CN110377397A - The method of storage application rapid deployment dilatation based on the duplication of empty machine - Google Patents
The method of storage application rapid deployment dilatation based on the duplication of empty machine Download PDFInfo
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- CN110377397A CN110377397A CN201910616079.3A CN201910616079A CN110377397A CN 110377397 A CN110377397 A CN 110377397A CN 201910616079 A CN201910616079 A CN 201910616079A CN 110377397 A CN110377397 A CN 110377397A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45562—Creating, deleting, cloning virtual machine instances
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45575—Starting, stopping, suspending or resuming virtual machine instances
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45595—Network integration; Enabling network access in virtual machine instances
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Abstract
The invention discloses a kind of methods of storage application rapid deployment dilatation based on the duplication of empty machine, include: to be standardized empty machine application program launching and configuration booting application program unified in storage void machine, booting application program will be executed when empty machine starts and start application program automatically；Judge whether source void machine and purpose void machine belong to across computer room duplication, if so, needing to carry out customized mirror image synchronization process；Empty machine automation creates, and in the step, the purpose void machine of configuration consistency is gone out according to the information creating of source void machine；After customized mirror image and ready purpose void machine, start empty machine copy services, in the step, the snapshot document of source void machine, system disk file, data disks file are copied to purpose void machine, the full dose data file and application program of the active empty machine of restarting purpose void equipment.This method can be improved the dilatation of application service transverse direction or improve the timeliness demand of deployment.
Description
Technical field
The present invention relates to cloud computing technical field of virtualization, fast more particularly to a kind of storage application based on the duplication of empty machine
The method of speed deployment dilatation.
Background technique
Relational language is explained:
Using rapid deployment dilatation: application cluster usually contains more empty machines and realizes high availability mechanism, and empty machine is as carrying
The minimum unit of application program means newly-increased empty machine and disposing application program using deployment or dilatation.In one application cluster
Empty machine deploy identical application program, therefore the dilatation of storage cluster can be used duplication storage void machine mode it is real
Existing rapid deployment, without manual intervention and application deployment process intervention.
IaaS:IaaS (Infrastructure as a Service), i.e. infrastructure are serviced.It is supplied to consumer
Service be utilization to all computing basic facilities, including processing CPU, memory, storage, network and other basic calculating moneys
Source, user can dispose and run any software, including operating system and application program.Consumer does not manage or controls any cloud
Computing basic facility, but can control the application of the selection of operating system, memory space, deployment, it is also possible to it obtains conditional
The control of networking component (such as router, firewall, load balancer etc.).
Openstack:Openstack is the cloud computing management platform project of an open source, by nova, neutron,
Several main components such as glance, cinder, which combine, completes specific works.Openstack supports almost all kinds of
Cloud environment, project objective be to provide implement it is simple, can extend, enrich on a large scale, the cloud computing management platform that standard is unified.
Openstack services the solution of (IaaS) by the service of the various complementations facility that provides the foundation, and each service provides
API is to be integrated.
The virtual machine of qemu-kvm:KVM (Kernel-Based Virtual Machine) based on kernel, is in Linux
One loadable module of core is realized by calling Linux core functions itself to the underlying virtual of CPU and the void of memory
Quasi-ization, but kvm cannot simulate I/O device.And QEMU is the simulator and virtual machine monitor of a open source, it can be empty using other
Quasi-ization technology carrys out the virtualization support provided using hardware, creates the virtual machine close to host performance.Kvm is added after qemu
It can be achieved with truly server virtualization, qemu-kvm can realize CPU, memory, the virtualization of the resources such as disk.
Glance:Openstack mirroring service (Glance) is that a set of virtual machine image is searched and searching system, realization are empty
Quasi- machine mirror image management.By Glance, virtual machine image can be stored in a variety of storages, for example, simple file storage or
The storage of person's object.Glance supports the mirror image of multiple format, such as raw, qcow2, iso, vhd.Different mirror images are in Glance
In have unique identification id, identical image file identifies id in different cloud computing environments can generate variation.
Cloud platform open-api: the API that cloud management platform externally provides is using RESTful HTTP as transport protocol, logic
Layer by call the API, it can be achieved that all kinds of resources change, such as void machine inquiry, creation, dilatation.User can directly dock
Cloud platform open-api realizes asset creation, does not need to carry out manual operation on the face of cloud area within a jurisdiction, improves timeliness and artificial
Misuse rate.
