JP7436060B2 - Management device, control method, and program - Google Patents

Description

The present invention relates to a management device, a control method, and a program.

There is a management device (for example, a BMC (Baseboard Management Controller)) that is installed in an information processing device such as a server and manages the information processing device. The BMC can only collect logs from the information processing device on which it is installed.

Information processing devices such as servers may fail due to heat. This failure is not only caused by the heat generated by the information processing device itself, but also by the heat generated by other information processing devices, for example, an event may occur in which the power supply fan speeds up.

Patent Document 1 discloses a technique in which a server notifies a management server of a warning regarding temperature. Patent Document 2 discloses a technology in which the BMC mounted on each blade takes the place of the enclosure when the enclosure that acquires and manages information from the BMC mounted on each blade fails or is removed. .

Japanese Patent Application Publication No. 2021-144661 JP2016-167213A

In the technology disclosed in Patent Document 1, the temperature of the own information processing apparatus is normal, but the cause of the power fan of the own information processing apparatus becoming faster due to heat generation of another information processing apparatus is to be determined. is difficult. Furthermore, in the technique disclosed in Patent Document 2, blades to be managed are assigned after the enclosure fails, so blades that are not affected by heat generation may be assigned. In this case as well, it is difficult to identify the cause.

As described above, the related technology described above has a problem in that it becomes difficult to identify the cause of a failure due to heat generation.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a management device, a control method, and a program that make it easy to identify the cause of failures caused by heat generation.

According to one aspect of the present invention, the management device is an acquisition unit that acquires temperature information of an information processing device adjacent to an information processing device in which the management device is installed, and the management device receives a signal indicating temperature abnormality from the adjacent information processing device. When it receives a signal indicating that the temperature has returned to normal from the adjacent information processing device, it starts acquiring temperature information according to the asserted flag, and when it receives a signal from the adjacent information processing device indicating that the temperature has returned to normal, it starts acquiring temperature information according to the deasserted flag. and recording means for recording the temperature information acquired by the acquisition means .

According to another aspect of the present invention, the control method is to obtain temperature information of an information processing device adjacent to the information processing device in which the control method is mounted, the control method including receiving a signal indicating temperature abnormality from the adjacent information processing device. When it receives a signal indicating that the temperature has returned to normal from the adjacent information processing device, it starts acquiring temperature information according to the asserted flag, and when it receives a signal from the adjacent information processing device indicating that the temperature has returned to normal, it starts acquiring temperature information according to the deasserted flag. and record the obtained temperature information.

According to another aspect of the present invention, the program is an acquisition means for causing a computer of a management device that manages an information processing device to acquire temperature information of an information processing device in which the computer is installed and an adjacent information processing device. When a signal indicating temperature abnormality is received from an adjacent information processing device, the acquisition of temperature information is started according to the asserted flag, and when a signal indicating that the temperature has returned to normal is received from an adjacent information processing device. , an acquisition means for terminating the acquisition of temperature information according to the deasserted flag, and a recording means for recording the temperature information acquired by the acquisition means .

According to the present invention, it is possible to provide a management device, a control method, and a program that make it easy to identify the cause of a failure due to heat generation.

FIG. 2 is a block diagram showing the configuration of a BMC according to an embodiment of the present invention. FIG. 3 is a diagram showing an example of communication connection. FIG. 3 is a diagram showing an example of communication connection. 3 is a flowchart showing the flow of processing when initializing BMC. It is a flowchart which shows the flow of processing when BMC receives a temperature abnormality signal. It is a diagram showing the minimum configuration of a management device.

Hereinafter, a BMC according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a BMC 100 according to an embodiment. BMC 100 is sometimes called a management device. Further, the BMC 100 manages the information processing device in which it is installed. In this embodiment, an information processing device will be described as a server. The BMC 100 includes a signal transmission/reception section 101, an acquisition section 102, a recording section 103, a temperature detection section 104, and a device information storage section 140.

