CN110392125A - A kind of realize provides the method and system of DHCP service to virtual machine in virtualized environment - Google Patents
A kind of realize provides the method and system of DHCP service to virtual machine in virtualized environment Download PDFInfo
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- CN110392125A CN110392125A CN201910582400.0A CN201910582400A CN110392125A CN 110392125 A CN110392125 A CN 110392125A CN 201910582400 A CN201910582400 A CN 201910582400A CN 110392125 A CN110392125 A CN 110392125A
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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
- G06F9/45504—Abstract machines for programme code execution, e.g. Java virtual machine [JVM], interpreters, emulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/70—Virtual switches
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
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Abstract
The present invention provides a kind of realize and provides the method and system of DHCP service to virtual machine in virtualized environment, opens virtual switch DHCP function and issues a flow table on the virtual switch；IP address information to be allocated is saved in the corresponding virtual port vnport of virtual machine by ordering after virtual machine booting, and IP address information is cached in background program；After the completion of virtual machine booting, DHCP message IP address requesting is sent, the flow table will be sent in controller in DHCP message that the virtual machine issues；Controller handles the DHCP message received, gets IP address information from the program cache, is assembled into DHCP back message, is sent to the virtual machine, realizes the distribution of IP address information.
Description
Technical field
The present invention relates to cloud platform virtual networking fields, and in particular to a kind of to realize to virtual machine in virtualized environment
The method and system of DHCP service are provided.
Background technique
It is served by as cloud computing technology becomes increasingly popular more and more networks, people propose cloud computing platform more next
Higher requirement needs if virtual machine is want to obtain IP by way of distributing automatically in physical network in corresponding network
In establish a Dynamic Host Configuration Protocol server.Dynamic host configuration protocol (Dynamic Host Configuration Protocol,
DHCP) be a local area network network protocol.It refers to controlling one section of IP address range, client logon server by server
When can automatically obtain server distribution IP address and subnet mask.It is equipped with firstly, Dynamic Host Configuration Protocol server must be one
The computer of Windows 2000Server/Advanced Server system；Secondly, serving as the computer of Dynamic Host Configuration Protocol server needs
ICP/IP protocol is installed, and contents such as static ip address, subnet mask, default gateway are set for it.
And in virtualized environment, virtual machine may in different networks, if all establish a void in each network
Quasi- machine is that corresponding network distributes IP, then can each network require such a virtual machine as Dynamic Host Configuration Protocol server, this
Sample not only wastes a large amount of resource, and is also not a nothing the matter to the management of these Dynamic Host Configuration Protocol server.
Summary of the invention
For in virtualized environment, virtual machine may in different networks, if all establish one in each network
Virtual machine be corresponding network distribute IP, then can each network require such a virtual machine as Dynamic Host Configuration Protocol server,
A large amount of resource is not only wasted in this way nor is easy the problem of being managed to these Dynamic Host Configuration Protocol server, and the present invention provides
A kind of realize provides the method and system of DHCP service to virtual machine in virtualized environment.
The technical scheme is that
On the one hand, technical solution of the present invention provides a kind of realize and provides the side of DHCP service to virtual machine in virtualized environment
Method includes the following steps:
It opens virtual switch DHCP function and issues a flow table on the virtual switch；
It is assigned IP address after virtual machine booting and caches IP address information；
Virtual machine sends DHCP message IP address requesting, and the flow table will be sent in DHCP message that the virtual machine issues
In controller；
Controller handles the DHCP message received, and return is assembled into DHCP back message by IP address and is sent to
The distribution of virtual machine realization IP address.
Further, the step of being assigned IP address after virtual machine booting and cached IP address information tool
Body includes:
Virtual port vnport is generated after virtual machine booting；Wherein, each virtual port corresponds to a network interface card of virtual machine；
Each network interface card is assigned an IP address, and the IP address information of distribution is stored in virtual port vnport；
It triggers the virtual port relevant event and the IP address information that virtual port stores is cached to control program.
Further, each network interface card is assigned an IP address, and the IP address information of distribution is stored in this
In the step of virtual port vnport, by calling bottom order that the IP address information of distribution is stored in the virtual port
In the external_id field of vnport.
Further, the virtual machine sends DHCP message IP address requesting, and the flow table issues the virtual machine
DHCP message in the step of being sent to controller, it includes that DHCP DISCOVER includes and DHCP that virtual machine, which sends DHCP message,
REQUEST message.