Mirror image: mirror image is divided into foundation image and customized mirror image by Openstack, the data of every empty machine actually by
Qemu mirror image chain is constituted.The disk mirroring file of empty machine is stored on host, system disk, data disks, snapshot including empty machine
File, customized mirror image and foundation image.Wherein customized mirror image and foundation image be stored in calculate node /home/
Under the path instance/_base, system disk disk, data disks disk.local, snapshot document be stored in calculate node/
Under the path home/instance/uuid, uuid is the unique identifier of empty machine.
Empty machine duplication: using empty machine A as source void machine, a number of units is copied according to completely the same empty machine B, empty machine B is as mesh
Empty machine.Empty machine B and A CPU having the same, memory, disk, application resource and configuration, without redeploying application, it is only necessary to
Application is restarted on empty machine B or has been configured with using booting self-starting.Furthermore the exclusive empty machine name of empty machine B and IP, with empty machine A
It is different.
In the prior art solution, empty machine copy services are a neutral system components, only can be according to source void machine
Rear end mirror image chain replicated, across computer room mirror image can't be distinguished or participate in the whole process using rapid deployment.Make
The work that new empty machine and application deployment must be created has been fallen on the body of developer (people), and such bring hidden danger has at 4 points:
1, non-unified flow is disposed in the creation and application of empty machine: the creation of void machine relies on Openstack cloud computing platform at present,
And apply deployment to need to automate hair version and support, the two processes are currently without any relevance, and the two processes are cross-platform
It often relates to manually link up cost, causes the waste of manpower and time cost.
2, across computer room scene is not considered in empty machine duplication:, can in order to guarantee business 7*24 for financial level data center
With property and meet the requirement of state supervision correlation RPO, RTO, needs to have that same city calamity is standby or strange land calamity standby host room.The duplication of empty machine according to
Rely in the consistency of rear end mirror image, since two computer rooms need to dispose cloud Guan Pingtai respectively, glance and mirror image rear end store past
Toward being two sets of freestanding environments, will lead to mirror image chain in this way can not be repaired, thus empty machine duplication failure.
3, application operating manually is started to purpose void machine: after the completion of empty machine replicates, although purpose void machine and source void machine
Data and configuration are completely the same, but the starting of application program needs artificial participation, in the process it is possible that mistake.
4, timeliness is unable to satisfy demand: the duplication of void machine is all made of the thought of snapshot recovery at present, in order to meet purpose void
Machine is as consistent with source void machine data as possible, needs to carry out source void machine the snapshot of primary system disk and data, snapshot before duplication
It is transferred to the storage of rear end object；Also need to carry out the recovery of data when creating purpose void machine by snapshot.During this period, snapshot
Creation, transmission and recovery require certain time, and requirement is often unable to satisfy in timeliness.
Above 4 hidden danger can seriously affect the normal maintenance work using rapid deployment, make developer and operation maintenance personnel
It needs to expend very big energy combing application link in the later maintenance system, investigation problem, delays the investigation time.Meanwhile people
Work start application service work for application O&M person itself for and a more time-consuming and laborious thing, be related to
Artificial participation task it is very much, entire change process efficiency can be reduced.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of storage application rapid deployment dilatation based on the duplication of empty machine, can be with
It improves the dilatation of application service transverse direction or improves the timeliness demand of deployment.
To achieve the above object, the present invention provides a kind of sides of storage application rapid deployment dilatation based on the duplication of empty machine
Method, comprising: standardized empty machine application program launching and configuration booting application program unified in storage void machine, empty machine opens
Booting application program will be executed when dynamic and starts application program automatically, and the standard of application program launching is carried out for storage void machine
To change, configuration booting application program or agent self-starting process, the empty machine in empty machine of being unified in trigger the standardization process when restarting,
Guarantee that the processes such as all application programs on empty machine, automation agent can unify pull-up, is done without manual entry void machine
In advance；Judge whether source void machine and purpose void machine belong to across computer room duplication, if so, needing to carry out customized mirror image synchronization process；
Empty machine automation creates, and in the step, the purpose void machine of configuration consistency is gone out according to the information creating of source void machine, which looks into first
Then the configuration information of inquiry source void machine docks cloud platform open-api and completes the creation of purpose void machine, participates in the process without artificial
Any operation；After customized mirror image and ready purpose void machine, start empty machine copy services, in the step, by source void machine
Snapshot document, system disk file, data disks file be copied to purpose void machine, the active empty machine of restarting purpose void equipment it is complete
Measure data file and application program.
Optional or preferred, if source void machine and purpose void machine belong to across computer room duplication, empty machine copy services will be empty
The rear end image file of machine is replicated.Since empty machine replicates the consistency of dependence rear end mirror image, when source void machine and purpose void machine
When being in different cloud computing environments, different mirror image management environment, the empty machine image file between synchronous varying environment is needed, is guaranteed
Rear end mirror image consistency.