The signal transmitting/receiving unit 101 receives various signals transmitted from other servers and transmits various signals to other servers. In this embodiment, another server is a server that affects its own server by heat, and includes, for example, a server that is adjacent vertically or horizontally provided in the same rack as itself. In the following description, unless otherwise specified, "server" refers to another server.

The signals received by the signal transmitting/receiving unit 101 include a signal indicating temperature abnormality (hereinafter also referred to as "temperature abnormality signal"), a signal indicating temperature information (hereinafter also referred to as "temperature signal"), and a signal indicating temperature abnormality. There is a signal indicating that the temperature has returned to normal (hereinafter also referred to as a "normal return signal").

The acquisition unit 102 acquires temperature information of the server. The acquisition unit 102 starts acquiring temperature information upon receiving the temperature abnormality signal from the server. When the acquisition unit 102 receives a normal return signal from an adjacent server, it finishes acquiring the temperature information. The recording unit 103 records the temperature information acquired by the acquisition unit 102. The temperature information is stored in the device information storage section 140. The temperature information includes at least the temperature of the server. The unit of temperature is, for example, °C, and the temperature information when the temperature is 50 °C is information indicating 50. In this embodiment, the temperature information includes, in addition to the temperature, detection date and time information indicating the date and time when the temperature was detected. Further, the acquisition unit 102 acquires temperature information at intervals of, for example, one minute.

The temperature detection unit 104 detects the temperature of its own server. Depending on the detected temperature, the signal transmitting/receiving unit 101 transmits a temperature abnormality signal, a temperature signal, a normal return signal, and the like.

The device information storage unit 140 stores server related information 150-1, . . . , 150-n for each server. The example in FIG. 1 shows a case where there are n servers. For example, if there are only two servers, upper and lower, server related information 150-1 and 150-2 are stored. In the following description, the server-related information 150-1, . . . , 150-n may be expressed as server-related information 150 when not particularly distinguished from each other.

The server related information 150 includes server identification information 151, a temperature table 152, and an acquisition identification flag 153. Server identification information is information that uniquely identifies a server. The server identification information is, for example, the IP address or machine number of the server. The temperature table 152 is a table that stores temperature information of the server. The temperature table records the date and time when temperature information was acquired, the date and time of detection, and the temperature. In the following explanation, the server identification information will be explained as an IP address, but it may be a machine number or both an IP address and a machine number. BMC 100 can output server-related information 150 to other devices (for example, a management server that manages servers). This allows other devices to obtain temperature information of a server different from the server that provides the server-related information 150. Note that the device information storage section 140 is provided with its own server-related information 150. Therefore, its own temperature information is also recorded.

The acquisition identification flag 153 is a flag indicating whether temperature information is currently being acquired from the server specified by the server identification information. When the acquisition identification flag 153 is asserted, it indicates that temperature information is currently being acquired.

In the above configuration, when a temperature transition occurs in the temperature sensor installed on the server while the server is in operation and the temperature exceeds the threshold, the BMC of this server sends a temperature abnormality signal to the BMC of other servers. Send. The threshold value is, for example, a threshold value set lower than a warning or abnormality threshold value set in a temperature sensor, or a temperature threshold value for changing the rotation speed set in a FAN control flow.

When the signal transmitting/receiving unit 101 receives the temperature abnormality signal, it asserts the acquisition identification flag 153. Upon receiving the normal return signal, the signal transmitting/receiving unit 101 deasserts the acquisition identification flag 153. At this time, since the IP address of the server that transmitted the temperature abnormality signal is known, the signal transmission/reception unit 101 identifies the server that transmitted the temperature abnormality signal based on the server identification information 151 stored in the device information storage unit 140.

