CN114629819B - Network detection method and device, electronic equipment and storage medium - Google Patents

Abstract

The embodiment of the present application discloses a network detection method and system, an electronic device and a storage medium, wherein the network detection method may include: obtaining the first interface information of the Ethernet interface of the node under test; sending a first indication to the node under test; receiving a first message sent by the node under test based on the first indication; wherein the first message carries at least the second interface information of the Ethernet interface of the node under test sending the first message; and determining the interface connectivity between the detection node and the node under test based on the matching result of the second interface information and the first interface information. In this way, accurate detection of the connectivity between the node under test and the detection node in the network can be achieved based on the interface information in the message.

Description

A network detection method and device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of network technology, and in particular to a network detection method and system, electronic equipment and storage medium.

Background Art

In the prior art, public clouds are usually deployed jointly on-site in data centers by hardware integration engineers and software implementation engineers due to the large scale of a single computer room. Unlike public clouds that are generally deployed in centralized data centers, edge clouds are characterized by small single computer rooms, a large number of computer rooms, and extremely dispersed geographical distribution. Due to the above-mentioned particularities, edge computing generally requires software implementation personnel to perform batch automated deployment remotely to reduce labor costs and improve deployment efficiency. When deploying edge computing, it is often encountered that the hardware is not configured as required due to insufficient communication between hardware implementation personnel and software implementation personnel; software implementation personnel find that the remote deployment cannot be carried out due to hardware problems, which will seriously affect the progress, and a large part of the hardware problems are network connectivity and configuration problems.

In view of the network connectivity problem in the above hardware problems, for cloud computing in special scenarios such as edge computing, the existing technology often uses the Internet Packet Groper (ping) method to detect network connectivity. When using the ping method to detect the network, the Internet Protocol (IP) address must be configured on the server network interface. However, when using special configurations and acceleration hardware such as virtual switches or single root I/O virtualization (SRIOV), the network cards of the business network, storage network, and external network are generally not configured with IP addresses, and there are no virtual local area network (VLAN) sub-interfaces. These network packets generally do not pass through the kernel's network protocol stack, resulting in the inability to use the traditional ping method for detection.

Summary of the invention

In view of this, embodiments of the present invention provide a network detection method and system, an electronic device, and a storage medium.

The technical solution of the present invention is achieved in this way:

In a first aspect, an embodiment of the present invention provides a network detection method, which is applied to a detection node in an edge computing cluster, including:

Obtaining first interface information of the Ethernet interface of the node under test;

Sending a first indication to the node under test;

Receiving a first message sent by the node under test based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message;

According to the matching result of the second interface information and the first interface information, the interface connectivity between the detection node and the detected node is determined.

Further, receiving a first message having a maximum transmission unit MTU length value of a first threshold value sent by the measured node based on the first indication;

Receiving a plurality of first messages, the MTU length values of which are sent in sequence by the node under test based on the first threshold and are increased according to a preset interval value;

The maximum MTU length is determined according to the MTU length values of the received multiple first messages.

Further, determining the maximum MTU length according to the MTU length values of the received multiple first messages includes:

If multiple first messages are successfully received, the MTU length value of each received first message is read, and the maximum MTU length value among the multiple first messages is determined.

Further, determining the type of Ethernet interface in the node under test;

The physical interface information of the Ethernet interface is determined according to the type of the Ethernet interface, wherein the physical interface information is used to be carried by the first indication and sent to the node under test, so that the node under test can determine the physical interface corresponding to the Ethernet interface that sends the first message.

Furthermore, the first indication is used to instruct the node under test to send a first message according to the physical interface information.

Further, obtaining first interface information of the Ethernet interface of the node under test at least includes:

Get the interface name of the Ethernet interface of the node under test.

Further, according to the matching result of the second interface information and the first interface information, determining the interface connectivity between the detection node and the detected node includes:

If there is first interface information matching the second interface information, determining that the interface between the detection node and the detected node is connected;

If there is no first interface information matching the second interface information, it is determined that the interface between the detection node and the detected node is not connected.

In a second aspect, an embodiment of the present invention provides a network detection method, which is applied to a tested node in an edge computing cluster, including:

receiving a first indication sent by a detection node;

A first message is sent based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message; the second interface information is used for the detection node to determine the interface connectivity between the detection node and the node under test based on a matching result with the first interface information.

Further, sending a first message based on the first indication includes:

Sending a first message with an MTU length value of a first threshold based on the first indication;

Based on the first threshold, a plurality of first messages whose MTU length values increase incrementally according to a preset interval value are sent in sequence.

Further, when the MTU length value of the first message reaches a second threshold, sending the first message is stopped.

In a third aspect, an embodiment of the present invention provides a network detection device, which is applied to a detection node in an edge computing cluster, including:

An acquisition module, used to acquire first interface information of the Ethernet interface of the node under test;

A first sending module, used to send a first indication to the node under test;

A first receiving module, configured to receive a first message sent by the node under test based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface through which the node under test sends the first message;

The determination module is used to determine the interface connectivity between the detection node and the detected node according to the matching result of the second interface information and the first interface information.

