Welcome to the Microsoft Q&A and thank you for posting your questions here
It seems like you're having trouble creating an HDInsight cluster despite having a sufficient regional quota for vCPUs.
There could be several reasons for this issue.
Firstly, it's essential to check if you have enough quota for the specific VM size you're trying to use. You can check the available quota for each VM size in the Azure portal.
Additionally, ensure that you have the necessary permissions to create HDInsight clusters. You should have the HDInsight Cluster Operator
or Contributor
role assigned to your Azure account.
If you've verified the quota and permissions, try creating the cluster using Azure CLI or PowerShell.
Here's an example of how to create an HDInsight cluster using Azure CLI:
az hdinsight create --name <cluster_name> --resource-group <resource_group> --location <location> --cluster-type <cluster_type> --component-version <component_version> --headnode-size <headnode_size> --workernode-size <workernode_size> --worker-node-count <worker_node_count>
Replace the placeholders with your desired values.
If you're still facing issues, please do let us know.