The acquisition unit 102 accesses the specified server and acquires temperature information. The recording unit 103 records the acquired temperature information (date and time of acquisition, date and time of detection, and temperature) in a temperature table 152 of server-related information corresponding to the acquired server. By having another device acquire the temperature information recorded in this way, the date and time of acquisition, date and time of detection, and temperature can be obtained, making it easy to determine whether the heat is generated by the device itself or by an adjacent server. This makes it easier to identify the cause of problems caused by heat.

Note that if the number of temperature information that can be recorded in the temperature table 152 is exceeded, the recording unit 103 may overwrite the temperature information. As an example of overwriting, there is a method in which only the temperature information with the oldest detection date and time is left without being overwritten, and other temperature information is targeted for overwriting. In this way, by leaving the temperature information of the one with the oldest detection date and time, it becomes possible to determine when the abnormality was detected.

Next, two communication connection examples of the BMC 100 will be described. FIG. 2 is a diagram showing an example (part 1) of communication connections. FIG. 2 shows a rack 500, servers 300-1, ..., 300-N-1, 300-N, 300-N+1, and BMCs 100-1, ..., 100-N-1, 100-N, 100-N+1. , wired communication units 200-1, . . . , 200-N-1, 200-N, 200-N+1, and a communication line 400.

When k is 1 to N+1, a BMC 100-k and a wired communication unit 200-k are installed in the server 300-k. The wired communication units 200-k can be connected to each other via communication lines 400. In the following description, the servers 300-1, . . . , 300-N-1, 300-N, and 300-N+1 may be expressed as servers 300 unless they are particularly distinguished. BMC100-1, . . . , 100-N-1, 100-N, 100-N+1 may be expressed as BMC100 when no particular distinction is made. The wired communication units 200-1, . . . , 200-N-1, 200-N, and 200-N+1 may be referred to as the wired communication unit 200 if no particular distinction is made. The wired communication unit 200 is, for example, a management LAN connector.

The communication connection example (part 1) is a suitable communication connection example when the server 300 is provided in the rack 500 and a rack management server is provided. The rack management server manages rack configurations, rack group configurations, IP addresses of each server 300, and the like.

If the BMCs can configure a management LAN via the communication line 400, the BMC 100 acquires the IP addresses of vertically adjacent servers and records them in the server identification information at the time of initialization. For example, at the time of initialization, the BMC100-N obtains the IP address of the upper BMC100-N-1 and the lower BMC100-N+1 from the rack management server, and obtains the server identification information. to be recorded. In the rack management server, the positional relationship of each server 300 is recorded in advance. The rack management server provides the IP address of the BMC 100 located above and the IP address of the BMC 100 located below, depending on the recorded positional relationship. In this way, when acquiring the IP address of the BMC 100 located above and the IP address of the BMC 100 located below from the rack management server, "adjacent information processing device (server)" means This is an information processing device equipped with a BMC of the acquired IP address.

For example, if a temperature change is detected by the temperature sensor of the server 300-N while the server 300 is in operation, and the temperature exceeds a threshold value, the BMC 100-N that has experienced the temperature change is sent to the adjacent server from the wired communication unit 200-N. A temperature abnormality signal is transmitted to the BMC 100-N-1 of the server 300-N-1 via the wired communication unit 200-N-1 of the server 300-N-1. Similarly, the BMC 100-N sends a temperature abnormality signal from the wired communication unit 200-N to the BMC 100-N+1 of the server 300-N-1 via the wired communication unit 200-N+1 of the server 300-N+1, which is an adjacent server. Send.

When the BMC 100-N-1 of the server 300-N-1 receives the temperature abnormality signal, it identifies the server that sent the temperature abnormality signal from the server identification information, and obtains the acquisition identification flag 153 of the server related information 150 of the corresponding server. Assert. Similarly, upon receiving the temperature abnormality signal, the BMC 100-N+1 of the server 300-N+1 identifies the server that sent the temperature abnormality signal from the server identification information, and sets the acquisition identification flag 153 of the server related information 150 of the corresponding server. assert.