Optional or preferred, empty machine application program launching standardization is suitable for tomcat, nginx, automation agent is answered
Use component.Application program launching standardization is applicable to all kinds of mainstream applications components, can be realized by the step and apply journey
Sequence booting self-starting.
Optional or preferred, empty machine automation visioning procedure triggers automatic starting by user.In the empty machine of the starting
In the step of automating visioning procedure, after user's triggering is using rapid deployment dilatation, no longer need to by manually being operated, entirely
Process, which is realized, to be fully automated.
It is optional or preferred, in customized mirror image synchronization process, information is triggered according to user and judges source void machine and purpose
Whether empty machine is in same environment.It can skip the process with environment scene, Cross-environment scene will execute the process.
It is optional or preferred, in empty machine copy services, after receiving user's trigger request, two calculate nodes will be started
Between mirror image transmission, after rear end conditions mirror has, carry out empty machine mirror image chain and repair step, mirror image chain reparation can be judged automatically
Logic is without intervening.
Optional or preferred, booting application program is self-starting script start.sh, and the self-starting script
Start.sh is added to/etc/rc.d/rc.local file in.
It is optional or preferred, in empty machine automation foundation step, according to the information creating of source void machine go out a CPU,
The consistent purpose void machine of memory, storage configuration.
Technical solution provided by the invention has the benefit that
1, be not necessarily to application deployment: in technical solution of the present invention, the application program of newly-increased void machine is not necessarily to redeploy, including
In the whole process of empty machine duplication.Especially for calamity for computer room construction scene, all empty machines of main equipment room storage can be adopted
Copy to calamity standby host room with the modes such as one-to-one, one-to-many, after the completion of empty machine duplication, new void machine can automatic pull-up application program,
The demand using quick dilatation deployment is realized in the field IaaS, is avoided using hair version is repeated, to effectively improve deployment efficiency.
2, automate: in technical solution of the present invention, the creation and duplication of empty machine carry out any hand without application developer
The cooperating of work processing, it is only necessary to which the tool-class for quoting client offer carries out network transmission (such as HTTP request) processing, right
Each operating procedure node carries out ordered processing and corresponding judgement, can complete whole flow process implementation, simplify system variation
The complexity manually participated in the process, to reduce human cost.
3, whole process: in technical solution of the present invention, it is only necessary to input source void machine and purpose void machine name, the customized mirror in rear end
As synchronous, empty machine automation creation, empty machine is replicated, and empty machine application starting whole process standardization is not necessarily to any manual intervention process,
To be truly realized using rapid deployment dilatation whole process.
Detailed description of the invention
Fig. 1 is the process of the method for the storage application rapid deployment dilatation provided in an embodiment of the present invention based on the duplication of empty machine
Figure；
Fig. 2 be it is provided in an embodiment of the present invention based on empty machine duplication storage application rapid deployment dilatation method in make by oneself
The flow chart of adopted mirror image synchronization；
Fig. 3 is empty machine in the method for the storage application rapid deployment dilatation provided in an embodiment of the present invention based on the duplication of empty machine
Automate the flow chart of creation；
Fig. 4 is same machine in the method for the storage application rapid deployment dilatation provided in an embodiment of the present invention based on the duplication of empty machine
The flow chart of empty machine copy services under room scene；
Fig. 5 is in the method for the storage application rapid deployment dilatation provided in an embodiment of the present invention based on the duplication of empty machine across machine
The flow chart of empty machine copy services under room scene.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.Obviously, described embodiment only actually is illustrative or exemplary, never
As to the present invention and its application or any restrictions used.In the following detailed description, many details are proposed, with
Complete understanding of the present invention is just provided.But it will be apparent to those skilled in the art that the present invention can be not
Implement in the case where needing the full details in these details to have appreciated that.The description of embodiment is used for the purpose of below
Of the invention is better understood to provide by the example for showing of the invention.The present invention is never limited to set forth below any
Concrete configuration and algorithm, but cover any of element, component and algorithm under the premise of without departing from the spirit of the present invention and repair
Change, replace and improves.
Further detailed description is done to the present invention combined with specific embodiments below, but embodiments of the present invention are not limited to
This.
As shown in Figure 1, the present embodiment provides a kind of method of storage application rapid deployment dilatation based on the duplication of empty machine, packet
Include following steps:
Step 1, empty machine application program launching standardization is unified in configuration booting application program self-starting foot in storage void machine
This start.sh, and the script is added to/etc/rc.d/rc.local file in, application will be executed after the starting of empty machine
Program self-starting script, starts application program without human intervention.
