CN109245908A - A kind of method and apparatus of principal and subordinate's cluster switching - Google Patents
A kind of method and apparatus of principal and subordinate's cluster switching Download PDFInfo
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- CN109245908A CN109245908A CN201710555869.6A CN201710555869A CN109245908A CN 109245908 A CN109245908 A CN 109245908A CN 201710555869 A CN201710555869 A CN 201710555869A CN 109245908 A CN109245908 A CN 109245908A
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- cluster
- back end
- nodal value
- configuration information
- client
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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
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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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
- H04L41/0876—Aspects of the degree of configuration automation
- H04L41/0886—Fully automatic configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
- H04L67/1044—Group management mechanisms
Abstract
The embodiment of the present invention provides a kind of method and apparatus of principal and subordinate's cluster switching, is related to field of computer technology.The method of the embodiment of the present invention includes: creation back end, the configuration information of main cluster is written in the nodal value of corresponding back end；When needing to carry out the switching of principal and subordinate's cluster, the nodal value of the back end is revised as the to be switched configuration information from cluster；Whether the nodal value for monitoring the back end changes, after monitoring that the nodal value changes, the to be switched configuration information from cluster is obtained, the client is modified according to the configuration information got and is directed toward the link of cluster to realize the switching of principal and subordinate's cluster.By configuration information being written in the nodal value of back end in the embodiment of the present invention, the nodal value of client monitors back end changes, after monitoring that nodal value changes, obtains the configuration information from cluster and modify the link of client to cluster, realize the online switching of principal and subordinate's cluster.
Description
Technical field
The present invention relates to the method and apparatus that computer field more particularly to a kind of principal and subordinate's cluster switch.
Background technique
Currently, more and more Internet companies start using large-scale cluster come supporting business, in order to guarantee cluster
High Availabitity, many companies all use principal and subordinate's cluster across computer room disaster tolerance as solution.The switching of principal and subordinate's cluster at present
There are mainly two types of schemes: scheme one: modification configuration is restarted.Client prepares two sets of configurations, and main cluster is directed toward in a set of configuration, another
Set configuration is directed toward from cluster, and when main clustering fault, client restarts application, and modification is configured to be directed toward from cluster.Scheme two: double
It is living.Two sets of clients are run simultaneously, and a set of client accesses main cluster, and another set of client access is from cluster, when main cluster event
When barrier, accesses and remain to normally access from the application of cluster.
In realizing process of the present invention, at least there are the following problems in the prior art for inventor's discovery:
(1) it services unavailable.Restart client mean to service it is unavailable, this in line service often can not
Tolerance.
(2) time-consuming.When client scale is when thousands of even more big, it is very long to restart client time-consuming.
(3) at high cost.The scheme of dual-active means to expend more resources, needs higher maintenance cost.
(4) data consistency.The scheme of dual-active needs the data consistency of client oneself guarantee principal and subordinate's cluster, when a set of
After the fault recovery of client, complement is generally required.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of method and apparatus of principal and subordinate's cluster switching.In the embodiment of the present invention
By configuration information being written in the nodal value of back end, the nodal value of client monitors back end changes, when monitoring
After nodal value changes, obtains the configuration information from cluster and modify the link of client to cluster, realize principal and subordinate's cluster
Online switching.
To achieve the above object, according to an aspect of an embodiment of the present invention, a kind of side of principal and subordinate's cluster switching is provided
Method.
A kind of method of principal and subordinate's cluster switching of the embodiment of the present invention, comprising: creation back end, by the configuration of main cluster
Information is written in the nodal value of corresponding back end；When needing to carry out the switching of principal and subordinate's cluster, by the section of the back end
Point value is revised as the to be switched configuration information from cluster；Whether the nodal value for monitoring the back end changes, and works as prison
It measures after the nodal value changes, obtains the to be switched configuration information from cluster, confidence is matched according to getting
Breath modifies the client and is directed toward the link of cluster to realize the switching of principal and subordinate's cluster.