Further, the controller handles the DHCP message received, returns to IP address and is assembled into DHCP
Back message be sent to the virtual machine realize IP address distribution the step of specifically include:
Controller receives DHCP DISCOVER message, wherein in DHCP DISCOVER message containing the IP being provided with
Location；
Controller whether there is according to the IP address information that the information of program cache inquires corresponding virtual port storage；
If so, being assembled into DHCP OFFER message according to the information inquired returns to request virtual machine；Otherwise it does not respond；
After virtual machine receives DHCP OFFER message, DHCP REQUEST message formal request DHCPOFFER report can be sent
The IP address provided in text；
The DHCP REQUEST message up sending that the flow table issues the virtual machine is to controller；
Controller is deposited after receiving DHCP REQUEST message according to the corresponding virtual port of the information of program cache inquiry
The IP address information of storage whether there is；
It can be used if so, being assembled into DHCP ACK message according to the information inquired and returning to request virtual machine confirmation IP, it is complete
At entire dhcp process.
Second aspect, technical solution of the present invention provide a kind of realize and provide DHCP service to virtual machine in virtualized environment
System, including several server hosts, every server host are provided with several virtual machines, every server host setting
There are one or more virtual switches；
Virtual machine in every server host is connected to the virtual friendship of book server host by virtual port vnport
On changing planes, virtual switch is connect by its uplink with the physical switches except primary server host；
One virtual switch of the system is also connected with a controller；
The virtual switch issues a flow table to the virtual switch after opening DHCP function；
Controller is used for and issues the flow table cooperation on virtual switch, completes turning for control virtual machine DHCP message
Hair realizes the distribution of virtual machine IP address.
Further, the flow table, the DHCP message for issuing all virtual machines connected on virtual switch
On be sent to controller.
Further, the controller returns to IP address and is assembled into for handling the DHCP message received
DHCP back message is sent to the distribution that the virtual machine realizes IP address.
Further, the controller is also used to be stored in the external_id field of virtual port vnport
Middle IP address information is cached to control program；
Controller, it is corresponding according to the IP address information inquiry of control program cache after the DHCP message for being also used to receive
Whether virtual port vnport has the IP address information of the corresponding request virtual machine of storage, does not respond if not, if
Have, corresponding IP address information is taken out into assembling DHCP back message and is sent to the distribution that the virtual machine realizes IP address.
As can be seen from the above technical solutions, the invention has the following advantages that virtual machine DHCP request message is intercepted, so
Afterwards this message up sending to controller, then related IP information is packaged by controller, is assembled into DHCP back message, former
Road returns, and is sent to virtual machine.Realize that virtual machine configures the function of IP address by DHCP.Moreover, in a virtualized environment
In, only pass through a controller, so that it may realize be in virtualized environment all virtual networks virtual machine, configured by DHCP
The function of IP address.Virtual machine in all virtual networks can be allocated IP by a controller, not have to each network
Dynamic Host Configuration Protocol server is all created again.
In addition, design principle of the present invention is reliable, structure is simple, has very extensive application prospect.
It can be seen that compared with prior art, the present invention have substantive distinguishing features outstanding and it is significant ground it is progressive, implementation
Beneficial effect be also obvious.
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, for those of ordinary skill in the art
Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is that provided in an embodiment of the present invention realize provides the system environments of DHCP service to virtual machine in virtualized environment
Schematic diagram.
Fig. 2 is that provided in an embodiment of the present invention realize provides the method signal of DHCP service to virtual machine in virtualized environment
Property flow chart.
Fig. 3 is that controller provided in an embodiment of the present invention carries out processing flow schematic diagram to the DHCP message received.
Fig. 4 is basic DHCP message interactive process flow diagram.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
Embodiment one
As shown in Figure 1 and Figure 2, technical solution of the present invention provides a kind of realize and provides DHCP to virtual machine in virtualized environment
The method of service, includes the following steps:
S1: it opens virtual switch DHCP function and issues a flow table on the virtual switch；
S2: IP address information to be allocated is saved in the corresponding virtual port of virtual machine by ordering after virtual machine booting
Vnport, and IP address information is cached in background program；It should be noted that being generated after virtual machine booting in this step
One virtual port vnport；Wherein, each virtual port corresponds to a network interface card of virtual machine；Each network interface card is assigned an IP
Address, and the IP address information of distribution is stored in virtual port vnport；Further, by calling bottom order handle point
The IP address information matched is stored in the external_id field of virtual port vnport；It is relevant to trigger the virtual port
The IP address information that virtual port stores is cached to control program by event.In the present embodiment, the IP address information includes
IP address, mask, gateway, the information such as DNS.
