updated README.md

HariSekhon · HariSekhon · commit 8c0b902fee0e · 2020-10-22T11:32:40.000+01:00
diff --git a/gcp_cloud_function_sql_export/README.md b/gcp_cloud_function_sql_export/README.md
@@ -17,10 +17,34 @@ Upload the function to GCF in the current GCP project - this script will call `g
 ./deploy.sh
 ```
 
+or use the [Serverless](https://www.serverless.com/) framework for which a `serverless.yml` config is provided:
+
+```
+serverless deploy
+```
+
+If this is your first time using Serverless then you'll need to install the GCP plugin:
+
+```
+serverless plugin install --name serverless-google-cloudfunctions
+```
+
+The `serverless.yml` config expects to find `$GOOGLE_PROJECT_ID` and `$GOOGLE_REGION` environment variables.
+
+Serverless requires additional permissions for the service account: Deployment Manager Editor and Storage Admin to create deployments and staging buckets.
+
+You can also build a serverless artifact to `.serverless/` without deploying it (generates Google [Deployment Manager](https://cloud.google.com/deployment-manager) templates and a zip file - useful to check what would be uploaded / ignored):
+
+```
+serverless package
+```
+
 ### Solution Dependencies
 
 - a [Cloud PubSub](https://cloud.google.com/pubsub) topic
 - [Cloud Scheduler](https://cloud.google.com/scheduler) jobs to trigger backups
   - see `gcp_cloud_schedule_sql_exports.sh` in [DevOps Bash tools](https://github.com/HariSekhon/DevOps-Bash-tools/) repo
-- a service account with permissions to access [Cloud SQL](https://cloud.google.com/sql) and the [GCS](https://cloud.google.com/storage) bucket
-  - see `gcp_sql_exports_create_service_account.sh` in [DevOps Bash tools](https://github.com/HariSekhon/DevOps-Bash-tools/) repo
+- a service account with permissions to access [Cloud SQL](https://cloud.google.com/sql)
+  - see `gcp_sql_create_readonly_service_account.sh` in [DevOps Bash tools](https://github.com/HariSekhon/DevOps-Bash-tools/) repo
+- each [Cloud SQL](https://cloud.google.com/sql) instance to be backed up requires objectCreator permissions to the [GCS](https://cloud.google.com/storage) bucket
+  - see `gcp_sql_grant_instances_gcs_object_creator.sh` in [DevOps Bash tools](https://github.com/HariSekhon/DevOps-Bash-tools/) repo