Optionally, back end is created, comprising: the back end is created in ZooKeeper.
Optionally, whether the nodal value for monitoring the back end changes, comprising: is arranged to the back end and supervises
Listen whether device is changed with the nodal value of back end described in real-time monitoring.
Optionally, whether the nodal value for monitoring the back end changes, comprising: institute is inquired in timing or not timing
State the nodal value of back end, more adjacent nodal value twice it is whether identical with monitor the back end nodal value whether
It changes.
Optionally, the method also includes: in client terminal start-up, the configuration information of the main cluster is obtained, according to institute
It states configuration information and creates the link that the client is directed toward cluster.
To achieve the above object, according to another aspect of an embodiment of the present invention, a kind of dress of principal and subordinate's cluster switching is provided
It sets.
A kind of device of principal and subordinate's cluster switching of the embodiment of the present invention, comprising: creation and writing module, for creating data
Node the configuration information of main cluster is written in the nodal value of corresponding back end；Modified module is led for working as
When switching from cluster, the nodal value of the back end is revised as the to be switched configuration information from cluster；Monitoring and modification
Whether link module, the nodal value for monitoring the back end change, when monitoring that the nodal value changes
Afterwards, the to be switched configuration information from cluster is obtained, the client is modified according to the configuration information got and is directed toward collection
The link of group is to realize the switching of principal and subordinate's cluster.
Optionally, the creation and writing module, are also used to: the back end is created in ZooKeeper.
Optionally, the monitoring and modification link module, are also used to: to back end setting monitor to supervise in real time
Whether the nodal value for surveying the back end changes.
Optionally, the monitoring and modification link module, be also used to: the back end is inquired in timing or not timing
Nodal value, whether more adjacent nodal value twice is identical is changed with the nodal value for monitoring the back end.
Optionally, described device further include: creation link module, for obtaining the main cluster in client terminal start-up
Configuration information, the link that the client is directed toward cluster is created according to the configuration information.
To achieve the above object, according to an embodiment of the present invention in another aspect, providing a kind of electronic equipment.
The a kind of electronic equipment of the embodiment of the present invention, comprising: one or more processors；Storage device, for storing one
A or multiple programs, when one or more of programs are executed by one or more of processors, so that one or more
The method that a processor realizes a kind of principal and subordinate's cluster switching of the embodiment of the present invention.
To achieve the above object, according to an embodiment of the present invention in another aspect, providing a kind of computer-readable medium.
A kind of computer-readable medium of the embodiment of the present invention, is stored thereon with computer program, and described program is processed
A kind of method of principal and subordinate's cluster switching of the embodiment of the present invention is realized when device executes.
One embodiment in foregoing invention has the following advantages that or the utility model has the advantages that by the way that configuration information is maintained into data
Node, the nodal value variation of client monitors back end obtain configuration information and repair after monitoring that nodal value changes
Change the link of client to cluster, the online switching of principal and subordinate's cluster is only achieved that with a set of client.By by configuration information
It is maintained into ZooKeeper, and monitors nodal value variation in real time with monitor, it is ingenious to have used ZooKeeper that pass through monitoring
The characteristics of device is monitored in real time is rapidly completed the switching of principal and subordinate's cluster, switching can still be rapidly completed when client terminal quantity is huge.
Further effect possessed by above-mentioned non-usual optional way adds hereinafter in conjunction with specific embodiment
With explanation.
