Migrating from Pterodactyl (Dockerized)

This guide is for Pterodactyl installs running in Docker. If you have a docker-compose.yml with a Pterodactyl service, you're in the right place. If Pterodactyl runs directly on the host without containers, use the Standalone guide instead.

This guide assumes Pterodactyl's standard Docker compose setup, but it also works for Blueprint's Docker compose variant. Variable names and locations are mostly the same.

The import works the same way regardless of how Pterodactyl is running: you point the Calagopus importer at a .env file with Pterodactyl's database connection details, and it reads everything across. The Docker-specific part is that you'll usually need to build that .env file yourself, since database hostnames inside Docker networks don't match what's in Pterodactyl's original .env.

API keys do not migrate. The hashes aren't compatible, and neither is the API, so old keys wouldn't work even if they were imported. See the intro for the full reasoning.

Prerequisites

Before you start, you'll want:

• Access to your Dockerized Pterodactyl install (the directory with the compose file and .env).
• Calagopus Panel installed but not yet configured. Stop at the Out-of-Box Experience (OOBE) screen.

Install Calagopus First

If you haven't installed Calagopus yet, follow the installation guide. Once you reach the OOBE screen, stop. Don't click through it, don't create the admin user. Just leave it there and come back here.

Don't click through the OOBE

The importer needs an empty Calagopus database to write into. The OOBE creates initial records (admin user, default settings) that would conflict with what the importer is trying to do.

Already clicked through? Here's how to undo it

You'll need to drop and recreate the database. Pick the tab that matches how Calagopus is installed:

Go to the directory with your Calagopus compose file and stop the stack:

docker compose down

Delete the Postgres data directory:

# This wipes the Calagopus database. Don't run this if you have data you care about.
rm -r postgres

Start Calagopus back up:

docker compose up -d

Set the Pterodactyl Directory

Most commands below reference your Pterodactyl install directory. Set it as a shell variable up front to save typing. If your Pterodactyl host mount is at /srv/pterodactyl, this is fine as-is, otherwise change the path:

export PTERODACTYL_DIRECTORY=/srv/pterodactyl

This isn't required, you can substitute the path inline anywhere you see $PTERODACTYL_DIRECTORY. It just makes the commands shorter.

Choose Your Calagopus Install Method

The exact commands depend on how Calagopus itself is installed. Pick the matching tab:

Building the Pterodactyl .env File

Pterodactyl's database is reachable from inside the Pterodactyl containers, but likely not from your Calagopus containers, since different Docker networks use different hostnames. The fix is to build a small ptero.env file with database connection details that work from where the importer runs.

The importer needs all seven of these variables: APP_URL, APP_KEY, DB_HOST, DB_PORT, DB_DATABASE, DB_USERNAME, and DB_PASSWORD. You'll find them across Pterodactyl's docker-compose.yml and .env file. A finished ptero.env looks something like:

APP_URL=https://panel.example.com
APP_KEY=xc5QXq4u3Qgi3zRP0Q9qq32mnZvl0lVY
DB_HOST=172.20.0.4
DB_PORT=3306
DB_DATABASE=panel
DB_USERNAME=pterodactyl
DB_PASSWORD=mZCcs8KInMWexDRe704T6C8swXmbP8W2M+kCpbnQuv4=

Assemble the values one at a time using the steps below.

APP_URL

Your existing Pterodactyl domain, from Pterodactyl's docker-compose.yml or .env:

APP_URL=https://panel.example.com

APP_KEY

From Pterodactyl's .env:

cat $PTERODACTYL_DIRECTORY/var/.env | grep APP_KEY

Looks like:

APP_KEY=xc5QXq4u3Qgi3zRP0Q9qq32mnZvl0lVY

DB_HOST

Pterodactyl's .env probably has DB_HOST=database, a Docker service name that won't resolve from outside Pterodactyl's compose stack. Get the actual container IP instead, running this from inside Pterodactyl's directory:

# Linux/MacOS
echo "DB_HOST=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $(docker compose ps -q database))"

# Windows
echo "DB_HOST=$($(docker compose ps -q database) | foreach { docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' $_ })"

Looks like:

DB_HOST=172.29.0.4

DB_PORT, DB_DATABASE, DB_USERNAME

If you haven't modified the default Pterodactyl compose file, these are all defaults:

DB_PORT=3306
DB_DATABASE=panel
DB_USERNAME=pterodactyl

If you've customized them, check Pterodactyl's .env for the actual values.

DB_PASSWORD

In Pterodactyl's docker-compose.yml or .env, look for MARIADB_USER_PASS. Copy its value and use it as DB_PASSWORD:

# In Pterodactyl's compose file:
MARIADB_USER_PASS=mZCcs8KInMWexDRe704T6C8swXmbP8W2M+kCpbnQuv4=

# Becomes in your ptero.env:
DB_PASSWORD=mZCcs8KInMWexDRe704T6C8swXmbP8W2M+kCpbnQuv4=

Assembling the File

Go to the Calagopus directory (where your compose.yml lives) and create a file called ptero.env with all seven variables.

Running the Import

Copy the ptero.env you just made into the Calagopus container:

docker compose cp ptero.env web:/.env

Run the importer:

docker compose exec web calagopus-panel import pterodactyl --environment /.env

This walks through users, servers, nodes, allocations, eggs, and everything else. Small installs finish in seconds, larger ones take longer. Progress is logged to stdout.

If the import errors out

Treat the database as poisoned. A partial import leaves Calagopus in an inconsistent state. Drop the Postgres data (steps in the OOBE warning above), let Calagopus recreate it empty, and re-run the import.

When the import finishes, restart the stack:

docker compose down
docker compose up -d

Log in with your existing Pterodactyl credentials.

What's Next

Wings also needs to point at the new panel. See Updating Wings for that step.

After migrating, regenerate any API keys used by external scripts. The old Pterodactyl keys won't work, and the Calagopus API differs from Pterodactyl's, so those integrations need updating regardless.