CN106936943A - The distribution method and system of virtual machine address - Google Patents
The distribution method and system of virtual machine address Download PDFInfo
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- CN106936943A CN106936943A CN201710171576.8A CN201710171576A CN106936943A CN 106936943 A CN106936943 A CN 106936943A CN 201710171576 A CN201710171576 A CN 201710171576A CN 106936943 A CN106936943 A CN 106936943A
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- dhcp
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- request message
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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]
Abstract
The invention discloses the distribution method and system of a kind of virtual machine address, it is applied in cloud network environment, cloud network environment includes control node and calculate node, and control node configures DHCP dhcp servers in the distributed virtual router of calculate node, and methods described includes：When the distributed virtual switch of calculate node receives the request message that the virtual machine in calculate node sends, request message is forwarded to tunnel face；When tunnel face detects request message for dhcp request messages, dhcp request messages are intercepted, and dhcp request messages are forwarded to the distributed virtual router of calculate node, for the corresponding address information of dhcp server feedback dhcp request messages in distributed virtual router；Most address information feeds back to virtual machine at last.Not only reduce the flow that virtual machine address assigning process is spent, it is thus also avoided that virtual machine address cannot respond situation about even losing for a long time.
Description
Technical field
The present invention relates to virtual machine technique field, more particularly to a kind of virtual machine address distribution method and system.
Background technology
In traditional cloud network environment, the distribution of the address such as IP address of virtual machine, typically all calculate node is to cloud net
Network node in network environment sends request, dhcp (Dynamic Host Configuration then in network node
Protocol, DHCP) the corresponding virtual machine address of server feedback, to realize the distribution of virtual machine address,
But, there is following a few point defects in the existing virtual machine address method of salary distribution：
1st, the request of virtual machine is first forwarded to network node from across the cloud network environment of calculate node, by network node
Dhcp server return address information, address information reply after again across a network be forwarded back to calculate node, due to network node and
Not in same network, request and address information need across a network to be forwarded to calculate node, cause a large amount of consumings of flow；
2nd, when cloud network environment includes multiple calculate nodes, and virtual machine in each calculate node is simultaneously to network node
During request virtual machine address, due to the processing speed and limited bandwidth of dhcp servers in network node, part is easily caused empty
The address of plan machine request cannot slowly respond, or even lose.
The content of the invention
Distribution method and system it is a primary object of the present invention to propose a kind of virtual machine address, it is intended to solve traditional
The method of salary distribution of virtual machine address, the flow of consuming is larger, and is easily caused virtual machine address response too long, or even lose
Technical problem.
To achieve the above object, a kind of distribution method of virtual machine address that the present invention is provided, methods described is applied to cloud
In network environment, the cloud network environment includes control node and calculate node, and the control node is in the calculate node
DHCP dhcp servers, the distribution method bag of the virtual machine address are configured in distributed virtual router
Include：
The distributed virtual switch of calculate node receives the request message that the virtual machine in the calculate node sends
When, the request message is forwarded to tunnel face；
The distributed virtual switch is right when the tunnel face detects the request message for dhcp request messages
The dhcp request messages are intercepted, and the dhcp request messages are forwarded to the distributed virtual road of the calculate node
By device, for the corresponding address letter of dhcp request messages described in the dhcp server feedbacks in the distributed virtual router
Breath；
In the address information of the dhcp server feedbacks in receiving the distributed virtual router, by the address
Feedback of the information is to the virtual machine.
Preferably, the control node configures dynamic host configuration in the distributed virtual router of the calculate node
The mode of agreement dhcp servers includes：
The control node issues the configuration information of dhcp servers to the agent process of the calculate node, by the meter
The configuration information is issued to the agent process of operator node the bottom data face in distributed virtual router, with described point
Cloth virtual router realizes the configuration of dhcp servers.
Preferably, it is described the step of intercepted to the dhcp request messages before, methods described also includes：
When the request message is forwarded to tunnel face, the distributed virtual switch is described in tunnel face analysis
The type of request message；
If detecting the request message carries dhcp agreements, then it is assumed that the request message is dhcp request messages, and
The step of execution is intercepted to the dhcp request messages.
Preferably, described when the request message is forwarded to tunnel face, the distributed virtual switch is in the tunnel
After the step of type of the request message is analyzed at road junction, methods described also includes：
If detecting the request message does not carry dhcp agreements, the distributed virtual switch is in the tunnel face
The request message is packaged, and the request message after encapsulation is forwarded to other each calculating sections in cloud network environment
Point.
Preferably, the address information of the dhcp server feedbacks in the distributed virtual router is received
When, include the step of the address information is fed back to the virtual machine by the distributed virtual switch：
In the address information of the dhcp server feedbacks in receiving the distributed virtual router, the distribution
The address information is forwarded to tunnel face by virtual switch, and the address information is intercepted in the tunnel face；
After the tunnel face intercepts to the address information, the address information is fed back into the virtual machine.
Additionally, to achieve the above object, the present invention also proposes a kind of distributor of virtual machine address, the system application
In cloud network environment, the cloud network environment includes control node and calculate node, and the control node calculates section described
DHCP dhcp servers, the distributor of the virtual machine address are configured in the distributed virtual router of point
Including：
Forwarding module, during for the request message for receiving the transmission of the virtual machine in the calculate node, by the request
Message is forwarded to tunnel face；
Processing module, for when the tunnel face detects the request message for dhcp request messages, to described
Dhcp request messages are intercepted, and the dhcp request messages are forwarded to the distributed virtual route of the calculate node
Device, for the corresponding address information of dhcp request messages described in the dhcp server feedbacks in the distributed virtual router；
Feedback module, for the address information of the dhcp server feedbacks in the distributed virtual router is received
When, the address information is fed back into the virtual machine.