Detailed description of the invention
Attached drawing for a better understanding of the present invention, does not constitute an undue limitation on the present invention.Wherein:
Fig. 1 is the schematic diagram of the key step of the method for principal and subordinate's cluster switching according to an embodiment of the present invention；
Fig. 2 is the flow chart of the method for principal and subordinate's cluster switching according to an embodiment of the present invention；
Fig. 3 is the architecture diagram of principal and subordinate's cluster switching system before cluster switching according to an embodiment of the present invention；
Fig. 4 is the architecture diagram of principal and subordinate's cluster switching system after cluster switching according to an embodiment of the present invention；
Fig. 5 is the schematic diagram of back end in ZooKeeper before cluster according to an embodiment of the present invention switches；
Fig. 6 is the schematic diagram of back end in ZooKeeper after modification according to an embodiment of the present invention；
Fig. 7 is the schematic diagram of the main modular of the device of principal and subordinate's cluster switching according to an embodiment of the present invention；
Fig. 8 is that the embodiment of the present invention can be applied to exemplary system architecture figure therein；
Fig. 9 is the structural schematic diagram for being suitable for the computer installation of the electronic equipment to realize the embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing, an exemplary embodiment of the present invention will be described, including the various of the embodiment of the present invention
Details should think them only exemplary to help understanding.Therefore, those of ordinary skill in the art should recognize
It arrives, it can be with various changes and modifications are made to the embodiments described herein, without departing from scope and spirit of the present invention.Together
Sample, for clarity and conciseness, descriptions of well-known functions and structures are omitted from the following description.
Fig. 1 is the schematic diagram of the key step of the method for principal and subordinate's cluster switching according to an embodiment of the present invention.Such as Fig. 1 institute
Show, the method for principal and subordinate's cluster switching of the embodiment of the present invention mainly includes the following steps:
Step S101: creation back end the configuration information of main cluster is written in the nodal value of corresponding back end.
Configuration information is uniformly maintained into back end by this step, and back end here can be in distributed application services
It is created in ZooKeeper or in Consul.One back end generally corresponds to the specific service application of user.Configuration
Information can be written in the nodal value of back end, know whether configuration information has occurred subsequently through the variation of monitoring node value
Change.
Step S102: when needing to carry out the switching of principal and subordinate's cluster, the nodal value of the back end is revised as to be switched
Slave cluster configuration information.When main clustering fault or main cluster need to carry out upgrade maintenance, need to carry out principal and subordinate's cluster
Switching.Here two kinds of scenes are considered, one is nodal value is revised as to be switched matching from cluster manually by maintenance personnel
Confidence breath, triggering cluster switching.Another kind is that main clustering fault is observed from cluster, automatically by itself configurable write ingress value
In, triggering cluster switching.
Step S103: whether the nodal value for monitoring the back end changes, when monitoring that the nodal value occurs
After variation, the to be switched configuration information from cluster is obtained, the client is modified according to the configuration information got and is referred to
To the link of cluster to realize the switching of principal and subordinate's cluster.Client is by monitor process come the variation of real-time monitoring nodal value.
After server end triggers monitoring event, it can send and notify to client, it is to be switched from cluster that acquisition is executed by client
Configuration information readjustment logic.The link of cluster is directed toward so that client refers to according to the configuration information modification client got
To be switched from cluster, the online switching of principal and subordinate's cluster is so far completed.After the completion of switching, monitor process continues monitoring modification
Whether nodal value afterwards changes.
Wherein, whether the nodal value that the back end is monitored in step 103 changes, and mentions in the embodiment of the present invention
Two kinds of implementations are supplied.Mode one: to back end setting monitor with the node of back end described in real-time monitoring
Whether value changes.Mode two: the nodal value of the back end, more adjacent section twice are inquired in timing or not timing
Whether whether point value is identical is changed with the nodal value for monitoring the back end.Mode one can be monitored in real time, mode two
It can not real-time monitoring.
When using the configuration information of ZooKeeper maintenance cluster, client can pass through Watcher process real-time monitoring number
Whether change according to the nodal value of node.Specific implementation are as follows: client is to ZooKeeper server registration Watcher, together
When, Watcher object is stored in the management of monitor device (WatchManager) of client.When ZooKeeper server touches
After sending out Watcher event, the notice that Watcher event occurs for which back end can be sent to client, client again from
Corresponding Watcher object is taken out in WatchManager to execute readjustment logic.Wherein, Watcher is that ZooKeeper is realized
The main means of the applications such as distributed lock, decentralized configuration, distributed queue can monitor the nodal value variation of arbitrary node.
