CN107222352B - Management network recovery method and device - Google Patents

Management network recovery method and device Download PDF

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Publication number
CN107222352B
CN107222352B CN201710521740.3A CN201710521740A CN107222352B CN 107222352 B CN107222352 B CN 107222352B CN 201710521740 A CN201710521740 A CN 201710521740A CN 107222352 B CN107222352 B CN 107222352B
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management
network
management network
node
management node
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CN107222352A (en
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王延家
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Suzhou Inspur Intelligent Technology Co Ltd
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Suzhou Inspur Intelligent Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0695—Management of faults, events, alarms or notifications the faulty arrangement being the maintenance, administration or management system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route

Abstract

The invention discloses a management network recovery method and a device, wherein the method comprises the following steps: after the management network or the data network is configured, whether the corresponding management network is disconnected with the management node is judged; if the management network is disconnected with the management node after the management network is configured, configuring the management network according to preset first configuration information to recover the connection between the management network and the management node, wherein the first configuration information is configuration information for realizing the connection between the management network and the management node; if the management network is disconnected from the management node after the data network is configured, the configuration of the data network is deleted to restore the connection between the management network and the management node. The management network recovery method disclosed by the invention solves the technical problem of how to ensure the stability of the connection between the management network and the management node.

Description

Management network recovery method and device
Technical Field
The present invention relates to the field of virtualization technologies, and in particular, to a management network recovery method and apparatus.
Background
With the development of computer technology, more and more computers adopt virtualization technology. Referring to fig. 1, fig. 1 is a network topology diagram of a virtualization system. The virtualization system comprises a computing node and a management node, wherein the computing node comprises a management switch, a management network and a data network, and the computing node is connected with the management node through the management network.
In the prior art, the virtualization technology mainly performs IP network configuration for the management network and the data network, and in the process of performing IP network configuration, connection between the management network of the computing node and the management node needs to be ensured.
However, in the prior art, whether the management network or the data network is configured by the IP network, the management network may be disconnected from the management node. For example, in the case that the management network is configured with a conflicting IP address, or because the data network is configured such that the data received by the management node is not from the management network but from the data network, the management network and the management node are disconnected, and the stability of the connection between the management network and the management node is poor.
In summary, how to ensure the stability of the connection between the management network and the management node is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a management network recovery method which can solve the technical problem of how to ensure the stability of connection between a management network and a management node. The invention also provides a management network recovery device.
In order to achieve the above purpose, the invention provides the following technical scheme:
a management network recovery method comprises the following steps:
after configuring a management network or a data network, judging whether the corresponding management network is disconnected with a management node;
if the management network is disconnected with the management node after the management network is configured, configuring the management network according to preset first configuration information to recover the connection between the management network and the management node, wherein the first configuration information is configuration information for realizing the connection between the management network and the management node;
and if the management network is disconnected with the management node after the data network is configured, deleting the configuration of the data network to recover the connection between the management network and the management node.
Preferably, the presetting of the first configuration information includes:
reading configuration information which is pre-stored in a database or a configuration file and is used for realizing the connection between the management network and the management node as first configuration information.
Preferably, the presetting of the first configuration information includes:
and receiving configuration information which is input by the outside and is used for realizing the connection between the management network and the management node as first configuration information.
Preferably, the deleting the configuration of the data network further includes:
and configuring the management network according to the preset first configuration information.
Preferably, after configuring the management network or the data network, the determining whether the corresponding management network and the management node are disconnected includes:
after configuring a data network, executing an IP route get command to obtain a corresponding execution result, wherein an object specified in the IP route get command is an IP of the management node;
and judging whether the data received by the management node is from the management network or not based on the execution result, if not, disconnecting the management network from the management node, and if so, not disconnecting the management network from the management node.
Preferably, after configuring the management network or the data network, the determining whether the corresponding management network and the management node are disconnected includes:
after configuring a management network, executing a ping command to obtain a corresponding execution result, wherein an object specified in the ping command is an IP (Internet protocol) of the management node;
and judging whether the network between the management network and the management node is connected or not based on the execution result, if not, disconnecting the management network from the management node, and if so, not disconnecting the management network from the management node.
The invention also provides a management network recovery device, which comprises:
the judging module is used for judging whether the corresponding management network is disconnected with the management node after the management network or the data network is configured;
a first recovery module, configured to, when the management network is disconnected from the management node after the management network is configured, configure the management network according to preset first configuration information to recover the connection between the management network and the management node, where the first configuration information is configuration information for implementing the connection between the management network and the management node;
and the deleting module is used for deleting the configuration of the data network under the condition that the management network is disconnected with the management node after the data network is configured so as to recover the connection between the management network and the management node.