Preferably, the control node configures dynamic host configuration in the distributed virtual router of the calculate node
The mode of agreement dhcp servers includes：
The control node issues the configuration information of dhcp servers to the agent process of the calculate node, by the meter
The configuration information is issued to the agent process of operator node the bottom data face in distributed virtual router, with described point
Cloth virtual router realizes the configuration of dhcp servers.
Preferably, the system also includes：
Analysis module, for when the request message is forwarded to tunnel face, the analysis request to be reported in the tunnel face
The type of text；
If detecting the request message carries dhcp agreements, then it is assumed that the request message is dhcp request messages, and
Perform the operation of the processing module.
Preferably, the processing module, does not carry dhcp agreements, described if being additionally operable to detect the request message
Tunnel face is packaged to the request message, and by the request message after encapsulation be forwarded in cloud network environment other each
Calculate node.
Preferably, the feedback module includes：
Forwarding interception unit, for the address of the dhcp server feedbacks in the distributed virtual router is received
During information, the address information is forwarded to tunnel face, and the address information is intercepted in the tunnel face；
Feedback unit, for after the tunnel face intercepts to the address information, by address information feedback
To the virtual machine.
The distribution method and system of virtual machine address proposed by the present invention, it is empty in the distribution of calculate node by control node
Intend configuring DHCP dhcp servers in router, when the distributed virtual switch of calculate node receives institute
When stating the request message that the virtual machine in calculate node sends, the request message is first forwarded to tunnel face, then described
When tunnel face detects the request message for dhcp request messages, the dhcp request messages are intercepted, and will be described
Dhcp request messages are forwarded to the distributed virtual router of the calculate node, in the distributed virtual router
The corresponding address information of dhcp request messages described in dhcp server feedbacks, is finally receiving the distributed virtual router
In dhcp server feedbacks address information when, the address information is fed back into the virtual machine, with realize virtual machine ground
The configuration of location.In the present invention, the distribution of virtual machine address is realized, Wu Xuzai by the built-in dhcp servers of calculate node
Across a network is distributed, and not only reduces the flow that virtual machine address assigning process is spent, it is thus also avoided that virtual machine address is for a long time
Situation about even losing cannot be responded.
Brief description of the drawings
Fig. 1 is the distribution schematic diagram of virtual machine address in the prior art；
Fig. 2 is the integrated stand composition of cloud network environment of the present invention；
Fig. 3 is the schematic flow sheet of the distribution method first embodiment of virtual machine address of the present invention；
Fig. 4 is that the address information is fed back to the refinement schematic flow sheet of the virtual machine in Fig. 3；
Fig. 5 is the high-level schematic functional block diagram of the distribution system first embodiment of virtual machine address of the present invention；
Fig. 6 is the refinement high-level schematic functional block diagram of feedback module in Fig. 5.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Reference picture 1, Fig. 1 is the distribution schematic diagram of virtual machine address in the prior art.
As shown in figure 1, when the corresponding dhcp server of the subnet 10.0.0.0/16 of calculate node are transported according to scheduling result
Row has the substantial amounts of virtual machine to need to dhcp server application virtual machine address simultaneously on network node A, in calculate node, such as
IP address, now to network node transmission message, message needs by tunnel to this big two layers of virtual net each virtual machine
Network is broadcasted to be sent in network node A, and then network node A can receive the message of substantial amounts of virtual machine, due to dhcp
Processing speed and the bandwidth limitation of server, it is impossible to processing so many messages at the same time, partial virtual machine can be caused
Lose the problem of IP.Meanwhile, this broadcasting packet easily causes " broadcast storm " in this big two layers subnet, that is, expend big
The flow of amount, influences other normal service traffics.
Based on the problem that prior art is present, the solution of the embodiment of the present invention is mainly：The distribution of calculate node
When virtual switch receives the request message that the virtual machine in the calculate node sends, first the request message is forwarded to
Tunnel face；When the tunnel face detects the request message for dhcp request messages, the dhcp request messages are carried out
Intercept, and the dhcp request messages are forwarded to the distributed virtual router of the calculate node, for the distribution
The corresponding address information of dhcp request messages described in dhcp server feedbacks in virtual router；Receiving the distribution
During the address information of the dhcp server feedbacks in virtual router, the address information is fed back into the virtual machine.To solve
The certainly method of salary distribution of conventional virtual machine address, the flow of consuming is larger, and is easily caused virtual machine address response too long, or even
The problem of loss.
The present invention provides a kind of distribution method of virtual machine address.
In the present embodiment, methods described is applied in cloud network environment, the cloud network environment include control node and
Calculate node, the control node configures DHCP in the distributed virtual router of the calculate node
Dhcp servers, the distribution method of the virtual machine address includes：
The distributed virtual switch of calculate node receives the request message that the virtual machine in the calculate node sends
When, the request message is forwarded to tunnel face；The distributed virtual switch detects the request in the tunnel face
When message is dhcp request messages, the dhcp request messages are intercepted, and the dhcp request messages are forwarded to institute
The distributed virtual router of calculate node is stated, for described in the dhcp server feedbacks in the distributed virtual router
The corresponding address information of dhcp request messages；The ground of the dhcp server feedbacks in the distributed virtual router is received
During the information of location, the address information is fed back into the virtual machine.