The BMC 100-N-1 of the server 300-N-1 accesses the BMC 100-N that sent the temperature abnormality signal, acquires temperature information, and records the acquired temperature information (date and time of acquisition, date and time of detection, and temperature). Similarly, the BMC 100-N+1 of the server 300-N+1 accesses the BMC 100-N that sent the temperature abnormality signal, acquires temperature information, and records the acquired temperature information (date and time of acquisition, date and time of detection, and temperature).

When a temperature change is detected by the temperature sensor of the server 300-N and the temperature becomes below the threshold value, the BMC 100-N where the temperature change has occurred is sent from the wired communication unit 200-N to the adjacent server 300-N-. A normal return signal is sent to the BMC 100-N-1 of the server 300-N-1 via the wired communication unit 200-N-1 of the server 300-N-1. Similarly, the BMC 100-N sends a normal return signal from the wired communication unit 200-N to the BMC 100-N+1 of the server 300-N-1 via the wired communication unit 200-N+1 of the server 300-N+1, which is an adjacent server. Send.

When the BMC 100-N-1 of the server 300-N-1 receives the normal return signal, it identifies the server that sent the normal return signal from the server identification information, and acquires the server-related information 150 of the corresponding server using the acquisition identification flag 153. deassert. Similarly, upon receiving the normal return signal, the BMC 100-N+1 of the server 300-N+1 identifies the server that sent the normal return signal from the server identification information, and sets the acquisition identification flag 153 of the server related information 150 of the corresponding server. Deassert.

FIG. 3 is a diagram showing an example (part 2) of communication connections. In addition to the communication connection example shown in FIG. 2, the communication connection example shown in FIG. 3 includes wireless communication units 600-1, . This is an example including 600-N and 600-N+1. When the wireless communication units 600-1, . . . , 600-N-1, 600-N, and 600-N+1 are not particularly distinguished, they may be expressed as the wireless communication unit 600.

The communication connection example (part 2) is a communication connection example suitable for cases where a rack management server is not provided. Alternatively, in the communication connection example (part 2), the server 300 is installed in a rack, but this communication connection example is also suitable for cases where the server is not installed in a rack. Therefore, although the rack 500 is shown in FIG. 3, the rack 500 may not be provided.

If the BMC 100 includes a wireless communication unit 600 and can communicate with the BMC 100 of an adjacent server 300 via the wireless communication unit 600, the BMC 100 acquires the IP addresses of the vertically adjacent servers at the time of initialization and performs server identification. Record information. For example, at the time of initialization, the BMC 100-N acquires the IP address of the upper BMC 100-N-1 and the IP address of the lower BMC 100-N+1, and records them in the server identification information. As described above, in the case of the communication connection example (part 2), the "adjacent information processing device (server)" is a server equipped with a BMC with which the wireless communication unit 600 can communicate.

For example, if a temperature change is detected by the temperature sensor of the server 300-N while the server 300 is in operation, and the temperature exceeds a threshold, the BMC 100-N that has undergone the temperature change will be sent to the adjacent server from the wireless communication unit 600-N. A temperature abnormality signal is transmitted to the BMC 100-N-1 of the server 300-N-1 via the wireless communication unit 600-N-1 of the server 300-N-1. Similarly, the BMC 100-N sends a temperature abnormality signal from the wireless communication unit 600-N to the BMC 100-N+1 of the server 300-N-1 via the wireless communication unit 600-N+1 of the server 300-N+1, which is an adjacent server. Send.

When the BMC 100-N-1 of the server 300-N-1 receives the temperature abnormality signal, it identifies the server that sent the temperature abnormality signal from the server identification information, and obtains the acquisition identification flag 153 of the server related information 150 of the corresponding server. Assert. Similarly, upon receiving the temperature abnormality signal, the BMC 100-N+1 of the server 300-N+1 identifies the server that sent the temperature abnormality signal from the server identification information, and sets the acquisition identification flag 153 of the server related information 150 of the corresponding server. assert.

