Highly available Vault enterprise performance clusters with integrated storage (Raft)
Important Note: This chart is not compatible with Helm 2. Please use Helm 3.6+ with this chart.
The following is an example of creating a performance cluster using Vault Helm.
For more information on Disaster Recovery, see the official documentation.
For license configuration refer to Running Vault Enterprise.
Primary cluster
First, create the primary cluster:
helm install vault-primary hashicorp/vault \
--set='server.image.repository=hashicorp/vault-enterprise' \
--set='server.image.tag=1.18.1-ent' \
--set='server.ha.enabled=true' \
--set='server.ha.raft.enabled=true'
Next, initialize and unseal vault-primary-0
pod:
kubectl exec -ti vault-primary-0 -- vault operator init
kubectl exec -ti vault-primary-0 -- vault operator unseal
Finally, join the remaining pods to the Raft cluster and unseal them. The pods will need to communicate directly so we'll configure the pods to use the internal service provided by the Helm chart:
kubectl exec -ti vault-primary-1 -- vault operator raft join http://vault-primary-0.vault-primary-internal:8200
kubectl exec -ti vault-primary-1 -- vault operator unseal
kubectl exec -ti vault-primary-2 -- vault operator raft join http://vault-primary-0.vault-primary-internal:8200
kubectl exec -ti vault-primary-2 -- vault operator unseal
To verify if the Raft cluster has successfully been initialized, run the following.
First, login using the root
token on the vault-primary-0
pod:
kubectl exec -ti vault-primary-0 -- vault login
Next, list all the raft peers:
$ kubectl exec -ti vault-primary-0 -- vault operator raft list-peers
Node Address State Voter
---- ------- ----- -----
a1799962-8711-7f28-23f0-cea05c8a527d vault-primary-0.vault-primary-internal:8201 leader true
e6876c97-aaaa-a92e-b99a-0aafab105745 vault-primary-1.vault-primary-internal:8201 follower true
4b5d7383-ff31-44df-e008-6a606828823b vault-primary-2.vault-primary-internal:8201 follower true
Secondary cluster
With the primary cluster created, next create a secondary cluster.
helm install vault-secondary hashicorp/vault \
--set='server.image.repository=hashicorp/vault-enterprise' \
--set='server.image.tag=1.18.1-ent' \
--set='server.ha.enabled=true' \
--set='server.ha.raft.enabled=true'
Next, initialize and unseal vault-secondary-0
pod:
kubectl exec -ti vault-secondary-0 -- vault operator init
kubectl exec -ti vault-secondary-0 -- vault operator unseal
Finally, join the remaining pods to the Raft cluster and unseal them. The pods will need to communicate directly so we'll configure the pods to use the internal service provided by the Helm chart:
kubectl exec -ti vault-secondary-1 -- vault operator raft join http://vault-secondary-0.vault-secondary-internal:8200
kubectl exec -ti vault-secondary-1 -- vault operator unseal
kubectl exec -ti vault-secondary-2 -- vault operator raft join http://vault-secondary-0.vault-secondary-internal:8200
kubectl exec -ti vault-secondary-2 -- vault operator unseal
To verify if the Raft cluster has successfully been initialized, run the following.
First, login using the root
token on the vault-secondary-0
pod:
kubectl exec -ti vault-secondary-0 -- vault login
Next, list all the raft peers:
$ kubectl exec -ti vault-secondary-0 -- vault operator raft list-peers
Node Address State Voter
---- ------- ----- -----
a1799962-8711-7f28-23f0-cea05c8a527d vault-secondary-0.vault-secondary-internal:8201 leader true
e6876c97-aaaa-a92e-b99a-0aafab105745 vault-secondary-1.vault-secondary-internal:8201 follower true
4b5d7383-ff31-44df-e008-6a606828823b vault-secondary-2.vault-secondary-internal:8201 follower true
Enable performance replication on primary
With the initial clusters setup, we can now configure them for Performance Replication.
First, on the primary cluster, enable replication:
kubectl exec -ti vault-primary-0 -- vault write -f sys/replication/performance/primary/enable primary_cluster_addr=https://vault-primary-active:8201
Next, create a token the secondary cluster will use to configure replication:
kubectl exec -ti vault-primary-0 -- vault write sys/replication/performance/primary/secondary-token id=secondary
The token in the output will be used when configuring the secondary cluster.
Enable performance replication on secondary
Using the token created in the last step, enable Performance Replication on the secondary:
kubectl exec -ti vault-secondary-0 -- vault write sys/replication/performance/secondary/enable token=<TOKEN FROM PRIMARY>
Last, delete the remainder secondary pods and unseal them using the primary unseal token after Kubernetes reschedules them:
kubectl delete pod vault-secondary-1
kubectl exec -ti vault-secondary-1 -- vault operator unseal <PRIMARY UNSEAL TOKEN>
kubectl delete pod vault-secondary-2
kubectl exec -ti vault-secondary-2 -- vault operator unseal <PRIMARY UNSEAL TOKEN>