CN107465772A - A kind of method and apparatus for reclaiming dynamic host configuration protocol DHCP address - Google Patents
A kind of method and apparatus for reclaiming dynamic host configuration protocol DHCP address Download PDFInfo
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- CN107465772A CN107465772A CN201710903372.9A CN201710903372A CN107465772A CN 107465772 A CN107465772 A CN 107465772A CN 201710903372 A CN201710903372 A CN 201710903372A CN 107465772 A CN107465772 A CN 107465772A
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- virtual machine
- address
- dhcp
- transparent proxy
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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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention discloses a kind of method and apparatus for reclaiming dynamic host configuration protocol DHCP address, this method includes：First dhcp request DHCP Request broadcasting packets are monitored by Transparent Proxy；Dynamic Host Configuration Protocol server internet protocol address and the virtual machine IP address that each first DHCP Request broadcasting packets include are stored by Transparent Proxy；Virtual machine corresponding to stored virtual machine IP address is periodically detected by Transparent Proxy currently whether there is；If virtual machine corresponding to the virtual machine IP address stored has currently been not present, the IP address of the virtual machine being currently not present is reclaimed by Transparent Proxy notice Dynamic Host Configuration Protocol server.By the embodiment of the present invention, solve the problems, such as not reclaiming in time existing for dhcp address recovery.
Description
Technical field
The present embodiments relate to virtualization technology, espespecially a kind of method for reclaiming dynamic host configuration protocol DHCP address
And device.
Background technology
In field of cloud calculation, the internet protocol address of virtual machine obtains from DHCP Dynamic Host Configuration Protocol server
Take, if this IP address lease is before the due date, even if virtual machine shutdown or deleted, Dynamic Host Configuration Protocol server also will not be real the IP
When be again assigned to other virtual machines, this has been resulted in, and a large amount of IP are occupied, and new virtual machine is possible to because dhcp address pool
It is depleted and IP address can not be obtained.
The content of the invention
In order to solve the above-mentioned technical problem, the embodiments of the invention provide one kind recovery dynamic host configuration protocol DHCP
The method of location, this method include：
First dhcp request DHCP Request broadcasting packets are monitored by Transparent Proxy；
By Transparent Proxy store dhcp server ip address that each first DHCP Request broadcasting packets include and
Virtual machine IP address；
Virtual machine corresponding to stored virtual machine IP address is periodically detected by Transparent Proxy currently whether there is；
If virtual machine corresponding to the virtual machine IP address stored has currently been not present, DHCP is noticed by Transparent Proxy
Server reclaims the IP address of the virtual machine being currently not present.
Alternatively, the first dhcp request DHCP Request broadcasting packet bags are monitored by Transparent Proxy
Include：
The first DHCP Request messages sent by Transparent Proxy interception virtual machine, and analyze the first DHCP
The message format of Request broadcasting packets, dhcp server ip address and virtual machine are extracted from the message format analyzed
IP address.
Alternatively, be periodically detected by Transparent Proxy virtual machine corresponding to stored virtual machine IP address it is current whether
In the presence of including：Virtual machine corresponding to stored virtual machine IP address is periodically detected with unicast fashion currently whether there is.
Alternatively, virtual machine is currently not present and included：Virtual machine has currently shut down or has been deleted.
Alternatively, the IP address bag of the virtual machine being currently not present is reclaimed by Transparent Proxy notice Dynamic Host Configuration Protocol server
Include：
Transparent Proxy constructs the 2nd DHCP using the IP address of the virtual machine being currently not present as source IP address
Relase messages, and the 2nd DHCP Relase messages are sent to Dynamic Host Configuration Protocol server, deserved with the recovery of proactive notification Dynamic Host Configuration Protocol server
The IP address of the preceding virtual machine being not present.
In order to reach purpose of the embodiment of the present invention, the embodiment of the present invention additionally provides a kind of recovery DHCP
The device of dhcp address, the device include：Transparent Proxy module；
Transparent Proxy module monitors the first dhcp request DHCP Request broadcasting packets；
Transparent Proxy module stores the Dynamic Host Configuration Protocol server internet protocol that each first DHCP Request broadcasting packets include
Discuss IP address and virtual machine IP address；
Transparent Proxy module be periodically detected stored virtual machine IP address corresponding to virtual machine currently whether there is；
If virtual machine corresponding to the virtual machine IP address stored has currently been not present, Transparent Proxy module notice DHCP
Server reclaims the IP address of the virtual machine being currently not present.