Furthermore, the first receiving module is also used for:

Receiving a first message with a maximum transmission unit MTU length value of a first threshold value sent by the measured node based on the first indication;

Receiving a plurality of first messages, the MTU length values of which are sent in sequence by the node under test based on the first threshold and are increased according to a preset interval value;

The determining module is also used for:

The maximum MTU length is determined according to the MTU length values of the received multiple first messages.

Furthermore, the determination module is specifically used to:

If multiple first messages are successfully received, the MTU length value of each received first message is read, and the maximum MTU length value among the multiple first messages is determined.

Furthermore, the determining module is also used for:

Determine the type of Ethernet interface in the node under test;

The physical interface information of the Ethernet interface is determined according to the type of the Ethernet interface, wherein the physical interface information is used to be carried by the first indication and sent to the node under test, so that the node under test can determine the physical interface corresponding to the Ethernet interface that sends the first message.

Furthermore, the determination module is specifically used to:

If there is first interface information matching the second interface information, determining that the interface between the detection node and the detected node is connected;

If there is no first interface information matching the second interface information, it is determined that the interface between the detection node and the detected node is not connected.

In a fourth aspect, an embodiment of the present invention provides a network detection device, which is applied to a node under test in an edge computing cluster, including:

A second receiving module, used to receive a first indication sent by the detection node;

The second sending module is used to send a first message based on the first indication, wherein the first message carries at least the second interface information of the Ethernet interface of the tested node that sends the first message; the second interface information is used for the detection node to determine the interface connectivity between the detection node and the tested node based on the matching result with the first interface information.

Furthermore, the second sending module is specifically configured to:

Sending a first message with an MTU length value of a first threshold based on the first indication;

Based on the first threshold, a plurality of first messages whose MTU length values increase incrementally according to a preset interval value are sent in sequence.

Furthermore, the device also includes:

The stopping device is used to stop sending the first message when the MTU length value of the first message reaches a second threshold.

In a fifth aspect, an embodiment of the present invention provides an electronic device, the electronic device comprising: a processor and a memory for storing a computer program that can be run on the processor;

When the processor runs the computer program, it executes the steps of the method described in one or more of the above technical solutions.

In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in one or more of the aforementioned technical solutions can be implemented.

The network detection method provided by the present invention obtains the first interface information of the Ethernet interface of the node under test; sends a first indication to the node under test; receives a first message sent by the node under test based on the first indication, wherein the first message carries at least the second interface information of the Ethernet interface of the node under test that sends the first message; and determines the interface connectivity between the detection node and the node under test based on the matching result of the second interface information and the first interface information. In this way, the interface for sending the message can be determined based on the interface information carried in the message sent by the node under test. By matching based on the sending and receiving of the message and the interface information, on the one hand, the link connectivity between the node under test and the detection node is determined, and on the other hand, through interface matching, the detection of Layer 2 network connectivity in the open system interconnection communication reference model can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG2 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG3 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG4 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG5 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG6 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG7 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG8 is a schematic diagram of a flow chart of a network detection method provided by an embodiment of the present invention;

FIG9 is a schematic diagram of the structure of a network detection device provided by an embodiment of the present invention;

FIG10 is a schematic diagram of the structure of a network detection device provided by an embodiment of the present invention;

FIG11 is a schematic diagram of the structure of an edge computing cluster provided by an embodiment of the present invention;

FIG. 12 is a flow chart of a network detection method provided in an embodiment of the present invention.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described herein.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein are only for the purpose of describing the embodiments of the present invention and are not intended to limit the present invention.

As shown in FIG1 , an embodiment of the present invention provides a network detection method, the method comprising:

S110: Acquire first interface information of the Ethernet interface of the node under test;

S120: Send a first indication to the node under test;

S130: Receive a first message sent by the node under test based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message;

S140: Determine the interface connectivity between the detection node and the detected node according to the matching result of the second interface information and the first interface information.

Here, the node under test is each node in the edge computing cluster used to implement business functions, such as access nodes and storage nodes. The network where the node under test is located, such as a storage network, should be physically connected in advance before detection, and the network detection tool client can run on the node under test. The detection node is an independent node used to detect the connectivity of the node under test, such as a node that can be used to run the network detection tool server. The detection node is connected to the network where the node under test is located, and the IP address of the detection node has been configured. The Ethernet interface is an interface for network data connection, such as an FDDI interface, a BNC interface, a Console interface, etc. The first interface information is used to identify the identity of each Ethernet interface, such as interface names such as eth0 and eth1.

In one embodiment, before sending the first instruction to the node under test, the detection node can remotely use the preboot execution environment (Preboot eXecution Environment, PXE) or the remote intelligent platform management interface (Intelligent Platform Management Interface, IPMI) to start the self-generated operating system (LiveCD) on each node under test. After the LiveCD of the node under test is started, it starts to read the global configuration file and listen to the instructions of the detection node. The detection node sends a stop packet sending instruction to the node under test, so that the node under test no longer sends messages to enter a state suitable for network detection, thereby reducing the interference of the node under test sending messages for network detection with the detection node on one side and normal data message transmission and reception on the other side. After the node under test stops sending data messages, the detection node sends the first instruction to the node under test, and the node under test receives the first instruction and enters the detection state of network detection, that is, enters the state of sending data messages to other devices other than the detection node, and sends the first message to the detection node, so the detection node will receive the first message sent by the node under test after sending the first instruction.

