CN106790701A - It is a kind of to orient the method and device that Dynamic Host Configuration Protocol server is specified in request - Google Patents

Abstract

The invention discloses a method and device for directional requesting a designated DHCP server, wherein the method includes: receiving request message information sent by a target node, and acquiring target node information contained in the request message information; The mapping relationship between the node information of each node and the server information of the corresponding DHCP server determines the target server information corresponding to the target node information; forwards the request message information to the target DHCP server corresponding to the target server information, to instruct the DHCP server to select an unused IP address and feed it back to the target node. In this way, the node can obtain the IP address provided by the designated DPCH server in a directional manner, thereby avoiding the situation that the node cannot normally complete the required business because the IP address obtained by the node corresponds to the business undertaken by the DHCP server and the business that the node needs to complete is different.

Description

Method and device for directing request to designate DHCP server

technical field

The present invention relates to the technical field of data center network, and more specifically, relates to a method and a device for directing a request to specify a DHCP server.

Background technique

In recent years, with the rapid development of computer technology, cloud computing technology and big data technology are more and more widely used in people's life and work, and the network scale is also increasing, and the network complexity is also increasing. Especially in the context of the geometric growth of data volume in the Internet era, the construction of various data centers is in full swing. Since each data center has a large number of machine clusters, the data center has more and more requirements for network configuration. higher.

In the actual application network environment, the first problem is that the number of nodes in the cluster server is relatively large, and the number of IP addresses that can be allocated is less than the number of nodes. In order to solve this problem, multiple DHCP servers will appear in the network environment , to assign IP addresses to a large number of cluster nodes. If there are multiple DHCP servers in the network environment, the node will randomly obtain the IP address provided by one of the DHCP servers. Different DHCP servers undertake different services. For example, the IP address of network segment A is used for operating system deployment services; the IP address of network segment B is used for operating system backup and recovery services; If the IP address of the network segment is not specified, the deployment of the operating system may fail. That is, since different DHCP servers undertake different services, and a node randomly obtains the IP address provided by one of the DHCP servers, there may be differences between the obtained IP address corresponding to the services undertaken by the DHCP server and the services required by the node. In turn, it leads to the situation that the node cannot normally realize the business it needs to complete.

To sum up, there may be a problem in the prior art that the node cannot normally complete the required service due to the fact that the obtained IP address corresponds to the service undertaken by the DHCP server and the service to be completed by the node is different.

Contents of the invention

The purpose of the present invention is to provide a method and device for directional request to designate a DHCP server to solve the problem in the prior art that the node cannot work normally due to the difference between the business undertaken by the obtained IP address corresponding to the DHCP server and the business that the node needs to complete. A problem with the circumstances of the business it needs to accomplish.

In order to achieve the above object, the present invention provides the following technical solutions:

A method for directing a request to specify a DHCP server, comprising:

receiving the request message information sent by the target node, and obtaining the target node information contained in the request message information;

Determining the target server information corresponding to the target node information based on the pre-stored mapping relationship between the node information of each node and the server information of the corresponding DHCP server;

Forwarding the request message information to the target DHCP server corresponding to the target server information, so as to instruct the DHCP server to select an unused IP address and feed it back to the target node.

Preferably, it also includes:

If the target server information corresponding to the target node information is not found in the mapping relationship between the pre-stored node information of each node and the server information of the corresponding DHCP server, the request message information is forwarded to the preset default The DHCP server is used to instruct the DHCP server to select an unused IP address and feed it back to the target node.

Preferably, the request message information is forwarded to a preset default DHCP server, including:

Sending the request message information in a broadcast form to instruct a preset default DHCP server to obtain the request message information.

Preferably, the mapping relationship between the pre-stored node information of each node and the server information of the corresponding DHCP server includes:

Obtain the Mac information of each node as the node information of the corresponding node, and obtain the ID information of each DHCP server as the server information of the corresponding DHCP server;

The mapping relationship between the Mac information of each node and the ID information of the DHCP server corresponding to the node is stored in the mapping relationship table for query.

Preferably, after forwarding the request message information to the target DHCP server corresponding to the target server information, it also includes:

and receiving feedback information returned by the target node, where the feedback information is sent by the target node after receiving the IP address sent by the target DHCP server.

A device for directing a request to specify a DHCP server, comprising:

The first receiving module is configured to: receive the request message information sent by the target node, and obtain the target node information contained in the request message information;

A determining module, configured to: determine the target server information corresponding to the target node information based on the pre-stored mapping relationship between the node information of each node and the server information of the corresponding DHCP server;

The first forwarding module is configured to: forward the request message information to a target DHCP server corresponding to the target server information, so as to instruct the DHCP server to select an unused IP address to feed back to the target node.

