Fujitsu Corporation

Yukihiro Watanabe

Yasuhide Matsumoto

Masazumi Matsubara

Hiroshi Otsuka

Kuniaki Shimada

Yuji Wada

Kenji Morimoto

Reiko Kondo

Akira Katsuno

Masahiro Asaoka

Ken Yokoyama

Fumi Iikura

Atsuji Sekiguchi

Tetsuya Uchiumi

Yuji Saito

Shingo Okuno

Keiichi Oguro

Kazuhiro Suzuki

Shinji Kikuchi

Masataka Sonoda

Shinya Kitajima

Toshihiro Kodaka

Tatsuo Kumano

Hiroyuki Yamashima

Tetsuya Okano

Motomitsu Adachi

Fumi Likura

A non-transitory computer-readable storage medium storing a program that causes a computer to execute a process. The process acquires topology information that indicates a calling relationship between containers that operate in a first information processing device. The process also identifies a second container that is one of calls of a first container that calls two or more containers, and a third container that does not call another container based on the topology information. Next, the process moves, to a second information processing device, a container group that is connected by the calling relationship from the second container to the third container.

Storage medium and container moving method

A usage prediction method executed by a computer, the usage prediction method includes classifying a plurality of records corresponding to a plurality of times included in first time-series data indicating a history of usages of a resource into a plurality of groups respectively corresponding to attributes of the plurality of times; generating second time-series data for each attribute by combining the records belonging to the group corresponding to the same attribute for the plurality of classified groups in order of the times; generating, for each attribute, an expression for calculating a predicted value to be used for calculating a predicted value of the usage based on the generated second time-series data; and calculating the predicted value of the usage based on the expression for calculating the predicted value for each attribute.

Usage prediction method and storage medium

Time-series data indicating a temporal variation of an index, which indicates a usage state of each of resources that are used by multiple processes, is acquired, and an operation-data matrix including vectors is generated based on the time-series data such that each of the vectors indicates the time-series data at a predetermined time interval and includes as an element the index indicating the usage state of one of the resources at the predetermined time interval. A basis matrix including a predetermined number of basis vectors is generated by performing nonnegative matrix factorization on the operation-data matrix. Component values, which respectively correspond to the resources, indicated by each of the predetermined number of the basis vectors are extracted, and information on the extracted component values is output as usage states of the resources that are used by each of the multiple processes.

Analysis of time-series data indicating temporal variation in usage states of resources used by multiple processes

A network configuration diagram generate method executed by a computer, the method includes identifying, in a predetermined system in which a plurality of virtual machines are used, a location where each of the plurality of virtual machines is located and a communication destination with which each of the plurality of virtual machines communicates; determining, for each change in a configuration of the predetermined system, a relationship of a communication distance between the plurality of virtual machines by using the location and the communication destination, the configuration indicating a relationship of the plurality of virtual machines; extracting a difference between the relationship of the communication distance before the configuration change and the relationship of the communication distance after the configuration change; and generating a network configuration diagram in which the extracted difference is indicated.

Network configuration diagram generate method and recording medium

An analysis method includes: executing first accumulation processing for accumulating analysis reports including an analysis item regarding an analysis target and analysis results with respect to the analysis item; executing first extraction processing for extracting the analysis item and texts representing the analysis results from each of the analysis reports accumulated; executing first identification processing for identifying analysis techniques corresponding to the texts extracted; executing generation processing for generating analysis patterns; executing second identification processing for identifying first analysis patterns; executing third identification processing for identifying other analysis patterns; executing second accumulation processing for accumulating pattern information; executing second extraction processing for extracting the analysis item and the texts from a new analysis report; and executing output processing for identifying an analysis technique.

Analysis method, analysis apparatus, and non-transitory computer-readable storage medium for storing program

A method performed by an apparatus is provided. The apparatus extracts a virtual machine before starting operation from among virtual machines within a range of influence of a failure upon detection of the failure. With reference to a storage unit storing history information concerning operation of a virtual machine, the apparatus generates first information corresponding to time intervals of operation start time of the extracted virtual machine, second information corresponding to movement required time required to move the extracted virtual machine out of the range of influence of the failure, and third information corresponding to recovery required time required for recovery of the failure detected to have occurred. The apparatus determines whether to move the extracted virtual machine out of the range of influence of the failure, based on the generated first, second, and third information.

Effective selection of a virtual machine to be moved outside influence range of a failure

An apparatus, for an existing schedule indicating time slots during which virtual-machines are to be migrated between physical-machines, acquires change information indicating a change of first time slots during which first virtual-machines are to be migrated, and generates constraint information including a group of constraints regarding the change information and second time slots during which second virtual-machines other than the first virtual-machines are to be migrated. The apparatus generates semi-constraint information items each generated by excluding, from the constraint information, an exclusion target constraint that is selected in turn from among the group of constraints, and generates, for each semi-constraint information item, a rescheduling result by rescheduling migrations of the virtual-machines. The apparatus outputs a first rescheduling result that is one of the generated rescheduling results which reduces a difference between a scheduled migration time indicated by the first rescheduling result and scheduled migration times of the second virtual-machines.