Alternatively, Transparent Proxy module monitors the first dhcp request DHCP Request broadcasting packet bags
Include：
The first DHCP Request messages that virtual machine is sent are intercepted, and analyze the first DHCP Request broadcasting packets
Message format, dhcp server ip address and virtual machine IP address are extracted from the message format analyzed.
Alternatively, Transparent Proxy module be periodically detected virtual machine corresponding to stored virtual machine IP address it is current whether
In the presence of including：Virtual machine corresponding to stored virtual machine IP address is periodically detected with unicast fashion currently whether there is.
Alternatively, virtual machine is currently not present and included：Virtual machine has currently shut down or has been deleted.
Alternatively, Transparent Proxy module notice Dynamic Host Configuration Protocol server reclaims the IP address bag of the virtual machine being currently not present
Include：
The IP address for the virtual machine being currently not present using this constructs the 2nd DHCP Relase messages as source IP address,
And the 2nd DHCP Relase messages are sent to Dynamic Host Configuration Protocol server, this is reclaimed with proactive notification Dynamic Host Configuration Protocol server and has currently been not present
Virtual machine IP address.
The embodiment of the present invention includes：First dhcp request DHCP Request are monitored by Transparent Proxy
Broadcasting packet；The Dynamic Host Configuration Protocol server internet protocol that each first DHCP Request broadcasting packets include is stored by Transparent Proxy
Discuss IP address and virtual machine IP address；Virtual machine corresponding to stored virtual machine IP address is periodically detected by Transparent Proxy
Currently it whether there is；If virtual machine corresponding to the virtual machine IP address stored has currently been not present, led to by Transparent Proxy
Accuse the IP address that Dynamic Host Configuration Protocol server reclaims the virtual machine being currently not present.By the embodiment of the present invention, with solving DHCP
The problem of can not being reclaimed in time existing for the recovery of location.
The further feature and advantage of the embodiment of the present invention will illustrate in the following description, also, partly from explanation
Become apparent in book, or understood by implementing the embodiment of the present invention.The purpose of the embodiment of the present invention and other advantages
It can realize and obtain by specifically noted structure in specification, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical scheme of the embodiment of the present invention, and one of constitution instruction
Point, the technical scheme for explaining the embodiment of the present invention is used for together with embodiments herein, is not formed to the embodiment of the present invention
The limitation of technical scheme.
Fig. 1 is the method flow diagram of the recovery dynamic host configuration protocol DHCP address of the embodiment of the present invention；
Fig. 2 is the device composition frame chart of the recovery dynamic host configuration protocol DHCP address of the embodiment of the present invention；
Fig. 3 is that the Transparent Proxy module of the embodiment of the present invention and Dynamic Host Configuration Protocol server, OVS virtual switches, virtual machine VM are closed
It is schematic diagram.
Embodiment
For the purpose, technical scheme and advantage of the embodiment of the present invention are more clearly understood, below in conjunction with accompanying drawing pair
Embodiments of the invention are described in detail.It should be noted that in the case where not conflicting, embodiment and reality in the application
Applying the feature in example can mutually be combined.
Can be in the computer system of such as one group computer executable instructions the flow of accompanying drawing illustrates the step of
Perform.Also, although logical order is shown in flow charts, in some cases, can be with suitable different from herein
Sequence performs shown or described step.
A kind of method for reclaiming dynamic host configuration protocol DHCP address, as shown in figure 1, this method includes S101-S104：
S101, pass through Transparent Proxy the first dhcp request DHCP Request broadcasting packets of monitoring；
Alternatively, the first dhcp request DHCP Request broadcasting packet bags are monitored by Transparent Proxy
Include：
The first DHCP Request messages sent by Transparent Proxy interception virtual machine, and analyze the first DHCP
The message format of Request broadcasting packets, dhcp server ip address and virtual machine are extracted from the message format analyzed
IP address.