The BMC 100-N-1 of the server 300-N-1 accesses the BMC 100-N that sent the temperature abnormality signal, acquires temperature information, and records the acquired temperature information (date and time of acquisition, date and time of detection, and temperature). Similarly, the BMC 100-N+1 of the server 300-N+1 accesses the BMC 100-N that sent the temperature abnormality signal, acquires temperature information, and records the acquired temperature information (date and time of acquisition, date and time of detection, and temperature).

When a temperature change is detected by the temperature sensor of the server 300-N and the temperature becomes equal to or lower than the threshold value, the BMC 100-N where the temperature change has occurred is sent from the wireless communication unit 600-N to the adjacent server 300-N-. A normal return signal is transmitted to the BMC 100-N-1 of the server 300-N-1 via the wireless communication unit 600-N-1 of the server 300-N-1. Similarly, the BMC 100-N sends a normal return signal from the wireless communication unit 600-N to the BMC 100-N+1 of the server 300-N-1 via the wireless communication unit 600-N+1 of the server 300-N+1, which is an adjacent server. Send.

When the BMC 100-N-1 of the server 300-N-1 receives the normal return signal, it identifies the server that sent the normal return signal from the server identification information, and acquires the server-related information 150 of the corresponding server using the acquisition identification flag 153. deassert. Similarly, upon receiving the normal return signal, the BMC 100-N+1 of the server 300-N+1 identifies the server that sent the normal return signal from the server identification information, and sets the acquisition identification flag 153 of the server related information 150 of the corresponding server. Deassert.

Next, the flow of processing of the BMC 100 will be explained. In the following description, the term "upper server" refers to a server located above the server adjacent to the server in which the BMC 100 that executes processing is installed. For example, in FIG. 3, when the server on which the BMC 100 that executes processing is installed is the server 300-N, the upper level server is the server 300-N-1. Further, the term "lower server" refers to a server located below among the servers adjacent to the server in which the BMC 100 that executes processing is mounted. For example, in FIG. 3, when the server on which the BMC 100 that executes processing is installed is the server 300-N, the lower server is the server 300-N+1. Further, in the flowchart below, an IP address is acquired as the server identification information, but as described above, an IP address and a machine number may be acquired.

FIG. 4 is a flowchart showing the process flow when initializing the BMC 100. Note that the initialization time is when the BMC 100 is powered on or when a reset is executed.

The BMC 100 determines whether or not the wireless communication unit 600 is installed in the server 300 in which the BMC 100 is installed (step S101). If the wireless communication unit 600 is not installed (step S101: NO), the BMC 100 acquires the IP address of the upper server (step S102). The BMC 100 acquires the IP address of the lower server (step S103).

Note that there is a possibility that the IP address of the higher-level server cannot be obtained in step S102. For example, if the server on which it is installed is the highest level server, there is no higher level server. Similarly, in step S103 above, there is a possibility that the IP address of the lower server cannot be obtained. For example, if the server on which it is installed is the lowest level server, there are no lower level servers. In this way, if there is no upper server or lower server, the IP address is set to NULL, so that it can be determined that the server could not be acquired. Note that the memory that holds the IP addresses acquired in step S102 and step S103 may be initialized with NULL from the beginning.

The BMC 100 records the obtained IP address of the higher-level server in the server identification information of the server-related information 150 corresponding to the higher-level server (step S104). The BMC 100 records the obtained IP address of the higher-level server in the server identification information of the server-related information 150 corresponding to the higher-level server (step S105), and ends the process.

Note that if the IP address of the upper server is NULL, the process ends without recording the server identification information in step S104. If the IP address of the lower server is NULL, the process ends without recording the server identification information in step S105.

In step S101, if the wireless communication unit 600 is installed (step S101: YES), the BMC 100 determines whether wireless communication with the host server is possible (step S106). If wireless communication with the host server is not possible (step S106: NO), the BMC 100 proceeds to step S108. If wireless communication is possible with the higher-level server (step S106: YES), the BMC 100 acquires the IP address of the higher-level server (step S107).