In the present embodiment, technical term introduction is first carried out：
Distributed virtual router：Distribute virtual router (abbreviation dvr), in cloud network environment
It is middle to realize across the forwarding of three layer datas；
The distributed virtual switch：Distribute virtual switch (abbreviation dvswitch), in cloud environment
In realize data forwarding in big two layers；
Tunnel：Overlay (covering) technology in the distributed virtual switch, realizes across the physical network realization of virtual network
Two layers of transmission.
To be best understood from the present embodiment, reference picture 2 first introduces the overall architecture of the present embodiment cloud network environment.
In the present embodiment, the cloud network environment includes control node (not shown), calculate node (including calculate node A
With calculate node B), network node (network node A) and physical network.Calculate node inside includes multiple subnets, and (figure is not
Show), each subnet includes multiple virtual machines, therefore calculate node includes multiple virtual machines, and calculate node also includes distribution
Formula virtual machine interchanger (dvswitch) and distributed virtual router (dvr).Network node includes virtual machine interchanger and side
Boundary's router.
As shown in Fig. 2 having a tunnel face, tunnel on the distributed virtual machine interchanger of calculate node and network node
Mouth is used for data forwarding and data receiver in node and between node, when data are carried out between the individual nodes by tunnel face
During forwarding, in addition it is also necessary to forwarded via physical network.
In the present embodiment, the number of the calculate node and network node all includes multiple, and concrete numerical value is not limited,
Because calculate node includes multiple virtual machines, therefore the number of calculate node is preferably above the number of network node.
In the present embodiment, control node is used to configure dhcp servers to calculate node, and monitors each calculate node
Health status；When the message that network node is used in calculate node is non-dhcp protocol massages, calculate node is sent
Message is processed；Calculate node is used to distribute address information to internal virtual machine, and in the present embodiment, the address information is excellent
Elect IP address as, address information hereinafter is hereafter repeated no more all referring to IP address.
In the present embodiment, before calculate node is to virtual machine distribution address information, section is first being calculated by control node
Dhcp servers are configured in point.The control node configures DynamicHost in the distributed virtual router of the calculate node
The mode of configuration protocol dhcp servers includes：
The control node issues the configuration information of dhcp servers to the agent process of the calculate node, by the meter
The configuration information is issued to the agent process of operator node the bottom data face in distributed virtual router, with described point
Cloth virtual router realizes the configuration of dhcp servers.
Wherein, the agent process (Dhcp agent) is a process for operating in network node or calculate node,
It is an agency of bottom data face and control node (Server) communication, and it passes through RPC (Remote Procedure
Call Protocol, remote procedure call protocol) receive the configuration information of the dhcp devices service that control node issues, it is described
Configuration information includes：Dhcp address pools, CIDR (Classless Inter-Domain Routing, without routing between type field),
Mask, gateway, dns (Domain Name System, domain name system) etc., are then handed down to bottom data face by configuration information.
It should be appreciated that the bottom data face is in the distributed virtual router of calculate node, therefore, work as control node
Issue the configuration information of dhcp servers to the calculate node agent process when, agent process receives control section by RPC
The configuration information that issues of point, and the configuration information is issued to the bottom data face in distributed virtual router again, with
The distributed virtual router realizes the configuration of dhcp servers.
Further, the agent process in the present embodiment can also periodically be reported and be currently located the strong of calculate node
Health state to control node, for control node by the health status that agent process is reported check calculate node business whether
Normally.When control node does not receive the heartbeat of agent process in prefixed time interval, the prefixed time interval is not limited
Set according to actual conditions, it is believed that the calculate node where the agent process occurs abnormal, it is necessary to be adjusted again to this network
Degree, now, can select a new calculate node for this network provides dhcp services, specifically：The control node will
Each virtual machine (vm) migration, in new calculate node, is the calculate node of failure by new calculate node in the calculate node of failure
In each virtual machine provide dhcp service.
It should be appreciated that in the prior art, if being serviced for calculate node provides dhcp by control node selected network node,
So, when control node is not received by heartbeat that network node reports constantly, it is necessary to reschedule to select to network for a long time
A new node is selected to provide dhcp services for network.In order to avoid network node report it is too frequent, it will usually set certain
Time interval, there is this period " blind area ".When network node occurs exception, it is necessary to wait this section of assay intervals time mistake
Go, control node can just be perceived, then carry out weight scheduling process.When control node is busier, rescheduling can not
Process at once.So in this period dhcp servers be in cannot normal service state, virtual machine in this period
Carry out IP obtain be cannot be successful, so as to have influence on normal business.
And be that calculate node configures dhcp servers by control node in the present embodiment, to realize at each calculate node
The address allocation procedure of the internal virtual machine of reason oneself, it is to avoid the flow that across a network is caused expends, and virtual machine address is long
Time does not respond situation about even losing, and improves the promptness of virtual machine address distribution, saves substantial amounts of flow.Additionally,
The health status of oneself to the control node is periodically reported by the agent process in calculate node, in calculate node failure,
Control node starts new calculate node for the virtual machine in the calculate node of failure continues to service, and is not responding to the normal fortune of business
OK, when preventing calculate node failure, the business paralysis in calculate node, so as to improve the intelligent and High Availabitity of Business Processing
Property.
