CN110413433A - Restoration methods, equipment and storage medium after a kind of Maria DB clustering fault - Google Patents
Restoration methods, equipment and storage medium after a kind of Maria DB clustering fault Download PDFInfo
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- CN110413433A CN110413433A CN201910599752.7A CN201910599752A CN110413433A CN 110413433 A CN110413433 A CN 110413433A CN 201910599752 A CN201910599752 A CN 201910599752A CN 110413433 A CN110413433 A CN 110413433A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0793—Remedial or corrective actions
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Abstract
The invention discloses the restoration methods after a kind of Maria DB clustering fault, comprising steps of whether the node for detecting the cluster is in inactive state；It is in inactive state in response to the node, obtains the state value of each node；Judge whether the multiple state values obtained are equal；It is unequal in response to multiple state values, the size of more multiple state values, to obtain maximum state value；The corresponding node of the maximum state value as cluster promoter and is started；Start other nodes.The invention also discloses a kind of computer equipment and readable storage medium storing program for executing.Method disclosed by the invention can after Maria DB cluster breaks down quick start respective nodes, can ensure that operation system operates normally in time, and the loss of data risk as caused by error starting can also be reduced.
Description
Technical field
The present invention relates to database fields, and in particular to restoration methods, equipment after a kind of Maria DB clustering fault with
And storage medium.
Background technique
Under cloud platform environment, MariaDB is because open source, practical database features are used widely, and MariaDB
Galera Cluster provides a set of high-availability cluster solution.
Due to various reasons it is possible that the case where data-base cluster exception down falls, causes in actual production environment
Cluster can not normally start, if arbitrarily starting is also possible to have the risk of loss of data.
Therefore, be badly in need of it is a kind of after clustering fault how the method for starter node.
Summary of the invention
In view of this, at least one aspect in order to overcome the above problem, the embodiment of the present invention propose a kind of Maria
Restoration methods after DB clustering fault, comprising steps of
Whether the node for detecting the cluster is in inactive state；
It is in inactive state in response to the node, obtains the state value of each node；
Judge whether the multiple state values obtained are equal；
It is unequal in response to multiple state values, the size of more multiple state values, to obtain maximum state
Value；
The corresponding node of the maximum state value as cluster promoter and is started；
Start other nodes.
In some embodiments, it further comprises the steps of:
It is equal in response to multiple state values, judge whether there is gvwstate.dat file；
In response to the gvwstate.dat file is not present, select the node for meeting preset condition as cluster promoter
And start；
Start other nodes.
In some embodiments, it further comprises the steps of:
In response to there are the gvwstate.dat files, joined according to the gvwstate.dat file acquisition my_uuid
Several and view_id parameter, and judge whether there is my_uuid parameter node identical with the view_id parameter；
In response to there are my_uuid parameter nodes identical with view_id parameter, simultaneously using the node as cluster promoter
Starting；
Start other nodes.
In some embodiments, it further comprises the steps of:
In response to my_uuid parameter node identical with view_id parameter is not present, selection meets the node of preset condition
As cluster promoter and start；
Start other nodes.
In some embodiments, it selects the node for meeting preset condition as cluster promoter, further comprises:
The node before the clustering fault as cluster promoter is selected to continue as cluster promoter.
In some embodiments, it further comprises the steps of:
In response to there is the node for being in starting state, the node in inactive state is directly initiated.
In some embodiments, the corresponding node of the maximum state value as cluster promoter and is started, into one
Step includes:
By third parameter configuration to the cluster promoter；
Start the cluster promoter.
In some embodiments, the state value for obtaining each node further comprises:
Extract the grastate.dat file of each node；
The state value of corresponding node is obtained according to each grastate.dat file.
Based on the same inventive concept, according to another aspect of the present invention, the embodiments of the present invention also provide at least one
A processor；And
Memory, the memory are stored with the computer program that can be run on the processor, which is characterized in that institute
The step of stating the restoration methods after executing any Maria DB clustering fault as described above when processor executes described program.
Based on the same inventive concept, according to another aspect of the present invention, the embodiments of the present invention also provide a kind of meters
Calculation machine readable storage medium storing program for executing, the computer-readable recording medium storage have computer program, and the computer program is processed
The step of restoration methods after executing any Maria DB clustering fault as described above when device executes.
