Data model
Yandex Monitoring stores data as time series.
Metrics
Metrics are time series that shows a change of some value over time. For example, the resource status of a Yandex.Cloud service: the amount of used disk space, network data transfer rate, and so on.
Metrics are identified using text labels.
Labels
A label is a metric characteristic in key: "value" format. Each metric is identified by an unordered set of labels. Use a parameter that takes a limited set of values as a label. For example, the HTTP status code, the types of procedures being performed in a database, and so on.
The service has mandatory and optional labels. Mandatory labels:
project: The ID of the cloud that the resource belongs to.cluster: The ID of the folder that the resource belongs to.service: Indicates the Yandex.Cloud service that the resource belongs to. For example,computeormanaged-postgresql.
Warning
When uploading custom metrics, you should write the custom value in the service label.
Metric types
The Yandex Monitoring service offers the following metric types:
| Type | Description |
|---|---|
DGAUGE |
Numeric value (decimal). It shows the metric value at a certain point in time. For example, the amount of used RAM |
IGAUGE |
Numeric value (integer). It shows the metric value at a certain point in time. |
COUNTER |
Tag. It shows the metric value that increases over time. For example, the number of days of service continuous running. |
RATE |
Derivative value. It shows the change in the metric value over time. For example, the number of requests per second. |
Requests
Yandex Monitoring allows you to create queries to select a set of metrics and display them on a chart. You can also use templates as label values.
The following templates are available in Yandex Monitoring:
| Syntax | Description |
|---|---|
label="*" |
Outputs all metrics with the specified label. For example, the host="*" query displays all metrics with host label. |
label="glob" |
Displays all metrics whose label satisfy glob expression:* — Any number of characters (including none). For example, name="folder*" displays all metrics that have the name label and whose value begins with the folder prefix.? — One arbitrary character. For example, name="metric?" displays all labels that have one character after metric| — All specified options. For example, name="metric1|metric2" displays two metrics with label values metric1 and metric2. |