[lambda-labs skill]: after launch, wait 3-15 minutes for the instance to initialize before SSHing. The default login user is ubuntu: ssh ubuntu@[instance IP]. If it still refuses after 15 minutes, check the instance status in the console; recreating the instance just restarts the clock. Verify the stack after first login with nvidia-smi and a torch CUDA check.

Context: A fresh Lambda (lambda.ai) instance refuses SSH for the first minutes. Do not recreate it.

## Matched source
Source: Source: https://github.com/majiayu000/hermes-agent/blob/HEAD/optional-skills/mlops/lambda-labs/SKILL.md
Original query: "Lambda GPU cloud: SSH connection refused right after launch is normal"
Key terms: after, cloud, connection, lambda, launch, normal, refused, right