Rescheduling of virtual machine migrations with less impact on an existing migration schedule

A non-transitory computer-readable recording medium has stored therein a program that causes a computer to execute a process including creating a frequent message group based on an appearance frequency of each message included in a message group that is generated in the past, in response to a generation of an error message; extracting, as an error periphery log, a message group within a predetermined time period before and after the error message from an accumulated message group; determining whether or not the error message is included in the frequent message group based on a degree of relation between the error periphery log and the frequent message group; and outputting a message that is not included in the frequent message group in the error periphery log as a related message associated with the error message based on a result of the determining.

Output method and information processing apparatus

An apparatus obtains, from a first device, an identifier of a higher-order service for which occurrence of an abnormality or a possibility of being affected by an abnormality has been detected, where the first device searches for a range of effects of failure within a higher-order service layer that provides a higher-order service using a service provided in an object-service layer within a cloud service providing a layered structure of services. The apparatus determines a service within the object-service layer, which is reachable by tracing relations among services from the detected higher-order service, to be an in-effect-range service for which there is a possibility of being affected by an abnormality, and transmits the identifier of the in-effect-range service to a second device that searches for a range of effects of failure at a lower-order service layer that provides a lower-order service used to provide a service within the object-service layer.

Apparatus and method to improve precision of identifying a range of effects of a failure in a system providing a multilayer structure of services

The scheduling device divides the execution duration into a plurality of unit periods. The scheduling device then allocates each of the plurality of physical machines to a physical machine group that may execute, while satisfying the constraint conditions, migration of the virtual machine operating on the allocated physical machine and maintenance work on the allocated physical machine within one or more unit periods of the plurality of unit periods. Thereafter, for each of the plurality of physical machine groups, the scheduling device creates individual schedule information indicating a work execution duration of migration of the virtual machine operating on the allocated physical machine and that of maintenance work on the allocated physical machine within one or more unit periods of the plurality of unit periods, and outputs overall schedule information obtained by integrating the individual schedule information on each of the plurality of physical machine groups.

Scheduling method and scheduling device

An apparatus includes a memory configured to store configuration information related to a physical machine and a virtual machine that operates on the physical machine, and temporal information indicating a time turnaround for migration of the virtual machine from the physical machine to another physical machine. Upon acquisition of data indicating a duration of a maintenance execution related to a physical machine, the apparatus produces, based on the configuration information and the temporal information stored in the memory, a constraint condition for the virtual machine that operates on the physical machine, where the constraint condition is used to determine a schedule of the migration. The apparatus produces schedule information of the migration, based on the constraint condition and the duration of the maintenance execution, and outputs the schedule information to a device used by a user of the virtual machine.

Non-transitory computer-readable recording medium, adjustment device, and adjustment method

A migration control apparatus includes a processor configured to, acquire a first communication log regarding a first virtual machine when execution of migration of the first virtual machine is not completed in a specific time, perform calculation of a first response time of a first processing request to the first virtual machine, acquire a second communication log regarding the first virtual machine after lowering frequency of assignment of a computing resource to the first virtual machine to a first rate, perform calculation of a second response time of a second processing request to the first virtual machine, calculate a second rate to which the frequency of assignment of the computing resource is permitted to be lowered, after starting re-execution of the migration, perform calculation of a third rate of the frequency of assignment of the computing resource for completing the re-execution, and perform determination of whether to cease the re-execution.

Migration control apparatus and migration control method

A non-transitory computer-readable storage medium storing a program that causes a computer to execute a process, the process includes determining an information transmission path between two devices with a correlation in use status of resources based on system configuration information and use resource information; generating, for each of a plurality of software, an influence propagation model in which a direction from a first device to a second device is set as an influence propagation direction, when a co-occurrence probability that the second device outputs a message within a certain time after the first device outputs a message through execution of the software is equal to or greater than a threshold, based on a message log; acquiring failure information indicating a failed device; specifying an influenced device reached by tracing the information transmission path from the failed device in an influence propagation direction; and outputting information indicating the influenced device.

Influence range specifying method, influence range specifying apparatus, and storage medium

An apparatus extracts, for each virtual machine, a first time at which a first live migration has been performed and a first time-interval that has been taken for the first live migration, from log information storing events of the first live migration. The apparatus extracts, for each virtual machine, load information from a load history in which the load information including a CPU usage rate and a memory usage amount is stored at predetermined intervals for each virtual machine, and generates a model that predicts a second time-interval to be taken for a second live migration expected to be performed for each virtual machine, from the load information at the first time and the first time-interval. Upon receiving an instruction for predicting the second time-interval, the apparatus predicts the second time-interval from the model, and provides the predicted second time-interval to be taken for the second live migration.

Apparatus and method to predict a time interval taken for a live migration of a virtual machine

An influence range identification apparatus includes a processor configured to acquire information indicating a first device in which a failure occurs. The processor searches for second devices starting from the first device based on a connection relationship among a plurality of devices. The second devices exist in a first influence range. The processor determines whether a third device exists among the second devices. The third device has abnormality due to the failure. The processor determines whether each of the second devices other than the third device exits in a second influence range starting from the third device based on the connection relationship among the second devices. The processor determines a rank of a degree of a possibility of being affected by the failure with respect to each of the second devices other than the third device.

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Kawasaki, Japan

Yukihiro Watanabe