Step 4: Create service accounts

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This step explains how to create the Google Cloud service accounts that are required for Apigee hybrid to operate.

Overview

Apigee hybrid uses Google Cloud service accounts to allow hybrid components to communicate by making authorized API calls.

Production vs. non-production environments

This guide refers to Production ("Prod") and Non-production ("Non-prod") installations. A production installation is tuned for greater usage capacity, storage, and scalability. A non-production installation uses fewer resources and is mainly for learning and demonstration purposes.

When you create and configure service accounts for Apigee hybrid, it is important to be aware of the type of installation you are targeting.

For production installations, we recommend creating a separate service account for each Apigee hybrid component. For example, runtime, mart, metrics, udca, and so on each get their own service account.

For non-prod installations, you can create a single service account that applies to all the components.

To learn more about the service accounts used by Apigee and the roles they are assigned, see Service accounts and roles used by hybrid components.

Workload Identity on GKE

For Apigee hybrid installations on GKE, Google Cloud offers an option called workload identity to authenticate hybrid runtime components. This option does not use downloaded certificate files to authenticate the service accounts, Instead, it associates the Google Cloud service accounts that you create in this step with Kubernetes service accounts in the Kubernetes cluster.

Workload Identity is only available on GKE installations.

Create the service accounts

Use the following procedures to create the Google Cloud service accounts for your hybrid installation:

• The create-service-account tool: If you are installing Apigee hybrid on a platform other than GKE, or if you are installing on GKE but do not want to use workload identity, Use the Apigee provided tool, create-service-account, to create the service accounts, assign the roles to the service accounts, and create and download the key files for the service account in a single command. Follow the procedures in
  Create service accounts using create-service-account.
• Google Cloud Console or gcloud: If you are installing Apigee hybrid on GKE and plan to use workload identity, use the Google Cloud Console or gcloud to create the service accounts without downloading the certificate files. Follow the procedures in
  Create service accounts in the Google Cloud Console or with gcloud.

Create service accounts using create-service-account

Use the create-service-account tool in the following circumstances:

• You are installing on a platform other than GKE
• You are installing on GKE but do not plan to use workload identity.

Otherwise, skip to Create service accounts in the Google Cloud Console or with gcloud.

1. Make sure your HYBRID_FILES and PROJECT_ID environment variables are set.

   PROJECT_ID must be set to your Google cloud project ID, because the create-service-account tool reads the PROJECT_ID environment variable to create the service accounts in the correct project.

   echo $HYBRID_FILES
   echo $PROJECT_ID

2. Create the service account with the following command:

   Non-prod

   This command creates a single service account named apigee-non-prod for use in a non-production installation and downloads the key file for the service account in the $HYBRID_FILES/service-accounts directory.

   $HYBRID_FILES/tools/create-service-account --env non-prod --dir $HYBRID_FILES/service-accounts

   Production

   This command creates all the individual service accounts for a production installation and downloads the key files for the service accounts in the $HYBRID_FILES/service-accounts directory.

   $HYBRID_FILES/tools/create-service-account --env prod --dir $HYBRID_FILES/service-accounts

   If you see the following prompt, enter y:

   [INFO]: gcloud configured project ID is project_id.
    Enter: y to proceed with creating service account in project: project_id
    Enter: n to abort.
   

   If this is the first time you are creating a particular service account, then the tool creates it without further prompts.

   If, however, you see the following message and prompt, enter y to generate new keys:

   [INFO]: Service account apigee-non-prod@project_id.iam.gserviceaccount.com already exists.
   ...
    [INFO]: The service account might have keys associated with it. It is recommended to use existing keys.
    Press: y to generate new keys.(this does not deactivate existing keys)
    Press: n to skip generating new keys.
   

   Note: The Cloud Pub/Sub API must be enabled in the Google Cloud project that owns the service account for Synchronizer. To see if you enabled this API, see Enable APIs.
3. Verify that the service account key was created using the following command. You are responsible for storing these private keys securely. The key filenames are prefixed with the name of your Google Cloud project.

   ls $HYBRID_FILES/service-accounts

   The result should look something like the following:

   project_id-apigee-non-prod.json

Tip: Apigee hybrid includes a validator that checks your service accounts' key files and permissions when apigeectl applies the Apigee hybrid runtime components to your cluster. This validation is enabled by default. For more information, see Service account validation.

