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Glossary

anchor entity

The primary subject of a Smart View, shown in the anchor card.

See also: entity

anchor card

The primary area of a Smart View, on the left side of the window.

The anchor card displays graphs of the most important metrics of the anchor entity over a period of time.

collector

A logical group of Collection Zone services that gather availability, performance, or model data about devices.

Collectors use generic protocols (ICMP, SNMP) or customized protocols (API calls) to gather data.

data point

The value of a metric at a specific time.

data source

A query that uses a specific protocol to request one or more metrics from a device or application.

For example, to gather system uptime from a Linux host, an SNMP data source requests a specific OID, and an SSH data source runs the uptime command.

device

A physical or virtual system, or a virtual or cloud infrastructure, from which a Collection Zone gathers availability, performance, and model data.

Example systems include servers, routers, storage systems, and switches. Example infrastructures include Amazon Web Services, VMware vCloud, and Microsoft Azure.

See also: entity, device component

device class

The base set of properties that characterize a group of devices. A device may belong to only one device class.

Device class properties identify the data to collect and the protocol for collecting data.

device component

Resources that belong to a specific device, or processes that run on a specific device.

For example, file systems, applications, and network interfaces are device components.

See also: entity

discovery

The process of identifying device components.

The results of discovery are used to populate the model.

entity

A system, process, or feature for which Zenoss Cloud gathers or is sent data points.

See also: device, device component

Synonym: managed resource

event

A message that is sent to the event processing service.

External events are solicited (for example, through ZenPacks) or unsolicited (through SNMP traps or syslog). Internal events are created in response to failed pings, threshold violations, and other occurrences.

event class

A named set of properties that define a category of events, and a set of event rules.

event rule

A Python expression that the event processing service uses to determine whether to change the class of an event.

For more information, see Event class mappings.

graph

A diagram of the relationships among data points, thresholds, or both, over a specific period of time.

key metric

A metric that is analyzed with anomaly detection algorithms.

metric

A measurement that quantifies an entity property or phenomenon.

Example metrics include input/output operations per second (IOPS), CPU utilization, network interface throughput, and the amount of free space on a block device.

See also: data point

model

A schematic description of a device and its components.

monitoring template

A named object that associates data sources, thresholds, and graph definitions with a device or device component. For devices, a monitoring template also includes a device class.

Monitoring templates define what and how to monitor, and how to present data points

notification

A named object that associates one or more triggers with an action.

Example actions include sending email to a list of recipients and running a command.

organizer

An implicit or explicit way to group devices.

Device classes are implicit organizers. Explicit organizers enable arbitrary groupings of devices and device components in the Collection Zone interface.

For more information, see Using organizers.

Smart View

Smart View is a visual representation of the most relevant available information about an entity, the entities that it depends on, and critical events that affect the entities.

For more information, see Using Smart View.

streaming data

Data that does not necessarily have a model associated with it before it comes into Zenoss Cloud.

Zenoss Cloud normalizes streaming data, builds models from inferences about the data, and records data points.

See also: collector

NOTE: The streaming data collection feature of Zenoss Cloud is not available in the current release.

threshold

A named object that specifies the boundary criteria for the data points of a metric.

Collection Zone services consider thresholds when data points are received and create events when a data point violates one or more criteria.

trigger

A named set of rules (Boolean expressions) that the event processing service uses to examine events.

See also: notification