The present invention has following advantageous effects: method disclosed by the invention can quickly open after cluster breaks down
Dynamic respective nodes, shorten fault time, can ensure that operation system operates normally in time, and can also reduce due to accidentally opening
Loss of data risk caused by dynamic.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other embodiments are obtained according to these attached drawings.
Fig. 1 is the process signal of the restoration methods after a kind of Maria DB clustering fault that the embodiment of the present invention provides
Figure；
Fig. 2 is the flow diagram of the restoration methods after a kind of Maria DB clustering fault that the embodiment of the present invention provides；
Fig. 3 is the structural schematic diagram for the computer equipment that the embodiment of the present invention provides；
Fig. 4 is the structural schematic diagram for the computer readable storage medium that the embodiment of the present invention provides.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
The embodiment of the present invention is further described in attached drawing.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention
The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " only for the convenience of statement, does not answer
It is interpreted as the restriction to the embodiment of the present invention, subsequent embodiment no longer illustrates this one by one.
It should be noted that MariaDB:MariaDB is the branch of MySQL, it is a kind of PostgreSQL database product.
MariaDB Galera Cluster: a kind of mariadb trunking mode of open source has more holotypes, Neng Goushi
When it is synchronous, be widely applied under cloud platform mode.
Down: service is unavailable.
Cluster promoter: the node is added after other nodes starting later in the node of first starting in cluster.
Grastate.dat file: a file of mariadb cluster system views the nodes records by this document
Uuid and seqno, that is, cluster state numerical value.
Gvwstate.dat file: a file of mariadb cluster system records cluster last state, if section
Point normal switching-off, this document can be deleted.
According to an aspect of the present invention, the embodiment of the present invention proposes the recovery side after a kind of Maria DB clustering fault
Method, as shown in Figure 1, it may include step: whether S1, the node for detecting the cluster are in inactive state；S2, response
It is in inactive state in the node, obtains the state value of each node；S3 judges the multiple shapes obtained
Whether state value is equal；S4, the size of the more multiple state values unequal in response to multiple state values, to obtain most
Big state value；S5 as cluster promoter and starts the corresponding node of the maximum state value；S6 starts other sections
Point.
Method disclosed by the invention can after cluster breaks down quick start respective nodes, shorten fault time,
It can ensure that operation system operates normally in time, and the loss of data risk as caused by error starting can also be reduced.
Below with reference to Fig. 2 shows clustering fault after the flow diagrams of restoration methods be described in detail.
First, it is determined that being in starting state with the presence or absence of node in cluster, namely judge whether that all nodes are in not
At this moment starting state can directly initiate other inactive (down) state sections if there is the node also in starting state
Point.
Which if all nodes of cluster are in down state, at this moment need to be judged according to the state of node, node
Down state is in for the last one.
Specifically, can be by extracting the grastate.dat file of each node, and according to each node
Grastate.dat file, obtains corresponding state (seqno) value, value it is maximum that be exactly the section for being finally at down state
Point namely latest data node, are then configured to the node for relevant parameter, so that the node can be opened as cluster promoter
Dynamic, other nodes normally start.Relevant parameter can be in some embodiments -- wsrep-new-cluster parameter.
If all nodes are in down state simultaneously, corresponding seqno value is all -1 or other equal values, also with regard to nothing
Method judges which node for latest data node, at this moment needs first to judge whether there is gvwstate.dat by comparing state value
File, and if so, can by comparing all nodes gvwstate.dat file in my_uuid and view_id whether
It is identical, the node of two parameters having the same as cluster promoter and is carried -- wsrep-new-cluster parameter opens
Dynamic, other nodes normally start.
If there is no the identical node of my_uuid and view_id the two parameters, then selection meets the section of preset condition
Point is as cluster promoter and carries -- and the starting of wsrep-new-cluster parameter, other nodes normally start.
If there is no gvwstate.dat file, then the node for meeting preset condition is selected as cluster promoter and is taken
Band -- the starting of wsrep-new-cluster parameter, other nodes normally start.
In some embodiments, select the node for meeting preset condition as cluster promoter, further comprise: selection exists
Node before the clustering fault as cluster promoter continues as cluster promoter.Namely continues selection and be before
The node of cluster promoter is as new cluster promoter.
