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| -rw-r--r-- | health/REFERENCE.md | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/health/REFERENCE.md b/health/REFERENCE.md index b95dc852..a36edd8c 100644 --- a/health/REFERENCE.md +++ b/health/REFERENCE.md @@ -241,7 +241,8 @@ Netdata parses the following lines. Beneath the table is an in-depth explanation | [`delay`](#alarm-line-delay) | no | Optional hysteresis settings to prevent floods of notifications. | | [`repeat`](#alarm-line-repeat) | no | The interval for sending notifications when an alarm is in WARNING or CRITICAL mode. | | [`options`](#alarm-line-options) | no | Add an option to not clear alarms. | -| [`host labels`](#alarm-line-host-labels) | no | List of labels present on a host. | +| [`host labels`](#alarm-line-host-labels) | no | Restrict an alarm or template to a list of matching labels present on a host. | +| [`chart labels`](#alarm-line-chart-labels) | no | Restrict an alarm or template to a list of matching labels present on a host. | | [`info`](#alarm-line-info) | no | A brief description of the alarm. | The `alarm` or `template` line must be the first line of any entity. @@ -446,6 +447,9 @@ For example, you can create a template on the `disk.io` context, but filter it t families: sda sdb ``` +Please note that the use of the `families` filter is planned to be deprecated in upcoming Netdata releases. +Please use [`chart labels`](#alarm-line-chart-labels) instead. + #### Alarm line `lookup` This line makes a database lookup to find a value. This result of this lookup is available as `$this`. @@ -696,6 +700,35 @@ host labels: installed = 201* See our [simple patterns docs](https://github.com/netdata/netdata/blob/master/libnetdata/simple_pattern/README.md) for more examples. +#### Alarm line `chart labels` + +Similar to host labels, the `chart labels` key can be used to filter if an alarm will load or not for a specific chart, based on +whether these chart labels match or not. + +The list of chart labels present on each chart can be obtained from http://localhost:19999/api/v1/charts?all + +For example, each `disk_space` chart defines a chart label called `mount_point` with each instance of this chart having +a value there of which mount point it monitors. + +If you have an e.g. external disk mounted on `/mnt/disk1` and you don't wish any related disk space alerts running for +it (but you do for all other mount points), you can add the following to the alert's configuration: + +```yaml +chart labels: mount_point=!/mnt/disk1 *` +``` + +The `chart labels` is a space-separated list that accepts simple patterns. If you use multiple different chart labels, +then the result is an OR between them. i.e. the following: + +```yaml +chart labels: mount_point=/mnt/disk1 device=sda` +``` + +Will create the alert if the `mount_point` is `/mnt/disk1` or the `device` is `sda`. Furthermore, if a chart label name +is specified that does not exist in the chart, the chart won't be matched. + +See our [simple patterns docs](https://github.com/netdata/netdata/blob/master/libnetdata/simple_pattern/README.md) for more examples. + #### Alarm line `info` The info field can contain a small piece of text describing the alarm or template. This will be rendered in |