Preferably, the first recovery module includes:
the first preset unit is used for reading configuration information which is pre-stored in a database or a configuration file and is used for realizing the connection between the management network and the management node as first configuration information.
Preferably, the first recovery module includes:
and the second preset unit is used for receiving configuration information which is input by the outside and is used for realizing the connection between the management network and the management node as the first configuration information.
Preferably, the method further comprises the following steps:
and the second recovery module is used for configuring the management network according to the preset first configuration information after the deletion module deletes the configuration of the data network.
The invention provides a management network recovery method, which comprises the steps of judging whether the corresponding management network is disconnected with a management node after the management network or a data network is configured; if the management network is disconnected with the management node after the management network is configured, configuring the management network according to preset first configuration information to recover the connection between the management network and the management node, wherein the first configuration information is configuration information for realizing the connection between the management network and the management node; if the management network is disconnected from the management node after the data network is configured, the configuration of the data network is deleted to restore the connection between the management network and the management node. The management network recovery method provided by the invention firstly judges whether the management network is disconnected with the management node after the management network or the data network is configured, if the management network is configured and the management node is disconnected, the management network is configured according to the preset configuration information which can realize the connection between the management network and the management node, and if the management network is configured and the management node is disconnected, the configuration of the data network is deleted to recover the connection between the management network and the management node, thereby avoiding the disconnection between the management network and the management node after the management network or the data network is configured in the prior art and ensuring the stability of the connection between the management network and the management node. In summary, the management network recovery method provided by the present invention solves the technical problem of how to ensure the stability of the connection between the management network and the management node. The management network recovery device provided by the invention also solves the corresponding technical problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a diagram of a network topology in a virtualization system;
fig. 2 is a flowchart of a management network recovery method according to an embodiment of the present invention;
FIG. 3 is a diagram of a network scenario prior to configuration of a data network;
FIG. 4 is a diagram of a data situation before a data network is configured to obtain data arriving at a management node;
FIG. 5 is a diagram of a network after a data network has been configured;
FIG. 6 is a diagram illustrating the situation where data arriving at a management node is obtained after a data network is configured;
fig. 7 is a schematic structural diagram of a management network recovery apparatus according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 is a network topology diagram of a virtualization system. The virtualization system is used for completing virtual fusion, allocation as required and efficient management of bottom-layer physical resources, can improve the agility and flexibility of resource delivery, improves the use efficiency of resources, and provides continuous resource guarantee and telescopic resource supply for upper-layer services.
The virtualization system includes a compute node and a management node, wherein the compute node includes a management switch, a management network, and a data network. The computing node is a node for running the virtual machine and is used for distributing computing resources; the management node is an entry node managed by the virtualization system and is used for managing computing, storage and network resources in the virtualization system; the management network switch is established on each computing node; the management network is established on a management network switch, and a port group bearing the flow of the management network, the data network and the computing network can be connected with the management node through the management network or communicated with other computing nodes; the data network is coupled to the memory so that the virtual machine on the host uses the memory and the port group hosting the data network traffic can configure an IP address on the data network. In the virtualization system, a computing node and a management node are connected through a management network.
The applicant of the present invention finds that, after a management network, a data network, or a computing network is configured in a virtualization system, sometimes, the management network is disconnected from a management node, and the stability of the connection between the management network and the management node is poor. Therefore, the invention provides a management network recovery method and a management network recovery system, which can ensure the stability of connection between a management network and a management node.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a flowchart of a management network recovery method according to an embodiment of the present invention, and it should be noted that an execution main body of the management network recovery method according to the embodiment of the present invention may be a corresponding management network recovery device, and the management network recovery device may be disposed on a corresponding computing node.
The management network recovery method provided by the embodiment of the invention can comprise the following steps:
step S1: after the management network or the data network is configured, whether the corresponding management network is disconnected with the management node is judged.
After the management network is configured, situations such as IP conflict of the management network or gateway configuration error may occur, and in these situations, the management network is disconnected from the management node and the management network is disconnected from the management node. After configuring the data network, the data received by the management node may come from the data network instead of the management network, and in these cases, there is no data interaction process between the management network and the management node, and the management network and the management node are disconnected. Therefore, after the management network or the data network is configured, it is necessary to determine whether the corresponding management network and the management node are disconnected. The correspondence here means that, in the case of configuring the management network, the determined management network is the configured management network, and the determined management node is the management node connected to the configured management network; in the case of configuring the data network, the determined management network is a management network belonging to the same computing node as the data network, and the determined management node is a management node connected to the determined management network.
