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Add guideline to create interal ALB for private networking (#1229)
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| title: Create internal Application Load Balancer for internal connections in backend | ||
| description: '' | ||
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| # Create internal Application Load Balancer for connections between Cloud Run services in private networking | ||
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| This guide will walk you through setting up an internal ALB to connect Cloud Run services (backend to pusher) internally inside VPC network. | ||
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| ## Create new VPC and subnet with Private Google Access is on | ||
| Choose VPC Network > VPC Networks > Create VPC Network | ||
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| - VPC name: omi-dev-vpc-1 | ||
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| - Subnet: | ||
| - Name: omi-us-central1-dev-vpc-1-subnet-1 | ||
| - Network: 172.16.16.0/20 | ||
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| Create Reserved proxy-only subnets for load balancing | ||
| - Name: pusher-lb-subnet-dev | ||
| - Network: 172.16.32.0/20 | ||
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| Make sure Private Google Access option is on | ||
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| ## Create internal Application Load Balancer | ||
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| Choose Network services > Load Balancing > Create Load Balancer | ||
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| - Type: Application Load Balancer (HTTP/HTTPS) | ||
| - Internal | ||
| - Best for regional workloads | ||
| - LB name: pusher-lb-dev | ||
| - Network: omi-dev-vpc-1 | ||
| - Backend configuration: | ||
| - Name: pusher-service-dev | ||
| - Backend type: CloudRun | ||
| - Serverless network endpoint group: pusher-ep-group-dev | ||
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| - Frontend configuration: | ||
| - Name: pusher-ep-dev | ||
| - Protocol: HTTP | ||
| - New Frontend IP and port | ||
| - IP address: Ephemeral (Custom) - 172.16.16.250 | ||
| - Service label: internal-alb | ||
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| Get internal ALB DNS name for later use | ||
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| ## Change network config for pusher and backend in Cloud Run | ||
| - pusher: | ||
| - Cloud Run > pusher > Networking > Ingress Control: Internal and Allow traffic from external Application Load Balancers | ||
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| - backend: | ||
| - Cloud Run > backend > Edit and deploy new revision | ||
| - Networking: | ||
| Choose Connect to a VPC for outbound traffic | ||
| - Send traffic directly to a VPC | ||
| - Route only requests to private IPs to the VPC | ||
| - Variable and servers: | ||
| - HOSTED_PUSHER_API_URL: internal ALB DNS name | ||
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