In another embodiment, obtaining the first interface information of the Ethernet interface of the node under test can be to directly obtain the interface name of each interface in the node under test in the edge computing cluster, or to obtain the network information list of all networks in the edge computing cluster, such as storage networks, etc. The network information list may at least include: the interface name in the network, so as to provide a specific record of the interface combination information. According to the interface name recorded in the network information list of each network, an interface combination list of the network is generated, which contains a bidirectional fully connected combination of all interface names in the network. For example, if a business network has three interfaces with interface names a, b, and c, then the interface combination list of the business network includes [a-b, b-a, a-c, c-a, b-c, c-b].

In an embodiment of the present invention, the detection node may prepare a global configuration file in advance, which is used to indicate and record the virtual local area network identity (VLAN Identity document, VLAN ID) information, expected MTU value, binding interface and its subordinate interface relationship of each network in the edge computing cluster, wherein the binding interface is an independent interface formed by binding multiple physical interfaces. Traverse all Ethernet interfaces on the host in the node under test and obtain the first interface information. Optionally, obtain the interface name of each Ethernet interface and record it. A first indication is generated in the server of the detection node, and the first indication is used to instruct the node under test to send a first message of a preset format and content. For example, a "send message" instruction is used to instruct the node under test to start sending a message, and the first indication is sent to the client running on the node under test.

The first message is used for the detection node and the tested node to send and receive to test the connectivity between the nodes. The format and content of the first message are defined by the detection node, and the format can be JS Object Notation (JSON) format. For the first message content, its initial message content can be determined first, and the initial message contains at least the serial number of the host of the tested node, the second interface information for identifying the interface sending the message, the VLAN ID, the MTU length value, and the timestamp when the message is sent. The VLAN ID is obtained from the configuration file. The actual message content is the initial message content plus a space of length N, and N is obtained by subtracting the initial message length, the Internet Protocol (IP) header length (20 bytes) of the tested node, and the User Datagram Protocol (UDP) header (8 bytes) of the tested node from the expected MTU length (T1). Optionally, based on the second interface information and the interface of the detection node receiving the message, the source interface and destination interface of each first message transmission can be obtained. Correspondingly, matching is performed based on the second interface information recorded in the message and the obtained first interface information, or matching is performed in the interface information list of the corresponding network based on the combination of the source interface and destination interface of the message, so as to determine the connectivity of the interface between the tested node and the detection node to be detected in the network.

In this way, the node under test sends a message carrying interface identification information to the detection node, so that the detection node can clearly know the interface that sent the first message, so as to more specifically determine the Ethernet interface to be tested of the node under test in the connectivity test. Based on the interface information in the received message, it can be matched with the full interface information in the node to accurately determine the connectivity problems existing in the network. Moreover, the interface information of successful or failed connectivity can also be accurately obtained, so as to record and provide accurate and comprehensive problem reports to testers for repair.

In some embodiments, as shown in FIG2 , the method further includes:

S150: Receive the first message with a maximum transmission unit MTU length value of a first threshold value sent by the measured node based on the first indication;

S160: receiving a plurality of first messages, which are sent sequentially by the measured node based on the first threshold and whose MTU length values are increased according to a preset interval value;

S170: Determine a maximum MTU length according to the received MTU length values of the multiple first messages.

In an embodiment of the present invention, the first indication may also carry a value range of the MTU length value, for example, including a first threshold of 1400 and a preset interval value of 100. Optionally, the first indication may also carry a second threshold, wherein the second threshold is greater than the first threshold, for example, the second threshold may be 9600. After receiving the first indication, the node under test first sends a first message with an MTU length value of 1400, and then, based on the preset interval value of 100, sequentially sends multiple first messages with MTU length values of 1500, 1600, 1700 ... 9600. Since the interface of the node under test has a maximum MTU length, when the MTU length value of the first message exceeds the maximum MTU length that the interface can bear, the node under test cannot continue to send the first message. Similarly, since the interface of the detection node has different maximum MTU lengths, when the MTU length value of the first message exceeds the maximum MTU length that the detection node can bear, the detection node cannot continue to receive the first message. Therefore, according to the MTU length values of all first messages received by the final detection node, the maximum MTU length that can be transmitted in the network can be determined.

In this way, the maximum MTU length that can be used for transmission in the network where the node under test and the detection node are located can be detected by sending multiple first messages carrying different MTU length values from the node under test. While using the node under test to send messages to detect reachability, the maximum MTU length can be determined at the same time, thereby obtaining the data transmission capacity in the network.

In some embodiments, as shown in FIG3 , the S170 includes:

S171: If multiple first messages are successfully received, read the MTU length value of each received first message, and determine the maximum MTU length value among the multiple first messages.