• To learn more about create-service-account and all its options see, create-service-account.
• To learn about the related Google Cloud concepts, see Creating and managing service accounts and Creating and managing service account keys.

Create service accounts in the Google Cloud Console or with gcloud

If you plan to use workload identity on GKE to authenticate hybrid runtime components, you do not need to create and download certificate files for the service accounts. Therefore, do not use the create-service-account tool. Instead, create the service accounts in the Google Cloud Console or with the IAM API in gcloud.

Otherwise, skip to Create service accounts using create-service-account.

Console

Follow the instructions in Create service accounts to create the following service accounts and assign the following roles to them:

Non-prod

For non-production installations:

Service account name	IAM roles
apigee-non-prod	Apigee Analytics Agent Apigee Connect Agent Apigee Runtime Agent Apigee Synchronizer Manager Logs Writer Monitoring Metric Writer Storage Object Admin

Production

For production installations:

Production installations
Service account name	IAM roles
apigee-cassandra	Storage Object Admin
apigee-logger	Logs Writer
apigee-mart	Apigee Connect Agent
apigee-metrics	Monitoring Metric Writer
apigee-runtime	No role required
apigee-synchronizer	Apigee Synchronizer Manager
apigee-udca	Apigee Analytics Agent
apigee-watcher	Apigee Runtime Agent

gcloud

Use the following commands to create the service accounts and assign the IAM roles.

Non-prod

For non-production installations:

1. Create the apigee-non-prod service account:

   gcloud iam service-accounts create apigee-non-prod \
     --display-name="apigee-non-prod" \
     --project=$PROJECT_ID

2. Assign the IAM roles to the service account:

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/storage.objectAdmin"

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/logging.logWriter"

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigeeconnect.Agent"

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/monitoring.metricWriter"

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigee.synchronizerManager"

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigee.analyticsAgent"

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigee.runtimeAgent"

3. Verify the role bindings:

   gcloud projects get-iam-policy ${PROJECT_ID} \
     --flatten="bindings[].members" \
     --format='table(bindings.role)' \
     --filter="bindings.members:apigee-non-prod@$PROJECT_ID.iam.gserviceaccount.com"

Production

For production installations:

Use the following commands to create each service account and assign the corresponding IAM role.

1. apigee-cassandra service account:

   gcloud iam service-accounts create apigee-cassandra \
     --display-name="apigee-cassandra" \
     --project=$PROJECT_ID

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-cassandra@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/storage.objectAdmin"

2. apigee-logger service account:

   gcloud iam service-accounts create apigee-logger \
     --display-name="apigee-logger" \
     --project=$PROJECT_ID

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-logger@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/logging.logWriter"

3. apigee-mart service account:

   gcloud iam service-accounts create apigee-mart \
     --display-name="apigee-mart" \
     --project=$PROJECT_ID

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-mart@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigeeconnect.Agent"

4. apigee-metrics service account:

   gcloud iam service-accounts create apigee-metrics \
     --display-name="apigee-metrics" \
     --project=$PROJECT_ID

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-metrics@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/monitoring.metricWriter"

5. apigee-runtime service account:

   gcloud iam service-accounts create apigee-runtime \
     --display-name="apigee-runtime" \
     --project=$PROJECT_ID

6. apigee-synchronizer service account:

   gcloud iam service-accounts create apigee-synchronizer \
     --display-name="apigee-synchronizer" \
     --project=$PROJECT_ID

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-synchronizer@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigee.synchronizerManager"

7. apigee-udca service account:

   gcloud iam service-accounts create apigee-udca \
     --display-name="apigee-udca" \
     --project=$PROJECT_ID

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-udca@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigee.analyticsAgent"

8. apigee-watcher service account:

   gcloud iam service-accounts create apigee-watcher \
     --display-name="apigee-watcher" \
     --project=$PROJECT_ID

   gcloud projects add-iam-policy-binding $PROJECT_ID \
     --member="serviceAccount:apigee-watcher@$PROJECT_ID.iam.gserviceaccount.com" \
     --role="roles/apigee.runtimeAgent"

To learn more about creating service accounts with gcloud, see Create service accounts.

You now have created service accounts and assigned the roles needed by the Apigee hybrid components. Next, create the TLS certificates required by the hybrid ingress gateway.

1 2 3 4 (NEXT) Step 5: Create TLS certificates 6 7 8 9 10