Attaching "Serverless VPC Access connector" to "Cloud Run" via GCP cli

1) Create a subnetwork in the VPC for the Serverless VPC Access connector.

gcloud compute networks subnets create SUBNET_NAME \
   --range=10.16.8.0/28 --network=VPC_NETWORKNAME --region=us-east4

2) Create a Serverless VPC Access connector with a pre-created subnetwork.

gcloud compute networks vpc-access connectors create VPC_CONNECTER_NAME \
  --region=us-east4 \
  --subnet-project=GCP_PROJECT_NAME  \
  --subnet=SUBNET_NAME

3) Create a new Cloud Router to program a NAT gateway.

gcloud compute routers create serverless-vpc-router \
  --network=VPC_NETWORKNAME \
  --region=us-east4

4) Reserve a static IP address.

gcloud compute addresses create NAME_FOR_STATIC_IP --region=us-east4

5) Create a Cloud NAT gateway.

gcloud compute routers nats create serverless-nat \
  --router=serverless-vpc-router \
  --region=us-east4 \
  --nat-custom-subnet-ip-ranges=SUBNET_NAME \
  --nat-external-ip-pool=NAME_FOR_STATIC_IP

6) Deploy or update your Cloud Run service to use the VPC connector and route all egress traffic through it.

gcloud run deploy CLOUDRUN_SERVICE_NAME \
   --image=gcr.io/idt-dev4/i-direct-api:latest \
   --vpc-connector=VPC_CONNECTER_NAME \
   --vpc-egress=all-traffic