Preferably, it also includes:

The second forwarding module is used for: if the target server information corresponding to the target node information is not found in the mapping relationship between the pre-stored node information of each node and the server information of the corresponding DHCP server, then send the request message The information is forwarded to a preset default DHCP server to instruct the DHCP server to select an unused IP address to feed back to the target node.

Preferably, the second forwarding module includes:

The broadcasting unit is configured to: broadcast the request message information to instruct a preset default DHCP server to obtain the request message information.

Preferably, it also includes:

The storage module is used to: obtain the Mac information of each node as the node information of the corresponding node, and obtain the ID information of each DHCP server as the server information of the corresponding DHCP server; use the Mac information of each node with the ID of the DHCP server corresponding to the node The mapping relationship of information is stored in the mapping relationship table for query.

Preferably, it also includes:

The second receiving module is configured to: after forwarding the request message information to the target DHCP server corresponding to the target server information, receive the feedback information returned by the target node, the feedback information is received by the target node Sent after sending the IP address to the target DHCP server.

The present invention provides a method and device for directional requesting a designated DHCP server, wherein the method includes: receiving request message information sent by a target node, and acquiring target node information contained in the request message information; The mapping relationship between the node information of each node and the server information of the corresponding DHCP server determines the target server information corresponding to the target node information; forwards the request message information to the target DHCP server corresponding to the target server information, to instruct the DHCP server to select an unused IP address and feed it back to the target node. In the above technical solution provided by the embodiment of the present invention, the mapping relationship between the node information of each node and the server information of the corresponding DHCP server is stored in advance, thus, after obtaining the request message information sent by the target node, determine the information related to the request message. The target server information corresponding to the target node information contained in the message information, and then forward the request message information to the target DPCH server corresponding to the target server information, so that the DPCH server provides an IP address for the target node, thereby realizing node-directed acquisition Specify the IP address provided by the DPCH server, thereby avoiding the situation that the node cannot normally complete the required business because the IP address obtained by the node corresponds to the business undertaken by the DHCP server and the business that the node needs to complete is different.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a flow chart of a method for directing a request to specify a DHCP server provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an apparatus for directing a request to specify a DHCP server according to an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, which shows a flow chart of a method for directing a request to specify a DHCP server provided by an embodiment of the present invention, which may include the following steps:

S11: Receive the request message information sent by the target node, and obtain the target node information included in the request message information.

Wherein, the target node may refer to any node in the cluster server, that is, when any node sends request message information, it can be determined that the node is the target node. After receiving the request message information sent by the target node, the target node information corresponding to the target node can be obtained from the information. Different nodes have different node information, and corresponding different DPCH servers have different server information.

It should be noted that the request message information sent by the node is generally automatically sent by the node when the PXE (preboot executeenvironment, pre-boot execution environment) is started. In addition, the technical solution provided by the embodiment of the present invention can be realized based on Yunhai OS, which is an integrated Based on the industry-leading cloud management platform software, the present invention realizes that multiple nodes obtain IP addresses provided by different DHCP servers.

S12: Determine the target server information corresponding to the target node information based on the pre-stored mapping relationship between the node information of each node and the server information corresponding to the DHCP server.

Each node has a corresponding DHCP server. Generally speaking, the business undertaken by the DHCP server corresponding to the node corresponds to the business that the node needs to complete. For example, the IP address of the B network segment corresponding to a DHCP server is used for operating system backup and recovery services. Therefore, the node that needs to complete the operating system backup and recovery service corresponds to the DHCP server; correspondingly, the node information of the node corresponds to the server information of the DHCP server corresponding to the node, and this correspondence is the above-mentioned mapping relationship stored in advance. In addition, since there may be multiple nodes that need to complete the same service, the node information of multiple nodes may correspond to the server information of the same DHCP server, that is, the node information and server information may exist in a many-to-one mapping relationship.

The target server information corresponding to the target node information can be determined from the pre-stored mapping relationship. The target in this application is only used to refer to the node and DHCP server corresponding to the currently received request message information, and has no other substantive meaning.

S13: Forward the request message information to the target DHCP server corresponding to the target server information, so as to instruct the DHCP server to select an unused IP address and feed it back to the target node.

Forward the request message information to the target DHCP server to instruct the DHCP server to select an unused IP address from its own IP address pool to feed back to the target node after receiving the request message information, so that the target node obtains its own The purpose of the IP address is required.

In the above technical solution provided by the embodiment of the present invention, the mapping relationship between the node information of each node and the server information of the corresponding DHCP server is stored in advance, thus, after obtaining the request message information sent by the target node, determine the information related to the request message. The target server information corresponding to the target node information contained in the message information, and then forward the request message information to the target DPCH server corresponding to the target server information, so that the DPCH server provides an IP address for the target node, thereby realizing node-directed acquisition Specify the IP address provided by the DPCH server, thereby avoiding the situation that the node cannot normally complete the required business because the IP address obtained by the node corresponds to the business undertaken by the DHCP server and the business that the node needs to complete is different.