In an embodiment of the present invention, for all first messages that are finally successfully received by the detection node, the MTU length value is obtained to determine the maximum MTU length. Optionally, when the detection node does not receive the first message again within a preset time after the last reception of the first message, it is determined that the first message sending of this detection cycle has ended, and then the MTU length value of each first message is read.

In one embodiment, each time the detection node receives a first message, it immediately reads and records the MTU length value carried in the message. After the detection cycle ends, it compares all the counted MTU length values to determine the maximum MTU length.

In another embodiment, since the node under test sends first messages with different MTU length values in ascending order, the time sequence of the first messages received by the detection node is also in ascending order according to the MTU length value. Therefore, after a detection cycle ends, the MTU length value of the last received first message should be the maximum MTU length in this cycle. Therefore, if multiple first messages are successfully received, the MTU length value of the last received first message is read and determined as the maximum MTU length.

In this way, since the maximum value of the MTU length that can be transmitted by each node is different, after the message sending and receiving process of the detection node and the detected node is completed, the maximum value among them is determined by reading and comparing the MTU length value of each message, that is, the maximum value of the MTU length that can be transmitted by the detected node and the network where the detection node is located. Then, based on the maximum value of the MTU length, the data transmission capacity of the network can be analyzed.

In some embodiments, as shown in FIG4 , the method further includes:

S100: Determine the type of the Ethernet interface in the node under test;

S101: Determine physical interface information of the Ethernet interface according to the type of the Ethernet interface, wherein the physical interface information is used to be carried by the first indication and sent to the measured node, so that the measured node can determine the physical interface corresponding to the Ethernet interface that sends the first message.

In an embodiment of the present invention, the type of the Ethernet interface in the node under test is determined, for example, it is determined that the type of the eth0 interface is a wired interface, and then according to the determined Ethernet interface type, the physical interface information mapped by the Ethernet interface in the network is determined, for example, the physical interface information corresponding to the eth0 wired interface is a straight-through network card physical function (Single Root I/O Virtualization Physical Function, SRIOV PF) interface. After determining the types of all Ethernet interfaces, the physical interface information mapped by all Ethernet interfaces in the node under test is recorded. The first indication can carry the recorded physical interface information and be sent to the node under test, instructing the node under test to send a first message through the physical interface corresponding to the physical interface information.

In this way, the sending interface of the node under test can be limited to the physical interface, and the reachability test of the physical interface in the network can be realized. According to the seven-layer definition in the Open System Interconnection Reference Model (OSI), the 2-layer network is the data link layer. Based on the connectivity test of the physical interface, the connectivity test of the 2-layer network of the edge computing cluster can be realized.

In some embodiments, the first indication is used to instruct the measured node to send the first message according to the physical interface information. The measured node can determine the message to be sent and the interface to send the message according to the message content format of the first indication and the physical interface information.

In this way, the node under test can send the first message only through the required physical interface to implement the reachability test of the physical interface in the network, and then realize the connectivity detection of the 2-layer network of the edge computing cluster, thereby improving the efficiency of separate testing of the network layered architecture.

In some embodiments, the obtaining of the first interface information of the Ethernet interface of the node under test at least includes: obtaining the interface name of the Ethernet interface of the node under test.

The interface name is the identification information of the Ethernet interface, such as eht0, eth1, etc. By identifying the Ethernet interface to be tested based on the interface name, accurate detection of network connectivity can be achieved in advance before the network is fully deployed, that is, before the IP address of the interface is configured.

In some embodiments, as shown in FIG5 , the S140 includes:

S141: If there is the first interface information matching the second interface information, determining that the interface between the detection node and the detected node is connected;

S142: If the first interface information matching the second interface information does not exist, determine that the interface between the detection node and the detected node is not connected.

In an embodiment of the present invention, the second interface information carried in the received first message represents the interface to be tested in the tested node that has successfully transmitted with the detection node. The first interface information represents the full interface information of the Ethernet interface in the tested node, and the two are matched. If there is first interface information matching the second interface information in the full first interface information of the tested node, it indicates that the interface that currently successfully transmits the message with the detection node comes from the target tested node.

In one embodiment, the detection node reads the source interface and the destination interface in the received first message, wherein the source interface is the interface in the detected node that sends the first message, that is, the interface corresponding to the second interface information; the destination interface is the interface in the detection node that receives the first message. And based on the interface combination list generated according to the network information list of each network, the combination of the source interface and the destination interface in the first message is searched in the interface combination list. If the same interface combination exists in the list, it indicates that the networks where the source interface and the destination interface are located are connectable.