Reference picture 3, Fig. 3 is the schematic flow sheet of the distribution method first embodiment of virtual machine address of the present invention.
The distribution method of the virtual machine address includes：
Step S10, the distributed virtual switch of calculate node receives the virtual machine transmission in the calculate node
During request message, the request message is forwarded to tunnel face；
In the present embodiment, when the virtual machine inside calculate node initiates request message, request message is reached and calculates section
In the distributed virtual machine interchanger of point, when the distributed virtual switch receives the request message of virtual machine transmission, first will
The request message is forwarded to tunnel face.
Step S20, the distributed virtual switch detects the request message for dhcp is asked in the tunnel face
During message, the dhcp request messages are intercepted, and the dhcp request messages are forwarded to dividing for the calculate node
Cloth virtual router, for dhcp request messages correspondence described in the dhcp server feedbacks in the distributed virtual router
Address information；
It is first right when the distributed virtual switch detects the request message for dhcp request messages in the tunnel face
The dhcp request messages are intercepted, and the dhcp request messages are forwarded to the distributed virtual road of the calculate node
By device, for the corresponding address letter of dhcp request messages described in the dhcp server feedbacks in the distributed virtual router
Breath.
In the present embodiment, dhcp request messages correspondence described in the dhcp server feedbacks in the distributed virtual router
The mode of address information include：
The dhcp that dhcp servers in the distributed virtual router receive the distributed virtual switch transmission please
When seeking message, the identification information of virtual machine is parsed from the dhcp request messages；
Mapping table based on default identification information Yu address information, obtains the address that the identification information for determining determines
Information；
The virtual machine is fed back to using the address information of acquisition as the corresponding address information of the dhcp request messages.
It should be noted that the dhcp servers in the distributed virtual router are to dhcp request message feedback addresses
Before information, the distributed virtual router first starts the dhcp servers in the interior network interface of connection distribution switch,
The dhcp request messages that the distribution switch sends are received with by the dhcp servers for starting.
Step S30, in the address information of the dhcp server feedbacks in receiving the distributed virtual router, will
The address information feeds back to the virtual machine.
The address information of the dhcp server feedbacks in the distributed virtual switch receives distributed virtual router
When, you can the address information is fed back into the virtual machine.
Specifically, reference picture 4, the step S30 includes：
Step S31, in the address information of the dhcp server feedbacks in receiving the distributed virtual router, institute
State the distributed virtual switch and the address information is forwarded to tunnel face, and the address information is carried out in the tunnel face
Intercept；
Step S32, after the tunnel face intercepts to the address information, the address information is fed back to described
Virtual machine.
That is, the distributed virtual switch receives the address of the dhcp server feedbacks in the distributed virtual router
During information, the address information is first forwarded to tunnel face, the address information is intercepted in the tunnel face then,
After the tunnel face intercepts to the address information, then the address information is fed back into the virtual machine, to realize void
The distribution of plan machine address.
The distribution method of the virtual machine address that the present embodiment is proposed, by control node on the distributed virtual road of calculate node
By configuring DHCP dhcp servers in device, when the distributed virtual switch of calculate node receives the meter
During the request message that the virtual machine in operator node sends, the request message is first forwarded to tunnel face, then in the tunnel
When mouth detects the request message for dhcp request messages, the dhcp request messages are intercepted, and by the dhcp
Request message is forwarded to the distributed virtual router of the calculate node, for the dhcp in the distributed virtual router
The corresponding address information of dhcp request messages described in server feedback, finally in the distributed virtual router is received
During the address information of dhcp server feedbacks, the address information is fed back into the virtual machine, to realize virtual machine address
Configuration.In the present invention, the distribution of virtual machine address is realized, without inter-network again by the built-in dhcp servers of calculate node
Network is distributed, and not only reduces the flow that virtual machine address assigning process is spent, it is thus also avoided that virtual machine address is obtained not for a long time
To the situation that response is even lost.
Further, the second embodiment of the distribution method of virtual machine address of the present invention is proposed based on first embodiment,
In the present embodiment, the step of described " being intercepted to the dhcp request messages " before, methods described also includes：
Step A, when the request message is forwarded to tunnel face, the distributed virtual switch is in the tunnel face point
Analyse the type of the request message；
Step B, if detecting the request message carries dhcp agreements, then it is assumed that the request message is that dhcp asks report
Text, and perform the step of being intercepted to the dhcp request messages.
That is, when request message is forwarded to tunnel face, the distributed virtual switch first analyzes institute in the tunnel face
The type of request message is stated, specifically, whether the distributed virtual switch carries dhcp associations in checking the request message
View, if detecting the request message carries dhcp agreements, then it is assumed that the request message is dhcp request messages, and perform it is right
The step of dhcp request messages are intercepted.
Further, after the step A, methods described also includes：
Step C, if detecting the request message does not carry dhcp agreements, the distributed virtual switch is described
Tunnel face is packaged to the request message, and by the request message after encapsulation be forwarded in cloud network environment other each
Calculate node.
I.e. described the distributed virtual switch after the type that the request message is analyzed in the tunnel face, if detecting
The request message does not carry dhcp agreements, illustrates that the request message is not dhcp request messages, now, described distributed empty
Intend interchanger to be packaged the request message in the tunnel face, the request message after encapsulation is then forwarded to cloud network
In other each calculate nodes and other each network nodes in environment, carried out by each node in cloud network environment
Reason.It should be appreciated that other nodes request message after encapsulation being forwarded in cloud network environment, are the equal of the shape to broadcast
Formula is forwarded.
