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| # Set the VM, image, and networking configuration | |
| VM_NAME="langflow-dev" | |
| IMAGE_FAMILY="debian-11" | |
| IMAGE_PROJECT="debian-cloud" | |
| BOOT_DISK_SIZE="100GB" | |
| ZONE="us-central1-a" | |
| REGION="us-central1" | |
| VPC_NAME="default" | |
| SUBNET_NAME="default" | |
| SUBNET_RANGE="10.128.0.0/20" | |
| NAT_GATEWAY_NAME="nat-gateway" | |
| CLOUD_ROUTER_NAME="nat-client" | |
| # Set the GCP project's compute region | |
| gcloud config set compute/region $REGION | |
| # Check if the VPC exists, and create it if not | |
| vpc_exists=$(gcloud compute networks list --filter="name=$VPC_NAME" --format="value(name)") | |
| if [[ -z "$vpc_exists" ]]; then | |
| gcloud compute networks create $VPC_NAME --subnet-mode=custom | |
| fi | |
| # Check if the subnet exists, and create it if not | |
| subnet_exists=$(gcloud compute networks subnets list --filter="name=$SUBNET_NAME AND region=$REGION" --format="value(name)") | |
| if [[ -z "$subnet_exists" ]]; then | |
| gcloud compute networks subnets create $SUBNET_NAME --network=$VPC_NAME --region=$REGION --range=$SUBNET_RANGE | |
| fi | |
| # Create a firewall rule to allow TCP port 7860 for all instances in the VPC | |
| firewall_7860_exists=$(gcloud compute firewall-rules list --filter="name=allow-tcp-7860" --format="value(name)") | |
| if [[ -z "$firewall_7860_exists" ]]; then | |
| gcloud compute firewall-rules create allow-tcp-7860 --network $VPC_NAME --allow tcp:7860 --source-ranges 0.0.0.0/0 --direction INGRESS | |
| fi | |
| # Create a firewall rule to allow IAP traffic | |
| firewall_iap_exists=$(gcloud compute firewall-rules list --filter="name=allow-iap" --format="value(name)") | |
| if [[ -z "$firewall_iap_exists" ]]; then | |
| gcloud compute firewall-rules create allow-iap --network $VPC_NAME --allow tcp:80,tcp:443,tcp:22,tcp:3389 --source-ranges 35.235.240.0/20 --direction INGRESS | |
| fi | |
| # Define the startup script as a multiline Bash here-doc | |
| STARTUP_SCRIPT=$(cat <<'EOF' | |
| #!/bin/bash | |
| # Update and upgrade the system | |
| apt -y update | |
| apt -y upgrade | |
| # Install Python 3 pip, Langflow, and Nginx | |
| apt -y install python3-pip | |
| pip3 install pip -U | |
| apt -y update | |
| pip3 install langflow | |
| langflow run --host 0.0.0.0 --port 7860 | |
| EOF | |
| ) | |
| # Create a temporary file to store the startup script | |
| tempfile=$(mktemp) | |
| echo "$STARTUP_SCRIPT" > $tempfile | |
| # Create the VM instance with the specified configuration and startup script | |
| gcloud compute instances create $VM_NAME \ | |
| --image-family $IMAGE_FAMILY \ | |
| --image-project $IMAGE_PROJECT \ | |
| --boot-disk-size $BOOT_DISK_SIZE \ | |
| --machine-type=n1-standard-4 \ | |
| --metadata-from-file startup-script=$tempfile \ | |
| --zone $ZONE \ | |
| --network $VPC_NAME \ | |
| --subnet $SUBNET_NAME | |
| # Remove the temporary file after the VM is created | |
| rm $tempfile | |