The BMC 100 determines whether wireless communication with the lower-level server is possible (step S108). If wireless communication with the lower server is not possible (step S108: NO), the BMC 100 proceeds to step S104. If wireless communication is possible with the lower server (step S108: YES), the BMC 100 acquires the IP address of the lower server (step S109), and proceeds to step S104.

FIG. 5 is a flowchart showing the flow of processing when the BMC 100 receives a temperature abnormality signal. When the BMC 100 receives the temperature abnormality signal, the BMC 100 determines whether the transmission destination of the temperature abnormality signal is an upper server (step S201). If the destination of the temperature abnormality signal is not the upper server (step S201: NO), the BMC 100 proceeds to step S203. If the destination of the temperature abnormality signal is the higher-level server (step S201: YES), the BMC 100 asserts the acquisition identification flag 153 of the server-related information 150 of the higher-level server (step S202).

The BMC 100 determines whether the destination of the temperature abnormality signal is a lower-level server (step S203). If the destination of the temperature abnormality signal is not the lower server (step S203: NO), the BMC 100 proceeds to step S205. If the destination of the temperature abnormality signal is the lower server (step S203: YES), the BMC 100 asserts the acquisition identification flag 153 of the server related information 150 of the lower server (step S204).

The BMC 100 determines whether the acquisition identification flag 153 of the higher-level server is asserted (step S205). If the acquisition identification flag 153 of the upper server is not asserted (step S205: NO), the BMC 100 proceeds to step S208. If the acquisition identification flag 153 of the higher-level server is asserted (step S205: YES), the BMC 100 accesses the BMC of the higher-level server and acquires temperature information (step S206). The BMC 100 records the acquired temperature information (date and time of acquisition, date and time of detection, temperature) in the temperature table of the server-related information 150 of the host server (step S207).

The BMC 100 determines whether the acquisition identification flag 153 of the lower server is asserted (step S208). If the lower server acquisition identification flag 153 is not asserted (step S208: NO), the BMC 100 proceeds to step S211. If the acquisition identification flag 153 of the upper server is asserted (step S208: YES), the BMC 100 accesses the BMC of the lower server and acquires temperature information (step S209). The BMC 100 records the acquired temperature information (date and time of acquisition, date and time of detection, temperature) in the temperature table of the server related information 150 of the lower server (step S210).

The BMC 100 determines whether a normal return signal has been received (step S211). If the normal return signal has not been received (step S211: NO), the BMC 100 returns to step S205. If the normal return signal is received (step S211: YES), the BMC 100 determines whether the destination of the normal return signal is an upper server (step S212). If the destination of the normal return signal is not the upper server (step S212: NO), the BMC 100 proceeds to step S214. If the destination of the normal return signal is the higher-level server (step S212: YES), the BMC 100 deasserts the acquisition identification flag 153 of the server-related information 150 of the higher-level server (step S213).

The BMC 100 determines whether the destination of the normal return signal is a lower server (step S214). If the destination of the normal return signal is not the lower server (step S214: NO), the BMC 100 proceeds to step S216. If the destination of the normal return signal is the lower server (step S214: YES), the BMC 100 deasserts the acquisition identification flag 153 of the server related information 150 of the lower server (step S215).

The BMC 100 determines whether any acquisition identification flag 153 is deasserted (step S216). That is, it is determined whether the upper server and lower server are also normal. If there is an acquisition identification flag 153 that has not been deasserted (step S216: NO), the BMC 100 proceeds to step S205. If any acquisition identification flag 153 is deasserted (step S216: NO), the BMC 100 ends the process.