Step S2: and if the management network is disconnected with the management node after the management network is configured, configuring the management network according to preset first configuration information to recover the connection between the management network and the management node, wherein the first configuration information is the configuration information for realizing the connection between the management network and the management node.
If the management network is disconnected from the management node after the management network is configured, the configuration information of the management network is changed in the process of configuring the management network, so that the management network needs to be reconfigured according to the first configuration information. Since the first configuration information is configuration information that ensures that the connection between the management network and the management node can be realized, configuring the management network according to the first configuration information enables the connection between the management network and the management node to be restored. And the first configuration information may be preset.
Step S3: if the management network is disconnected from the management node after the data network is configured, the configuration of the data network is deleted to restore the connection between the management network and the management node.
If the management network is disconnected from the management node after the configuration of the data network due to the change of the configuration of the data network, the configuration of the data network needs to be deleted to restore the connection between the management network and the management node.
If the management network and the management node are not disconnected after the management network or the data network is configured, the existing configuration may be maintained without performing other operations, or the current configuration may be subjected to persistence processing in a database or a configuration file, which may further enhance the stability of the connection between the management network and the management node, although there may be other operations, which is not specifically limited herein.
The management network recovery method provided by the invention firstly judges whether the management network is disconnected with the management node after the management network or the data network is configured, if the management network is configured and the management node is disconnected, the management network is configured according to the preset configuration information which can realize the connection between the management network and the management node, and if the management network is configured and the management node is disconnected, the configuration of the data network is deleted to recover the connection between the management network and the management node, thereby avoiding the disconnection between the management network and the management node after the management network or the data network is configured in the prior art and ensuring the stability of the connection between the management network and the management node. In summary, the management network recovery method provided by the present invention solves the technical problem of how to ensure the stability of the connection between the management network and the management node.
In the management network recovery method provided in the embodiment of the present invention, presetting the first configuration information may include:
reading configuration information which is pre-stored in a database or a configuration file and is used for realizing the connection between the management network and the management node as first configuration information.
Since the configuration information capable of realizing the connection between the management network and the management node is stored in the database or the configuration file in advance, the configuration information which is stored in the database or the configuration file in advance and used for realizing the connection between the management network and the management node can be read as the first configuration information, so that the configuration information used for realizing the connection between the management network and the management node does not need to be reconfigured, the time for presetting the first configuration information can be saved, the time for recovering the connection between the management network and the management node is saved, and the efficiency is improved. Of course, there may be other methods for presetting the first configuration information, and the present invention is not limited in detail herein.
In the management network recovery method provided in the embodiment of the present invention, presetting the first configuration information may include:
and receiving configuration information which is input by the outside and is used for realizing the connection between the management network and the management node as first configuration information.
When the first configuration information is preset, the configuration information which is input by the outside and used for realizing the connection between the management network and the management node can be received as the first configuration information, so that the advantage that the change of the configuration information for realizing the connection between the recovery management network and the management node by the outside can be met, and the controllability of the outside on the connection process between the recovery management network and the management node is enhanced. Of course, there may be other methods for presetting the first configuration information, and the present invention is not limited in detail herein.
In the management network recovery method provided in the embodiment of the present invention, after deleting the configuration of the data network, the method may further include:
and configuring the management network according to preset first configuration information.
In practical application, sometimes the configuration of the management network is changed in the process of configuring the data network, in this case, when the connection between the management network and the management node is restored, not only the configuration of the data network needs to be deleted, but also the management network needs to be configured according to the preset first configuration information, which has the advantage of being capable of enhancing the accuracy of restoring the connection between the management network and the management node.
In the method for restoring a management network according to an embodiment of the present invention, after configuring a management network or a data network, determining whether a corresponding management network is disconnected from a management node may include:
after configuring the data network, executing an IP route get command to obtain a corresponding execution result, wherein an object specified in the IP route get command is an IP of a management node;
and judging whether the data received by the management node is from the management network or not based on the execution result, if not, disconnecting the management network from the management node, and if so, not disconnecting the management network from the management node.
