Configuring Maximo Application Suite with Amazon Web Services DocumentDB

To configure a new Maximo Application Suite instance to connect with the Amazon Web Services DocumentDB instance, on the Red Hat® OpenShift® console, update the MongoCfg CRD and LicenseService CRD with the Amazon Web Services DocumentDB connection details.

About this task

Note: You can configure a new Maximo Application Suite instance to connect with DocumentDB by using the procedure that is described in this document. However, you cannot migrate your existing data from MongoDB by using this procedure.

Procedure

Log in to the Red Hat OpenShift console as an admin user.
From the side navigation menu, select Administration > CustomResourceDefinition and in the list, click MongoCfg CRD.
Click Instances tab.

Update the MongoCfg CRD with the Amazon Web Services DocumentDB connection details.

By default Maximo Application Suite uses the MongoCfg CRD to connect to MongoDB. To connect to the DocumentDB, you must update the connection details on the YAML tab on the Red Hat OpenShift console.

Create a backup file of the MongoCfg CRD YAML file.
To create a backup file, either copy and paste the MongoCfg CRD YAML file contents to a file or use the following oc command:
```
oc get MongoCfg <instance name> -o yaml > instance_name.yaml
```

Create a secret docdb-dbadmin YAML file in the mas-<ClusterUniqueString>-core namespace.

The following example is a sample secret YAML file in the mas-vbpoyr-core namespace.

---
# DocumentDB credentials for Core
apiVersion: v1
kind: Secret
type: Opaque
metadata:
  name: documentdb-admin
  namespace: mas-vbpoyr-core
stringData:
  username: docdbadmin
  password: docdbadmin

Update the MongCfg CRD YAML file with the DocumentDB connection details.

spec.certificates – The certificate for the specific DocumentDB. Amazon Web Services DocumentDB provides a PEM file.
If the certificate authority is rds-ca-2019, then download the PEM files from Certificate bundles for specific AWS Regions. For example, for ca-central-1 region, you can use the PEM file from ca-central-1-bundle.pem.

However, if the certificate authority is rds-ca-rsa2048-g1, then to download the Root CA RSA2048 PEM files follow steps provided in the Extracting Root CA RSA2048 PEM files section.
spec.config.credentials.secretName – The secret that contains the DocumentDB admin username and password.
spec.config.hosts.host – DocumentDB hostname.
spec.config.hosts.port – DocumentDB port.
spec.config.retryWrites – Set to false.

The following example is a sample MongoCfg CRD YAML file that is updated with DocumentDB connection details:

---
apiVersion: config.mas.ibm.com/v1
kind: MongoCfg
metadata:
  resourceVersion: '369530'
  name: vbpoyr-mongo-system
  uid: 48318d43-b0f6-4848-822b-4443a104b8f0
  generation: 1
  namespace: mas-vbpoyr-core
  ownerReferences:
    - apiVersion: core.mas.ibm.com/v1
      kind: Suite
      name: vbpoyr
      uid: 0df07123-1ad0-492a-aec0-76f88583dd98
  labels:
    mas.ibm.com/configScope: system
    mas.ibm.com/instanceId: vbpoyr
spec:
  certificates:
    - alias: ca
      crt: |
        -----BEGIN CERTIFICATE-----
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        -----BEGIN CERTIFICATE-----
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        -----BEGIN CERTIFICATE-----
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        -----END CERTIFICATE-----
        -----BEGIN CERTIFICATE-----
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        -----END CERTIFICATE-----
        -----BEGIN CERTIFICATE-----
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  config:
    authMechanism: DEFAULT
    configDb: admin
    retryWrites: false       
    credentials:
      secretName: documentdb-admin
    hosts:
      - host: docdb-vbpoyr.ctnrnscupeqf.ca-central-1.docdb.amazonaws.com
        port: 27017
  displayName: Document Db in 'mongoce-vbpoyr' namespace
  type: external

Save the MongoCfg CRD YAML file.
After you apply the changes, reconciliation runs to connect to the new DocumentDB instance. On successful connection, the last reconciliation in the condition section is shown as successful.

Update the LicenseService CRD with the Amazon Web Services DocumentDB connection details.

Create a backup file of the LicenseService Suite License Service service instance YAML file.

Create a secret docdb-dbadmin YAML file in the ibm-sls-<ClusterUniqueString> namespace.

