Chapter 2. Deploy using dynamic storage devices

Procedure

1. Log in to the OpenShift Web Console.
2. Click Operators OperatorHub.
3. Scroll or type OpenShift Data Foundation into the Filter by keyword box to find the OpenShift Data Foundation Operator.
4. Click Install.

5. Set the following options on the Install Operator page:

   1. Update Channel as stable-4.10.
   2. Installation Mode as A specific namespace on the cluster.
   3. Installed Namespace as Operator recommended namespace openshift-storage. If Namespace openshift-storage does not exist, it is created during the operator installation.

   4. Select Approval Strategy as Automatic or Manual.

      If you select Automatic updates, then the Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without any intervention.

      If you select Manual updates, then the OLM creates an update request. As a cluster administrator, you must then manually approve that update request to update the Operator to a newer version.

   5. Ensure that the Enable option is selected for the Console plugin.
   6. Click Install.

Procedure

1. Enable the Key/Value (KV) backend path in Vault.

   For Vault KV secret engine API, version 1:

   $ vault secrets enable -path=odf kv

   For Vault KV secret engine API, version 2:

   $ vault secrets enable -path=odf kv-v2

2. Create a policy to restrict users to perform a write or delete operation on the secret using the following commands.

   echo '
   path "odf/*" {
     capabilities = ["create", "read", "update", "delete", "list"]
   }
   path "sys/mounts" {
   capabilities = ["read"]
   }'| vault policy write odf -

3. Create a token matching the above policy.

   $ vault token create -policy=odf -format json

Procedure

1. Create a service account:

   $ oc -n openshift-storage create serviceaccount <serviceaccount_name>

   where, <serviceaccount_name> specifies the name of the service account.

   For example:

   $ oc -n openshift-storage create serviceaccount odf-vault-auth

2. Create clusterrolebindings and clusterroles:

   $ oc -n openshift-storage create clusterrolebinding vault-tokenreview-binding --clusterrole=system:auth-delegator --serviceaccount=openshift-storage:_<serviceaccount_name>_

   For example:

   $ oc -n openshift-storage create clusterrolebinding vault-tokenreview-binding --clusterrole=system:auth-delegator --serviceaccount=openshift-storage:odf-vault-auth

3. Depending on the OpenShift Container Platform version, perform one of the following:

   • For OpenShift Container Platform 4.10:

     • Identify the secret name associated with the serviceaccount (SA) created above.

       $ VAULT_SA_SECRET_NAME=$(oc -n openshift-storage get sa <SA_NAME> -o jsonpath="{.secrets[*]['name']}") | grep -o "[^[:space:]]*-token-[^[:space:]]*"

       For example:

       $ VAULT_SA_SECRET_NAME=$(oc -n openshift-storage get sa odf-vault-auth -o jsonpath="{.secrets[*]['name']}" | grep -o "[^[:space:]]*-token-[^[:space:]]*")

   • For OpenShift Container Platform 4.11:

     • Create a secret for the serviceaccount token and CA certificate.

       $ cat <<EOF | oc create -f -
       apiVersion: v1
       kind: Secret
       metadata:
         name: odf-vault-auth-token
         namespace: openshift-storage
         annotations:
           kubernetes.io/service-account.name: <serviceaccount_name>
       type: kubernetes.io/service-account-token
       data: {}
       EOF

       where, <serviceaccount_name> is the service account created in the earlier step.

       $ VAULT_SA_SECRET_NAME=odf-vault-auth-token

4. Get the token and the CA certificate from the secret.

   $ SA_JWT_TOKEN=$(oc -n openshift-storage get secret "$VAULT_SA_SECRET_NAME" -o jsonpath="{.data.token}" | base64 --decode; echo)
   $ SA_CA_CRT=$(oc -n openshift-storage get secret "$VAULT_SA_SECRET_NAME" -o jsonpath="{.data['ca\.crt']}" | base64 --decode; echo)

5. Retrieve the OCP cluster endpoint.

   $ OCP_HOST=$(oc config view --minify --flatten -o jsonpath="{.clusters[0].cluster.server}")

6. Fetch the service account issuer.

   $ oc proxy &
   $ proxy_pid=$!
   $ issuer="$( curl --silent http://127.0.0.1:8001/.well-known/openid-configuration | jq -r .issuer)"
   $ kill $proxy_pid

7. Use the information collected in the steps above to setup the Kubernetes authentication method in Vault as shown below.

   $ vault auth enable kubernetes
   $ vault write auth/kubernetes/config \
             token_reviewer_jwt="$SA_JWT_TOKEN" \
             kubernetes_host="$OCP_HOST" \
             kubernetes_ca_cert="$SA_CA_CRT" \
             issuer="$issuer"

   Important

   To configure Kubernetes authentication method in Vault when the issuer is empty.

   $ vault write auth/kubernetes/config \
             token_reviewer_jwt="$SA_JWT_TOKEN" \
             kubernetes_host="$OCP_HOST" \
             kubernetes_ca_cert="$SA_CA_CRT"

8. Enable the Key/Value (KV) backend path in Vault.

   For Vault KV secret engine API, version 1.