S102, the Dynamic Host Configuration Protocol server interconnection that each first DHCP Request broadcasting packets include is stored by Transparent Proxy
FidonetFido IP address and virtual machine IP address；
S103, by Transparent Proxy it is periodically detected whether virtual machine corresponding to stored virtual machine IP address is currently deposited
；
Alternatively, be periodically detected by Transparent Proxy virtual machine corresponding to stored virtual machine IP address it is current whether
In the presence of including：Virtual machine corresponding to stored virtual machine IP address is periodically detected with unicast fashion currently whether there is.
If virtual machine corresponding to S104, the virtual machine IP address stored has currently been not present, led to by Transparent Proxy
Accuse the IP address that Dynamic Host Configuration Protocol server reclaims the virtual machine being currently not present.
Alternatively, virtual machine is currently not present and included：Virtual machine has currently shut down or has been deleted.
Alternatively, the IP address bag of the virtual machine being currently not present is reclaimed by Transparent Proxy notice Dynamic Host Configuration Protocol server
Include：
Transparent Proxy constructs the 2nd DHCP using the IP address of the virtual machine being currently not present as source IP address
Relase messages, and the 2nd DHCP Relase messages are sent to Dynamic Host Configuration Protocol server, deserved with the recovery of proactive notification Dynamic Host Configuration Protocol server
The IP address of the preceding virtual machine being not present.
In embodiments of the present invention, Transparent Proxy intercepts and captures the DHCP Request broadcasting packets that virtual machine VM is sent, and obtains
The IP address of Dynamic Host Configuration Protocol server and the IP address of virtual machine；Transparent Proxy is periodically detected virtual machine VM IP with unicast fashion；
If detecting that virtual machine VM shuts down, Transparent Proxy constructs DHCP Relase messages using virtual machine VM IP as source IP, main
Dynamic notice Dynamic Host Configuration Protocol server recovery virtual machine VM IP.
In order to reach purpose of the embodiment of the present invention, the embodiment of the present invention additionally provides a kind of recovery DHCP
For the device 1 of dhcp address, it is necessary to illustrate, any embodiment in above method embodiment is applied to the device embodiment
In, this is no longer going to repeat them.As shown in Fig. 2 the device includes：Transparent Proxy module 11；
In embodiments of the present invention, the present invention intercepts the DHCP that virtual machine is sent by a Transparent Proxy module 11
Request messages, Transparent Proxy module 11 analyze the message format, and the IP address of Dynamic Host Configuration Protocol server and virtual is extracted from message
The IP address of machine；Judge whether virtual machine shuts down by periodically detecting the IP address of the virtual machine, if virtual office
Machine, then transparent code module, by constructing DHCP Release messages, actively notice DHCP using the IP of the virtual machine as source IP
Server reclaim the IP address of the virtual machine, reaches the purpose for the IP address that quick recovery virtual machine takes.Due to the party
Method is transparent to Dynamic Host Configuration Protocol server and virtual machine, and the two can not perceive the presence of Transparent Proxy module 11.
In embodiments of the present invention, schematic diagram of the invention is as shown in figure 3, the Transparent Proxy module 11 can be handed over virtual
Change planes OVS connections, realize the function of Transparent Proxy module 11, and OVS is connected with Dynamic Host Configuration Protocol server and virtual machine VM respectively.Thoroughly
Bright proxy module 11 intercepts and captures the DHCP Request broadcasting packets that virtual machine VM is sent, the interior IP containing Dynamic Host Configuration Protocol server of the message
The IP address that address and virtual machine are got；Transparent Proxy module 11 stores Dynamic Host Configuration Protocol server IP and virtual machine IP；Transparent Proxy
Module 11 is periodically detected virtual machine VM IP address with unicast fashion, if detecting that virtual machine VM shuts down, Transparent Proxy
Module 11 constructs DHCP Relase messages, proactive notification Dynamic Host Configuration Protocol server recovery virtual machine using virtual machine VM IP as source IP
VM IP, so as to reach the purpose of quick recovery dhcp address.Specific implementation process is as follows：Transparent Proxy module 11 monitors DHCP
Request broadcasting packets；Transparent Proxy module 11 stores Dynamic Host Configuration Protocol server IP and virtual machine IP；Transparent Proxy module 11 is periodically
Detection virtual machine IP whether there is；If virtual machine IP is not present, Transparent Proxy module 11 constructs DHCP Relese messages,
The message is sent to Dynamic Host Configuration Protocol server, announcement server recovery virtual machine VM IP.
