Abstract: Embodiments of the present invention provide systems and methods for thwarting attempts at the unauthorized access to the restricted resources within the target server in a multi-node system. Real-time detection of the user ID and thread ID associated with attempts to access the restricted resources within the target server in a multi-node system is achieved by analyzing causality, message queue, and event-driven patterns.

Abstract: A method for updating an application executing on a virtual machine includes replicating the virtual machine to produce a replica, applying an update to the replica that is scheduled to be made to the virtual machine, in parallel with the applying, updating one of the virtual machine and the replica so that a state of the virtual machine matches a state of the replica, and continuing execution of the application on one of the virtual machine and the replica.

Abstract: Evaluating the performance of an application when migrated from a first environment in which the application is currently executing to a different second environment includes generating a configuration file using data obtained from the application executing in the first environment, installing the configuration file in a virtual machine residing in the second environment, launching the application in the virtual machine after the installing, and obtaining a metric indicative of the performance from the virtual machine.

Abstract: Embodiments of the present invention provide systems and methods for thwarting attempts at the unauthorized access to the restricted resources within the target server in a multi-node system. Real-time detection of the user ID and thread ID associated with attempts to access the restricted resources within the target server in a multi-node system is achieved by analyzing causality, message queue, and event-driven patterns.

Abstract: Embodiments of the present invention provide systems and methods for thwarting attempts at the unauthorized access to the restricted resources within the target server in a multi-node system. Real-time detection of the user ID and thread ID associated with attempts to access the restricted resources within the target server in a multi-node system is achieved by analyzing causality, message queue, and event-driven patterns.

Abstract: In an approach for determining optimal performance-related configurations of applications by analyzing peer data, a processor monitors instances of an application, wherein the instances of the application are running on a plurality of devices. A processor receives data related to: configuration parameters of the application, system parameters of the plurality of devices, and performance metrics of the plurality of devices. A processor determines correlation and dependencies between the configuration parameters with associated system parameters, using: an all pair analysis and a Pearson product-moment correlation coefficient (PPMCC). A processor determines dependencies between the configuration parameters with performance metrics. A processor recommends to a user, configuration settings of the application, based on the analysis of the data.

Abstract: A method for updating an application executing on a virtual machine includes replicating the virtual machine to produce a replica, applying an update to the replica that is scheduled to be made to the virtual machine, in parallel with the applying, updating one of the virtual machine and the replica so that a state of the virtual machine matches a state of the replica, and continuing execution of the application on one of the virtual machine and the replica.

Abstract: A method for updating an application executing on a virtual machine includes replicating the virtual machine to produce a replica, applying an update to the replica that is scheduled to be made to the virtual machine, in parallel with the applying, updating one of the virtual machine and the replica so that a state of the virtual machine matches a state of the replica, and continuing execution of the application on one of the virtual machine and the replica.

Abstract: In an approach for determining optimal performance-related configurations of applications by analyzing peer data, a processor monitors instances of an application, wherein the instances of the application are running on a plurality of devices. A processor receives data related to: configuration parameters of the application, system parameters of the plurality of devices, and performance metrics of the plurality of devices. A processor determines correlation and dependencies between the configuration parameters with associated system parameters, using: an all pair analysis and a Pearson product-moment correlation coefficient (PPMCC). A processor determines dependencies between the configuration parameters with performance metrics. A processor recommends to a user, configuration settings of the application, based on the analysis of the data.

Abstract: Embodiments of the present invention provide systems and methods for thwarting attempts at the unauthorized access to the restricted resources within the target server in a multi-node system. Real-time detection of the user ID and thread ID associated with attempts to access the restricted resources within the target server in a multi-node system is achieved by analyzing causality, message queue, and event-driven patterns.

Abstract: A virtual storage module operable to run in a virtual machine monitor may include a wait-queue operable to store incoming block-level data requests from one or more virtual machines. In-memory metadata may store information associated with data stored in local persistent storage that is local to a host computer hosting the virtual machines. The data stored in local persistent storage replicates a subset of data in one or more virtual disks provided to the virtual machines. The virtual disks are mapped to remote storage accessible via a network connecting the virtual machines and the remote storage. A cache handling logic may be operable to handle the block-level data requests by obtaining the information in the in-memory metadata and making I/O requests to the local persistent storage or the remote storage or combination of the local persistent storage and the remote storage to service the block-level data requests.

