## TL;DR

The default login user is ubuntu: ssh ubuntu@[instance IP]. After launch, wait 3-15 minutes for the instance to initialize before SSHing.

## Fix

1. The default login user is ubuntu: ssh ubuntu@[instance IP].
   Expected: You get the expected result; the problem is gone.

## When to use

- You are setting up or using this Lambda GPU cloud feature.
- The symptom matches: SSH connection refused right after launch is normal.

## When NOT to use

- Unrelated Lambda GPU cloud issues (different feature, different failure).
- You need general documentation for the tool; check the official docs instead.

## Compatibility

Reported against Lambda GPU cloud. Source: https://github.com/majiayu000/hermes-agent/blob/HEAD/optional-skills/mlops/lambda-labs/SKILL.md.

## Variant phrasings

### SSH connection refused right after launch is normal

## Why it happens

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

## Edge cases

- If your error message differs even slightly, this is probably a different issue; search the exact text.
- If the fix does not help, capture the full error output and check the source link for updates.

## Source

https://github.com/majiayu000/hermes-agent/blob/HEAD/optional-skills/mlops/lambda-labs/SKILL.md