   $ vault secrets enable -path=odf kv

   For Vault KV secret engine API, version 2.

   $ vault secrets enable -path=odf kv-v2

9. Create a policy to restrict users to perform a write or delete operation on the secret:

   echo '
   path "odf/*" {
     capabilities = ["create", "read", "update", "delete", "list"]
   }
   path "sys/mounts" {
   capabilities = ["read"]
   }'| vault policy write odf -

10. Generate the roles:

    $ vault write auth/kubernetes/role/odf-rook-ceph-op \
            bound_service_account_names=rook-ceph-system,rook-ceph-osd,noobaa \
            bound_service_account_namespaces=openshift-storage \
            policies=odf \
            ttl=1440h

    The role odf-rook-ceph-op is later used while you configure the KMS connection details during the creation of the storage system.

    $ vault write auth/kubernetes/role/odf-rook-ceph-osd \
            bound_service_account_names=rook-ceph-osd \
            bound_service_account_namespaces=openshift-storage \
            policies=odf \
            ttl=1440h

Procedure

1. In the OpenShift Web Console, click Operators Installed Operators to view all the installed operators.

   Ensure that the Project selected is openshift-storage.

2. Click on the OpenShift Data Foundation operator, and then click Create StorageSystem.

3. In the Backing storage page, select the following:

   1. Select Full Deployment for the Deployment type option.
   2. Select the Use an existing StorageClass option.

   3. Select the Storage Class.

      By default, it is set to thin. If you have created a storage class with zeroedthick or eagerzeroedthick disk format for thick-provisioned storage, then that storage class is listed in addition to the default, thin storage class.

   4. Click Next.

4. In the Capacity and nodes page, provide the necessary information:

   1. Select a value for Requested Capacity from the dropdown list. It is set to 2 TiB by default.

      Note

      Once you select the initial storage capacity, cluster expansion is performed only using the selected usable capacity (three times of raw storage).

   2. In the Select Nodes section, select at least three available nodes.

   3. Optional: Select the Taint nodes checkbox to dedicate the selected nodes for OpenShift Data Foundation.

      Spread the worker nodes across three different physical nodes, racks, or failure domains for high availability.

      Use vCenter anti-affinity to align OpenShift Data Foundation rack labels with physical nodes and racks in the data center to avoid scheduling two worker nodes on the same physical chassis.

      If the nodes selected do not match the OpenShift Data Foundation cluster requirement of the aggregated 30 CPUs and 72 GiB of RAM, a minimal cluster is deployed. For minimum starting node requirements, see Resource requirements section in Planning guide.

      Select the Taint nodes checkbox to make selected nodes dedicated for OpenShift Data Foundation.

   4. Click Next.

5. Optional: In the Security and network page, configure the following based on your requirements:

   1. To enable encryption, select Enable data encryption for block and file storage.

   2. Select either one or both the encryption levels:

      • Cluster-wide encryption

        Encrypts the entire cluster (block and file).

      • StorageClass encryption

        Creates encrypted persistent volume (block only) using encryption enabled storage class.

   3. Select the Connect to an external key management service checkbox. This is optional for cluster-wide encryption.

      1. Key Management Service Provider is set to Vault by default.

      2. Select an Authentication Method.

         Using Token authentication method

         • Enter a unique Connection Name, host Address of the Vault server ('https://<hostname or ip>'), Port number and Token.

         • Expand Advanced Settings to enter additional settings and certificate details based on your Vault configuration:

           • Enter the Key Value secret path in Backend Path that is dedicated and unique to OpenShift Data Foundation.
           • Optional: Enter TLS Server Name and Vault Enterprise Namespace.
           • Upload the respective PEM encoded certificate file to provide the CA Certificate, Client Certificate and Client Private Key .
           • Click Save.

         Using Kubernetes authentication method

         • Enter a unique Vault Connection Name, host Address of the Vault server ('https://<hostname or ip>'), Port number and Role name.

         • Expand Advanced Settings to enter additional settings and certificate details based on your Vault configuration:

           • Enter the Key Value secret path in Backend Path that is dedicated and unique to OpenShift Data Foundation.
           • Optional: Enter TLS Server Name and Authentication Path if applicable.
           • Upload the respective PEM encoded certificate file to provide the CA Certificate, Client Certificate and Client Private Key .
           • Click Save.

   4. Select Default (SDN) if you are using a single network or Custom (Multus) Network if you plan to use multiple network interfaces.

      1. Select a Public Network Interface from the dropdown.

      2. Select a Cluster Network Interface from the dropdown.

         Note

         If you are using only one additional network interface, select the single NetworkAttachementDefinition that is, ocs-public-cluster for the Public Network Interface and leave the Cluster Network Interface blank.

   5. Click Next.

6. In the Review and create page, review the configuration details.

   To modify any configuration settings, click Back.

7. Click Create StorageSystem.