In addition, between step 101 and step 102, the method for principal and subordinate's cluster switching of the embodiment of the present invention further include:
When client terminal start-up, the configuration information of the main cluster is obtained, the client is created according to the configuration information and is directed toward cluster
Link.Below by taking the configuration information using ZooKeeper maintenance cluster as an example, which is described in detail:
(1) configuration information of cluster: starting client is obtained, client obtains the back end being locally configured, access
ZooKeeper simultaneously inquires the data in corresponding data node, parses the data to obtain the configuration information of main cluster；
(2) creation link: client constructs configuration parameter according to the configuration information of acquisition, uses configuration parameter create chain
It connects.
Below to safeguard configuration information, the main cluster that cluster A is accessed as client, cluster B conduct in ZooKeeper
For to be switched slave cluster, principal and subordinate's cluster switching method of the invention is illustrated.
Each cluster includes multiple servers, one or more server in cluster constitutes server-side.Client
Access request is initiated to server-side, the final access request can be transferred to the specific service device of server-side.Before the switching of principal and subordinate's cluster
Afterwards, it need to guarantee that data/table of client request exists in another cluster, therefore the data between cluster A and cluster B are answered
When being mutually synchronized.By taking cluster A is HBase cluster (cluster is a distributed column storage system) as an example, synchronous specific reality
Existing mode can be with are as follows: cluster A is by included duplication (Replication) function by write-ahead log (Write-Ahead
Logging, WAL) it is sent to cluster B, cluster B plays back WAL log after receiving, daily record data is written in this cluster.
Fig. 2 is the flow chart of the method for principal and subordinate's cluster switching according to an embodiment of the present invention.As shown in Fig. 2, the present invention is real
The method for applying principal and subordinate's cluster switching of example, includes the following steps:
Step S201: creating corresponding back end in ZooKeeper, and the configuration information write-in of cluster A is corresponding
In back end；It is corresponding with client for creating the correspondence in corresponding back end.Usually created in ZooKeeper cluster
Back end, the back end are used to the configuration information of storage cluster, are the entities of client access ZooKeeper.
Step S202: starting client obtains the configuration information of the cluster A of corresponding data node in ZooKeeper；Client
It can configure which back end it monitors in the configuration file at end.
Step S203: client creates its link for being directed toward cluster according to the configuration information of the cluster A of acquisition, meanwhile, wound
Build a monitor process (Watcher process)；
Step S204: when needing to switch over, the manual/auto nodal value by corresponding data node in ZooKeeper
It is revised as the configuration information of to be switched cluster B；
Step S205: client is by the variation of Watcher process real-time monitoring nodal value, when monitoring nodal value
After variation, the configuration information of cluster B is reacquired；
Step S206: client modifies its link for being directed toward cluster according to the configuration information of the cluster B got.
After step S206 is finished, cluster B is switched as main cluster.Later, client repeat step S205 and
S206 by Watcher process to continue to monitor whether modified nodal value changes, after monitoring nodal value variation,
The configuration information of new cluster is reacquired, new cluster is directed toward in modification link.
Fig. 3 is the architecture diagram of principal and subordinate's cluster switching system before cluster switching according to an embodiment of the present invention.Such as Fig. 3 institute
Show, the master-slave swap system of the embodiment of the present invention includes client 1 to client N, cluster A, cluster B and ZooKeeper, cluster
Before switching, cluster A is client 1 to the main cluster of client N, passes through step S201 to step S203, client 1 to client
N obtains the configuration information of cluster A from the corresponding data node of ZooKeeper, then creates client 1 to client N direction
The link of cluster A so that client 1 to client N access cluster A.
Fig. 4 is the architecture diagram of principal and subordinate's cluster switching system after cluster switching according to an embodiment of the present invention.Such as Fig. 4 institute
Show, after cluster switching, cluster B is switched to the main cluster of client 1 to client N.Pass through step S205, step S206, visitor
In corresponding data node of the family end 1 to client N from ZooKeeper obtain cluster B configuration information, then by client 1 to
Client N be directed toward cluster A link be modified to point to cluster B so that client 1 to client N access cluster B.
