Abstract: Methods and systems to narrow a search for potential sources of problems in a distributed computing system are described. A volatile event type of event messages recorded in an event-log file is identified. The volatile event type is an event type that may have unexpectedly increased in frequency over an observation time window. An historical period of time may be selected to search for potential sources of the volatile event type. Frequencies of event messages in the event-log file with the same event type as the volatile event type are determined for time intervals of the historical period of time. A time interval of the historical period of time with a largest increase in frequency of event messages is identified. A list of event messages of the event-log file in a selected sub-time interval of the sub-time intervals of the time interval are displayed in a graphical user interface.

Abstract: The current document is directed to an automated upgrade subsystem within a distributed computer system that executes a distributed, service-based application comprising multiple local instances of the a distributed, service-based application, each instance including one or more control programs executing on a physical computer-system component of the distributed computer system. In one implementation, the automated upgrade subsystem provides a user interface that allows a system administrator or other user to launch a distributed-system-wide upgrade of a distributed application with a single input to a single input feature on a displayed user interface.

Abstract: Methods and systems to narrow a search for potential sources of problems in a distributed computing system are described. A volatile event type of event messages recorded in an event-log file is identified. The volatile event type is an event type that may have unexpectedly increased in frequency over an observation time window. An historical period of time may be selected to search for potential sources of the volatile event type. Frequencies of event messages in the event-log file with the same event type as the volatile event type are determined for time intervals of the historical period of time. A time interval of the historical period of time with a largest increase in frequency of event messages is identified. A list of event messages of the event-log file in a selected sub-time interval of the sub-time intervals of the time interval are displayed in a graphical user interface.

Abstract: The current document is directed to an automated upgrade subsystem within a distributed computer system that executes a distributed, service-based application comprising multiple local instances of the a distributed, service-based application, each instance including one or more control programs executing on a physical computer-system component of the distributed computer system. In one implementation, the automated upgrade subsystem provides a user interface that allows a system administrator or other user to launch a distributed-system-wide upgrade of a distributed application with a single input to a single input feature on a displayed user interface.

Abstract: The present disclosure is related to systems, methods, and non-transitory machine readable media for alerting with duplicate suppression. An example non-transitory machine readable medium can store instructions executable by a processing resource to cause a computing system to receive an alert at a first virtual computing instance (VCI) from a second VCI, compare the alert with at least one previously received alert to determine if the alert is a duplicate alert, and send the alert to an alert notification queue associated with the first VCI in response to a determination that the alert is not a duplicate alert. In some embodiments, the medium can store instructions to confirm that the alert has been sent in response to the determination that the alert is a duplicate alert.

Abstract: The present disclosure is related to systems, methods, and non-transitory machine readable media for alerting with duplicate suppression. An example non-transitory machine readable medium can store instructions executable by a processing resource to cause a computing system to receive an alert at a first virtual computing instance (VCI) from a second VCI, compare the alert with at least one previously received alert to determine if the alert is a duplicate alert, and send the alert to an alert notification queue associated with the first VCI in response to a determination that the alert is not a duplicate alert. In some embodiments, the medium can store instructions to confirm that the alert has been sent in response to the determination that the alert is a duplicate alert.