S3: after the completion of virtual machine booting, DHCP message IP address requesting is sent, the flow table issues the virtual machine
It is sent in controller in DHCP message；It includes that DHCP DISCOVER includes and DHCP REQUEST that virtual machine, which sends DHCP message,
Message；
Herein it should be noted that when if virtual machine sends DHCP message IP address requesting, not by the virtual machine
It is sent in controller in the DHCP message of sending, it is, when virtual switch DHCP function is not turned on, it would not be in the void
Flow table is issued on quasi- interchanger, at this time message is handled by normal DHCP message interactive process；
S4: controller handles the DHCP message received, and IP address letter is got from the program cache
Breath, is assembled into DHCP back message, is sent to the virtual machine, realize the distribution of IP address information.
As shown in figure 3, the specific implementation steps are as follows for this step:
S41: controller receives DHCP DISCOVER message, wherein contains request IP in DHCP DISCOVER message
The vnport information of address virtual machine；
S42: controller inquires what corresponding virtual port stored in the information of program cache according to above-mentioned vnport information
IP address information whether there is；If so, step S43 is executed, if it is not, executing step S48；
S43: DHCP OFFER message is assembled into according to the information inquired and returns to request virtual machine；
S44: after virtual machine receives DHCP OFFER message, DHCP REQUEST message, formal request DHCP are sent
The IP address of offer in OFFER message；
S45: the DHCP REQUEST message up sending that the flow table issues the virtual machine to controller；
S46: controller receives and inquires corresponding virtual terminal according to the information of program cache after DHCP REQUEST message
The IP address information of mouth storage whether there is；If so, step S47 is executed, if it is not, executing step S48；
S47: being assembled into DHCP ACK message according to the information inquired, to return to request virtual machine confirmation IP available, completes
Entire dhcp process；Execute step S49；
S48: it does not respond；
S49: terminate.
As shown in figure 4, in addition, the substantially process for the normal DHCP message interactive process mentioned in step S3 is as follows:
S301: virtual machine sends out a DHCP DISCOVER broadcast packet first, means that I is some address (MAC Address),
Who can distribute an IP address to me.S302: after receiving DHCP DISCOVER broadcast packet, Dynamic Host Configuration Protocol server responds one
DHCP OFFER message, containing can be to information such as the IP address virtually provided in message.S303: DHCP is arrived on virtual machine
After OFFER message, DHCP REQUEST message, the IP address in formal request DHCP OFFER message can be sent to server.
After S304:DHCP server receives DHCP REQUEST message, a DHCP ACK message can be sent to virtual machine, confirm this IP
It can be used.
Method in the embodiment of the present invention intercepts virtual machine DHCP request message, then this message up sending to control
Device, then related IP information is packaged by controller, is assembled into DHCP back message, and backtracking is sent to virtual machine.It is real
Existing virtual machine configures the function of IP address by DHCP.Moreover, in a virtualized environment, as soon as only pass through a controller,
May be implemented be in virtualized environment all virtual networks virtual machine, pass through DHCP configure IP address function.
Embodiment two
Technical solution of the present invention provides a kind of realize and provides the system of DHCP service to virtual machine in virtualized environment, one
In a data center, there are multiple servers host, there is one or more virtual switch in every server host, services
Virtual machine in device host is connected on these virtual switches by virtual port vnport, and virtual switch passes through its uplink
Link is connect with the physical network except server host.Meanwhile be connected with virtual switch there are one controller, control
The effect of device processed is exactly and issues the flow table cooperation on virtual switch, completes the function of control virtual machine message forwarding.In
In the present invention, opening virtual switch DHCP function is using virtual switch as granularity.Meanwhile in a virtual switch
On, user can create multiple networks.A virtual network, the corresponding IP address of the network are created on virtual switch simultaneously
Range, mask, the information such as static routing；Here network is the concept of a logic, and each network corresponds to an IP resource
Pond.As the virtual machine of this network request distribution IP, IP can be taken from the corresponding IP resource pool of this network, be allocated, each master
Because being communicated by double layer network between machine, physical host limitation not will receive.
After a virtual switch opens DHCP function, it can issue in a flow table to the virtual switch, the flow table
Effect be exactly asking of issuing of all virtual machines (in environment as shown in Figure 1) for being connected from this with this virtual switch
Seeking the DHCP message of distribution IP all can be above sent to controller, be handled by controller.