Fig. 5 is the schematic diagram of back end in ZooKeeper before cluster according to an embodiment of the present invention switches.Such as Fig. 5 institute
Show, before cluster switching, creation corresponds to the back end 1 of client to back end N in ZooKeeper.Back end 1 to
The nodename of back end N corresponds to/SL100000000001 to/SL10000000000N；Back end 1 is to back end
The nodal value of N is the configuration information of cluster A.Certainly, here back end 1 to back end N configuration information be cluster A also
It is that cluster B can be customized by the user, for example set the nodal value of back end 1 to the configuration information of cluster A, back end
2 nodal value is set as the configuration information of cluster B, is only a schematic diagram in figure.
Fig. 6 is the schematic diagram of back end in ZooKeeper after modification according to an embodiment of the present invention.As shown in fig. 6, working as
When needing main cluster being switched to cluster B by cluster A, the nodal value of back end 1 to back end N is revised as cluster B
Configuration information.Equally, back end 1 to the modified nodal value of back end N can also be customized by the user here.
The method of principal and subordinate's cluster switching through the embodiment of the present invention can be seen that by the way that configuration information is maintained into data
Node, the nodal value variation of client monitors back end obtain configuration information and repair after monitoring that nodal value changes
Change the link of client to cluster, the online switching of principal and subordinate's cluster is only achieved that with a set of client.By by configuration information
It is maintained into ZooKeeper, and monitors nodal value variation in real time with monitor, it is ingenious to have used ZooKeeper that pass through monitoring
The characteristics of device is monitored in real time is rapidly completed the switching of principal and subordinate's cluster, switching can still be rapidly completed when client terminal quantity is huge.
Fig. 7 is the schematic diagram of the main modular of the device of principal and subordinate's cluster switching according to an embodiment of the present invention.Such as Fig. 7 institute
Show, the device of principal and subordinate's cluster switching of the embodiment of the present invention includes:
For creating back end corresponding data section is written in the configuration information of main cluster by creation and writing module 701
In the nodal value of point.Configuration information is uniformly maintained into the back end created in ZooKeeper in embodiment.
Modified module 702, for when needing to carry out the switching of principal and subordinate's cluster, the nodal value of the back end to be revised as
The configuration information of to be switched slave cluster.When main clustering fault or main cluster need to carry out upgrade maintenance, led
Switch from cluster.Here two kinds of scenes are considered, it is to be switched from collection one is manually nodal value is revised as by maintenance personnel
The configuration information of group, triggering cluster switching.Another kind is that main clustering fault is observed from cluster, itself will configure write-in section automatically
In point value, triggering cluster switching.
Whether monitoring and modification link module 703, the nodal value for monitoring the back end change, and work as monitoring
After changing to the nodal value, the to be switched configuration information from cluster is obtained, according to the configuration information got
It modifies the client and is directed toward the link of cluster to realize the switching of principal and subordinate's cluster.It can be with ZooKeeper in embodiment
The characteristics of being monitored in real time by Watcher, client is by the variation of Watcher monitoring the process nodal value, when monitoring node
After value changes, modification client is directed toward the link of cluster, the principal and subordinate's cluster switching being automatically performed.After the completion of switching, monitor
Process continues to monitor whether modified nodal value changes.
From the above, it can be seen that by the way that configuration information is maintained into back end, client monitors back end
Nodal value variation obtains configuration information and modifies the link of client to cluster, only use after monitoring that nodal value changes
A set of client is achieved that the online switching of principal and subordinate's cluster.By the way that configuration information is maintained into ZooKeeper, and with monitor
Device monitors nodal value variation in real time, ingenious the characteristics of having used ZooKeeper that can monitor in real time by monitor, master is rapidly completed
Switch from cluster, switching can still be rapidly completed when client terminal quantity is huge.
