Deploying a MongoDB database instance with a custom resource

After you install the MongoDB service on Cloud Pak for Data, you must deploy a database instance. You can use the MongoDB OpenShift® command-line interface to deploy the database by creating a custom resource.

1. Set the following environment variables:
   1. Set the MGDB_INSTANCE_NAME environment variable to the name that you want to use for this database instance.

      export MGDB_INSTANCE_NAME=<name>

   2. Set the MGDB_VERSION environment variable to the version of the database to deploy.

      export MGDB_VERSION=<version>

      Use the following table to determine the appropriate value:

      Cloud Pak for Data version	Service instance versions (Pick one)
      5.0.3	6.0.16-ent, 7.0.12-ent
      5.0.2	6.0.15-ent, 7.0.11-ent
      5.0.1	6.0.15-ent, 7.0.11-ent
      5.0.0	5.0.23-ent, 6.0.12-ent

   3. Set the OPS_MANAGER_INSTANCE_NAME environment variable to the MongoDB Ops Manager instance deployed in the project.

      export OPS_MANAGER_INSTANCE_NAME=<name>

   4. Set the STG_CLASS_BLOCK environment variable to the block storage class you want to use for this database instance.

      export STG_CLASS_BLOCK=<storage>

2. Run the following command to deploy your database:

   cat <<EOF | oc apply -f -
   apiVersion: mongodb.cpd.ibm.com/v1
   kind: CPDMongoDB
   metadata:
     name: ${MGDB_INSTANCE_NAME}     
     namespace: ${PROJECT_CPD_INST_OPERANDS}
   spec:
     forceDeleteResource: false
     license:
       accept: true
     version: "${MGDB_VERSION}" 
     opsManager: ${OPS_MANAGER_INSTANCE_NAME}     
     replicas: 1
     storageSize: "2G"
     storageClass: ${STG_CLASS_BLOCK}     
     resources:
       requests:
         memory: 4Gi
         cpu: 1
       limits:
         memory: 4Gi
         cpu: 1
   EOF

   Tip: To automatically remove Persistent Volume Claims (PVCs) and secrets when you delete an instance, set the forceDeleteResources key under the spec key to true.