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Cherry-pick pull request #450 from RiRa12621/master #466

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merged 1 commit into from
Jul 15, 2020
Merged

Cherry-pick pull request #450 from RiRa12621/master #466

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10 changes: 10 additions & 0 deletions README.md
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Expand Up @@ -194,6 +194,16 @@ $ jsonnet -J vendor -m files/dashboards -e '(import "mixin.libsonnet").grafanaDa

## Background

### Alert Severities
While the community has not yet fully agreed on alert severities and their to be used, this repository assumes the following paradigms when setting the severities:

* Critical: An issue, that needs to page a person to take instant action
* Warning: An issue, that needs to be worked on but in the regular work queue or for during office hours rather than paging the oncall
* Info: Is meant to support a trouble shooting process by informing about a non-normal situation for one or more systems but not worth a page or ticket on its own.


### Architecture and Technical Decisions

* For more motivation, see
"[The RED Method: How to instrument your services](https://kccncna17.sched.com/event/CU8K/the-red-method-how-to-instrument-your-services-b-tom-wilkie-kausal?iframe=no&w=100%&sidebar=yes&bg=no)" talk from CloudNativeCon Austin.
* For more information about monitoring mixins, see this [design doc](https://docs.google.com/document/d/1A9xvzwqnFVSOZ5fD3blKODXfsat5fg6ZhnKu9LK3lB4/edit#).
6 changes: 3 additions & 3 deletions alerts/resource_alerts.libsonnet
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Expand Up @@ -87,16 +87,16 @@
'for': '5m',
},
{
alert: 'KubeQuotaExceeded',
alert: 'KubeQuotaFullyUsed',
expr: |||
kube_resourcequota{%(prefixedNamespaceSelector)s%(kubeStateMetricsSelector)s, type="used"}
/ ignoring(instance, job, type)
(kube_resourcequota{%(prefixedNamespaceSelector)s%(kubeStateMetricsSelector)s, type="hard"} > 0)
> 0.90
>= 1
||| % $._config,
'for': '15m',
labels: {
severity: 'warning',
severity: 'info',
},
annotations: {
message: 'Namespace {{ $labels.namespace }} is using {{ $value | humanizePercentage }} of its {{ $labels.resource }} quota.',
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4 changes: 2 additions & 2 deletions runbook.md
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Expand Up @@ -85,9 +85,9 @@ This page collects this repositories alerts and begins the process of describing
##### Alert Name: "KubeMemOvercommit"
+ *Message*: `Overcommited Memory resource request quota on Namespaces.`
+ *Severity*: warning
##### Alert Name: "KubeQuotaExceeded"
##### Alert Name: "KubeQuotaFullyUsed"
+ *Message*: `{{ $value | humanizePercentage }} usage of {{ $labels.resource }} in namespace {{ $labels.namespace }}.`
+ *Severity*: warning
+ *Severity*: info
### Group Name: "kubernetes-storage"
##### Alert Name: "KubePersistentVolumeUsageCritical"
+ *Message*: `The persistent volume claimed by {{ $labels.persistentvolumeclaim }} in namespace {{ $labels.namespace }} has {{ $value | humanizePercentage }} free.`
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