The following example is a sample secret YAML file in the ibm-sls-vbpoyr namespace.

---
# DocumentDB credentials for SLS
apiVersion: v1
kind: Secret
type: Opaque
metadata:
  name: documentdb
  namespace: ibm-sls-vbpoyr
stringData:
  username: docdbadmin
  password: docdbadmin

On the Red Hat OpenShift console, from the side navigation menu, select CustomResourceDefinition > LicenseService.

Select the Instances tab and click the CRD name. Update the LicenseService CRD YAML file with the following DocumentDB connection details.

spec.mongo.certificates – The certificate for the specific DocumentDB.
If the certificate authority is rds-ca-2019, then download the PEM files from Certificate bundles for specific AWS Regions. For example, for ca-central-1 region, you can use the PEM file from ca-central-1-bundle.pem.

However, if the certificate authority is rds-ca-rsa2048-g1, then to download the Root CA RSA2048 PEM files follow steps provided in the Extracting Root CA RSA2048 PEM files section.
spec.mongo.secretName – The secret that contains the DocumentDB admin username and password.
spec.mongo.nodes.host – DocumentDB hostname.
spec.mongo.nodes.port – DocumentDB port.
spec.mongo.retryWrites – Set to false.

The following example is a sample LicenseService YAML file that is updated with DocumentDB connection details:

---
apiVersion: sls.ibm.com/v1
kind: LicenseService
metadata:
  name: masocp-vbpoyr
  namespace: ibm-sls-vbpoyr
  resourceVersion: '497850' 
  uid: 478dcfb9-342e-440c-b6ec-7ad74b5b78ec
spec:
  domain: ibm-sls-vbpoyr.apps.masocp-vbpoyr.buyermas4aws.com
  license:
    accept: true
  mongo:
    certificates:
      - alias: ca
        crt: |
          -----BEGIN CERTIFICATE-----
          MIIEBjCCAu6gAwIBAgIJAMc0ZzaSUK51MA0GCSqGSIb3DQEBCwUAMIGPMQswCQYD
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          -----END CERTIFICATE-----  
    configDb: admin
    nodes:
      - host: docdb-vbpoyr.ctnrnscupeqf.ca-central-1.docdb.amazonaws.com
        port: 27017
    retryWrites: false
    secretName: documentdb-admin
  reloadCrd:
    fileUpload: -336090572
  settings:
    auth:
      enforce: true
    compliance:
      enforce: true
    registration:
      open: true
    registry: cp.icr.io/cp

Save the LicenseService YAML file.
Verify whether the same status conditions are shown for DocumentDB.

In the api-licensing pod that is located in ibm-sls project > namespace, verify that the new connection with DocumentDB is established.
Confirm whether the reconciliation is successful.
If a message Licensing system has not been initialized, upload a valid entitlement file to enable the Token pool and License Mgmt APIs is shown, upload the entitlement file again.
1. Confirm that the api-licensing pod is running with a ready status.
2. To initialize the licensing system, download the entitlement file. On the Red Hat OpenShift console, from the side navigation menu, select Workloads > Secrets, select IBM-ls-project, search for ibm-sls-masocp-<<unique string>>-entitlement, save, and download the entitlement file.
3. In the Maximo Application Suite Setup page, in the Settings section, the license key checkmark is disabled.
4. Click Replace license file and upload the file that was downloaded in the previous step.
  After the upload is successful, the license key checkmark is enabled.
5. Confirm the LicenseService details are reinitialized.
6. After the MongoCfg and LicenseServiceCfg are configured successfully, verify that the following two collections in the new DocumentDB instance are created.
  - ibm-sls-<<unique_cluster_string>>_masocp-<<unique_cluster_string>>_licensing specific to Maximo Application Suite core.
    For example, ibm-sls-vbpoyr_masocp-vbpoyr_licensing.
  - mas_<<unique_cluster_string>>_core specific to Suite License Service (SLS).
    For example, mas_vbpoyr_core.
  The SLS-specific token pools and products collection are also created in the new DocumentDB instance that confirms that the DocumentDB was successfully connected to SLS.
7. Create an admin user and confirm that the user is shown in the Maximo Application Suite core and Suite License Service collections.
  Note: On the Maximo Application Suite Configurations page, in Storage section, select MongoDB to view the configured database details. You cannot update the MongoDB settings on the details page.
  
