sender and the configuration of recipient take the data of server interaction and only have version
Number, it is to avoid bandwidth waste that data content bring be transmitted several times.After recipient obtains version number, obtain current from data base
Version number that these data are up-to-date and content, do not have change for the first time and cover second time change and cause the inconsistent feelings of data
Condition.Further, when the change of same secondary data is repeated to send by recipient for sender, as long as contrasting self version number and leading to
The version number known, can avoid repetitive operation.
2. the scheme of real-time informing, has probability to occur notifying failed problem in the case of unstable networks, thus leads
Cause data are inconsistent.For this situation, this method uses the mode that periodic data updates, makes up real-time update and be likely to occur
Situation about omitting, specific as follows: after recipient starts, can one time stamp T 1 of record, all after date, reception on the database
It is interior during this period of time that T2 is stabbed in the request of bearing data storehouse from T1 to current time, has the version number of the data that change occurs.By obtain
After the versions of data Vb contrast that version number Va and the machine preserve, for Va > data of Vb, obtain in data from data base
Hold, version number and MD5 value, update to the machine.After this flow process terminates, T2 be recorded the T1 value that the upper covering of data base is original.
In some other further embodiment, also including step, configuration service device sends consistency checking and asks
Data base, the latest update time modification of this configuration service device is current time by data base after receiving the request, and data base sentences
Whether the latest update time of disconnected different configuration service device and the difference of current time, less than Preset Time, are to judge this service
Device is consistent state, is otherwise judged to inconsistent, and updates the configuration service device list being in consistent state；
Client arranges service according to what the configuration service device list prioritizing selection being in consistent state was in consistent state
Device connects.
Function 1. configuration service device (S103) regular request data base (S101) can update oneself time on the database
Stamp.What one configuration service device (S103) was in that coherency state represents is this configuration service device (S103) is
The nearly current time of timestamp and data base (S101) that updates is in the range of a consistent difference.
Function 2. configuration service device (S103) regular request data base (S101) acquisition can be currently at coherency state
Configuration service device (S103) list, and it is persisted to local disk.
Function 3. client (S104) prioritizing selection is in the configuration service device (S103) of coherency state.
Step is as follows: after client (S104) connects certain configuration service device (S103), is first currently to its inquiry
Configuration service device (S103) list of coherency state, and this list is persisted to client (S104) local disk, so
After from list, randomly choose a configuration service device (S103) carry out normal communication service.Further, client has one only
Vertical thread, periodically obtains configuration service device (S103) list being in coherency state, is persisted to local disk.As
Fruit finds that the current configuration service device (S103) connected can not connect or be not at coherency state, then joining from local cache
Put in server (S103) list and randomly choose one, reconnect.Until the configuration service device (S103) on connecting is in one
Cause sexual state or find that all configuration service devices are all in inconsistent state.
Function 4. client (S104) can cache the data content of acquisition.When client (S104) is from configuration service device
(S103) after upper reading data, can be by this data persistence to local disk.
High accuracy refers to each assembly in this system probably due to inconsistent the asking of data occurs in network reason
Topic, all of client (S104) can identify this problem in the short period of time, and be automatically found up-to-date data (if
If can).
The principle of high availability is, 1. delays machine as data base (S101), and client (S104) can pass through configuration service device
(S103) data are obtained, though the situation that configuration service device (S103) is restarted, although data base (S101) can not be connected and obtain
New data, but data can be read from local disk, it is ensured that high availability.
2., when machine delayed by some configuration service device (S103), according to function 3, client (S104) meeting can be at local cache
Configuration service device (S103) list in, find the configuration service device (S103) that service can be provided, it is ensured that High Availabitity.
3. configuration service device (S103) all delay machine time, according to function 4, client (S104) can read the number of local cache
According to, it is ensured that High Availabitity.
High conforming principle is:
When multiple stage configuration service device (when S103 is in inconsistent state), based on function 3, client (S104) finds oneself
When the configuration service device (S103) connected is not at coherency state, can attempt finding other configurations being in coherency state clothes
Business device (S103) also reconnects.
According to above basic characteristics, this method can reach high availability and the conforming state of height, and high availability refers to
It is, each assembly S101 in this system that S102, S103, S104 are likely to disaster, when a disaster occurs, this system
By the way of reducing some service, it is ensured that Core Feature continues available.Pass through said method, it is possible at part configuration service device
Abnormal, when being in inconsistent state, client can obtain the abnormality of configuration service device and automatically connect and be in consistent shape
The configuration service device of state, obtains latest data, improves high availability and the high accuracy of system.
