smom-dbis-138/docs/azure/QUOTA_ISSUE_RESOLUTION.md

VCPU Quota Issue and Resolution

Issue

Azure subscription has insufficient vCPU quota in West Europe:

• Available: 4 vCPUs
• Required (original): 52+ vCPUs
• Required (reduced): 8 vCPUs

Temporary Solution Applied

Reduced node counts and VM sizes to work within quota:

Node Counts (Reduced)

• System: 1 node (was 3)
• Validators: 1 node (was 4)
• Sentries: 1 node (was 3)
• RPC: 1 node (was 3)

VM Sizes (Reduced)

• All pools: Standard_B2s (2 vCPUs, 4GB RAM)
• Total: 8 vCPUs needed

Recommended Actions

1. Request Quota Increase

# Check current quota
az vm list-usage --location westeurope --query "[?name.value=='cores']" -o table

# Request increase via Azure Portal
# https://portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade/newsupportrequest

2. After Quota Increase

Update terraform/terraform.tfvars:

node_count = {
  system     = 3
  validators = 4
  sentries   = 3
  rpc        = 3
}

vm_size = {
  system     = "Standard_D2s_v3"
  validators = "Standard_D4s_v3"
  sentries   = "Standard_D4s_v3"
  rpc        = "Standard_D8s_v3"
}

Then apply:

cd terraform
terraform plan -out=tfplan
terraform apply tfplan

Production Considerations

• Current configuration is for testing/development only
• Production requires:
  • Minimum 4 validators for QBFT fault tolerance
  • Larger VM sizes for performance
  • Multiple regions for redundancy