This chart provide a buffer for cluster autoscaling to allow overprovisioning of cluster nodes. This is desired when you have work loads that need to scale up quickly without waiting for the new cluster nodes to be created and join the cluster.
It works by creating a deployment that creates pods of a lower than default PriorityClass. These pods request resources from the cluster but don't actually consume any resources. These pods are then evicted allowing other normal pods to be created while also triggering a scale-up by the cluster-autoscaler.
This approach is the current recommended method to achieve overprovisioning.
Homepage: https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler
A simple install with default values, latest chart version and generated name:
helm install --generate-name oci://ghcr.io/deliveryhero/helm-charts/cluster-overprovisionerTo install a specific version of this chart:
helm install --generate-name oci://ghcr.io/deliveryhero/helm-charts/cluster-overprovisioner --version 0.7.12To install the chart with the release name my-release:
helm install my-release oci://ghcr.io/deliveryhero/helm-charts/cluster-overprovisionerTo install with some set values:
helm install my-release oci://ghcr.io/deliveryhero/helm-charts/cluster-overprovisioner --set values_key1=value1 --set values_key2=value2To install with custom values file:
helm install my-release oci://ghcr.io/deliveryhero/helm-charts/cluster-overprovisioner -f values.yaml- https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/FAQ.md#how-can-i-configure-overprovisioning-with-cluster-autoscaler
- https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler
- https://github.com/kubernetes/kubernetes/tree/master/build/pause
| Key | Type | Default | Description |
|---|---|---|---|
| containerSecurityContext | object | {} |
Container security context object |
| deployments | list | [] | Define optional additional deployments - A default deployment is included by default |
| deployments[0].affinity | object | {} |
Default Deployment - Map of node/pod affinities |
| deployments[0].annotations | object | {} |
Default Deployment - Annotations to add to the deployment |
| deployments[0].labels | object | {} |
Default Deployment - Optional labels tolerations |
| deployments[0].name | string | "default" |
Default Deployment - Name for additional deployments (will be added as label cluster-over-provisioner-name, so you can match it with affinity rules) |
| deployments[0].nodeSelector | object | {} |
Default Deployment - Node labels for pod assignment |
| deployments[0].pdb | object | {} |
Default Deployment - Optional PodDisruptionBudget |
| deployments[0].podAnnotations | object | {} |
Default Deployment - Annotations to add to the pods |
| deployments[0].replicaCount | int | 3 |
Default Deployment - Number of replicas |
| deployments[0].resources.limits.cpu | string | "1000m" |
Default Deployment - CPU limit for the overprovision pods |
| deployments[0].resources.limits.memory | string | "1000Mi" |
Default Deployment - Memory limit for the overprovision pods |
| deployments[0].resources.requests.cpu | string | "1000m" |
Default Deployment - CPU requested for the overprovision pods |
| deployments[0].resources.requests.memory | string | "1000Mi" |
Default Deployment - Memory requested for the overprovision pods |
| deployments[0].schedulerName | string | "" |
Default Deployment - Override the scheduler for overprovision pods |
| deployments[0].tolerations | list | [] |
Default Deployment - Optional deployment tolerations |
| deployments[0].topologySpreadConstraints | list | [] |
Default Deployment - Optional topology spread constraints |
| fullnameOverride | string | "" |
Override the fullname of the chart |
| image.args | list | [] |
Override container args |
| image.command | list | [] |
Override container command |
| image.pullPolicy | string | "IfNotPresent" |
Container pull policy |
| image.repository | string | "registry.k8s.io/pause" |
Image repository |
| image.tag | string | .Chart.AppVersion |
Image tag |
| nameOverride | string | "" |
Override the name of the chart |
| podSecurityContext | object | {} |
Pod security context object |
| priorityClassDefault.enabled | bool | true |
If true, enable default priorityClass |
| priorityClassDefault.name | string | "default" |
Name of the default priorityClass |
| priorityClassDefault.value | int | 0 |
Priority value of the default priorityClass |
| priorityClassOverprovision.name | string | "overprovisioning" |
Name of the overprovision priorityClass |
| priorityClassOverprovision.value | int | -1 |
Priority value of the overprovision priorityClass |
| serviceAccount.annotations | object | {} |
Additional Service Account annotations |
| serviceAccount.automountServiceAccountToken | bool | true |
Automount API credentials for a Service Account |
| serviceAccount.create | bool | true |
Determine whether a Service Account should be created or it should reuse an exiting one |
| serviceAccount.name | string | nil |
The name of the ServiceAccount to use. If not set and create is true, a name is generated using the fullname template |
| terminationGracePeriodSeconds | int | 0 |
Time for graceful pod termination |
| Name | Url | |
|---|---|---|
| max-rocket-internet | [email protected] | |
| mmingorance-dh | [email protected] |