Step 2, customized mirror image synchronization process should be true according to source, purpose void machine information before the starting of empty machine copy services
Recognize and whether belong to same computer room, if it is across the duplication between computer room, needing to carry out customized mirror image synchronization process；If it is same computer room
Between duplication, then do not need to carry out customized mirror image synchronization.
Step 3, empty machine automates visioning procedure, should be according to the information creating of source void machine before the starting of empty machine copy services
A CPU out, memory, the consistent purpose void machine of storage configuration.Process query source void machine first configures, and then docks cloud platform
Open-api completes the creation of purpose void machine, in the process without manually participating in any operation.
Step 4, empty machine copy services can star empty machine duplication after customized mirror image and ready purpose void machine
Service.The service replicates the snapshot of empty machine, system disk, data disks file, then repairs rear end mirror image chain, completes mirror image
Between fusion, the full dose data file and application program of the active empty machine of the purpose void equipment of pull-up again.
Hereafter by taking application rapid deployment as an example, to the storage application rapid deployment dilatation of the invention based on the duplication of empty machine
Method is specifically described.
As shown in Figure 1, it is the whole process schematic diagram of the storage application rapid deployment expansion method replicated based on empty machine, it should
Process is triggered by user, it is only necessary to which specified source void machine and purpose void machine, user instruction carry out empty machine application program after reaching first
Start normalization step, guarantees all applications booting self-startings of source void machine；Judgement source, purpose void machine are in computer room still across machine
Otherwise room scene can skip the process if will enter customized mirror image synchronization process across computer room；Then start empty machine automation
Visioning procedure creates one according to inquiry open-api result and configures consistent purpose void machine completely with source void machine；Last triggering
Empty machine copy services complete the reparation and starting of purpose void machine mirror image chain, this is accused using rapid deployment and completes.
During Fig. 1 description, empty machine application program launching normalization step can after can guaranteeing to replicate empty machine starting
Automatic pull-up application.By taking tomcat as an example, script start.sh is write, position is /app/start.sh, then opening/etc/
Rc.d/rc.local file finally adds following content/app/start.sh, if comprising a variety of applications or all kinds of agent, it can
Start.sh script is write respectively, and also settable chkconfig opens starting, finally successively replenishes/etc/rc.d/
Rc.local file.
As shown in Fig. 2, in the method for the storage application rapid deployment dilatation of the invention based on the duplication of empty machine, empty machine duplication
When being related to across computer room scene, customized mirror image synchronization process can be triggered.In customized mirror image synchronization process, the mirror of active and standby computer room
It seem separate management, main equipment room uses the mirror image of main equipment room, and standby host room uses the mirror image in standby host room, but empty machine duplication relies on
In the reparation of mirror image chain, so the customized mirror image of source and destination void machine must be consistent, therefore need from main equipment room glance
Middle downloading is customized to be mirrored to local and copies standby host room to, then in uploading to standby host room glance mirror image management assembly,
Although can guarantee source and destination void machine in this way in across computer room scene, the customized mirror image that rear end relies on is actually same
One mirror image.
As shown in figure 3, it is of the invention based on empty machine duplication storage application rapid deployment dilatation method in, empty machine oneself
In dynamicization visioning procedure implementation process, cloud platform open-api will be called twice, calls query interface to carry out source void machine for the first time
The inquiry of configuration information, return information include CPU, memory, storage, the Mirror Info of source void machine；Second of calling creation interface
Carry out the creation of purpose void machine.Detailed open-api interface requests structure and return example are shown in Table 1:
Table 1: cloud platform open-api interface requests structure and return example
As shown in Figure 4, Figure 5, in the method for the storage application rapid deployment dilatation of the invention based on the duplication of empty machine, as before
It is described, foundation image base.img involved in empty machine reproduction process, customized mirror image template.img, snapshot
Snapshot.img, system disk disk, data disks disk.local, wherein data disks file disk.local is raw format mirror
Mirror image chain is not present in picture, so do not need to can be used directly after repairing mirror image chain copy, and other several class qcow2 format mirror images
Empty machine could normally be started after mirror image chain must be repaired.