When be connected to have been switched on DHCP service virtual machine booting when, can by the relevant IP of this virtual machine (relevant IP,
The method for being related to being managed IP address, not within the scope of this patent, it is possible to understand that IP is by user (or upper layer thus
Program) assignment of allocation is to this virtual machine), by calling bottom order to be written in virtual port vnport shown in FIG. 1, In
It here is IP address, mask, gateway, the information such as DNS are stored in this field of the external_id of the vnport, this
Sample just by each network interface card of virtual machine and corresponding IP, get up one by one by mapping.And this process of vnport is written, it triggers simultaneously
One Port event can be by the ip information cache saved in the vnport for causing this event to journey after this event occurs
In sequence, wait the virtual machine that DHCP message request IP occurs.
When DHCP message takes place in virtual machine, requests IP, this message can be intercepted by flow table and give controller.Control
Device processed first has to before starting assembling offer/ack message and being responded according to the IP information inquiry pair being cached in program
Either with or without corresponding IP information is stored on the virtual port vnport answered, do not responded if not, if there is if these are believed
Breath takes out, and assembling message is responded.Complete entire dhcp process.
Although by reference to attached drawing and combining the mode of preferred embodiment to the present invention have been described in detail, the present invention
It is not limited to this.Without departing from the spirit and substance of the premise in the present invention, those of ordinary skill in the art can be to the present invention
Embodiment carry out various equivalent modifications or substitutions, and these modifications or substitutions all should in covering scope of the invention/appoint
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention is answered described is with scope of protection of the claims
It is quasi-.
Claims (9)
1. a kind of realize provides the method for DHCP service to virtual machine in virtualized environment, which comprises the steps of:
It opens virtual switch DHCP function and issues a flow table on the virtual switch；
IP address information to be allocated is saved in the corresponding virtual port vnport of virtual machine by ordering after virtual machine booting,
And IP address information is cached in background program；
After the completion of virtual machine booting, DHCP message IP address requesting is sent, the DHCP that the flow table issues the virtual machine is reported
It is sent in controller on text；
Controller handles the DHCP message received, and IP address information is got from the program cache, assembling
At DHCP back message, it is sent to the virtual machine, realizes the distribution of IP address information.
2. according to claim 1 realize provides the method for DHCP service to virtual machine in virtualized environment, feature exists
In IP address information to be allocated is saved in the corresponding virtual port of virtual machine by order after the described virtual machine booting
Vnport, and the step of IP address information is cached in background program specifically includes:
After virtual machine booting, each network interface card generates a corresponding virtual port vnport；
Each network interface card is assigned an IP address, and is issued to backstage by order, and the IP address information of distribution is stored in this
Virtual port vnport；
The preservation action triggers virtual port dependent event in previous step can automatically will when program perceives this event
The IP address information of virtual port storage is cached to control program.
3. according to claim 2 realize provides the method for DHCP service to virtual machine in virtualized environment, feature exists
In IP address information to be allocated is saved in the corresponding virtual port of virtual machine by order after the described virtual machine booting
Vnport, and in the step of IP address information is cached in background program, by calling bottom order the IP address of distribution
Information is stored in the external_id field of virtual port vnport.
4. according to claim 3 realize provides the method for DHCP service to virtual machine in virtualized environment, feature exists
In after the completion of the virtual machine booting, transmission DHCP message IP address requesting, the flow table issues the virtual machine
It is sent in DHCP message in the step in controller, it includes that DHCP DISCOVER includes and DHCP that virtual machine, which sends DHCP message,
REQUEST message.
5. according to claim 4 realize provides the method for DHCP service to virtual machine in virtualized environment, feature exists
In, the controller handles the DHCP message received, IP address information is got from the program cache,
The step of being assembled into DHCP back message, being sent to the virtual machine, realize the distribution of IP address information specifically includes:
Controller receives DHCP DISCOVER message, wherein virtual containing IP address requesting in DHCP DISCOVER message
The vnport information of machine；
Controller inquires the IP address of corresponding virtual port storage according to above-mentioned vnport information in the information of program cache
Information whether there is；
If so, being assembled into DHCP OFFER message according to the information inquired returns to request virtual machine；Otherwise it does not respond；
After virtual machine receives DHCP OFFER message, DHCP REQUEST message is sent, in formal request DHCP OFFER message
The IP address of offer；
The DHCP REQUEST message up sending that the flow table issues the virtual machine is to controller；
Controller receives and inquires corresponding virtual port storage according to the information of program cache after DHCP REQUEST message
IP address information whether there is；
It can be used, complete whole if so, being assembled into DHCP ACK message according to the information inquired and returning to request virtual machine confirmation IP
A dhcp process.