In another embodiment, the first messages received by all detection nodes in the edge computing cluster are collected, and the message contents are recorded in a message list, which at least includes: the source interface and destination interface of the first message, and the detection node and the node under test to which it belongs. The interface combination is obtained in the interface combination list, and a search and match is performed in the message list. If there is a first message corresponding to the same interface combination, it indicates that the network where the source interface and the destination interface are located is connected. For example: search for the source interface information in the message list. If it is not found, it is recorded in the problem report. The cause of the problem is: the server is not found, and the source interface and destination interface of the current connection test, the detection node and the node under test are noted, and then the search and match continues;

Search the tested node information in the message list. If not found, record it in the problem report. The problem reason is: the source node is not found, and note the source interface and destination interface of the current connection test, the detection node and the tested node, and then continue to search for matches;

If no matching value is found, it will be recorded in the problem report. The cause of the problem is: the network card connection is wrong or the switch VLAN is not configured correctly. The source interface and destination interface of the current connection test, the detection node and the tested node will be noted, and then continue to search for matches;

If a match is found, compare the maximum MTU length determined above with the expected MTU value recorded in the global configuration file. If the maximum MTU length is less than the expected MTU value, record it in the problem report, and the cause of the problem is: the network MTU is less than the expected MTU value, and note the source and destination interfaces of the current connection test, the detection node and the node being tested, and then continue to search for a match;

As shown in FIG6 , an embodiment of the present invention provides a network detection method, which is applied to a node under test in an edge computing cluster, including:

S210: Receive the first indication sent by the detection node;

S220: Send the first message based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the measured node that sends the first message; the second interface information is used for the detection node to determine the interface connectivity between the detection node and the measured node based on a matching result with the first interface information.

In the embodiment of the present invention, after receiving the first instruction, the node under test sends a first message of specified content to the detection node, wherein the first message carries at least the second interface information of the message to be sent, which is provided to the detection node, and the detection node matches the first interface information with the second interface information, and determines the connectivity between the detection node and the node under test based on the matching result.

In one embodiment, before the tested node receives the first indication for the first time and enters the detection program, the tester can remotely use the preboot execution environment (Preboot eXecution Environment, PXE) or the remote intelligent platform management interface (Intelligent Platform Management Interface, IPMI) to start the self-generated operating system (LiveCD) on each tested node. After the LiveCD of the tested node is started, it starts to read the global configuration file and listen to the instructions of the detection node. The tested node receives the "stop sending packets" instruction and the "listen for messages" instruction sent by the detection node, initializes its own packet sending state, and prepares to receive the first indication.

In another embodiment, the node under test reads the physical interface information carried in the first indication of the detection node, determines the physical interface in the node corresponding to the physical interface information, and then sends the first message to the detection node through the determined physical interface.

In this way, the node under test enters the network connectivity detection phase by receiving the instruction of the detection node and sending the first message with the specified content, so that the detection node can accurately know the information of the sending interface of the first message. Then, the detection node can match and determine the connectivity of the specified interface, and can also generate a more accurate and comprehensive problem report for testers to debug the network.

In some embodiments, as shown in FIG. 7 , the S220 includes:

S221: Sending the first message with the MTU length value being a first threshold based on the first indication;

S222: Based on the first threshold, send in sequence a plurality of first messages whose MTU length values increase incrementally according to a preset interval value.

In the embodiment of the present invention, the first indication received by the measured node carries a value range of the MTU length value, for example, including a first threshold value of 1400 and a preset interval value of 100. After receiving the first indication, the measured node first sends a first message with an MTU length value of 1400, and then, based on the preset interval value of 100, sequentially sends multiple first messages with MTU length values of 1500, 1600, 1700, ...

Since the interface of the node under test has a maximum MTU length, when the MTU length value of the first message exceeds the maximum MTU length that the interface can bear, the node under test cannot continue to send the first message. Similarly, since the interface of the detection node has different maximum MTU lengths, when the MTU length value of the first message exceeds the maximum MTU length that the detection node can bear, the detection node cannot continue to receive the first message. Therefore, based on the MTU length values of all first messages received by the final detection node, the maximum MTU length that can be transmitted in the network can be determined.

In this way, the maximum MTU length that can be used for transmission in the network where the node under test and the detection node are located can be detected by sending multiple first messages carrying different MTU length values from the node under test. While using the node under test to send messages to detect reachability, the maximum MTU length can be determined at the same time, thereby obtaining the data transmission capacity in the network.

In some embodiments, as shown in FIG8 , the method further includes:

S223: When the MTU length value of the first message reaches a second threshold, stop sending the first message.

In an embodiment of the present invention, the first indication may also carry a second threshold, wherein the second threshold is greater than the first threshold. For example, a first threshold of 1400 and a preset interval value of 100 are included, and a second threshold of 9600 is included. After receiving the first indication, the node under test first sends a first message with an MTU length value of 1400, and then, based on the preset interval value of 100, sends multiple first messages with MTU length values of 1500, 1600, 1700 ... 9600 in sequence. Since the interface of the node under test has a maximum MTU length, when the MTU length value of the first message exceeds the maximum MTU length that the interface can bear, the node under test cannot continue to send the first message. Similarly, since the interface of the detection node has different maximum MTU lengths, when the MTU length value of the first message exceeds the maximum MTU length that the detection node can bear, the detection node cannot continue to receive the first message. Therefore, by setting the second threshold of the MTU length value of the first message, the invalid message sending process can be stopped in time.

In this way, for the detection node and the tested node that need to detect the data transmission capacity, since the maximum value of the MTU length that can be transmitted by the two nodes is uncertain, for the first message sent by the tested node carrying the increasing sequence MTU length value, a second threshold should be set to reasonably limit the sending process of the first message. For the tested node whose maximum MTU length is less than the second threshold, the waste of resources generated by the message that cannot be sent can be reduced, and the network detection efficiency can be improved.