In the implementation of empty machine copy services, it is classified into same computer room void machine duplication and across computer room void machine replicates two kinds of scenes, together
When being replicated between computer room, as shown in figure 4, including the following steps:
The first step creates empty machine according to the customized mirror image of source void machine in main equipment room, shuts down after the completion；
Second step copies the system disk disk, data disks disk.local, snapshot document snapshot.img of source void machine
Calculate node where to purpose void machine /path home/instance/uuid under；
Third step, since same computer room scene source and destination void machine uses same foundation image and customized mirror image, so
Mirror image chain reparation pertains only to disk, snapshot document.Existing disk file is covered, again the rear end rebase mirror image chain, qemu-img
rebase–u–b snapshot.img disk；
4th step merges disk data to snapshot-img, qemu-img commit disk；
5th step, mv snapshot-img disk, empty machine booting.
When across being replicated between computer room, as shown in figure 5, main equipment room makes since the mirror image of active and standby computer room is separate management
With the mirror image of main equipment room, standby host room uses the mirror image in standby host room, this causes the id of customized mirror image no longer consistent, so rebase
The reparation of mirror image chain is more complicated in the process, specific as follows:
The first step creates empty machine according to the customized mirror image of source void machine in standby host room, shuts down after the completion；
Second step, by the system disk disk of host source of houses void machine, data disks disk.local, snapshot document
Snapshot.img be copied to standby host room calculate node /path home/instance/uuid under, cover existing disk file；
Third step, the rear end rebase mirror image chain again, according to sequencing elder generation rebase snapshot document, in rebase
Disk is ordered as follows:
qemu-img rebase–u–b template-s.img snapshot.img
qemu-img rebase–u–b snapshot.img disk
4th step merges disk data to snapshot-img, qemu-img commit disk；
5th step, mv snapshot-img disk, empty machine booting.
In storage application rapid deployment expansion method based on the duplication of empty machine of the invention, avoided using empty machine reproduction technology
Application repeats to dispose, and compared with tradition is using dilatation or deployment, the process of modification is shown in Table 2 for empty machine reproduction process:
Table 2: the present invention and traditional approach change contrast table
Unless otherwise defined, the technical term or scientific term used herein should be in fields of the present invention and has
The ordinary meaning that the personage of general technical ability is understood.Used in the invention patent description of the invention and claims " the
One ", " second " and similar word are not offered as any sequence, quantity or importance, and are used only to distinguish different
Component part.Equally, the similar word such as "one" or " one " does not indicate that quantity limits yet, but indicates that there are at least one.
The foregoing is merely example embodiments of the present invention, are not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method of the storage application rapid deployment dilatation based on the duplication of empty machine characterized by comprising
Empty machine application program launching is standardized and configuration booting application program unified in storage void machine, when empty machine starts
The booting application program will be executed and start application program automatically；
Judge whether source void machine and purpose void machine belong to across computer room duplication, if so, needing to carry out customized mirror image synchronization process；
Empty machine automation creates, and in the step, the purpose void machine of configuration consistency is gone out according to the information creating of source void machine；
Start empty machine copy services, in the step, the snapshot document of source void machine, system disk file, data disks file are copied to
Purpose void machine, the full dose data file and application program of the active empty machine of restarting purpose void equipment.
2. the method for the storage application rapid deployment dilatation according to claim 1 based on the duplication of empty machine, which is characterized in that
If source void machine and purpose void machine belong to across computer room duplication, empty machine copy services are answered the rear end image file of empty machine
System.
3. the method for the storage application rapid deployment dilatation according to claim 1 based on the duplication of empty machine, which is characterized in that
The void machine application program launching standardization is suitable for tomcat, nginx, automation agent application component.
4. the method for the storage application rapid deployment dilatation according to claim 1 based on the duplication of empty machine, which is characterized in that
The void machine automation visioning procedure triggers automatic starting by user.
5. the method for the storage application rapid deployment dilatation according to claim 1 based on the duplication of empty machine, which is characterized in that
In the customized mirror image synchronization process, information is triggered according to user and judges whether source void machine and purpose void machine are in same environment
In.
6. the method for the storage application rapid deployment dilatation according to claim 1 based on the duplication of empty machine, which is characterized in that
In the void machine copy services, after receiving user's trigger request, the mirror image between two calculate nodes will be started and transmitted, rear end mirror
After slice part has, carries out empty machine mirror image chain and repair step.
7. the method for the storage application rapid deployment dilatation according to claim 1 based on the duplication of empty machine, which is characterized in that
The booting application program is self-starting script start.sh, and self-starting script start.sh is added to/etc/rc.d/
In rc.local file.
8. the method for the storage application rapid deployment dilatation according to claim 1 based on the duplication of empty machine, which is characterized in that
In the empty machine automation foundation step, it is consistent that CPU, memory, a storage configuration are gone out according to the information creating of source void machine
Purpose void machine.
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