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Add docs for cpuCFSQuota / cpuCFSQuotaPeriod #7074

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May 29, 2019
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Add docs for cpuCFSQuota / cpuCFSQuotaPeriod #7074

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19 changes: 19 additions & 0 deletions docs/cluster_spec.md
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Expand Up @@ -345,6 +345,25 @@ NOTE: Where the corresponding configuration value can be empty, fields can be se

Will result in the flag `--resolv-conf=` being built.

#### Disable CPU CFS Quota
To disable CPU CFS quota enforcement for containers that specify CPU limits (default true) we have to set the flag `--cpu-cfs-quota` to `false`
on all the kubelets. We can specify that in the `kubelet` spec in our cluster.yml.

```
spec:
kubelet:
cpuCFSQuota: false
```

#### Configure CPU CFS Period
Configure CPU CFS quota period value (cpu.cfs_period_us). Example:

```
spec:
kubelet:
cpuCFSQuotaPeriod: "100ms"
```

#### Enable Custom metrics support
To use custom metrics in kubernetes as per [custom metrics doc](https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/#support-for-custom-metrics)
we have to set the flag `--enable-custom-metrics` to `true` on all the kubelets. We can specify that in the `kubelet` spec in our cluster.yml.
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