As shown in FIG9 , an embodiment of the present invention provides a network detection device, which is applied to a detection node in an edge computing cluster, including:

The acquisition module 110 is used to acquire first interface information of the Ethernet interface of the node under test;

A first sending module 120, configured to send a first indication to the node under test;

A first receiving module 130 is configured to receive a first message sent by the node under test based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message;

The determination module 140 is used to determine the interface connectivity between the detection node and the detected node according to the matching result of the second interface information and the first interface information.

In some embodiments, the first receiving module 130 is further configured to:

Receiving the first message with a maximum transmission unit MTU length value of a first threshold value sent by the measured node based on the first indication;

Receiving a plurality of first messages, which are sent sequentially by the measured node based on the first threshold and whose MTU length values are increased according to a preset interval value;

The determination module 140 is further configured to:

Determine the maximum MTU length based on the MTU length values of the multiple received first messages.

In some embodiments, the determining module 140 is specifically configured to:

If multiple first messages are successfully received, read the MTU length value of each received first message, and determine the maximum MTU length value among the multiple first messages.

In some embodiments, the determining module 140 is further configured to:

Determining the type of the Ethernet interface in the node under test;

According to the type of the Ethernet interface, determine the physical interface information of the Ethernet interface, wherein the physical interface information is used to be carried by the first indication and sent to the node under test, so that the node under test can determine the physical interface corresponding to the Ethernet interface that sends the first message.

In some embodiments, the determining module 140 is specifically configured to:

If there is the first interface information matching the second interface information, determining that the interface between the detection node and the measured node is connected;

If the first interface information matching the second interface information does not exist, it is determined that the interface between the detection node and the detected node is not connected.

As shown in FIG10 , an embodiment of the present invention provides a network detection device, which is applied to a node under test in an edge computing cluster, including:

A second receiving module 210, configured to receive the first indication sent by the detection node;

The second sending module 220 is used to send the first message based on the first indication, wherein the first message carries at least the second interface information of the Ethernet interface of the measured node to send the first message; the second interface information is used for the detection node to determine the interface connectivity between the detection node and the measured node based on the matching result with the first interface information.

In some embodiments, the second sending module 220 is specifically configured to:

Sending the first message with the MTU length value being a first threshold based on the first indication;

Based on the first threshold, a plurality of the first messages whose MTU length values increase incrementally according to a preset interval value are sent in sequence.

In some embodiments, the apparatus further comprises:

The stopping module 230 is configured to stop sending the first message when the MTU length value of the first message reaches a second threshold.

A specific example is provided below in combination with any of the above embodiments:

1. As shown in Figure 11, the network detection tool is divided into a server and a client. The server runs on an independent detection node, and requires that the management network of the detection node and all nodes of the edge computing cluster under test are connected and the IP address is configured. The business network, storage network, and external network of each node under test are physically connected to each other in advance, and IP and VLAN configuration is not required. The client runs on each node under test.

2. Prepare a global configuration file, which needs to specify the VLAN ID information, MTU expected value, BOND binding interface and its subordinate port relationship of each server's business network, storage network, and external network.

3. The network detection personnel load the virtual ISO remotely using PXE or remote IPMI to start the self-generated operating system (LiveCD) with the network detection tool on each server.

4. After the self-generated operating system of each node under test is started, the network monitoring tool client will automatically start, read the global configuration file, and listen to the call commands of the server, including sending messages, stopping packet sending, and monitoring messages.

5. The server sends a "stop sending packets" command to the clients of all nodes to ensure that all nodes are in the initial state.

6. The server sends a "listen message" command to the clients of all nodes to ensure that the current packet sending status of all nodes is in the listening state.

7. Define a specific message group P. The message group requirements are as follows:

a) Get the host serial number of this node, which can be used to distinguish the source of the message later.

b) Define the initial message content, which can be in json format and at least include the host serial number of the host, network interface name, network VLAN ID, MTU length value, and timestamp when the message is sent. The vlan_id is obtained from the configuration file.

c) The actual message content is: initial message content + space of length N. N = expected MTU length (T1) - initial message length - IP header length (20 bytes) - UDP header (8 bytes).

8. As shown in Figure 12, send the "send message" command to the network detection tools of all nodes. The message group P is required to be sent to the specified port list L repeatedly for 3 times to avoid incorrect results due to packet loss in special circumstances. The requirements for the message group sent each time are as follows:

a) Traverse all network interfaces on the host and generate an interface list L1.

b) Determine each interface and remove the local loopback interface, SRIOV VF interface, virtual network card interface, and VLAN interface in L1, leaving only the physical port, SRIOV PF port, and BOND binding port for subsequent detection to generate the interface list L2.

c) Determine each interface. If it is a BOND port, find all its slave interfaces (slave), record the slave relationship, and add it to L2 to generate the interface list L.

d) For each interface in the list L, and for multiple combinations of MTU lengths, a broadcast message P is sent out, and all the relevant interfaces of the nodes will receive the message under normal circumstances. The MTU length range is 1400, 1500, 1600...9600, increasing by 100 each time. The actual content of the message P needs to be filled in: the name of the interface sending the message, the MTU value of the message sent this time: mtu, the negotiated rate duplex mode, and the current timestamp of the message sent.

