CODEWITHSUNDEEP
google-cloud-platformgrpcgoogle-cloud-rungoogle-cloud-internal-load-balancer
August
August

Reputation: 41

Do GCP Internal Load Balancers support gRPC with Serverless Negs

I am running a number of Cloud Run services which all have VPC access via a VPC connector and setting all egress to run through this connector. I have an ILB set up which points to a Regional Backend Service with Serverless Network Endpoint Group type. When you select this type you are unable to choose the protocol for the service (HTTP, HTTPS, HTTP/2)

The receiving Cloud Run is set to ingress unauthenticated and to allow internal/cloud-load-balancing.

When my client tries to send messages to my server via an address that resolves to the ILB it fails with a very non-descript error: rpc error: code = Unknown desc =.

I have tried using the direct cloud run url as opposed to going via my ILB and this does work. I would prefer to use my internal DNS though if possible.

Upvotes: 1

Views: 672

Answers (1)

Robson Lunardelli
Robson Lunardelli

Reputation: 1

The rpc error: code = Unknown desc = is indicative of the ILB encountering difficulty in routing the traffic. Ensure that your routing rules include an additional host entry specifying your domain:port.

Upvotes: 0

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