Fig. 8 is shown can be using the device for the method or the switching of principal and subordinate's cluster that principal and subordinate's cluster of the embodiment of the present invention switches
Exemplary system architecture 800.
As shown in figure 8, system architecture 800 may include terminal device 801,802,803, network 804 and server 805.
Network 804 between terminal device 801,802,803 and server 805 to provide the medium of communication link.Network 804 can be with
Including various connection types, such as wired, wireless communication link or fiber optic cables etc..
User can be used terminal device 801,802,803 and be interacted by network 804 with server 805, to receive or send out
Send message etc..Various telecommunication customer end applications, such as the application of shopping class, net can be installed on terminal device 801,802,803
(merely illustrative) such as the application of page browsing device, searching class application, instant messaging tools, mailbox client, social platform softwares.
Terminal device 801,802,803 can be the various electronic equipments with display screen and supported web page browsing, packet
Include but be not limited to smart phone, tablet computer, pocket computer on knee and desktop computer etc..
Server 805 can be to provide the server of various services, such as utilize terminal device 801,802,803 to user
Generated click event provides the back-stage management server (merely illustrative) supported.Back-stage management server can be to receiving
The data such as click data, content of text analyze etc. processing, and (such as target push information, product are believed by processing result
Breath -- merely illustrative) feed back to terminal device.
It should be noted that the method for the switching of principal and subordinate's cluster provided by the embodiment of the present application is generally by 805 He of server
Terminal device 801,802,803 executes, and correspondingly, the device of principal and subordinate's cluster switching is generally positioned at server 805 and terminal is set
In standby 801,802,803.
It should be understood that the number of terminal device, network and server in Fig. 8 is only schematical.According to realization need
It wants, can have any number of terminal device, network and server.
According to an embodiment of the invention, the present invention also provides a kind of electronic equipment and a kind of computer-readable medium.
Electronic equipment of the invention includes: one or more processors；Storage device, for storing one or more journeys
Sequence, when one or more of programs are executed by one or more of processors, so that one or more of processors are real
A kind of method of principal and subordinate's cluster switching of the existing embodiment of the present invention.
Computer-readable medium of the invention is stored thereon with computer program, real when described program is executed by processor
A kind of method of principal and subordinate's cluster switching of the existing embodiment of the present invention.
Below with reference to Fig. 9, it illustrates the computer systems 900 for the terminal device for being suitable for being used to realize the embodiment of the present invention
Structural schematic diagram.Terminal device shown in Fig. 9 is only an example, function to the embodiment of the present invention and should not use model
Shroud carrys out any restrictions.
As shown in figure 9, computer system 900 includes central processing unit (CPU) 901, it can be read-only according to being stored in
Program in memory (ROM) 902 or be loaded into the program in random access storage device (RAM) 903 from storage section 908 and
Execute various movements appropriate and processing.In RAM 903, also it is stored with system 900 and operates required various programs and data.
CPU 901, ROM 902 and RAM 903 are connected with each other by bus 904.Input/output (I/O) interface 905 is also connected to always
Line 904.
I/O interface 905 is connected to lower component: the importation 906 including keyboard, mouse etc.；It is penetrated including such as cathode
The output par, c 907 of spool (CRT), liquid crystal display (LCD) etc. and loudspeaker etc.；Storage section 908 including hard disk etc.；
And the communications portion 909 of the network interface card including LAN card, modem etc..Communications portion 909 via such as because
The network of spy's net executes communication process.Driver 910 is also connected to I/O interface 905 as needed.Detachable media 911, such as
Disk, CD, magneto-optic disk, semiconductor memory etc. are mounted on as needed on driver 910, in order to read from thereon
Computer program be mounted into storage section 908 as needed.
Particularly, disclosed embodiment, the process of key step figure description above may be implemented as counting according to the present invention
Calculation machine software program.For example, embodiment disclosed by the invention includes a kind of computer program product comprising be carried on computer
Computer program on readable medium, the computer program include the program code for method shown in execution flow chart.?
