echo6-docs/vault/runbooks/expose-service-contabo.md

title	type	tags	aliases	related	updated
Expose Service on Contabo	runbook	dns		expose-service-edge2 expose-service-home lxc-service-migration caddy services	2026-08-24

Expose Service on Contabo

SUPERSEDED — Contabo was decommissioned 2026-06-19. Use expose-service-edge2 (services) or expose-service-contabo→edge1 for mail. This doc is kept for history only.

Prerequisites

• Service running in Docker on Contabo
• Port bound to 127.0.0.1 only (never 0.0.0.0)

Steps

1. Deploy the service

ssh root@100.64.0.6
mkdir -p /opt/<service>
# Create docker-compose.yml with port bound to 127.0.0.1:<port>
docker compose up -d

2. Add DNS record

# On cortex — godaddy-dns.py lives at ~/bin/godaddy-dns.py there and reads
# credentials from .ref/credentials itself
godaddy-dns.py add-a echo6.co <service> 5.189.158.149
dig +short <service>.echo6.co @8.8.8.8  # Verify

See dns for the record-set trap and full subcommand list.

3. Add Caddy site block

ssh root@100.64.0.6
nano /etc/caddy/Caddyfile

# Add:
# <service>.echo6.co {
#     reverse_proxy 127.0.0.1:<port>
# }

caddy validate --config /etc/caddy/Caddyfile
systemctl reload caddy

4. Add dnsmasq split DNS entry

ssh root@100.64.0.6
nano /etc/dnsmasq.d/tailscale-dns.conf

# Add:
# address=/<service>.echo6.co/100.64.0.6

systemctl restart dnsmasq

5. Verify

# Public
curl -I https://<service>.echo6.co

# Tailscale
dig +short <service>.echo6.co @100.64.0.6  # Should return 100.64.0.6

6. Update docs

• Update ~/.claude/docs/infrastructure/caddy.md with new site block
• Update ~/.claude/docs/infrastructure/services.md with new service
• Add credentials to /home/zvx/projects/.ref/credentials if applicable

Checklist

□ Docker container running, port on 127.0.0.1 only
□ GoDaddy DNS → 5.189.158.149
□ Caddy site block added and reloaded
□ dnsmasq entry added and restarted
□ Public access verified
□ Tailscale access verified
□ Docs updated