The role of the ip route get command is to determine where the command specifies that the object receives data from. Since the data received by the management node is from the data network instead of the management network after the data network is configured, the ip routeget command can be applied to determine whether the management network and the management node are disconnected after the data network is configured. For example, executing an IP route get command created by an IP based on a management node to obtain an execution result; if the execution result shows that the data received by the management node is from the data network, the management network is disconnected with the management node, and if the execution result shows that the data received by the management node is from the management network, the management network is not disconnected with the management node. The ip route get command can be used for conveniently judging whether the management network and the management node are disconnected after the data network is configured. Of course, there may be other determination methods, and the present invention is not limited thereto. In practical applications, the format of the IP route get command created based on the IP of the management node may be: IP route get manages the IP of the node.
The following describes in detail a process of determining whether to disconnect the management network from the management node after configuring the data network using an ip route get command. Referring to fig. 1, fig. 3, fig. 4, fig. 5 and fig. 6, fig. 3 is a diagram illustrating a network situation before configuring a data network; FIG. 4 is a diagram of a data situation before a data network is configured to obtain data arriving at a management node; FIG. 5 is a diagram of a network after a data network has been configured; fig. 6 is a diagram of the situation after the data network is configured to obtain data arriving at the management node.
If the IP of the configured management node is 100.2.25.7255.255.255.0, the IP of the management network in the computing node is 100.2.25.8255.255.240.0, and the vlan of the management network is 0, then the network conditions of the computing node and the management node are as shown in FIG. 3; the ip route get 100.2.25.7 command is executed, and the execution result is shown in fig. 4, as can be seen from fig. 4, data received by 100.2.25.7 comes from the management network, that is, data received by the management node comes from the management network, and at this time, the management network and the management node are not disconnected; if a vlan data network datanetwork with a non-0 vlan is added to the computing node at this time, and the IP of the data network datawork is configured to be 100.2.25.221255.255.255.0, the network situation is as shown in fig. 5 at this time; when the ip route get 100.2.25.7 command is executed, the execution result is as shown in fig. 6, it can be seen from fig. 6 that 100.2.25.7 receives data from the data network datanetwork, that is, data received by the management node is from the data network, and at this time, the management network is disconnected from the management node.
In the method for restoring a management network according to an embodiment of the present invention, after configuring a management network or a data network, determining whether a corresponding management network is disconnected from a management node may include:
after the management network is configured, executing a ping command to obtain a corresponding execution result, wherein an object specified in the ping command is an IP (Internet protocol) of a management node;
and judging whether the network between the management network and the management node is connected or not based on the execution result, if not, disconnecting the management network from the management node, and if so, not disconnecting the management network from the management node.
One role of the ping is to determine whether the network between the initiator and the recipient of the ping is connected. Since the connection between the management network and the management node is disconnected after the management network is configured, it is possible to apply a ping command to determine whether the connection between the management network and the management node is disconnected after the management network is configured. For example, executing a ping command created based on the IP of the management node to obtain an execution result; if the execution result shows that the network between the management network and the management node is not communicated, the management network is disconnected with the management node, and if the execution result shows that the network between the management network and the management node is communicated, the management network is not disconnected with the management node. By applying the ping command, whether the management network is disconnected with the management node after the management network is configured can be conveniently judged. Of course, there may be other determination methods, and the present invention is not limited thereto. In practical applications, the format of the ping command created based on the IP of the management node may be: ping manages the IP of the node.
The invention also provides a management network recovery device which has the corresponding effect of the management network recovery method provided by the invention. Referring to fig. 7, fig. 7 is a schematic structural diagram of a management network recovery apparatus according to an embodiment of the present invention.
The management network recovery device provided by the embodiment of the invention can comprise:
a judging module a1, configured to, after configuring the management network or the data network, judge whether the corresponding management network and the management node are disconnected;
a first recovery module a2, configured to, when the management network is disconnected from the management node after the management network is configured, configure the management network according to preset first configuration information to recover the connection between the management network and the management node, where the first configuration information is configuration information for implementing the connection between the management network and the management node;
and a deleting module a3, configured to delete the configuration of the data network to restore the connection between the management network and the management node in case of disconnection between the management network and the management node after configuring the data network.
In a management network recovery apparatus provided in an embodiment of the present invention, a first recovery module may include:
the first preset unit is used for reading configuration information which is pre-stored in a database or a configuration file and is used for realizing the connection between the management network and the management node as first configuration information.
In a management network recovery apparatus provided in an embodiment of the present invention, a first recovery module may include:
and the second preset unit is used for receiving configuration information which is input by the outside and is used for realizing the connection between the management network and the management node as the first configuration information.
The management network recovery apparatus provided in the embodiment of the present invention may further include:
and the second recovery module is used for configuring the management network according to the preset first configuration information after the deletion module deletes the configuration of the data network.