In addition, the above-mentioned technical features disclosed in this application can effectively avoid the confusion of services provided by the DPCH server, ensure the normal realization of the overall business of the cloud platform, and realize the maximum utilization of network resources.

A kind of directional request method for specifying the DHCP server provided by the embodiment of the present invention may also include:

If the target server information corresponding to the target node information is not found in the mapping relationship between the node information of each node stored in advance and the server information of the corresponding DHCP server, then the request message information is forwarded to a preset default DHCP server to Instruct the DHCP server to select an unused IP address and feed it back to the target node.

Wherein, the pre-set default DHCP server can be set by the staff according to actual needs, thus, if there is no target server information corresponding to the target node information in the pre-stored mapping relationship, then the DHCP server will be assigned by the DHCP server. Select an unused IP address from its own IP address pool to feed back to the target node, so that the target node can obtain the IP address it needs, avoiding when there is no target server information corresponding to the target node information in the mapping relationship The situation that the target node cannot obtain the IP address normally occurs, which further ensures the smooth realization of the overall business of the system.

A kind of directional request method for specifying the DHCP server that the embodiment of the present invention provides, forwards the request message information to the preset default DHCP server, may include:

The request message information is sent in the form of broadcast to instruct the preset default DHCP server to obtain the request message information.

There are many ways to forward the request message information to the default DHCP server. For example, the request message information can be directly sent to the default DHCP server, or it can be preset so that only the default DHCP server can receive the broadcast information, and then the request message can be sent to the default DHCP server. The text information is sent in the form of broadcast, and of course other settings can be made according to actual needs, all within the protection scope of the present invention. In this application, sending the request message information in the form of broadcast can guarantee the smooth delivery of the information to a certain extent.

In the method for specifying a DHCP server for a directional request provided in an embodiment of the present invention, the mapping relationship between the pre-stored node information of each node and the server information of the corresponding DHCP server may include:

Obtain the Mac information of each node as the node information of the corresponding node, and obtain the ID information of each DHCP server as the server information of the corresponding DHCP server;

The mapping relationship between the Mac information of each node and the ID information of the DHCP server corresponding to the node is stored in the mapping relationship table for query.

Among them, the Mac (physical address or hardware address) information of the node can be used as the node information of the node, and the ID (unique identification) information of the DHCP server can be used as the server information of the DHCP server, and other settings can also be made according to actual needs , are all within the protection scope of the present invention, and the mapping relationship of the above information is stored in the mapping relationship table, and the corresponding information can be quickly queried from the relationship table when needed.

A kind of directional request designation DHCP server method that the embodiment of the present invention provides, after request message information is forwarded to the target DHCP server corresponding with target server information, can also comprise:

Receiving the feedback information returned by the target node, the feedback information is sent by the target node after receiving the IP address sent by the target DHCP server.

After receiving the feedback information returned by the target node, it can be learned that the target node has obtained the corresponding IP address information, so that external personnel or other devices can obtain the status of the target node obtaining the IP address.

The embodiment of the present invention also provides a device for directing the request to specify the DHCP server, as shown in Figure 2, may include:

The first receiving module 11 is configured to: receive the request message information sent by the target node, and obtain the target node information contained in the request message information;

The determination module 12 is configured to: determine the target server information corresponding to the target node information based on the mapping relationship between the pre-stored node information of each node and the server information of the corresponding DHCP server;

The first forwarding module 13 is configured to: forward the request message information to a target DHCP server corresponding to the target server information, so as to instruct the DHCP server to select an unused IP address to feed back to the target node.

The device for directional requesting a designated DHCP server provided by the embodiment of the present invention can be used as a DHCP agent, and then the agent realizes the purpose of the node directional acquisition of the IP address provided by the designated DHCP server.

A device for directing a request to specify a DHCP server provided in an embodiment of the present invention may also include:

The second forwarding module is used for: if the target server information corresponding to the target node information is not found in the mapping relationship between the node information of each node stored in advance and the server information of the corresponding DHCP server, then forward the request message information to the pre-stored The default DHCP server is set to instruct the DHCP server to select an unused IP address and feed it back to the target node.

A kind of directional request designation DHCP server device that the embodiment of the present invention provides, the second forwarding module can comprise:

The broadcast unit is configured to: broadcast the request message information to instruct a preset default DHCP server to obtain the request message information.

A device for directing a request to specify a DHCP server provided in an embodiment of the present invention may also include:

The storage module is used to: obtain the Mac information of each node as the node information of the corresponding node, and obtain the ID information of each DHCP server as the server information of the corresponding DHCP server; use the Mac information of each node with the ID of the DHCP server corresponding to the node The mapping relationship of information is stored in the mapping relationship table for query.

