terraform-aws-eks-velero

Terraform module for deploying Kubernetes Velero inside a pre-existing EKS cluster. Velero (formerly Heptio Ark) is an open source tool to safely backup and restore, perform disaster recovery, and migrate Kubernetes cluster resources and persistent volumes.

Usage

module "velero" {
  source = "git::https://github.com/DNXLabs/terraform-aws-eks-velero.git"

  enabled = true

  cluster_name                     = module.eks_cluster.cluster_id
  cluster_identity_oidc_issuer     = module.eks_cluster.cluster_oidc_issuer_url
  cluster_identity_oidc_issuer_arn = module.eks_cluster.oidc_provider_arn
  aws_region                       = data.aws_region.current.name
  bucket_name                      = ""
}

Step 1: Deploy and customize App on the source cluster

In this example we will be using wordpress, follow the steps below:

Add the Bitnami chart repository to Helm:

helm repo add bitnami https://charts.bitnami.com/bitnami

Modify your context to reflect the source cluster. Deploy WordPress on the source cluster and make it available at a public load balancer IP address. Replace the PASSWORD placeholder with a password for your WordPress dashboard.

helm install wordpress bitnami/wordpress --set service.type=LoadBalancer --set wordpressPassword=PASSWORD

Wait for the deployment to complete and then use the command below to obtain the load balancer IP address:

kubectl get svc --namespace default wordpress --template "{{ range (index .status.loadBalancer.ingress 0) }}{{.}}

Step 2: Backup the deployment on the source cluster

Once Velero is running, create a backup of the WordPress deployment:

velero backup create wpb --selector release=wordpress

Execute the command below to view the contents of the backup and confirm that it contains all the required resources:

velero backup describe wpb  --details

At this point, your backup is ready. You can repeat this step every time you wish to have a manual backup, or you can configure a schedule for automatic backups.

Step 3: Restore the deployment on the destination cluster

Once your backup is complete and confirmed, you can now turn your attention to restoring it. Note that this may take a few minutes to complete.

velero restore create --from-backup wpb

Wait until the backed-up resources are fully deployed and active. Use the kubectl get pods and kubectl get svc commands to track the status of the pods and service endpoint. Once the deployment has been restored, browse to the load balancer IP address and confirm that you see the same post content as that on the source cluster.

Requirements

Name	Version
terraform	>= 0.13
aws	>= 3.13, < 4.0
helm	>= 1.0, < 1.4.0
kubernetes	>= 1.10.0

Providers

Name	Version
aws	>= 3.13, < 4.0
helm	>= 1.0, < 1.4.0
kubernetes	>= 1.10.0

Inputs

Name	Description	Type	Default	Required
aws_region	AWS region where secrets are stored.	`string`	n/a	yes
bucket_name	Bucket name to store the backups.	`string`	n/a	yes
cluster_identity_oidc_issuer	The OIDC Identity issuer for the cluster.	`string`	n/a	yes
cluster_identity_oidc_issuer_arn	The OIDC Identity issuer ARN for the cluster that can be used to associate IAM roles with a service account.	`string`	n/a	yes
cluster_name	The name of the cluster	`string`	n/a	yes
create_bucket	Create bucket to store or get the backups.	`bool`	`true`	no
create_namespace	Whether to create Kubernetes namespace with name defined by `namespace`.	`bool`	`true`	no
enabled	Variable indicating whether deployment is enabled.	`bool`	`true`	no
helm_chart_name	Velero Helm chart name to be installed	`string`	`"velero"`	no
helm_chart_release_name	Helm release name	`string`	`"velero"`	no
helm_chart_repo	Velero repository name.	`string`	`"https://vmware-tanzu.github.io/helm-charts"`	no
helm_chart_version	Velero Helm chart version.	`string`	`"2.14.5"`	no
mod_dependency	Dependence variable binds all AWS resources allocated by this module, dependent modules reference this variable.	`any`	`null`	no
namespace	Kubernetes namespace to deploy Velero Helm chart.	`string`	`"velero"`	no
service_account_name	Velero service account name	`string`	`"velero"`	no
settings	Additional settings which will be passed to the Helm chart values.	`map(any)`	`{}`	no
volume_snapshot_name	Variable indicating the snapshot name.	`string`	`"velero-snapshot"`	no

Outputs

No output.

Authors

Module managed by DNX Solutions.

License

Apache 2 Licensed. See LICENSE for full details.

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