In the present embodiment, when dhcp agreements are carried in being forwarded to tunnel face request message, the distributed virtual switch
The request message is just intercepted, by being replied in the distributed virtual router in calculate node, to avoid the consuming of flow.When
When request message does not carry dhcp agreements, just according to normal flow, it is sent to other nodes and is processed, improves message
What is processed is intelligent.
To be best understood from the present embodiment, with continued reference to Fig. 2 in detail, the virtual machine address configuration process of the present embodiment, such as Fig. 2 are described in detail
It is shown, by taking calculate node A as an example：
1st, when the virtual machine in calculate node A sends broadcasting packet, broadcasting packet first reaches the distributed virtual switch
dvswitch A；
2nd, dvswitch A carry out two layers of forwarding to dhcp broadcasting packets to be forwarded to tunnel, when the forwarding of dhcp broadcasting packets
During to tunnel, dvswitch A are intercepted to broadcasting packet, it is ensured that dhcp flows will not be across main frame, so other calculate nodes
With the broadcast traffic that network node would not receive dhcp；
3rd, dhcp broadcasting packets are transmitted to distributed virtual router dvr by dvswitch A again；
4th, dvr starts dhcp services on the interior network interface of connection dvswitch A, and dhcp reports are replied in the configuration according to subnet
On subnet where the address information to dvswitch A of text；
5th, the address information replied is forwarded on dvswitch, and after being forwarded to tunnel face, dvswitch A are to dhcp
Flow equally intercepted, it is ensured that dhcp flows will not be across main frame；
6th, the address information of interception is fed back to virtual machine by dvswitch A, and virtual machine receives the report of dvswitch A feedbacks
Text, completes dhcp request process.
If it should be appreciated that by the way of traditional, after dhcp broadcasting packets reach tunnel face, dvswitch A do not have
Intercepted, it is necessary to be first packaged to dhcp broadcasting packets, to be forwarded in network node A, by network node A
Corresponding address information is obtained after dvswitch A decapsulations, then transmit into calculate node A after address information is encapsulated,
Distributed to virtual machine after being decapsulated again by calculate node A.
Clearly can be seen that, traditional mode, virtual machine obtains IP and is required for for the encapsulation of dhcp broadcasting packets being first sent to net
Taken, it is necessary to can be only achieved dhcp with 2 dvswitch by the encapsulation and decapsulation in 2 tunnels on the dhcp servers of network node
Business device, not only expends flow, and processing speed is slower, is also easy to the situation that virtual machine address is not responding to even lose occur.
In the present embodiment, original topology is contrasted, network node first does not need dhcp servers, by calculate node
Dvr undertakes the role of dhcp servers, the realization compared to before, it can be found that the scheme of the present embodiment has the following advantages：
1st, each virtual machine obtains IP and only needs to by a dvswitch, it is possible to which message is directly sent into dhcp services
On device, the path of message greatly shortens, and obtains the speed of IP faster, and message need not reduce physical network transmission band across main frame
The unreliability come；
2nd, because in concrete implementation, virtual machine is load balancing in calculate node distribution, so each dhcp takes
The dhcp loads of the virtual machine of business device treatment are also the pressure for greatly alleviating dhcp servers in a balanced way in theory, gently
Loose side obtains the problem of IP to virtual machine under large-scale cloud environment；
3rd, dhcp flows are intercepted by tunnel, and the broadcast traffic of tunnel encapsulation will not be across main frame, it will be apparent that reduce
The flow of the tunnel encapsulation of physical network, optimizes network performance；
4th, dhcp reliabilities of service are greatly improved, after one of calculate node delays machine, for other calculate nodes
Virtual machine dhcp services be do not have it is influential.
In sum, after dhcp server combinations distribution router is realized distribution by the present embodiment, greatly lifting
The efficiency of dhcp server process dhcp messages, while reduce by the dhcp broadcast traffics of tunnel encapsulation, and by distribution
Formula router dvr ensures the highly reliable and High Availabitity of each node dhcp.
The present invention further provides a kind of distribution system of virtual machine address.
The present embodiment proposes a kind of distribution system of virtual machine address, and the system is applied in cloud network environment, described
Cloud network environment includes control node and calculate node, distributed virtual router of the control node in the calculate node
Middle configuration DHCP dhcp servers, the distribution system of the virtual machine address includes：
Forwarding module, during for the request message for receiving the transmission of the virtual machine in the calculate node, by the request
Message is forwarded to tunnel face；
Processing module, for when the tunnel face detects the request message for dhcp request messages, to described
Dhcp request messages are intercepted, and the dhcp request messages are forwarded to the distributed virtual route of the calculate node
Device, for the corresponding address information of dhcp request messages described in the dhcp server feedbacks in the distributed virtual router；
Feedback module, for the address information of the dhcp server feedbacks in the distributed virtual router is received
When, the address information is fed back into the virtual machine.
In the present embodiment, technical term introduction is first carried out：
Distributed virtual router：Distribute virtual router (abbreviation dvr), in cloud network environment
It is middle to realize across the forwarding of three layer datas；
The distributed virtual switch：Distribute virtual switch (abbreviation dvswitch), in cloud environment
In realize data forwarding in big two layers；
Tunnel：Overlay (covering) technology in the distributed virtual switch, realizes across the physical network realization of virtual network
Two layers of transmission.
