stable/k8s-spot-termination-handler
⚠️ Repo Archive Notice
As of Nov 13, 2020, charts in this repo will no longer be updated. For more information, see the Helm Charts Deprecation and Archive Notice, and Update.
Kubernetes AWS EC2 Spot Termination Notice Handler
This chart installs the k8s-spot-termination-handler as a daemonset across the cluster nodes.
DEPRECATION NOTICE
This chart is deprecated and no longer supported.
Purpose
Spot instances on EC2 come with significant cost savings, but with the burden of instance being terminated if the market price goes higher than the maximum price you have configured.
The termination handler watches the AWS Metadata API for termination requests and starts draining the node so that it can be terminated safely. Optionally it can also send a message to a Slack channel informing that a termination notice has been received.
Installation
You should install into the kube-system namespace, but this is not a requirement. The following example assumes this has been chosen.
helm install stable/k8s-spot-termination-handler --namespace kube-system
Configuration
The following table lists the configurable parameters of the k8s-spot-termination-handler chart and their default values.
| Parameter | Description | Default |
|---|---|---|
image.repository |
container image repository | kubeaws/kube-spot-termination-notice-handler |
image.tag |
container image tag | 1.13.7-1 |
image.pullPolicy |
container image pull policy | IfNotPresent |
imagePullSecrets |
array of imagePullSecrets containing private registry credentials | [] |
noticeUrl |
the URL of EC2 spot instance termination notice endpoint | http://169.254.169.254/latest/meta-data/spot/termination-time |
pollInterval |
the interval in seconds between attempts to poll EC2 metadata API for termination events | "5" |
verbose |
Enable verbose | not defined |
slackUrl |
Slack webhook URL to send messages when a termination notice is received | not defined |
clusterName |
if slackUrl is set - use this cluster name in Slack messages |
not defined |
enableLogspout |
if true, enable the Logspout log capturing. Logspout should be deployed separately |
false |
rbac.create |
if true, create & use RBAC resources |
true |
serviceAccount.create |
if true, create a service account |
true |
serviceAccount.name |
the name of the service account to use. If not set and create is true, a name is generated using the fullname template. |
“ |
detachAsg |
if true, the spot termination handler will detect (standard) AutoScaling Group, and initiate detach when termination notice is detected. |
false |
gracePeriod |
Grace period for node draining | 120 |
envFromSecret |
Name of a Kubernetes secret (must be manually created in the same namespace) containing values to be added to the environment | "" |
resources |
pod resource requests & limits | {} |
nodeSelector |
node labels for pod assignment | {} |
tolerations |
node taints to tolerate (requires Kubernetes >=1.6) | [] |
affinity |
node/pod affinities (requires Kubernetes >=1.6) | {} |
priorityClassName |
pod priorityClassName for pod. | ” |
hostNetwork |
controls whether the pod may use the node network namespace | true |
podAnnotations |
annotations to be added to pods | {} |
updateStrategy |
can be either RollingUpdate or OnDelete |
RollingUpdate |
podSecurityContext |
security context applied to the pod | {} |