URGENT: Fix broken SSH/auth on mighty-automations droplet (64.225.34.155)

[kjkaustin]

Problem

SSH authentication system is broken on mighty-automations (n8n hosting) after SSH user configuration changes.

Status

• ✅ Droplet is reachable (ping works)
• ✅ n8n is running and accessible (HTTP on port 5678)
• ✅ Accessible via https://n8n.mightyandtrue.com/
• ❌ SSH port 22 not listening in normal mode
• ❌ Normal console auth fails ('All configured authentication methods failed')
• ✅ Recovery mode console works

Root Cause

SSH service runs in recovery mode but does NOT start in normal mode. Happened after deleting root user and creating kevin user during SSH setup procedure.

Error Messages

• SSH: 'Operation timed out' on port 22 in normal mode
• Console: 'All configured authentication methods failed'

Troubleshooting Completed

• Unbanned IPv6 from fail2ban ✅
• Restarted SSH in recovery mode ✅
• Verified SSH config (port 22, PermitRootLogin=no) ✅
• Verified kevin user SSH key exists ✅
• Confirmed SSH service shows 'active (running)' in recovery mode ✅
• Tested HTTP connectivity - n8n responds ✅

Data Safety

• All n8n data stored in Supabase ✅

Next Steps

• Contact DigitalOcean support
• Reference: SSH service active in recovery mode but not starting in normal mode
• Or rebuild if unsalvageable