In such embodiment, which can be downloaded and installed from network by communications portion 909, and/or from can
Medium 911 is dismantled to be mounted.When the computer program is executed by central processing unit (CPU) 901, system of the invention is executed
The above-mentioned function of middle restriction.
It should be noted that computer-readable medium shown in the present invention can be computer-readable signal media or meter
Calculation machine readable storage medium storing program for executing either the two any combination.Computer readable storage medium for example can be --- but not
Be limited to --- electricity, magnetic, optical, electromagnetic, infrared ray or semiconductor system, device or device, or any above combination.Meter
The more specific example of calculation machine readable storage medium storing program for executing can include but is not limited to: have the electrical connection, just of one or more conducting wires
Taking formula computer disk, hard disk, random access storage device (RAM), read-only memory (ROM), erasable type may be programmed read-only storage
Device (EPROM or flash memory), optical fiber, portable compact disc read-only memory (CD-ROM), light storage device, magnetic memory device,
Or above-mentioned any appropriate combination.In the present invention, computer readable storage medium can be it is any include or storage journey
The tangible medium of sequence, the program can be commanded execution system, device or device use or in connection.And at this
In invention, computer-readable signal media may include in a base band or as carrier wave a part propagate data-signal,
Wherein carry computer-readable program code.The data-signal of this propagation can take various forms, including but unlimited
In electromagnetic signal, optical signal or above-mentioned any appropriate combination.Computer-readable signal media can also be that computer can
Any computer-readable medium other than storage medium is read, which can send, propagates or transmit and be used for
By the use of instruction execution system, device or device or program in connection.Include on computer-readable medium
Program code can transmit with any suitable medium, including but not limited to: wireless, electric wire, optical cable, RF etc. are above-mentioned
Any appropriate combination.
Key step figure and block diagram in attached drawing, illustrate the system, method and calculating according to various embodiments of the invention
The architecture, function and operation in the cards of machine program product.In this regard, each box in flowchart or block diagram can
To represent a part of a module, program segment or code, a part of above-mentioned module, program segment or code include one or
Multiple executable instructions for implementing the specified logical function.It should also be noted that in some implementations as replacements, box
Middle marked function can also occur in a different order than that indicated in the drawings.For example, two boxes succeedingly indicated
It can actually be basically executed in parallel, they can also be executed in the opposite order sometimes, and this depends on the function involved.
It, can be with holding it is also noted that the combination of each box in block diagram or flow chart and the box in block diagram or flow chart
The dedicated hardware based system of functions or operations as defined in row is realized, or can use specialized hardware and computer instruction
Combination realize.
Being described in module involved in the embodiment of the present invention can be realized by way of software, can also be by hard
The mode of part is realized.Described module also can be set in the processor, for example, can be described as: a kind of processor packet
Include creation and writing module, modified module and monitoring and modification link module.Wherein, the title of these units is under certain conditions
The restriction to the unit itself is not constituted, " creation back end, will for example, dependence packet generation module is also described as
The module in the nodal value of corresponding back end is written in the configuration information of main cluster ".
As on the other hand, the present invention also provides a kind of computer-readable medium, which be can be
Included in equipment described in above-described embodiment；It is also possible to individualism, and without in the supplying equipment.Above-mentioned calculating
Machine readable medium carries one or more program, when said one or multiple programs are executed by the equipment, makes
Obtaining the equipment includes: creation back end, the configuration information of main cluster is written in the nodal value of corresponding back end；When need
When carrying out the switching of principal and subordinate's cluster, the nodal value of the back end is revised as the to be switched configuration information from cluster；Prison
Whether the nodal value for surveying the back end changes, and after monitoring that the nodal value changes, obtains to be switched
From the configuration information of cluster, the client is modified according to the configuration information got and is directed toward the link of cluster to realize
The switching of principal and subordinate cluster.