6. a kind of realize provides the system of DHCP service to virtual machine in virtualized environment, it is characterised in that serviced including several
Device host, every server host are provided with several virtual machines, and every server host is provided with one or more virtual friendships
It changes planes；
Virtual machine in every server host is connected to the virtual switch of book server host by virtual port vnport
On, virtual switch is connect by its uplink with the physical switches except primary server host；
One virtual switch of the system is also connected with a controller；
The virtual switch issues a flow table to the virtual switch after opening DHCP function；
Controller is used for and issues the flow table on virtual switch, completes the assembling and response of control virtual machine DHCP message
Realize the distribution of virtual machine IP address.
7. according to claim 6 realize provides the system of DHCP service to virtual machine in virtualized environment, feature exists
In being sent to controller in, the flow table, the DHCP message for issuing all virtual machines connected on virtual switch.
8. according to claim 7 realize provides the system of DHCP service to virtual machine in virtualized environment, feature exists
In controller, for handling the DHCP message received, return IP address is assembled into DHCP back message and is sent to this
The distribution of virtual machine realization IP address.
9. according to claim 8 realize provides the system of DHCP service to virtual machine in virtualized environment, feature exists
In controller is also used to IP address information in the external_id field for being stored in virtual port vnport being cached to control
Processing procedure sequence；
Controller, it is corresponding virtual according to the IP address information inquiry of control program cache after the DHCP message for being also used to receive
Whether port vnport has the IP address information of the corresponding request virtual machine of storage, does not respond if not, if there is if
Corresponding IP address information is taken out, assembling DHCP back message is sent to the virtual machine, realizes the distribution of IP address.
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| CN201910582400.0A CN110392125A (en) | 2019-06-29 | 2019-06-29 | A kind of realize provides the method and system of DHCP service to virtual machine in virtualized environment |
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| CN201910582400.0A CN110392125A (en) | 2019-06-29 | 2019-06-29 | A kind of realize provides the method and system of DHCP service to virtual machine in virtualized environment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908770A (en) * | 2019-11-05 | 2020-03-24 | 安超云软件有限公司 | Operation and creation method of virtual machine, virtual machine and virtual machine management platform |
| CN111756870A (en) * | 2020-06-12 | 2020-10-09 | 浪潮电子信息产业股份有限公司 | IPv6 address configuration method, device, equipment and readable storage medium |
| CN112583947A (en) * | 2020-11-16 | 2021-03-30 | 新华三大数据技术有限公司 | DHCP processing method, device, equipment and machine readable storage medium |
| CN114760269A (en) * | 2022-03-17 | 2022-07-15 | 深信服科技股份有限公司 | Virtual machine address allocation method, device and storage medium |
| CN115987890A (en) * | 2023-03-20 | 2023-04-18 | 苏州浪潮智能科技有限公司 | Cross-cluster virtual IP address access method and device, electronic equipment and storage medium |
-
2019
- 2019-06-29 CN CN201910582400.0A patent/CN110392125A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110908770A (en) * | 2019-11-05 | 2020-03-24 | 安超云软件有限公司 | Operation and creation method of virtual machine, virtual machine and virtual machine management platform |
| CN111756870A (en) * | 2020-06-12 | 2020-10-09 | 浪潮电子信息产业股份有限公司 | IPv6 address configuration method, device, equipment and readable storage medium |
| CN112583947A (en) * | 2020-11-16 | 2021-03-30 | 新华三大数据技术有限公司 | DHCP processing method, device, equipment and machine readable storage medium |
| CN112583947B (en) * | 2020-11-16 | 2022-02-22 | 新华三大数据技术有限公司 | DHCP processing method, device, equipment and machine readable storage medium |
| CN114760269A (en) * | 2022-03-17 | 2022-07-15 | 深信服科技股份有限公司 | Virtual machine address allocation method, device and storage medium |
| CN114760269B (en) * | 2022-03-17 | 2024-04-09 | 深信服科技股份有限公司 | Virtual machine address allocation method, device and storage medium |
| CN115987890A (en) * | 2023-03-20 | 2023-04-18 | 苏州浪潮智能科技有限公司 | Cross-cluster virtual IP address access method and device, electronic equipment and storage medium |
| CN115987890B (en) * | 2023-03-20 | 2023-06-09 | 苏州浪潮智能科技有限公司 | Method, device, electronic equipment and storage medium for cross-cluster access to virtual IP address |
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Application publication date: 20191029 |