In an apparatus for restoring a management network according to an embodiment of the present invention, a determining module may include:
the first execution unit is used for executing the IP route get command to obtain a corresponding execution result after the data network is configured, and an object specified in the IP route get command is an IP of the management node;
and the first judging unit is used for judging whether the data received by the management node is from the management network or not based on the execution result, if not, the management network is disconnected with the management node, and if so, the management network is not disconnected with the management node.
In an apparatus for restoring a management network according to an embodiment of the present invention, a determining module may include:
a second execution unit, configured to execute a ping command to obtain a corresponding execution result after configuring a management network, where an object specified in the ping command is an IP of a management node;
and the second judgment unit is used for judging whether the network between the management network and the management node is connected or not based on the execution result, if not, the management network and the management node are disconnected, and if so, the management network and the management node are not disconnected.
For a description of a relevant part in a management network recovery apparatus provided in an embodiment of the present invention, reference is made to detailed descriptions of a corresponding part in a management network recovery method provided in an embodiment of the present invention, and details are not repeated herein. In addition, parts of the above technical solutions provided in the embodiments of the present invention that are consistent with the implementation principles of the corresponding technical solutions in the prior art are not described in detail, so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to 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 (8)

1. A management network recovery method is characterized by comprising the following steps:
after configuring a management network or a data network, judging whether the corresponding management network is disconnected with a management node;
if the management network is disconnected with the management node after the management network is configured, configuring the management network according to preset first configuration information to recover the connection between the management network and the management node, wherein the first configuration information is configuration information for realizing the connection between the management network and the management node;
if the management network is disconnected with the management node after the data network is configured, deleting the configuration of the data network to recover the connection between the management network and the management node;
the deleting the configuration of the data network further comprises:
configuring the management network according to the preset first configuration information;
the disconnection between the management network and the management node after the management network is configured is caused by IP conflict of the management network or configuration error of a gateway after the management network is configured, and the disconnection between the management network and the management node after the data network is configured is caused by changing the configuration of the data network after the data network is configured.
2. The method of claim 1, wherein presetting the first configuration information comprises:
reading configuration information which is pre-stored in a database or a configuration file and is used for realizing the connection between the management network and the management node as first configuration information.
3. The method of claim 1, wherein presetting the first configuration information comprises:
and receiving configuration information which is input by the outside and is used for realizing the connection between the management network and the management node as first configuration information.
4. The method of claim 1, wherein after configuring a management network or a data network, determining whether the corresponding management network is disconnected from a management node comprises:
after configuring a data network, executing an IP route get command to obtain a corresponding execution result, wherein an object specified in the IP route get command is an IP of the management node;
and judging whether the data received by the management node is from the management network or not based on the execution result, if not, disconnecting the management network from the management node, and if so, not disconnecting the management network from the management node.
5. The method according to any one of claims 1 to 3, wherein the determining whether the corresponding management network is disconnected from the management node after configuring the management network or the data network comprises:
after configuring a management network, executing a ping command to obtain a corresponding execution result, wherein an object specified in the ping command is an IP (Internet protocol) of the management node;
and judging whether the network between the management network and the management node is connected or not based on the execution result, if not, disconnecting the management network from the management node, and if so, not disconnecting the management network from the management node.
6. A management network recovery apparatus, comprising:
the judging module is used for judging whether the corresponding management network is disconnected with the management node after the management network or the data network is configured;
a first recovery module, configured to, when the management network is disconnected from the management node after the management network is configured, configure the management network according to preset first configuration information to recover the connection between the management network and the management node, where the first configuration information is configuration information for implementing the connection between the management network and the management node;
a deleting module, configured to delete the configuration of the data network to restore the connection between the management network and the management node when the management network and the management node are disconnected after the data network is configured;
the management network recovery apparatus further includes:
the second recovery module is used for configuring the management network according to the preset first configuration information after the deletion module deletes the configuration of the data network;
the disconnection between the management network and the management node after the management network is configured is caused by IP conflict of the management network or configuration error of a gateway after the management network is configured, and the disconnection between the management network and the management node after the data network is configured is caused by changing the configuration of the data network after the data network is configured.
7. The apparatus of claim 6, wherein the first recovery module comprises:
the first preset unit is used for reading configuration information which is pre-stored in a database or a configuration file and is used for realizing the connection between the management network and the management node as first configuration information.
8. The apparatus of claim 6, wherein the first recovery module comprises:
and the second preset unit is used for receiving configuration information which is input by the outside and is used for realizing the connection between the management network and the management node as the first configuration information.
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