Kubernetes on Docker EE

Make sure the prerequisites for StorageOS are satisfied before proceeding.

Install StorageOS operator

Our cluster operator is a Kubernetes native application developed to deploy and configure StorageOS clusters, and assist with maintenance operations. We recommend its use for standard installations.

The operator is a Kubernetes controller that watches the StorageOSCluster CRD. Once the controller is ready, a StorageOS cluster definition can be created. The operator will deploy a StorageOS cluster based on the configuration specified in the cluster definition.

Install

The StorageOS Cluster Operator can be installed with two options.

  • Using Helm
  • Standard yaml manifests

(Option 1) Using Helm

helm repo add storageos https://charts.storageos.com
helm install storageos/storageoscluster-operator --namespace storageos-operator

The Helm chart can be found in the Charts public repository.

The StorageOS Cluster Operator source code can be found in the cluster-operator repository.

The helm server, tiller, needs privileges to be able to deploy the StorageOS Cluster Operator. You can add the service account to the cluster-admin role for simplicity or create a role that matches the cluster-operator requirements.

(Option 2) Standard yaml manifests

git clone https://github.com/storageos/deploy.git storageos
cd storageos/k8s/deploy-storageos/cluster-operator
./deploy-operator.sh

Verify the Cluster Operator Pod

[[email protected]]# kubectl -n storageos-operator get pod
NAME                                         READY     STATUS    RESTARTS   AGE
storageoscluster-operator-68678798ff-f28zw   1/1       Running   0          3m

The READY 1/1 indicates that stos resources can be created.

Create a Secret

Before deploying a StorageOS cluster, create a Secret defining the StorageOS API Username and Password in base64 encoding.

The API username and password are used to create the default StorageOS admin account which can be used with the StorageOS CLI and to login to the StorageOS GUI. The account defined in the secret is also used by Kubernetes to authenticate against the StorageOS API when installing with the native driver.

kubectl create -f - <<END
apiVersion: v1
kind: Secret
metadata:
  name: "storageos-api"
  namespace: "default"
  labels:
    app: "storageos"
type: "kubernetes.io/storageos"
data:
  # echo -n '<secret>' | base64
  apiUsername: c3RvcmFnZW9z
  apiPassword: c3RvcmFnZW9z
END

This example contains a default password, for production installations, use a unique, strong password.

You can define a base64 value by echo -n "mystring" | base64.

Make sure that the encoding of the credentials doesn’t have special characters such as ‘\n’. The echo -n ensures that a trailing new line is not appended to the string.

If you wish to change the default accounts details post-install please see Managing Users

Trigger a StorageOS installation

This is a Cluster Definition example.

kubectl create -f - <<END
apiVersion: "storageos.com/v1alpha1"
kind: "StorageOSCluster"
metadata:
  name: "example-storageos"
spec:
  secretRefName: "storageos-api" # Reference the Secret created in the previous step
  secretRefNamespace: "default"  # Namespace of the Secret
  images:
    nodeContainer: "storageos/node:1.1.4" # StorageOS version
  resources:
    requests:
    memory: "512Mi"
END

spec parameters available on the Cluster Operator configuration page.

You can find more examples such as deployments with CSI or deployments referencing a external etcd kv store. store for StorageOS in the Cluster Operator examples page.

If this is your first installation you may wish to follow the StorageOS Volume guide for an example of how to mount a StorageOS volume in a Pod.