Abstract: Evaluating the performance of an application when migrated from a first environment in which the application is currently executing to a different second environment includes generating a configuration file using data obtained from the application executing in the first environment, installing the configuration file in a virtual machine residing in the second environment, launching the application in the virtual machine after the installing, and obtaining a metric indicative of the performance from the virtual machine.

Abstract: A method for evaluating the performance of an application when migrated from a first environment in which the application is currently executing to a different second environment includes generating a configuration file using data obtained from the application executing in the first environment, installing the configuration file in a virtual machine residing in the second environment, launching the application in the virtual machine after the installing, and obtaining a metric indicative of the performance from the virtual machine.

Abstract: Evaluating the performance of an application when migrated from a first environment in which the application is currently executing to a different second environment includes generating a configuration file using data obtained from the application executing in the first environment, installing the configuration file in a virtual machine residing in the second environment, launching the application in the virtual machine after the installing, and obtaining a metric indicative of the performance from the virtual machine.

Abstract: A validation system is configured to automatically generate validators for one or more target systems. The validation system includes: a memory storing a computer process, a network interface configured to interface with the one or more target systems over a computer network, and a processor executing the computer process. The computer process is configured to parse the deployment code to identify components in deployment code, generate validator code for each identified component, and use the network interface to transmit the validator codes to the one or more target systems.

Abstract: A validation system is configured to automatically generate validators for one or more target systems. The validation system includes: a memory storing a computer process, a network interface configured to interface with the one or more target systems over a computer network, and a processor executing the computer process. The computer process is configured to parse the deployment code to identify components in deployment code, generate validator code for each identified component, and use the network interface to transmit the validator codes to the one or more target systems.

Abstract: Methods, systems, and articles of manufacture for injecting faults at select execution points of distributed applications are provided herein. A method includes monitoring a run-time state of each of multiple components of a distributed application to determine one or more sequence of events that triggers a fault injection point at one of the multiple components; defining a fault injection scenario in a specification based on said monitoring, wherein said fault injection scenario comprises a description of one or more sequence of events during which an intended fault is to be injected to a target component of the multiple components at one selected event; and executing the fault injection defined in the specification to perform injection of the intended fault during run-time of the distributed application.

Abstract: A virtual storage module operable to run in a virtual machine monitor may include a wait-queue operable to store incoming block-level data requests from one or more virtual machines. In-memory metadata may store information associated with data stored in local persistent storage that is local to a host computer hosting the virtual machines. The data stored in local persistent storage replicates a subset of data in one or more virtual disks provided to the virtual machines. The virtual disks are mapped to remote storage accessible via a network connecting the virtual machines and the remote storage. A cache handling logic may be operable to handle the block-level data requests by obtaining the information in the in-memory metadata and making I/O requests to the local persistent storage or the remote storage or combination of the local persistent storage and the remote storage to service the block-level data requests.

Abstract: A virtual storage module operable to run in a virtual machine monitor may include a wait-queue operable to store incoming block-level data requests from one or more virtual machines. In-memory metadata may store information associated with data stored in local persistent storage that is local to a host computer hosting the virtual machines. The data stored in local persistent storage replicates a subset of data in one or more virtual disks provided to the virtual machines. The virtual disks are mapped to remote storage accessible via a network connecting the virtual machines and the remote storage. A cache handling logic may be operable to handle the block-level data requests by obtaining the information in the in-memory metadata and making I/O requests to the local persistent storage or the remote storage or combination of the local persistent storage and the remote storage to service the block-level data requests.

Abstract: A method for updating an application executing on a virtual machine includes replicating the virtual machine to produce a replica, applying an update to the replica that is scheduled to be made to the virtual machine, in parallel with the applying, updating one of the virtual machine and the replica so that a state of the virtual machine matches a state of the replica, and continuing execution of the application on one of the virtual machine and the replica.