A device for directing a request to specify a DHCP server provided in an embodiment of the present invention may also include:

The second receiving module is used for: after forwarding the request message information to the target DHCP server corresponding to the target server information, receiving the feedback information returned by the target node, the feedback information is sent by the target node after receiving the IP address sent by the target DHCP server of.

For the introduction of relevant parts of the device for directing request to designate a DHCP server provided by the embodiment of the present invention, please refer to the detailed description of the corresponding part in the method for directing request to designate a DHCP server provided by the embodiment of the present invention, and details will not be repeated here.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. it is a kind of to orient the method that Dynamic Host Configuration Protocol server is specified in request, it is characterised in that including：

The request message information that destination node sends is received, and obtains the destination node letter included in the request message information Breath；

Nodal information based on each node for prestoring is true with the mapping relations of the server info of corresponding Dynamic Host Configuration Protocol server Make destination server information corresponding with the destination node information；

The request message information is forwarded to target Dynamic Host Configuration Protocol server corresponding with the destination server information, to indicate to be somebody's turn to do Dynamic Host Configuration Protocol server chooses an IP address being not used by and feeds back to the destination node.

2. method according to claim 1, it is characterised in that also include：

If by the mapping relations of the nodal information of each node that prestores and the server info of corresponding Dynamic Host Configuration Protocol server In do not find destination server information corresponding with the destination node information, then the request message information is forwarded in advance The acquiescence Dynamic Host Configuration Protocol server of setting, the target section is fed back to indicate the Dynamic Host Configuration Protocol server to choose an IP address being not used by Point.

3. method according to claim 2, it is characterised in that be forwarded to the request message information set in advance silent Recognize Dynamic Host Configuration Protocol server, including：

The request message information is sent in the form of broadcasting, should to indicate acquiescence Dynamic Host Configuration Protocol server set in advance to obtain Seek message information.

4. method according to claim 1, it is characterised in that the nodal information of each node for prestoring with it is corresponding The mapping relations of the server info of Dynamic Host Configuration Protocol server, including：

The Mac information of each node is obtained as the nodal information of corresponding node, and obtains the id information of each Dynamic Host Configuration Protocol server As the server info of correspondence Dynamic Host Configuration Protocol server；

The mapping relations of the id information of the Mac information of each node Dynamic Host Configuration Protocol server corresponding with the node are stored to mapping and is closed It is for inquiry in table.

5. method according to claim 1, it is characterised in that be forwarded to and the target clothes request message information After the corresponding target Dynamic Host Configuration Protocol server of business device information, also include：

The feedback information that the destination node is returned is received, the feedback information receives the target for the destination node Sent after the IP address that Dynamic Host Configuration Protocol server sends.

6. it is a kind of to orient the device that Dynamic Host Configuration Protocol server is specified in request, it is characterised in that including：

First receiver module, is used for：Receive the request message information that destination node sends, and obtain the request message information Comprising destination node information；

Determining module, is used for：Nodal information based on each node for prestoring is believed with the server of corresponding Dynamic Host Configuration Protocol server The mapping relations of breath determine destination server information corresponding with the destination node information；

First forwarding module, is used for：The request message information is forwarded to target corresponding with the destination server information Dynamic Host Configuration Protocol server, the destination node is fed back to indicate the Dynamic Host Configuration Protocol server to choose an IP address being not used by.

7. device according to claim 6, it is characterised in that also include：

Second forwarding module, is used for：If by the clothes of the nodal information of each node that prestores and corresponding Dynamic Host Configuration Protocol server Destination server information corresponding with the destination node information is not found in the mapping relations of device information of being engaged in, then by the request Message information is forwarded to acquiescence Dynamic Host Configuration Protocol server set in advance, to indicate the Dynamic Host Configuration Protocol server to choose the IP ground being not used by Location feeds back to the destination node.

8. device according to claim 7, it is characterised in that second forwarding module includes：

Radio unit, is used for：The request message information is sent in the form of broadcasting, to indicate acquiescence DHCP set in advance Server obtains the request message information.

9. device according to claim 6, it is characterised in that also include：

Memory module, is used for：The Mac information of each node is obtained as the nodal information of corresponding node, and obtains each DHCP The id information of server is used as the server info for corresponding to Dynamic Host Configuration Protocol server；The Mac information of each node is corresponding with the node Dynamic Host Configuration Protocol server id information mapping relations store into mapping table for inquiry.

10. device according to claim 6, it is characterised in that also include：

Second receiver module, is used for：The request message information is forwarded to target corresponding with the destination server information After Dynamic Host Configuration Protocol server, the feedback information that the destination node is returned is received, the feedback information is received for the destination node Sent after the IP address sent to the target Dynamic Host Configuration Protocol server.