To be best understood from the present embodiment, reference picture 2 first introduces the overall architecture of the present embodiment cloud network environment.
In the present embodiment, the cloud network environment includes control node (not shown), calculate node (including calculate node A
With calculate node B), network node (network node A) and physical network.Calculate node inside includes multiple subnets, and (figure is not
Show), each subnet includes multiple virtual machines, therefore calculate node includes multiple virtual machines, and calculate node also includes distribution
Formula virtual machine interchanger (dvswitch) and distributed virtual router (dvr).Network node includes virtual machine interchanger and side
Boundary's router.
As shown in Fig. 2 having a tunnel face, tunnel on the distributed virtual machine interchanger of calculate node and network node
Mouth is used for data forwarding and data receiver in node and between node, when data are carried out between the individual nodes by tunnel face
During forwarding, in addition it is also necessary to forwarded via physical network.
In the present embodiment, the number of the calculate node and network node all includes multiple, and concrete numerical value is not limited,
Because calculate node includes multiple virtual machines, therefore the number of calculate node is preferably above the number of network node.
In the present embodiment, control node is used to configure dhcp servers to calculate node, and monitors each calculate node
Health status；When the message that network node is used in calculate node is non-dhcp protocol massages, calculate node is sent
Message is processed；Calculate node is used to distribute address information to internal virtual machine, and in the present embodiment, the address information is excellent
Elect IP address as, address information hereinafter is hereafter repeated no more all referring to IP address.
In the present embodiment, before calculate node is to virtual machine distribution address information, section is first being calculated by control node
Dhcp servers are configured in point.The control node configures DynamicHost in the distributed virtual router of the calculate node
The mode of configuration protocol dhcp servers includes：
The control node issues the configuration information of dhcp servers to the agent process of the calculate node, by the meter
The configuration information is issued to the agent process of operator node the bottom data face in distributed virtual router, with described point
Cloth virtual router realizes the configuration of dhcp servers.
Wherein, the agent process (Dhcp agent) is a process for operating in network node or calculate node,
It is an agency of bottom data face and control node (Server) communication, and it passes through RPC (Remote Procedure
Call Protocol, remote procedure call protocol) receive the configuration information of the dhcp devices service that control node issues, it is described
Configuration information includes：Dhcp address pools, CIDR (Classless Inter-Domain Routing, without routing between type field),
Mask, gateway, dns (Domain Name System, domain name system) etc., are then handed down to bottom data face by configuration information.
It should be appreciated that the bottom data face is in the distributed virtual router of calculate node, therefore, work as control node
Issue the configuration information of dhcp servers to the calculate node agent process when, agent process receives control section by RPC
The configuration information that issues of point, and the configuration information is issued to the bottom data face in distributed virtual router again, with
The distributed virtual router realizes the configuration of dhcp servers.
Further, the agent process in the present embodiment can also periodically be reported and be currently located the strong of calculate node
Health state to control node, for control node by the health status that agent process is reported check calculate node business whether
Normally.When control node does not receive the heartbeat of agent process in prefixed time interval, the prefixed time interval is not limited
Set according to actual conditions, it is believed that the calculate node where the agent process occurs abnormal, it is necessary to be adjusted again to this network
Degree, now, can select a new calculate node for this network provides dhcp services, specifically：The control node will
Each virtual machine (vm) migration, in new calculate node, is the calculate node of failure by new calculate node in the calculate node of failure
In each virtual machine provide dhcp service.
It should be appreciated that in the prior art, if being serviced for calculate node provides dhcp by control node selected network node,
So, when control node is not received by heartbeat that network node reports constantly, it is necessary to reschedule to select to network for a long time
A new node is selected to provide dhcp services for network.In order to avoid network node report it is too frequent, it will usually set certain
Time interval, there is this period " blind area ".When network node occurs exception, it is necessary to wait this section of assay intervals time mistake
Go, control node can just be perceived, then carry out weight scheduling process.When control node is busier, rescheduling can not
Process at once.So in this period dhcp servers be in cannot normal service state, virtual machine in this period
Carry out IP obtain be cannot be successful, so as to have influence on normal business.
And be that calculate node configures dhcp servers by control node in the present embodiment, to realize at each calculate node
The address allocation procedure of the internal virtual machine of reason oneself, it is to avoid the flow that across a network is caused expends, and virtual machine address is long
Time does not respond situation about even losing, and improves the promptness of virtual machine address distribution, saves substantial amounts of flow.Additionally,
The health status of oneself to the control node is periodically reported by the agent process in calculate node, in calculate node failure,
Control node starts new calculate node for the virtual machine in the calculate node of failure continues to service, and is not responding to the normal fortune of business
OK, when preventing calculate node failure, the business paralysis in calculate node, so as to improve the intelligent and High Availabitity of Business Processing
Property.
Reference picture 5, Fig. 5 is the high-level schematic functional block diagram of the distribution system first embodiment of virtual machine address of the present invention.
The distribution system of the virtual machine address includes：
Forwarding module 10, during for the request message for receiving the transmission of the virtual machine in the calculate node, described will ask
Message is asked to be forwarded to tunnel face；
In the present embodiment, when the virtual machine inside calculate node initiates request message, request message reaches forwarding mould
In block 10, when forwarding module 10 receives the request message of virtual machine transmission, the request message is first forwarded to tunnel face.
