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Make FS space alerts thresholds configurable (#1624)

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* 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>
This commit is contained in:
iuri aranda 2020-03-02 16:24:51 +01:00 • committed by GitHub
commit 0107bc7942
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2 changed files with 14 additions and 2 deletions
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4
docs/node-mixin/alerts/alerts.libsonnet
View file

@ -8,7 +8,7 @@
alert: 'NodeFilesystemSpaceFillingUp',
expr: |||
(
node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < 40
node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < %(fsSpaceFillingUpWarningThreshold)d
and
predict_linear(node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s}[6h], 24*60*60) < 0
and
@ -28,7 +28,7 @@
alert: 'NodeFilesystemSpaceFillingUp',
expr: |||
(
node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < 20
node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < %(fsSpaceFillingUpCriticalThreshold)d
and
predict_linear(node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s}[6h], 4*60*60) < 0
and