The present invention passes through in gvwstate.dat and grastate.dat in mariadb galera cluster cluster
Parameter value judge the state of cluster, find out the newest node of state and carried as cluster promoter -- wsrep-new-
The starting of cluster parameter, other nodes normally start.Can after cluster breaks down quick start respective nodes, shorten
Fault time can ensure that operation system operates normally in time, and can also reduce the loss of data as caused by error starting
Risk.
Based on the same inventive concept, according to another aspect of the present invention, as shown in figure 3, the embodiment of the present invention also mentions
Supply a kind of computer equipment 501, comprising:
At least one processor 520；And
Memory 510, memory 510 are stored with the computer program 511 that can be run on a processor, and processor 520 is held
The step of restoration methods after executing any Maria DB clustering fault as above when line program.
Based on the same inventive concept, according to another aspect of the present invention, as shown in figure 4, the embodiment of the present invention also mentions
A kind of computer readable storage medium 601 is supplied, computer readable storage medium 601 is stored with computer program instructions 610, meter
The step of the restoration methods after any Maria DB clustering fault as above is executed when calculation machine program instruction 610 is executed by processor
Suddenly.
Finally, it should be noted that those of ordinary skill in the art will appreciate that realizing the whole in above-described embodiment method
Or part process, related hardware can be instructed to complete by computer program, program to can be stored in one computer-readable
It takes in storage medium, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, storage medium
It can be magnetic disk, CD, read-only memory (ROM) or random access memory (RAM) etc..The implementation of above-mentioned computer program
Example, can achieve the identical or similar effect of corresponding aforementioned any means embodiment.
In addition, typically, device disclosed by the embodiments of the present invention, equipment etc. can be various electric terminal equipments, such as hand
Machine, personal digital assistant (PDA), tablet computer (PAD), smart television etc., are also possible to large-scale terminal device, such as server
Deng, therefore protection scope disclosed by the embodiments of the present invention should not limit as certain certain types of device, equipment.The present invention is implemented
Client disclosed in example, which can be, is applied to any one of the above electricity with the combining form of electronic hardware, computer software or both
In sub- terminal device.
In addition, disclosed method is also implemented as the computer program executed by CPU according to embodiments of the present invention, it should
Computer program may be stored in a computer readable storage medium.When the computer program is executed by CPU, the present invention is executed
The above-mentioned function of being limited in method disclosed in embodiment.
In addition, above method step and system unit also can use controller and for storing so that controller is real
The computer readable storage medium of the computer program of existing above-mentioned steps or Elementary Function is realized.
In addition, it should be appreciated that the computer readable storage medium (for example, memory) of this paper can be volatibility and deposit
Reservoir or nonvolatile memory, or may include both volatile memory and nonvolatile memory.As an example and
Unrestricted, nonvolatile memory may include read-only memory (ROM), programming ROM (PROM), electrically programmable ROM
(EPROM), electrically erasable programmable ROM (EEPROM) or flash memory.Volatile memory may include that arbitrary access is deposited
Reservoir (RAM), the RAM can serve as external cache.As an example and not restrictive, RAM can be with a variety of
Form obtains, such as synchronous random access memory (DRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM (DDR
SDRAM), enhance SDRAM (ESDRAM), synchronization link DRAM (SLDRAM) and directly Rambus RAM (DRRAM).Institute is public
The storage equipment for the aspect opened is intended to the memory of including but not limited to these and other suitable type.
Those skilled in the art will also understand is that, various illustrative logical blocks, mould in conjunction with described in disclosure herein
Block, circuit and algorithm steps may be implemented as the combination of electronic hardware, computer software or both.It is hard in order to clearly demonstrate
This interchangeability of part and software, with regard to various exemplary components, square, module, circuit and step function to its into
General description is gone.This function is implemented as software and is also implemented as hardware depending on concrete application and application
To the design constraint of whole system.The function that those skilled in the art can realize in various ways for every kind of concrete application
Can, but this realization decision should not be interpreted as causing a departure from range disclosed by the embodiments of the present invention.