Processing module 20, for when the tunnel face detects the request message for dhcp request messages, to described
Dhcp request messages are intercepted, and the dhcp request messages are forwarded to the distributed virtual route of the calculate node
Device, for the corresponding address information of dhcp request messages described in the dhcp server feedbacks in the distributed virtual router；
When processing module 20 detects the request message for dhcp request messages in the tunnel face, first to described
Dhcp request messages are intercepted, and the dhcp request messages are forwarded to the distributed virtual route of the calculate node
Device, for the corresponding address information of dhcp request messages described in the dhcp server feedbacks in the distributed virtual router.
In the present embodiment, dhcp request messages correspondence described in the dhcp server feedbacks in the distributed virtual router
The mode of address information include：
The dhcp that dhcp servers in the distributed virtual router receive the distributed virtual switch transmission please
When seeking message, the identification information of virtual machine is parsed from the dhcp request messages；
Mapping table based on default identification information Yu address information, obtains the address that the identification information for determining determines
Information；
The virtual machine is fed back to using the address information of acquisition as the corresponding address information of the dhcp request messages.
It should be noted that the dhcp servers in the distributed virtual router are to dhcp request message feedback addresses
Before information, the distributed virtual router first starts the dhcp servers in the interior network interface of connection distribution switch,
The dhcp request messages that the distribution switch sends are received with by the dhcp servers for starting.
Feedback module 30, for the address letter of the dhcp server feedbacks in the distributed virtual router is received
During breath, the address information is fed back into the virtual machine.
When the address information of the dhcp server feedbacks in receiving distributed virtual router, feedback module 30
The address information is fed back into the virtual machine.
Specifically, reference picture 6, the feedback module 30 includes：
Forwarding interception unit 31, for the ground of the dhcp server feedbacks in the distributed virtual router is received
During the information of location, the address information is forwarded to tunnel face, and the address information is intercepted in the tunnel face；
Feedback unit 32, it is for after the tunnel face intercepts to the address information, the address information is anti-
It is fed to the virtual machine.
That is, forwarding interception unit 31 receives the address letter of the dhcp server feedbacks in the distributed virtual router
During breath, the address information is first forwarded to tunnel face, the address information is intercepted in the tunnel face then, in institute
State after tunnel face intercepts to the address information, the address information is fed back to the virtual machine by feedback unit 32 again,
To realize the distribution of virtual machine address.
The distribution system of the virtual machine address that the present embodiment is proposed, by control node on the distributed virtual road of calculate node
By configuring DHCP dhcp servers in device, when the distributed virtual switch of calculate node receives the meter
During the request message that the virtual machine in operator node sends, the request message is first forwarded to tunnel face, then in the tunnel
When mouth detects the request message for dhcp request messages, the dhcp request messages are intercepted, and by the dhcp
Request message is forwarded to the distributed virtual router of the calculate node, for the dhcp in the distributed virtual router
The corresponding address information of dhcp request messages described in server feedback, finally in the distributed virtual router is received
During the address information of dhcp server feedbacks, the address information is fed back into the virtual machine, to realize virtual machine address
Configuration.In the present invention, the distribution of virtual machine address is realized, without inter-network again by the built-in dhcp servers of calculate node
Network is distributed, and not only reduces the flow that virtual machine address assigning process is spent, it is thus also avoided that virtual machine address is obtained not for a long time
To the situation that response is even lost.
Further, the second embodiment of the distribution system of virtual machine address of the present invention is proposed based on first embodiment,
In the present embodiment, the system also includes：
Analysis module, for when the request message is forwarded to tunnel face, the analysis request to be reported in the tunnel face
The type of text；
If detecting the request message carries dhcp agreements, then it is assumed that the request message is dhcp request messages, and
Perform the operation of the processing module 20.
That is, when request message is forwarded to tunnel face, analysis module first analyzes the request message in the tunnel face
Type, specifically, whether the distributed virtual switch carries dhcp agreements in checking the request message, if detecting institute
State request message and carry dhcp agreements, then it is assumed that the request message is dhcp request messages, and performs the processing module 20
Operation.
Further, the processing module 20, dhcp agreements are not carried if being additionally operable to detect the request message,
The tunnel face is packaged to the request message, and the request message after encapsulation is forwarded into other in cloud network environment
Each calculate node.
That is processing module 20 is after the type that the request message is analyzed in the tunnel face, if detecting the request report
Text does not carry dhcp agreements, illustrates that the request message is not dhcp request messages, and now, the distributed virtual switch exists
The tunnel face is packaged to the request message, and the request message after encapsulation then is forwarded into its in cloud network environment
In its each calculate node and other each network nodes, processed by each node in cloud network environment.Should manage
Solution, the request message after encapsulation is forwarded to other nodes in cloud network environment, is the equal of to be turned in the form of broadcasting
Hair.
In the present embodiment, when dhcp agreements are carried in being forwarded to tunnel face request message, the distributed virtual switch
The request message is just intercepted, by being replied in the distributed virtual router in calculate node, to avoid the consuming of flow.When
When request message does not carry dhcp agreements, just according to normal flow, it is sent to other nodes and is processed, improves message
What is processed is intelligent.