Transparent Proxy module 11 monitors the first dhcp request DHCP Request broadcasting packets；
Alternatively, Transparent Proxy module 11 monitors the first dhcp request DHCP Request broadcasting packets
Including：
The first DHCP Request messages that virtual machine is sent are intercepted, and analyze the first DHCP Request broadcasting packets
Message format, dhcp server ip address and virtual machine IP address are extracted from the message format analyzed.
Transparent Proxy module 11 stores the Dynamic Host Configuration Protocol server internet that each first DHCP Request broadcasting packets include
Protocol IP address and virtual machine IP address；
Transparent Proxy module 11 be periodically detected stored virtual machine IP address corresponding to virtual machine currently whether there is；
Alternatively, Transparent Proxy module 11 be periodically detected stored virtual machine IP address corresponding to virtual machine be currently
No presence includes：Virtual machine corresponding to stored virtual machine IP address is periodically detected with unicast fashion currently whether there is.
If virtual machine corresponding to the virtual machine IP address stored has currently been not present, Transparent Proxy module 11 is noticed
Dynamic Host Configuration Protocol server reclaims the IP address of the virtual machine being currently not present.
Alternatively, virtual machine is currently not present and included：Virtual machine has currently shut down or has been deleted.
Alternatively, Transparent Proxy module 11 notices the IP address that Dynamic Host Configuration Protocol server reclaims the virtual machine being currently not present
Including：
The IP address for the virtual machine being currently not present using this constructs the 2nd DHCPRelase messages as source IP address, and
The 2nd DHCP Relase messages are sent to Dynamic Host Configuration Protocol server, reclaim what this had currently been not present with proactive notification Dynamic Host Configuration Protocol server
The IP address of virtual machine.
In embodiments of the present invention, it is proposed that a kind of method of transparent quick recovery dhcp address, Transparent Proxy module
The DHCP Request broadcasting packets that 11 intercepting and capturing virtual machine VM are sent, the IP address and virtual machine for obtaining Dynamic Host Configuration Protocol server are got
IP address；Transparent Proxy module 11 stores Dynamic Host Configuration Protocol server IP and virtual machine IP；Transparent Proxy module 11 is with unicast fashion week
Phase property detects virtual machine VM, if detecting that virtual machine VM shuts down, Transparent Proxy module 11 is used as source using virtual machine VM IP
IP constructs DHCP Relase messages, proactive notification Dynamic Host Configuration Protocol server recovery virtual machine VM IP.
The beneficial effect of the embodiment of the present invention includes：Solve dhcp address recovery existing for can not reclaim in time ask
Topic, also, due to provided herein is method be to Dynamic Host Configuration Protocol server and virtual machine it is transparent, deployment it is very convenient.
Although the embodiment disclosed by the embodiment of the present invention is as above, described content be only readily appreciate the present invention and
The embodiment of use, is not limited to the embodiment of the present invention.Technical staff in any art of the embodiment of the present invention,
On the premise of the spirit and scope disclosed by the embodiment of the present invention are not departed from, it can be appointed in the form and details of implementation
What modification and change, but the scope of patent protection of the embodiment of the present invention, the model that must be still defined with appended claims
Enclose and be defined.
Claims (10)
- A kind of 1. method for reclaiming dynamic host configuration protocol DHCP address, it is characterised in that methods described includes：First dhcp request DHCP Request broadcasting packets are monitored by Transparent Proxy；The Dynamic Host Configuration Protocol server that each the first DHCP Request broadcasting packets include is stored by the Transparent Proxy to interconnect FidonetFido IP address and virtual machine IP address；Virtual machine corresponding to stored virtual machine IP address is periodically detected by the Transparent Proxy currently whether there is；If virtual machine corresponding to the stored virtual machine IP address has currently been not present, noticed by the Transparent Proxy Dynamic Host Configuration Protocol server reclaims the IP address of the virtual machine being currently not present.
- 2. the method for recovery dhcp address according to claim 1, it is characterised in that described to monitor the by Transparent Proxy One dhcp request DHCP Request broadcasting packets include：The first DHCP Request messages sent by Transparent Proxy interception virtual machine, and analyze described first The message format of DHCP Request broadcasting packets, the Dynamic Host Configuration Protocol server IP is extracted from the message format analyzed Location and the virtual machine IP address.