9. The network detection tools of all nodes monitor the messages sent from the interface and save the message contents to list C.

10. Check the sending status of all node network detection tools and wait for all node messages to be sent.

11. At the network monitoring tool server, collect the message content list C of all nodes. The message content includes: source/destination host node serial number, source/destination network card interface name, source network card interface name, VLAN_ID, MTU, connection rate, duplex mode, and timestamp.

12. At the network monitoring tool server, compare the message connection information and record the problem report R. The comparison method is as follows:

a) Traverse all node information and obtain the node sequence number.

b) Traverse all networks, including network types: business network, storage network, external network, obtain the expected vlan_id, expected mtu, bond slave interface of the network, and save them in the dictionary (all_networks) according to the dictionary structure: {network type: {node serial number: {network information}}}.

c) Based on the above information, generate network information lists for the business network, storage network, and external network, which include all node serial numbers and network card names.

d) Generate a fully connected combination list of network card interfaces based on the network information list.

e) Traverse the source node S1, source network card N1, destination node D1, destination network card M1 in the fully connected combination list, and according to the information in all_network, take out the expected vlan_id: V1 of each network.

f) During the traversal, if the source node and the destination node have the same name, skip and continue.

g) Search for the source node (H) information in the message content list C. If it is not found, record it in the problem report R. The problem reason is: server H is not found, and note the source node, source network card, destination node, and destination network card of the current connection test. Then skip and continue.

h) Search for the source network card (D) information in the message content list C. If it is not found, record it in the problem report R. The problem reason is: the source network card D is not found, and note the source node, source network card, destination node, and destination network card of the current connection test. Then skip and continue.

i) Search the list (SL) of all source network card names connected to the source network card (D) in the message content list C, and initialize the variable "network card connection status" (has_connected_netdev) to "false" (False).

j) Traverse all connected source network card name lists (SL) and obtain the source node serial number S2, source network card N2, actual vlan id: V2, and actual tested mtu value.

k) If a network card match is found in the source network card name list (SL): D1 = S2, M1 = N2, and V1 = V2, then save the variable has_connected_netdev as "True" and record the maximum test mtu value under the network card match: T2.

l) If no matching value is found after all source network card name lists (SL) are traversed (i.e. has_connected_netdev is "false"), record it in the problem report R, the cause of the problem is: network card connection error or switch VLAN is not configured correctly, and note the source node, source network card, destination node, and destination network card of the current connection test. Then skip and continue.

m) If a match is found after all the source network card name lists (SL) are traversed (i.e. has_connected_netdev is "true"), compare the maximum MTU value T2 with the expected MTU value T1 in the configuration file. If T2 is less than T1, record it in the problem report R, the cause of the problem is: the network MTU is less than the expected MTU value, and note the source node, source network card, destination node, and destination network card of the current connection test. Then skip and continue.

n) Read the global configuration, find the BOND bonded network card and its subordinate interface relationship, and compare them with the negotiated rate and duplex mode in the message content list C. If it is found that the actual negotiated rates or actual duplex modes of multiple subordinate interfaces under the same bonded network card are inconsistent, record it as a BOND network card subordinate interface rate or duplex inconsistency problem in the R problem record, and then skip to continue.

13. Return the problem report result R to the network connectivity tester.

An embodiment of the present invention further provides an electronic device, comprising: a processor and a memory for storing a computer program that can be run on the processor, and when the processor runs the computer program, the steps of the method described in one or more of the above technical solutions are executed.

An embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. After the computer-executable instructions are executed by a processor, the methods described in one or more of the above-mentioned technical solutions can be implemented.

The computer storage medium provided in this embodiment may be a non-transient storage medium.

In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

In addition, all functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented by hardware or by hardware plus software functional units.

In some cases, if any two of the above technical features do not conflict with each other, they can be combined into a new method technical solution.

In some cases, if any two of the above technical features do not conflict with each other, they can be combined into a new equipment technical solution.

A person of ordinary skill in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks or optical disks, etc., various media that can store program codes.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (19)