As explained above, in an environment where multiple servers 300 are installed, by simply acquiring the server-related information 150 of one server, it is possible to obtain temperature information from adjacent servers (for example, a higher-level server) without acquiring temperature information from multiple servers. It is possible to check the temperature information of servers (low-level servers, etc.). Furthermore, from the temperature information, it is also possible to confirm that the device is operating in an almost abnormal state (for example, a temperature abnormality signal is transmitted intermittently). This can contribute to improving the work efficiency of maintenance personnel and SEs (System Engineers) of the server 300, and to improving the investigation efficiency of server engineers. For example, in related technology, the temperature of the own server is normal, but it is extremely difficult and time-consuming to identify the cause of the server's power fan speeding up due to heat generated by other servers. It was something. Even if the server is affected by such other servers, the present embodiment makes it possible to improve the efficiency of the investigation.

In the above-described embodiment, the upper server and the lower server are used as examples of targets for obtaining server-related information, but the present invention is not limited to this. For example, all servers provided in a rack, or furthermore, all servers provided in a machine room may be the targets for obtaining server-related information. Based on the server-related information obtained in this way, it may also cooperate with a management server that manages the server and an air conditioning system to manage the air conditioning of the machine room.

In the embodiment described above, temperature information of other servers is acquired, but in addition to temperature, other factors that are influenced by other servers include dust and electric power. Therefore, the BMC may acquire information acquired from the dustproof sensor or information acquired from the power sensor.

FIG. 6 is a diagram showing the minimum configuration of the management device according to this embodiment. The management device 1000 according to this embodiment may include an acquisition means 1001 and a recording means 1002.
The acquisition unit 1001 acquires temperature information of its own information processing device and an adjacent information processing device. Recording means 1002 records the temperature information acquired by acquisition means 1001.

The above-mentioned management device has a computer system inside. The above-described processing steps are stored in a computer-readable recording medium in the form of a program, and the above-mentioned processing is performed by reading and executing this program by the computer. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, and the like. Alternatively, this computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

Further, the program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in a transmission medium. Here, the "transmission medium" that transmits the program refers to a medium that has a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Moreover, the above program may be for realizing a part of the above-mentioned functions. Furthermore, it may be a so-called difference file (difference program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

101 Signal transmission/reception section 102 Acquisition section 103 Recording section 104 Temperature detection section 140 Device information storage section 150, 150-1, 150-n Server related information 151 Server identification information 152 Temperature table 153 Acquisition identification flag 200, 200-1, 200- k, 200-N Wired communication section 300, 300-1, 300-N, 300-N-1 Server 400 Communication line 500 Rack 600, 600-1, 600-N, 600-N-1 Wireless communication section 1000 Management device 1001 Acquisition means 1002 Recording means

Claims (3)

An acquisition means that acquires temperature information of an information processing device adjacent to the information processing device in which it is mounted, and when a signal indicating temperature abnormality is received from the adjacent information processing device, temperature information is acquired according to an asserted flag. an acquisition unit that starts acquiring the temperature information and, upon receiving a signal indicating that the temperature has returned to normal from an adjacent information processing device, finishes acquiring the temperature information in accordance with the deasserted flag;
recording means for recording temperature information acquired by the acquisition means;
A management device equipped with The purpose is to acquire temperature information of an information processing device adjacent to the information processing device on which it is installed, and when a signal indicating a temperature abnormality is received from the adjacent information processing device, temperature information is acquired according to an asserted flag. When the acquisition starts and a signal indicating that the temperature has returned to normal is received from the adjacent information processing device, the acquisition of temperature information is finished according to the deasserted flag,
Record the obtained temperature information,
Control method. The computer of the management device that manages the information processing device,
An acquisition means that acquires temperature information of an information processing device adjacent to the information processing device in which it is mounted, and when a signal indicating temperature abnormality is received from the adjacent information processing device, temperature information is acquired according to an asserted flag. an acquisition unit that starts acquiring the temperature information and, upon receiving a signal indicating that the temperature has returned to normal from an adjacent information processing device, finishes acquiring the temperature information in accordance with the deasserted flag;
recording means for recording temperature information acquired by the acquisition means;
A program that functions as

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