Various illustrative logical blocks, module and circuit, which can use, in conjunction with described in disclosure herein is designed to
The following component of function here is executed to realize or execute: general processor, digital signal processor (DSP), dedicated integrated electricity
It is road (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete
Any combination of hardware component or these components.General processor can be microprocessor, but alternatively, processor can
To be any conventional processors, controller, microcontroller or state machine.Processor also may be implemented as calculating the group of equipment
Close, for example, the combination of DSP and microprocessor, multi-microprocessor, one or more microprocessors combination DSP and/or it is any its
Its this configuration.
The step of method in conjunction with described in disclosure herein or algorithm, can be directly contained in hardware, be held by processor
In capable software module or in combination of the two.Software module may reside within RAM memory, flash memory, ROM storage
Device, eprom memory, eeprom memory, register, hard disk, removable disk, CD-ROM or known in the art it is any its
In the storage medium of its form.Illustrative storage medium is coupled to processor, enables a processor to from the storage medium
Information is written to the storage medium in middle reading information.In an alternative, storage medium can be integral to the processor
Together.Pocessor and storage media may reside in ASIC.ASIC may reside in user terminal.In an alternative
In, it is resident in the user terminal that pocessor and storage media can be used as discrete assembly.
In one or more exemplary designs, function can be realized in hardware, software, firmware or any combination thereof.
If realized in software, can using function as one or more instruction or code may be stored on the computer-readable medium or
It is transmitted by computer-readable medium.Computer-readable medium includes computer storage media and communication media, which is situated between
Matter includes any medium for helping for computer program to be transmitted to another position from a position.Storage medium can be energy
Any usable medium being enough accessed by a general purpose or special purpose computer.As an example and not restrictive, the computer-readable medium
It may include that RAM, ROM, EEPROM, CD-ROM or other optical disc memory apparatus, disk storage equipment or other magnetic storages are set
It is standby, or can be used for carrying or storage form be instruct or the required program code of data structure and can by general or
Special purpose computer or any other medium of general or specialized processor access.In addition, any connection can suitably claim
For computer-readable medium.For example, if using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or all
It is if the wireless technology of infrared ray, radio and microwave to send software from website, server or other remote sources, then above-mentioned coaxial
Cable, fiber optic cable, twisted pair, DSL or such as wireless technology of infrared ray, radio and microwave are included in determining for medium
Justice.As used herein, disk and CD include compact disk (CD), it is laser disk, CD, digital versatile disc (DVD), soft
Disk, Blu-ray disc, wherein disk usually magnetically reproduce data, and CD using laser optics reproduce data.Above content
Combination should also be as being included in the range of computer-readable medium.
It is exemplary embodiment disclosed by the invention above, it should be noted that in the sheet limited without departing substantially from claim
Under the premise of inventive embodiments scope of disclosure, it may be many modifications and modify.According to open embodiment described herein
The function of claim to a method, step and/or movement be not required to the execution of any particular order.In addition, although the present invention is implemented
Element disclosed in example can be described or be required in the form of individual, but be unless explicitly limited odd number, it is understood that be multiple.
It should be understood that it is used in the present context, unless the context clearly supports exceptions, singular " one
It is a " it is intended to also include plural form.It is to be further understood that "and/or" used herein refers to including one or one
Any and all possible combinations of a above project listed in association.
It is for illustration only that the embodiments of the present invention disclose embodiment sequence number, does not represent the advantages or disadvantages of the embodiments.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
Complete, relevant hardware can also be instructed to complete by program, program can store in a kind of computer-readable storage
In medium, storage medium mentioned above can be read-only memory, disk or CD etc..
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that range disclosed by the embodiments of the present invention (including claim) is limited to these examples；In the think of of the embodiment of the present invention
Under road, it can also be combined between the technical characteristic in above embodiments or different embodiments, and there is this hair as above
Many other variations of the different aspect of bright embodiment, for simplicity, they are not provided in details.Therefore, all in the present invention
Within the spirit and principle of embodiment, any omission, modification, equivalent replacement, improvement for being made etc. be should be included in of the invention real
It applies within the protection scope of example.
Claims (10)
1. the restoration methods after a kind of Maria DB clustering fault, comprising steps of
Whether the node for detecting the cluster is in inactive state；
It is in inactive state in response to the node, obtains the state value of each node；
Judge whether the multiple state values obtained are equal；
It is unequal in response to multiple state values, the size of more multiple state values, to obtain maximum state value；
The corresponding node of the maximum state value as cluster promoter and is started；
Start other nodes.