From the above, it can be seen that by the way that configuration information is maintained into back end, client monitors back end
Nodal value variation obtains configuration information and modifies the link of client to cluster, only use after monitoring that nodal value changes
A set of client is achieved that the online switching of principal and subordinate's cluster.By the way that configuration information is maintained into ZooKeeper, and with monitor
Device monitors nodal value variation in real time, ingenious the characteristics of having used ZooKeeper that can monitor in real time by monitor, master is rapidly completed
Switch from cluster, switching can still be rapidly completed when client terminal quantity is huge.
Method provided by the embodiment of the present invention can be performed in the said goods, has the corresponding functional module of execution method and has
Beneficial effect.The not technical detail of detailed description in the present embodiment, reference can be made to method provided by the embodiment of the present invention.
Above-mentioned specific embodiment, does not constitute a limitation on the scope of protection of the present invention.Those skilled in the art should be bright
It is white, design requirement and other factors are depended on, various modifications, combination, sub-portfolio and substitution can occur.It is any
Made modifications, equivalent substitutions and improvements etc. within the spirit and principles in the present invention, should be included in the scope of the present invention
Within.
Claims (12)
1. a kind of method of principal and subordinate's cluster switching characterized by comprising
Back end is created, the configuration information of main cluster is written in the nodal value of corresponding back end；
When needing to carry out the switching of principal and subordinate's cluster, the nodal value of the back end is revised as the to be switched configuration from cluster
Information；
Whether the nodal value for monitoring the back end changes, after monitoring that the nodal value changes, obtain to
The configuration information of the slave cluster of switching, according to the configuration information got modify the client be directed toward the link of cluster from
And realize the switching of principal and subordinate's cluster.
2. the method according to claim 1, wherein creation back end, comprising: created in ZooKeeper
The back end.
3. method according to claim 1 or 2, which is characterized in that whether the nodal value for monitoring the back end occurs
Variation, comprising: whether changed to back end setting monitor with the nodal value of back end described in real-time monitoring.
4. method according to claim 1 or 2, which is characterized in that whether the nodal value for monitoring the back end occurs
Variation, comprising: the nodal value of the back end is inquired in timing or not timing, and whether more adjacent nodal value twice is identical
To monitor whether the nodal value of the back end changes.
5. the method according to claim 1, wherein the method also includes: in client terminal start-up, obtain institute
The configuration information for stating main cluster creates the link that the client is directed toward cluster according to the configuration information.
6. a kind of device of principal and subordinate's cluster switching characterized by comprising
For creating back end the section of corresponding back end is written in the configuration information of main cluster by creation and writing module
In point value；
Modified module, for the nodal value of the back end being revised as to be switched when needing to carry out the switching of principal and subordinate's cluster
Slave cluster configuration information；
Whether monitoring and modification link module, the nodal value for monitoring the back end change, described when monitoring
After nodal value changes, the to be switched configuration information from cluster is obtained, institute is modified according to the configuration information got
It states client and is directed toward the link of cluster to realize the switching of principal and subordinate's cluster.
7. device according to claim 6, which is characterized in that the creation and writing module are also used to:
The back end is created in ZooKeeper.
8. device according to claim 6 or 7, which is characterized in that the monitoring and modification link module are also used to: right
Whether the back end setting monitor is changed with the nodal value of back end described in real-time monitoring.
9. device according to claim 6 or 7, which is characterized in that the monitoring and modification link module are also used to: fixed
When or not timing inquire the nodal value of the back end, whether more adjacent nodal value twice identical to monitor the number
Whether change according to the nodal value of node.
10. device according to claim 6, which is characterized in that described device further include: creation link module is used for
When client terminal start-up, the configuration information of the main cluster is obtained, the client is created according to the configuration information and is directed toward cluster
Link.
11. a kind of electronic equipment characterized by comprising
One or more processors；
Storage device, for storing one or more programs,
When one or more of programs are executed by one or more of processors, so that one or more of processors are real
Now such as method as claimed in any one of claims 1 to 5.
12. a kind of computer-readable medium, is stored thereon with computer program, which is characterized in that
Such as method as claimed in any one of claims 1 to 5 is realized when described program is executed by processor.
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