Configurations to connect with a redis instance

[ankit-pradhan]

Hi Team,

I want to access the redis instance running in the same google project via cloud function. For this I set egress flag to all however the cloud function requires an connector configuration. Is there a way I can connect with my redis instance without one. 

Error: ERROR: (gcloud.functions.deploy) Missing required argument [vpc-connector]: Flag `--vpc-connector` is required for setting `--egress-settings`.

Redis Config:

Authorized networkdefault {xyz-My Network for other services outside project}

Connection modePrivate service access

Can Please also share a specific example via which I can configure my vpc-connector setting if needed, thanks!!

[christianpaula]

Hi @ankit-pradhan,

Welcome to Google Cloud Community!

Connecting your Cloud Function to a Redis instance within the same project requires a VPC connector due to private access restrictions. You can choose between two options:

1. Configure a VPC Connector:

• Create a VPC connector and specify its name during Cloud Function deployment using the --vpc-connector flag.
• Keep egress settings as "all" as the connector directs traffic through the authorized VPC network.

2. Modify Redis Connection Mode (less secure):

• Change connection mode to "Direct peering" in the Memorystore for Redis interface.
• This grants access to all authorized networks in your project, bypassing the VPC connector.

Remember, security considerations favor using a VPC connector for controlled access.

Documentation Reference:

Connecting to a Redis instance from Cloud Functions:

• Official documentation
• Serverless VPC Access
• Error message explanation

VPC connector configuration:

• Creating a VPC connector
• VPC settings for Cloud Functions

Redis instance connection mode:

• Modifying connection mode
• Network Security for Memorystore for Redis

[rafael-bg]

I took the same error, even send the flag:
`gcloud functions deploy hello_world --runtime python310 --vpc-connector <my-connector-name> --egress-settings private-ranges-only --ingress-settings internal-only --trigger-http
` 
and the error persists: Flag `--vpc-connector` is required for setting `egress-settings`.