Installing MongoDB for Product Master

To use the Digital Asset Management (DAM) or Machine learning (ML) features of the Product Master service, you need to install MongoDB by using the Helm chart.

1. Log in to your Red Hat® OpenShift® cluster as an instance administrator.

   oc login OpenShift_URL:port

2. Change to the project (namespace) where Product Master is installed by using the following command.

   oc project <namespace>

3. Assign required privileges for this service by using the following command.

   oc adm policy add-scc-to-user privileged system:serviceaccount:<namespace>:mongodb-Kubernetes-operator

   oc adm policy add-scc-to-user privileged system:serviceaccount:<namespace>:mongodb-database

4. List all the releases for the namespace by using the following command.

   helm repo list

   Output

   NAME URL
   mongodb https://mongodb.github.io/helm-charts

5. Add the MongoDB helm-charts repository to Helm by using the following command.

   helm repo add MongoDB https://mongodb.github.io/helm-charts

6. Install MongoDB by using the following command.

   helm install community-operator MongoDB/community-operator 

7. Create PersistentVolume YAML files by using the following command.

   cat <<EOF| oc apply –f -
   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     labels:
       app: productmaster-mongodb-svc
     name: logs-volume-productmaster-mongodb-0
     namespace: <namespace>
   spec:
     accessModes:
       - ReadWriteOnce
     storageClassName: <storage_class>
     resources:
       requests:
         storage: 2G
     volumeMode: Filesystem
   EOF

   cat <<EOF| oc apply –f -
   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     labels:
       app: productmaster-mongodb-svc
     name: data-volume-productmaster-mongodb-0
     namespace: <namespace>
   spec:
     accessModes:
       - ReadWriteOnce
     storageClassName: <storage_class>
     resources:
       requests:
         storage: 2G
     volumeMode: Filesystem
   EOF

8. Create and apply the CR file with the following entries. Update the username and password fields in the CR file.

   cat <<EOF| oc apply –f -
   apiVersion: mongodbcommunity.mongodb.com/v1
   kind: MongoDBCommunity
   metadata:
     name: productmaster-mongodb
   spec:
   #To create multiple replicas, update the value of the members property to the number of replicas required
     members: 1
     type: ReplicaSet
     version: "7.0.2"
     security:
       authentication:
         modes: ["SCRAM-SHA-1"]
     users:
       - name: <mongodb_username>
         db: admin
         passwordSecretRef:
           name: my-user-password
         roles:
           - name: clusterAdmin
             db: admin 
           - name: userAdminAnyDatabase
             db: admin 
           - name: readWriteAnyDatabase
             db: admin
           - name: backup
             db: admin
         
         scramCredentialsSecretName: my-scram
     statefulSet:
       spec:
         serviceName: productmaster-mongodb-svc
         selector: {}
   
   # the user credentials will be generated from this secret
   # once the credentials are generated, this secret is no longer required
   ---
   apiVersion: v1
   kind: Secret
   metadata:
     name: my-user-password
   type: Opaque
   stringData:
     password: <mongodb_password>
   EOF

9. View MongoDB instance and MongoDB operator statuses by using the following command.

   oc get pods | grep mongodb

   Example output

   NAME                                 READY   STATUS   RESTARTS     AGE
   mongodb-kubernetes-operator-857946dd48-wb29f    1/1     Running     0        1m40s
   productmaster-mongodb-0                         2/2     Running     0        13s

10. Go to the MongoDB instance by using the following command.

    oc rsh productmaster-mongodb-0

11. Use the following commands to ensure that the MongoDB instance is up and running with username and password.

    mongosh

    use admin

    db.auth (“username”,”password”)

    use {{ db_name }

    db.createcollection(‘test1’)

12. Ensure that you have the same service name as specified in the mongodb_cr_openshift file. See the service details by using the following command.

    oc get svc | grep mongodb