In the embodiment shown in fig. 3, for a kind of distributed system of the present invention, described distributed system includes visitor
Family end 30, configuration service device 32,
Described client 30, for calculating the current digest value of the configuration file of active client according to MD5 algorithm, will be joined
Put file name and current digest value be sent in configuration service device,
Described configuration service device 32 is for by described profile name and current digest value and the storage of configuration service device
The digest value of profile name and the storage of configuration service device is compared, and it is inconsistent for being additionally operable in comparison, the most described configuration
Server returns, to client, the profile data that described profile name is corresponding, is additionally operable to when comparison is consistent not do
Process, wait comparison next time.By said system, contrasting normal training in rotation mode, the method minimizing frequently sends useless asking
The number of times asked, and because the ability not having training in rotation cycle real-time perception data to change is higher.
And contrasting and send the data directly to the pattern that service end contrasts in service end, the method passes through digest algorithm, keeps away
Exempt from network congestion and the bandwidth waste caused the most greatly because of the data content of transmission.
Further, described configuration service device is additionally operable to when comparison is consistent not process, until presetting time of return
Terminate, return the results messages that comparison is consistent.Preferably save Internet resources and decrease data transmission.
Specifically, described distributed system also includes registrar server 34,
Described registrar server is for more new configuration file and distributes version number, and carries out notifying more to configuration service device
Fresh information,
Described configuration service device is used for obtaining latest configuration fileversion number, compares with self version number, is additionally operable to
When latest configuration fileversion number is more than self version number, obtain latest update to registrar server.By such scheme,
Make configuration service device can the configuration file of real-time update self, solve the problem that configuration service device file updates.
Further, described distributed system also includes that data base 36, described management server are additionally operable to more newly configured
After file, by profile data write into Databasce, and notify the more new state of configuration server file,
Described configuration service device is additionally operable to the configuration file updated after receiving renewal to database request.
Further, described configuration service device is additionally operable to send consistency checking and asks data base, and described data base uses
In being current time by the latest update time modification of this configuration service device after receiving the request, it is additionally operable to judge different configuration clothes
Whether the latest update time of business device is less than Preset Time with current time, it is to judge that this server is consistent state, otherwise
It is judged to inconsistent, is additionally operable to update the configuration service device list being in consistent state；
The configuration service device list prioritizing selection that client is additionally operable to according to being in consistent state is in setting of consistent state
Put server to connect.
Said system can be abnormal at part configuration service device, and when being in inconsistent state, client can be configured
The abnormality of server also connects the configuration service device being in consistent state automatically, obtains latest data, improves system
High availability and high accuracy.
It should be noted that in this article, the relational terms of such as first and second or the like is used merely to a reality
Body or operation separate with another entity or operating space, and deposit between not necessarily requiring or imply these entities or operating
Relation or order in any this reality.And, term " includes ", " comprising " or its any other variant are intended to
Comprising of nonexcludability, so that include that the process of a series of key element, method, article or terminal unit not only include those
Key element, but also include other key elements being not expressly set out, or also include for this process, method, article or end
The key element that end equipment is intrinsic.In the case of there is no more restriction, statement " including ... " or " comprising ... " limit
Key element, it is not excluded that there is also other key element in including the process of described key element, method, article or terminal unit.This
Outward, in this article, " be more than ", " being less than ", " exceeding " etc. are interpreted as not including this number；More than " ", " below ", " within " etc. understand
For including this number.
Those skilled in the art are it should be appreciated that the various embodiments described above can be provided as method, device or computer program product
Product.These embodiments can use complete hardware embodiment, complete software implementation or combine software and hardware in terms of embodiment
Form.All or part of step in the method that the various embodiments described above relate to can instruct relevant hardware by program
Completing, described program can be stored in the storage medium that computer equipment can read, and is used for performing the various embodiments described above side
All or part of step described in method.Described computer equipment, includes but not limited to: personal computer, server, general-purpose computations
Machine, special-purpose computer, the network equipment, embedded device, programmable device, intelligent mobile terminal, intelligent home device, Wearable
Smart machine, vehicle intelligent equipment etc.；Described storage medium, includes but not limited to: RAM, ROM, magnetic disc, tape, CD, sudden strain of a muscle
Deposit, the storage of USB flash disk, portable hard drive, storage card, memory stick, the webserver, network cloud storage etc..
The various embodiments described above are with reference to according to the method described in embodiment, equipment (system) and computer program
Flow chart and/or block diagram describe.It should be understood that can every by computer program instructions flowchart and/or block diagram
Flow process in one flow process and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computers can be provided
Programmed instruction to the processor of computer equipment to produce a machine so that the finger performed by the processor of computer equipment
Order produces for realizing specifying in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame
The device of function.
