Environment Variables

Required

Variable	Description	Example
`DATABASE_URL`	PostgreSQL connection string	`postgresql://user:pass@host:5432/db`

Optional

Variable	Default	Description
`PORT`	`3000`	HTTP listen port
`URL`	`http://localhost:3000`	Panel URL (used in emails and redirects)
`NAME`	`Airlink`	Panel display name
`NODE_ENV`	`development`	`development` or `production`
`SESSION_SECRET`		Secret for session cookies (generate with `openssl rand -hex 32`)
`REDIS_URL`	`redis://127.0.0.1:6379`	Redis connection string
`DB_POOL_MAX`	`20`	Maximum database connection pool size

Database Host Defaults

These set the defaults when creating database hosts via the admin panel:

Variable	Default	Description
`PGHOST`	`127.0.0.1`	Default PostgreSQL host
`PGPORT`	`5432`	Default PostgreSQL port
`PGUSER`	`airlink`	Default PostgreSQL user
`PGPASSWORD`		Default PostgreSQL password

Example File

The example.env file contains all variables with defaults:

URL="http://localhost:3000"
PORT=3000
NAME="Airlink"
DATABASE_URL="postgresql://airlink:airlink@127.0.0.1:5432/airlink"
DB_POOL_MAX=20
REDIS_URL="redis://127.0.0.1:6379"
NODE_ENV="development"
SESSION_SECRET="change_me"
PGHOST="127.0.0.1"
PGPORT="5432"
PGUSER="airlink"
PGPASSWORD=""

Generating SESSION_SECRET

openssl rand -hex 32

Production Considerations

Use a strong, unique SESSION_SECRET
Set NODE_ENV=production
Use a proper PostgreSQL password
Use a dedicated Redis instance
Set URL to your actual panel domain
Configure SMTP for email features
Configure S3 for backup storage (optional)