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0107bc7942
* Make FS space alerts thresholds configurable (#1) This makes it possible to tweak the thresholds for the NodeFilesystemSpaceFillingUp alerts. Which might be necessary in systems like Kubernetes, where the image garbage collector runs at 85%, so it's not a problem that the disk reaches that usage %. Signed-off-by: iuri aranda <iuri@skyscrapers.eu>
53 lines
2.5 KiB
Plaintext
53 lines
2.5 KiB
Plaintext
{
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_config+:: {
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// Selectors are inserted between {} in Prometheus queries.
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// Select the metrics coming from the node exporter. Note that all
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// the selected metrics are shown stacked on top of each other in
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// the 'USE Method / Cluster' dashboard. Consider disabling that
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// dashboard if mixing up all those metrics in the same dashboard
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// doesn't make sense (e.g. because they are coming from different
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// clusters).
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nodeExporterSelector: 'job="node"',
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// Select the fstype for filesystem-related queries. If left
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// empty, all filesystems are selected. If you have unusual
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// filesystem you don't want to include in dashboards and
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// alerting, you can exclude them here, e.g. 'fstype!="tmpfs"'.
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fsSelector: 'fstype!=""',
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// Select the device for disk-related queries. If left empty, all
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// devices are selected. If you have unusual devices you don't
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// want to include in dashboards and alerting, you can exclude
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// them here, e.g. 'device!="tmpfs"'.
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diskDeviceSelector: 'device!=""',
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// Some of the alerts are meant to fire if a critical failure of a
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// node is imminent (e.g. the disk is about to run full). In a
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// true “cloud native” setup, failures of a single node should be
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// tolerated. Hence, even imminent failure of a single node is no
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// reason to create a paging alert. However, in practice there are
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// still many situations where operators like to get paged in time
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// before a node runs out of disk space. nodeCriticalSeverity can
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// be set to the desired severity for this kind of alerts. This
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// can even be templated to depend on labels of the node, e.g. you
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// could make this critical for traditional database masters but
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// just a warning for K8s nodes.
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nodeCriticalSeverity: 'critical',
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// Available disk space (%) thresholds on which to trigger the
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// 'NodeFilesystemSpaceFillingUp' alerts. These alerts fire if the disk
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// usage grows in a way that it is predicted to run out in 4h or 1d
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// and if the provided thresholds have been reached right now.
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// In some cases you'll want to adjust these, e.g. by default Kubernetes
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// runs the image garbage collection when the disk usage reaches 85%
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// of its available space. In that case, you'll want to reduce the
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// critical threshold below to something like 14 or 15, otherwise
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// the alert could fire under normal node usage.
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fsSpaceFillingUpWarningThreshold: 40,
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fsSpaceFillingUpCriticalThreshold: 20,
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grafana_prefix: '',
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},
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}
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