These computer program instructions may be alternatively stored in the computer that computer equipment can be guided to work in a specific way and set
In standby readable memory so that the instruction being stored in this computer equipment readable memory produces the manufacture including command device
Product, this command device realizes at one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame middle finger
Fixed function.
These computer program instructions also can be loaded on computer equipment so that performs a series of on a computing device
Operating procedure is to produce computer implemented process, thus the instruction performed on a computing device provides for realizing in flow process
The step of the function specified in one flow process of figure or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although being described the various embodiments described above, but those skilled in the art once know basic wound
The property made concept, then can make other change and amendment to these embodiments, so the foregoing is only embodiments of the invention,
Not thereby the scope of patent protection of the present invention, every equivalent structure utilizing description of the invention and accompanying drawing content to be made are limited
Or equivalence flow process conversion, or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the patent of the present invention
Within protection domain.
Claims (10)
1. a distributed system collocation method, it is characterised in that be applied in distributed system, described distributed system includes
Client, configuration service device, comprise the steps, calculates the current summary of the configuration file of active client according to MD5 algorithm
Value, is sent to profile name and current digest value in configuration service device, by described profile name and current summary
Profile name and the digest value of configuration service device storage that value stores with configuration service device are compared, if comparison is for differing
Causing, the most described configuration service device returns, to client, the profile data that described profile name is corresponding, if comparison is one
Cause, then configuration service device does not processes, and waits comparison next time.
Distributed system collocation method the most according to claim 1, it is characterised in that also include step, if comparison is one
Cause, then configuration service device does not processes, and terminating until presetting time of return, returning the results messages that comparison is consistent.
Distributed system collocation method the most according to claim 1, it is characterised in that described distributed system also includes pipe
Reason person's server, described method also includes step, and registrar server more new configuration file also distributes version number, and to configuration clothes
Business device carries out notifying more fresh information, and configuration service device obtains latest configuration fileversion number, compares with self version number, if
Latest configuration fileversion number is more than self version number, then obtain latest update to registrar server.
Distributed system collocation method the most according to claim 3, it is characterised in that described distributed system also includes number
According to storehouse, method also includes step, when after registrar server more new configuration file, by profile data write into Databasce, and
The more new state of notice configuration server file, the configuration that configuration service device updates to database request after receiving renewal
File.
Distributed system collocation method the most according to claim 4, it is characterised in that also include step, configuration service device
Sending consistency checking and ask data base, data base is after receiving the request by the latest update time modification of this configuration service device
For current time, data base judges whether the latest update time of different configuration service device is less than with the difference of current time and presets
Time, it is to judge that this server is consistent state, be otherwise judged to inconsistent, and updates the configuration service being in consistent state
Device list；
Client is in the configuration service device of consistent state even according to the configuration service device list prioritizing selection being in consistent state
Connect.
6. a distributed system, it is characterised in that described distributed system includes client, configuration service device,
Described client for calculating the current digest value of the configuration file of active client according to MD5 algorithm, by configuration file
Title and current digest value are sent in configuration service device,
Described configuration service device is for the configuration literary composition by described profile name with current digest value with the storage of configuration service device
The digest value of part title and the storage of configuration service device is compared, and it is inconsistent for being additionally operable in comparison, the most described configuration service device
Return, to client, the profile data that described profile name is corresponding, be additionally operable to when comparison is consistent not process,
Wait comparison next time.
Distributed system the most according to claim 6, it is characterised in that it is one that described configuration service device is additionally operable in comparison
Do not process during cause, terminating until presetting time of return, returning the results messages that comparison is consistent.
Distributed system the most according to claim 6, it is characterised in that described distributed system also includes that manager services
Device,
Described registrar server is for more new configuration file and distributes version number, and carries out notice renewal letter to configuration service device
Breath,
Described configuration service device is used for obtaining latest configuration fileversion number, compares with self version number, is additionally operable to
When new configuration file version number is more than self version number, obtain latest update to registrar server.
Distributed system the most according to claim 8, it is characterised in that described distributed system also includes data base, institute
State management server and be additionally operable to after more new configuration file, by profile data write into Databasce, and notify configuration service device
The more new state of configuration file,
Described configuration service device is additionally operable to the configuration file updated after receiving renewal to database request.
Distributed system the most according to claim 9, it is characterised in that described configuration service device is additionally operable to send unanimously
Property checking request to data base, described data base is for after receiving the request by the latest update time modification of this configuration service device
For current time, whether it is additionally operable to the latest update time judging different configuration service device with current time less than Preset Time,
It is to judge that this server is consistent state, be otherwise judged to inconsistent, be additionally operable to update the configuration service being in consistent state
Device list；
Client is additionally operable to arrange clothes according to what the configuration service device list prioritizing selection being in consistent state was in consistent state
Business device connects.
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