It should be noted that herein, term " including ", "comprising" or its any other variant be intended to non-row
His property is included, so that process, method, article or system including a series of key elements not only include those key elements, and
And also include other key elements being not expressly set out, or also include for this process, method, article or system institute are intrinsic
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Also there is other identical element in the process of key element, method, article or system.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably implementation method.Based on such understanding, technical scheme is substantially done to prior art in other words
The part for going out contribution can be embodied in the form of software product, and the computer software product is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are used to so that a station terminal equipment (can be mobile phone, computer, clothes
Business device, air-conditioner, or network equipment etc.) perform method described in each embodiment of the invention.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of distribution method of virtual machine address, it is characterised in that methods described is applied in cloud network environment, the cloud net
Network environment includes control node and calculate node, and the control node is matched somebody with somebody in the distributed virtual router of the calculate node
DHCP dhcp servers are put, the distribution method of the virtual machine address includes：
When the distributed virtual switch of calculate node receives the request message that the virtual machine in the calculate node sends, will
The request message is forwarded to tunnel face；
The distributed virtual switch the tunnel face detect the request message for dhcp request messages when, to described
Dhcp request messages are intercepted, and the dhcp request messages are forwarded to the distributed virtual route of the calculate node
Device, for the corresponding address information of dhcp request messages described in the dhcp server feedbacks in the distributed virtual router；
In the address information of the dhcp server feedbacks in receiving the distributed virtual router, by the address information
Feed back to the virtual machine.
2. the distribution method of virtual machine address as claimed in claim 1, it is characterised in that the control node is in the calculating
The mode that DHCP dhcp servers are configured in the distributed virtual router of node includes：
The control node issues the configuration information of dhcp servers to the agent process of the calculate node, is saved by described calculating
The configuration information is issued to the agent process of point the bottom data face in distributed virtual router, with the distribution
Virtual router realizes the configuration of dhcp servers.
3. the distribution method of virtual machine address as claimed in claim 1, it is characterised in that described to the dhcp request messages
Before the step of being intercepted, methods described also includes：
When the request message is forwarded to tunnel face, the distributed virtual switch analyzes the request in the tunnel face
The type of message；
If detecting the request message carries dhcp agreements, then it is assumed that the request message is dhcp request messages, and is performed
The step of being intercepted to the dhcp request messages.
4. the distribution method of virtual machine address as claimed in claim 3, it is characterised in that described when request message forwarding
During to tunnel face, after the distributed virtual switch is the step of the type of the tunnel face analysis request message,
Methods described also includes：
If detecting the request message does not carry dhcp agreements, the distributed virtual switch is in the tunnel face to institute
State request message to be packaged, and the request message after encapsulation is forwarded to other each calculate nodes in cloud network environment.
5. the distribution method of the virtual machine address as described in claim any one of 1-4, it is characterised in that described receiving
When stating the address information of dhcp server feedbacks in distributed virtual router, the distributed virtual switch will be described
The step of location feedback of the information to virtual machine, includes：
In the address information of the dhcp server feedbacks in receiving the distributed virtual router, the distributed virtual
The address information is forwarded to tunnel face by interchanger, and the address information is intercepted in the tunnel face；
After the tunnel face intercepts to the address information, the address information is fed back into the virtual machine.
6. a kind of distribution system of virtual machine address, it is characterised in that the system is applied in cloud network environment, the cloud net
Network environment includes control node and calculate node, and the control node is matched somebody with somebody in the distributed virtual router of the calculate node
DHCP dhcp servers are put, the distribution system of the virtual machine address includes：
Forwarding module, during for the request message for receiving the transmission of the virtual machine in the calculate node, by the request message
It is forwarded to tunnel face；
Processing module, for when the tunnel face detects the request message for dhcp request messages, being asked to the dhcp
Ask message to be intercepted, and the dhcp request messages are forwarded to the distributed virtual router of the calculate node, for
The corresponding address information of dhcp request messages described in dhcp server feedbacks in the distributed virtual router；
Feedback module, during for address information in the dhcp server feedbacks in receiving the distributed virtual router,
The address information is fed back into the virtual machine.
7. the distribution system of virtual machine address as claimed in claim 6, it is characterised in that the control node is in the calculating
The mode that DHCP dhcp servers are configured in the distributed virtual router of node includes：
The control node issues the configuration information of dhcp servers to the agent process of the calculate node, is saved by described calculating
The configuration information is issued to the agent process of point the bottom data face in distributed virtual router, with the distribution
Virtual router realizes the configuration of dhcp servers.
8. the distribution system of virtual machine address as claimed in claim 6, it is characterised in that the system also includes：
Analysis module, for when the request message is forwarded to tunnel face, the request message being analyzed in the tunnel face
Type；
If detecting the request message carries dhcp agreements, then it is assumed that the request message is dhcp request messages, and is performed
The operation of the processing module.
9. the distribution system of virtual machine address as claimed in claim 8, it is characterised in that the processing module, if being additionally operable to
Detect the request message and do not carry dhcp agreements, then the request message is packaged in the tunnel face, and will envelope
Request message after dress is forwarded to other each calculate nodes in cloud network environment.
10. the distribution system of the virtual machine address as described in claim any one of 6-9, it is characterised in that the feedback module
Including：
Forwarding interception unit, for the address information of the dhcp server feedbacks in the distributed virtual router is received
When, the address information is forwarded to tunnel face, and the address information is intercepted in the tunnel face；
Feedback unit, for after the tunnel face intercepts to the address information, the address information being fed back into institute
State virtual machine.
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