SQL warehouse failing to start ( Please check network connectivity from the data plane to the control plane )

[Cano]

Hi, 

My SQL warehouse is failing to start with the following error message:

Details for the latest failure: Error: [id: InstanceId(i-01b84b6705ff09104), status: INSTANCE_INITIALIZING, workerEnvId:WorkerEnvId(workerenv-3023557811934763-c8cef827-a038-4552-a74d-829ee273d683), lastStatusChangeTime: 1673489057531, groupIdOpt Some(0),requestIdOpt Some(0112-020302-ltb2xfyq-2b759b89-28f3-42ff-b),version 2] with threshold 700 seconds timed out after 704732 milliseconds. Please check network connectivity from the data plane to the control plane. Code: BOOTSTRAP_TIMEOUT Cluster-id (internal): 0112-020302-ltb2xfyq Additional details: {"instance_id":"i-01b84b6705ff09104"}

I followed the steps here https://docs.databricks.com/administration-guide/cloud-configurations/aws/customer-managed-vpc.html#...

All the requirements for security group, subnet, NACLs, route table were met.

I even tried to create a new workspace but that also failed.

I have also attached the log file.

Your urgent help is hugely appreciated.

[Debayan]

Hi, There is a line in the attached logs as below:

[Bootstrap Event] Can reach ohio.cloud.databricks.com: [FAILED]

[Bootstrap Event] DNS output for databricks-prod-artifacts-us-east-2.s3.us-east-2.amazonaws.com: 

Server: 10.187.0.2

Address: 10.187.0.2#53

This means somehow the webapp endpoint cannot reach as per the document: https://docs.databricks.com/administration-guide/cloud-configurations/aws/customer-managed-vpc.html?...

Could you please make sure if it has been added and let us know if it helps?

[Cano]

Hi @Debayan Mukherjee​ 

Everything is managed through the security group and it allows all traffic. And there is also a NAT gateway associated to the subnet to provide internet connectivity.

I see the Databricks Instances spin up in my AWS account, is there Is anyway I can connect to these instances to a run a few tests?

I have attached a screenshot of both inbound and outbound rules for your viewing.

Please let me know if you have any other suggestions.

[Cano]

Please note that I'm not using a customer managed VPC, but a VPC that was created by Databricks when I created the workspace.

[Debayan]

Hi @charles okoh​ , Thanks for all the details. I understand it is a default VPC. In that case, could you please raise a support case with Databricks?

[Kaniz]

Hi @charles okoh​  (Customer)​ , We haven’t heard from you on the last response from @Debayan Mukherjee​​, and I was checking back to see if their suggestions helped you.

Or else, If you have any solution, please do share that with the community as it can be helpful to others.

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