deprecated-helm-charts/stable/ark

Ark-server

This helm chart installs Ark version v0.9.0 https://github.com/heptio/ark/tree/v0.9.0

Premise

In general, Helm cannot install CRDs and resources based on these CRDs in the same Helm chart because CRDs need to be installed before CRD resources can be created and Helm cannot guarantee the correct ordering for this to work.

As a workaround, the chart creates a Config resource via post-install hook. Since resources created by hooks are not managed by Helm, a pre-delete hook removes the Config CRD when the release is deleted.

At the same time the resources created with the hook are completely transparent to Helm, that is, when you delete the chart those resources remain there. Hence we need a second hook for deleting them (see hook-delete.yaml)

ConfigMap customization

Since we want to have a customizable chart it's important that the configmap is a template and not a static file. To do this we add the keyword tpl when reading the file

• {{ (tpl (.Files.Glob "configuration/").AsConfig .) | indent 2 }}

Prerequisites

Secret for cloud provider credentials

Ark server needs an IAM service account in order to run, if you don't have it you must create it. Please follow the official documentation: https://heptio.github.io/ark/v0.9.0/cloud-common

Don't forget the step to create the secret

kubectl create secret generic cloud-credentials --namespace <ARK_NAMESPACE> --from-file cloud=credentials-ark

Configuration

Please change the values.yaml according to your setup See here for the official documentation https://heptio.github.io/ark/v0.9.0/config-definition

Parameter	Description	Default	Required
cloudprovider	Cloud provider	nil	yes
bucket	Object storage where to store backups	nil	yes
region	AWS region	nil	only if using AWS
apitimeout	Api Timeout	nil	only if using Azure
credentials	Credentials	nil	Yes (not required for kube2iam)
backupSyncPeriod	How frequently Ark queries the object storage to make sure that the appropriate Backup resources have been created for existing backup files.	60m	yes
gcSyncPeriod	How frequently Ark queries the object storage to delete backup files that have passed their TTL.	60m	yes
scheduleSyncPeriod	How frequently Ark checks its Schedule resource objects to see if a backup needs to be initiated	1m	yes
restoreOnlyMode	When RestoreOnly mode is on, functionality for backups, schedules, and expired backup deletion is turned off. Restores are made from existing backup files in object storage.	false	yes
kubectl.image	A docker image with kubectl, required by hook-deploy.yaml and hook-delete.yaml	docker pull claranet/gcloud-kubectl-docker	yes

Parameter	Description	Default
image.repository	Image repository	gcr.io/heptio-images/ark
image.tag	Image tag	v0.9.1
image.pullPolicy	Image pull policy	IfNotPresent
kubectl.image.repository	Image repository	claranet/gcloud-kubectl-docker
kubectl.image.tag	Image tag	1.0.0
kubectl.image.pullPolicy	Image pull policy	IfNotPresent
podAnnotations	Annotations for the Ark server pod	{}
rbac.create	If true, create and use RBAC resources	true
rbac.server.serviceAccount.create	Whether a new service account name that the server will use should be created	true
rbac.server.serviceAccount.name	Service account to be used for the server. If not set and rbac.server.serviceAccount.create is true a name is generated using the fullname template	``
rbac.hook.serviceAccount.create	Whether a new service account name that the hook will use should be created	true
rbac.hook.serviceAccount.name	Service account to be used for the server. If not set and rbac.hook.serviceAccount.create is true a name is generated using the fullname template	``
resources	Resource requests and limits	{}
tolerations	List of node taints to tolerate	[]
nodeSelector	Node labels for pod assignment	{}
configuration.persistentVolumeProvider.name	The name of the cloud provider the cluster is using for persistent volumes, if any	{}
configuration.persistentVolumeProvider.config.region	The cloud provider region (AWS only)	``
configuration.persistentVolumeProvider.config.apiTimeout	The API timeout (Azure only)
configuration.backupStorageProvider.name	The name of the cloud provider that will be used to actually store the backups (aws, azure, gcp)	``
configuration.backupStorageProvider.bucket	The storage bucket where backups are to be uploaded	``
configuration.backupStorageProvider.config.region	The cloud provider region (AWS only)	``
configuration.backupStorageProvider.config.s3ForcePathStyle	Set to true for a local storage service like Minio	``
configuration.backupStorageProvider.config.s3Url	S3 url (primarily used for local storage services like Minio)	``
configuration.backupStorageProvider.config.kmsKeyId	KMS key for encryption (AWS only)	``
configuration.backupSyncPeriod	How frequently Ark queries the object storage to make sure that the appropriate Backup resources have been created for existing backup files	60m
configuration.extraEnvVars	Key/values for extra environment variables such as AWS_CLUSTER_NAME, etc	{}
configuration.gcSyncPeriod	How frequently Ark queries the object storage to delete backup files that have passed their TTL	60m
configuration.scheduleSyncPeriod	How frequently Ark checks its Schedule resource objects to see if a backup needs to be initiated	1m
configuration.resourcePriorities	An ordered list that describes the order in which Kubernetes resource objects should be restored	[]
configuration.restoreOnlyMode	When RestoreOnly mode is on, functionality for backups, schedules, and expired backup deletion is turned off. Restores are made from existing backup files in object storage	false
credentials.existingSecret	If specified and useSecret is true, uses an existing secret with this name instead of creating one	``
credentials.useSecret	Whether a secret should be used. Set this to false when using kube2iam	true
credentials.secretContents	Contents for the credentials secret	{}

How to

helm install --name ark --namespace heptio-ark ./ark

Remove heptio/ark

Remember that when you remove Ark all backups remain untouched