====== Coolify Uses Docker Network Gateway as Host IP ======

**Affects:** [[folkzone:services:coolify|Coolify]]

===== Fact =====

From inside a Docker container, the correct IP to reach the host machine is the Docker network **gateway**, not the server's LAN IP or ''host.docker.internal''.

For the ''cafe'' stack:

  * ✅ Correct: ''172.18.0.1'' (Docker network gateway)
  * ❌ Wrong: ''192.168.1.65'' (LAN IP — SSH connects but Coolify validation fails)
  * ❌ Wrong: ''host.docker.internal'' (not reliably available on all Docker setups)

===== How to find the gateway =====

<code bash>
docker network inspect cafe_cafe_net | grep Gateway
</code>

===== Fixing it in the Coolify database =====

<code bash>
docker exec coolify-db psql -U coolify -d coolify \
  -c "UPDATE servers SET ip = '172.18.0.1' WHERE name = 'localhost';"
</code>

===== See Also =====
  * [[folkzone:troubleshooting:start|Homelab Troubleshooting Index]]

  * [[folkzone:troubleshooting:coolify_ssh_setup|Coolify SSH Key Setup]]
  * [[folkzone:services:coolify|Coolify]]
  * [[start|Return to wiki home]]