- 3. the method for recovery dhcp address according to claim 1, it is characterised in that described to pass through Transparent Proxy week Phase property, which detects current whether there is of virtual machine corresponding to stored virtual machine IP address, to be included：It is periodically detected with unicast fashion Virtual machine corresponding to the virtual machine IP address stored currently whether there is.
- 4. the method for the recovery dhcp address according to claim 1 or 3, it is characterised in that the virtual machine is current not In the presence of including：The virtual machine has currently shut down or has been deleted.
- 5. the method for recovery dhcp address according to claim 1, it is characterised in that described to be led to by the Transparent Proxy The IP address that announcement Dynamic Host Configuration Protocol server reclaims the virtual machine being currently not present includes：The Transparent Proxy constructs the 2nd DHCP using the IP address of the virtual machine being currently not present as source IP address Relase messages, and the 2nd DHCP Relase messages are sent to Dynamic Host Configuration Protocol server, with Dynamic Host Configuration Protocol server described in proactive notification Reclaim the IP address of the virtual machine being currently not present.
- 6. a kind of device for reclaiming dynamic host configuration protocol DHCP address, it is characterised in that described device includes：Transparent Proxy Module；The Transparent Proxy module monitors the first dhcp request DHCP Request broadcasting packets；The Dynamic Host Configuration Protocol server interconnection that each first DHCP Request broadcasting packets of Transparent Proxy module storage include FidonetFido IP address and virtual machine IP address；The Transparent Proxy module be periodically detected stored virtual machine IP address corresponding to virtual machine currently whether there is；If virtual machine corresponding to the stored virtual machine IP address has currently been not present, the Transparent Proxy module notice Dynamic Host Configuration Protocol server reclaims the IP address of the virtual machine being currently not present.
- 7. the device of recovery dhcp address according to claim 6, it is characterised in that the Transparent Proxy module monitors the One dhcp request DHCP Request broadcasting packets include：The first DHCP Request messages that virtual machine is sent are intercepted, and analyze the first DHCP Request broadcast report The message format of text, extracts the dhcp server ip address and the virtual machine IP from the message format analyzed Address.
- 8. the device of recovery dhcp address according to claim 6, it is characterised in that the Transparent Proxy module is periodically Virtual machine corresponding to the stored virtual machine IP address of detection, which currently whether there is, to be included：It is periodically detected and is deposited with unicast fashion Virtual machine corresponding to the virtual machine IP address of storage currently whether there is.
- 9. the device of the recovery dhcp address according to claim 6 or 8, it is characterised in that the virtual machine is current not In the presence of including：The virtual machine has currently shut down or has been deleted.
- 10. the device of recovery dhcp address according to claim 6, it is characterised in that the Transparent Proxy module notice The IP address that Dynamic Host Configuration Protocol server reclaims the virtual machine being currently not present includes：The IP address for the virtual machine being currently not present using this constructs the 2nd DHCP Relase messages as source IP address, concurrently The 2nd DHCP Relase messages are sent to Dynamic Host Configuration Protocol server, it is current not to reclaim this with Dynamic Host Configuration Protocol server described in proactive notification The IP address of existing virtual machine.
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| CN201710903372.9A CN107465772A (en) | 2017-09-28 | 2017-09-28 | A kind of method and apparatus for reclaiming dynamic host configuration protocol DHCP address |
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| CN201710903372.9A CN107465772A (en) | 2017-09-28 | 2017-09-28 | A kind of method and apparatus for reclaiming dynamic host configuration protocol DHCP address |
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| CN104519145A (en) * | 2013-09-26 | 2015-04-15 | 华为技术有限公司 | An address resource managing method, system and DHCP server |
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| CN1450756A (en) * | 2002-04-08 | 2003-10-22 | 华为技术有限公司 | Method for real time detecting ethernet connected computer on-line state through insertion equipment |
| CN1567884A (en) * | 2003-06-14 | 2005-01-19 | 华为技术有限公司 | Method for detecting and controlling user access by using Internet control protocol |
| CN1941722A (en) * | 2006-08-29 | 2007-04-04 | 杭州华为三康技术有限公司 | Method and device for maintaining DHCP safety property list by detecting customer terminal |
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