2. the method as described in claim 1, which is characterized in that further comprise the steps of:
It is equal in response to multiple state values, judge whether there is gvwstate.dat file；
In response to the gvwstate.dat file is not present, the node for meeting preset condition is selected as cluster promoter and is opened
It is dynamic；
Start other nodes.
3. method according to claim 2, which is characterized in that further comprise the steps of:
In response to there are the gvwstate.dat file, according to the gvwstate.dat file acquisition my_uuid parameter with
View_id parameter, and judge whether there is my_uuid parameter node identical with the view_id parameter；
In response to there are my_uuid parameter node identical with view_id parameter, which as cluster promoter and is opened
It is dynamic；
Start other nodes.
4. method as claimed in claim 3, which is characterized in that further comprise the steps of:
In response to my_uuid parameter node identical with view_id parameter is not present, select to meet the node of preset condition as
Cluster promoter simultaneously starts；
Start other nodes.
5. method as claimed in claim 4, which is characterized in that select to meet the node of preset condition as cluster promoter,
Further comprise:
The node before the clustering fault as cluster promoter is selected to continue as cluster promoter.
6. the method as described in claim 1, which is characterized in that further comprise the steps of:
In response to there is the node for being in starting state, the node in inactive state is directly initiated.
7. the method as described in claim 1, which is characterized in that mass-sended using the corresponding node of the maximum state value as collection
It plays people and starts, further comprise:
By wsrep-new-cluster parameter configuration to the cluster promoter；
Start the cluster promoter.
8. the method as described in claim 1, which is characterized in that the state value for obtaining each node further comprises:
Extract the grastate.dat file of each node；
The state value of corresponding node is obtained according to each grastate.dat file.
9. a kind of computer equipment, comprising:
At least one processor；And
Memory, the memory are stored with the computer program that can be run on the processor, which is characterized in that the place
Manage the method executed as described in claim 1-8 any one when device executes described program.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In perform claim requires method described in 1-8 any one when the computer program is executed by processor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910599752.7A CN110413433A (en) | 2019-07-04 | 2019-07-04 | Restoration methods, equipment and storage medium after a kind of Maria DB clustering fault |
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| CN201910599752.7A CN110413433A (en) | 2019-07-04 | 2019-07-04 | Restoration methods, equipment and storage medium after a kind of Maria DB clustering fault |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090564A (en) * | 2019-12-17 | 2020-05-01 | 苏州浪潮智能科技有限公司 | Method, device and medium for acquiring node network time delay |
| CN111090537A (en) * | 2019-12-16 | 2020-05-01 | 无锡华云数据技术服务有限公司 | Cluster starting method and device, electronic equipment and readable storage medium |
| CN111367998A (en) * | 2020-03-04 | 2020-07-03 | 安超云软件有限公司 | Database cluster recovery method based on Galera and terminal equipment |
| CN112468330A (en) * | 2020-11-13 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Method, system, equipment and medium for setting fault node |
-
2019
- 2019-07-04 CN CN201910599752.7A patent/CN110413433A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090537A (en) * | 2019-12-16 | 2020-05-01 | 无锡华云数据技术服务有限公司 | Cluster starting method and device, electronic equipment and readable storage medium |
| CN111090537B (en) * | 2019-12-16 | 2024-02-06 | 无锡华云数据技术服务有限公司 | Cluster starting method and device, electronic equipment and readable storage medium |
| CN111090564A (en) * | 2019-12-17 | 2020-05-01 | 苏州浪潮智能科技有限公司 | Method, device and medium for acquiring node network time delay |
| CN111367998A (en) * | 2020-03-04 | 2020-07-03 | 安超云软件有限公司 | Database cluster recovery method based on Galera and terminal equipment |
| CN112468330A (en) * | 2020-11-13 | 2021-03-09 | 苏州浪潮智能科技有限公司 | Method, system, equipment and medium for setting fault node |
| CN112468330B (en) * | 2020-11-13 | 2022-12-06 | 苏州浪潮智能科技有限公司 | Method, system, equipment and medium for setting fault node |
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Application publication date: 20191105 |