1. A network detection method, characterized in that it is applied to a detection node in an edge computing cluster, comprising: Obtaining first interface information of the Ethernet interface of the node under test; Sending a first indication to the node under test; Receiving a first message sent by the node under test based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message; Determine the interface connectivity between the detection node and the node under test according to the matching result of the second interface information and the first interface information; Among them, the obtaining of the first interface information of the Ethernet interface of the node under test includes: obtaining the interface name of the Ethernet interface of the node under test; the second interface information includes: the interface name of the Ethernet interface that sends the first message; the detection node is an independent node used to detect the connectivity of the node under test. 2. The method according to claim 1, characterized in that the method further comprises: Receiving the first message with a maximum transmission unit MTU length value of a first threshold value sent by the measured node based on the first indication; Receiving a plurality of first messages, which are sent sequentially by the measured node based on the first threshold and whose MTU length values are increased according to a preset interval value; Determine the maximum MTU length based on the MTU length values of the multiple received first messages. 3. The method according to claim 2, wherein determining the maximum MTU length according to the MTU length values of the received plurality of first messages comprises: If multiple first messages are successfully received, read the MTU length value of each received first message, and determine the maximum MTU length value among the multiple first messages. 4. The method according to claim 1, characterized in that the method further comprises: Determining the type of the Ethernet interface in the node under test; According to the type of the Ethernet interface, determine the physical interface information of the Ethernet interface, wherein the physical interface information is used to be carried by the first indication and sent to the node under test, so that the node under test can determine the physical interface corresponding to the Ethernet interface that sends the first message. 5 . The method according to claim 4 , wherein the first indication is used to instruct the node under test to send the first message according to the physical interface information. 6. The method according to claim 1, characterized in that the determining the interface connectivity between the detection node and the detected node according to the matching result of the second interface information and the first interface information comprises: If there is the first interface information matching the second interface information, determining that the interface between the detection node and the measured node is connected; If the first interface information matching the second interface information does not exist, it is determined that the interface between the detection node and the detected node is not connected. 7. A network detection method, characterized in that it is applied to a tested node in an edge computing cluster, comprising: receiving a first indication sent by a detection node; Sending a first message based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message; the second interface information is used for the detection node to determine the interface connectivity between the detection node and the node under test according to a matching result with the first interface information; The second interface information includes: the interface name of the Ethernet interface that sends the first message; the first interface information includes: the interface name of the Ethernet interface of the node under test; the detection node is an independent node used to detect the connectivity of the node under test. 8. The method according to claim 7, wherein sending the first message based on the first indication comprises: Sending the first message with the MTU length value being a first threshold based on the first indication; Based on the first threshold, a plurality of the first messages whose MTU length values increase incrementally according to a preset interval value are sent in sequence. 9. The method according to claim 8, characterized in that the method further comprises: When the MTU length value of the first message reaches a second threshold, stop sending the first message. 10. A network detection device, characterized in that it is applied to a detection node in an edge computing cluster, comprising: An acquisition module, used to acquire first interface information of the Ethernet interface of the node under test; A first sending module, used to send a first indication to the node under test; A first receiving module, configured to receive a first message sent by the node under test based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message; A determination module, configured to determine the interface connectivity between the detection node and the detected node according to a matching result of the second interface information and the first interface information; The acquisition module is specifically used to: acquire the interface name of the Ethernet interface of the node under test; The second interface information includes: the interface name of the Ethernet interface that sends the first message; the detection node is an independent node used to detect the connectivity of the node under test. 11. The device according to claim 10, wherein the first receiving module is further used for: Receiving the first message with a maximum transmission unit MTU length value of a first threshold value sent by the measured node based on the first indication; Receiving a plurality of first messages, which are sent sequentially by the measured node based on the first threshold and whose MTU length values are increased according to a preset interval value; The determining module is also used for: Determine the maximum MTU length according to the MTU length values of the received multiple first messages. 12. The device according to claim 11, characterized in that the determining module is specifically used to: If multiple first messages are successfully received, read the MTU length value of each received first message, and determine the maximum MTU length value among the multiple first messages. 13. The device according to claim 10, wherein the determining module is further configured to: Determining the type of the Ethernet interface in the node under test; According to the type of the Ethernet interface, determine the physical interface information of the Ethernet interface, wherein the physical interface information is used to be carried by the first indication and sent to the node under test, so that the node under test can determine the physical interface corresponding to the Ethernet interface that sends the first message. 14. The device according to claim 10, characterized in that the determining module is specifically used to: If there is the first interface information matching the second interface information, determining that the interface between the detection node and the measured node is connected; If the first interface information matching the second interface information does not exist, it is determined that the interface between the detection node and the detected node is not connected. 15. A network detection device, characterized in that it is applied to a node under test in an edge computing cluster, comprising: A second receiving module, used to receive a first indication sent by the detection node; A second sending module, configured to send a first message based on the first indication, wherein the first message carries at least second interface information of the Ethernet interface of the node under test that sends the first message; the second interface information is used by the detection node to determine the interface connectivity between the detection node and the node under test according to a matching result with the first interface information; The second interface information includes: the interface name of the Ethernet interface that sends the first message; the first interface information includes: the interface name of the Ethernet interface of the node under test; the detection node is an independent node used to detect the connectivity of the node under test. 16. The device according to claim 15, characterized in that the second sending module is specifically used to: Sending the first message with the MTU length value being a first threshold based on the first indication; Based on the first threshold, a plurality of the first messages whose MTU length values increase incrementally according to a preset interval value are sent in sequence. 17. The device according to claim 16, characterized in that the device further comprises: A stopping device is used to stop sending the first message when the MTU length value of the first message reaches a second threshold. 18. An electronic device, characterized in that the electronic device comprises: a processor and a memory for storing a computer program that can be run on the processor; wherein: When the processor runs the computer program, the processor executes the steps of the network detection method according to any one of claims 1 to 9. 19. A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the network detection method according to any one of claims 1 to 9 can be implemented.