  To create an administrator user, add details, such as the display name, user ID, and password. Select Authorized for the access type and add entitlements.
  
  The new user is visible in the Users section of mas_<<cluster_unique_string>>_core DocumentDB, which confirms that Maximo Application Suite core is connected with DocumentDB.
  
  The new user, who is an admin user, is added to the mas_<<cluster_unique_string>>_core DocumentDB collection.

Delete the existing MongoDB instance by using CLI.

The following example is a sample script to delete the MongoDB instance.

# Login to cluster
oc login --token=sha256~xxx --server=https://api.masocp-xupgew.domain.com:6443
# Switch to mongo namespace
oc project ${MONGO_NAMESPACE}

# Note down Certificate resource name
oc get Certificate -n ${MONGO_NAMESPACE}
# Note down StatefulSet name
oc get StatefulSet -n ${MONGO_NAMESPACE}
# Note down mongodbcommunity crd detail
oc get  CustomResourceDefinition mongodbcommunity.mongodbcommunity.mongodb.com -n ${MONGO_NAMESPACE}
# Note down pvc name
oc get pvc -n ${MONGO_NAMESPACE} | grep mongo

# Delete Certificate
oc delete Certificate mongo-ca-crt -n ${MONGO_NAMESPACE}
oc delete Certificate mongo-server -n ${MONGO_NAMESPACE} 

# Delete MongoDBCommunity
oc delete MongoDBCommunity mas-mongo-ce -n ${MONGO_NAMESPACE}
# Delete MongoDB operator
oc delete deployment mongodb-kubernetes-operator  -n ${MONGO_NAMESPACE}
# Delete MongoDB StatefulSet
oc delete StatefulSet mas-mongo-ce
# Delete MongoDB StatefulSet
oc delete CustomResourceDefinition mongodbcommunity.mongodbcommunity.mongodb.com -n ${MONGO_NAMESPACE}

# Delete Mongo secrets
oc delete secrets --all -n ${MONGO_NAMESPACE}
# Delete Mongo configmaps
oc delete configmaps --all -n ${MONGO_NAMESPACE} 
# Delete Mongo pvc
oc delete pvc  data-volume-mas-mongo-ce-0 -n ${MONGO_NAMESPACE}
oc delete pvc  data-volume-mas-mongo-ce-1 -n ${MONGO_NAMESPACE}
oc delete pvc  data-volume-mas-mongo-ce-2 -n ${MONGO_NAMESPACE}
oc delete pvc  logs-volume-mas-mongo-ce-0 -n ${MONGO_NAMESPACE}
oc delete pvc  logs-volume-mas-mongo-ce-1 -n ${MONGO_NAMESPACE}
oc delete pvc  logs-volume-mas-mongo-ce-2 -n ${MONGO_NAMESPACE}
# Delete Mongo project
oc delete project ${MONGO_NAMESPACE}

Extracting Root CA RSA2048 PEM files

If you see a connection error, you can run the following commands to manually add new CA certificates to your trust stores, and update your existing Amazon DocumentDB instances to use the new CA certificates.

Run the wget command to download the .pem file for your region.
For example run the command to download the .pem file for Canada (Central) region.
```
wget https://truststore.pki.rds.amazonaws.com/ca-central-1/ca-central-1-bundle.pem
```

Split the certificate from the certificate names into separate files.

For example run the following command.

cat ca-central-1-bundle.pem lawk 'split_after==1{n++;split_after=0}
/-----END CERTIFICATE-----/ 
{split_after=1} {print > "temp-ca-central-1" n "pem"}'

Search the files that contain the term Root CA RSA2048.
```
for cert in $(Is temp-*.pem); do echo $cert; cat $cert | openss| x509 -noout -text | grep "Root CA RSA2048 G1"; done
```
Files that contain the term are listed in the output.
Copy the file that is required to root-ca-rsa2048 for your region.
```
cp temp-ca-central-13.pem .../root-ca-rsa2048-ca-central-1.pem
```

Verify that the correct .pem files are copied.

for cert in $(Is root-ca-rsa2048-*pem); do echo $cert; cat $cert | openssl x509 -noout -text | grep "Root CA RSA2048 G1"; done

Replace the spec.certificates.crt and spec.mongo.certificates.crt parameters with the certificate content from the new PEM file.