langflow-ai/langflow

Set these on your host before deploying. Each platform has an “Environment Variables” section in the deploy flow. (showing first 20, more exist in .env.example)

• LANGFLOW_CONFIG_DIR Config directory Directory where files, logs and database will be stored Example: LANGFLOW_CONFIG_DIR=~/.langflow
• LANGFLOW_SAVE_DB_IN_CONFIG_DIR Save database in the config directory Values: true, false If false, the database will be saved in Langflow's root directory This means that…
• LANGFLOW_DATABASE_URL secret Database URL Postgres example: LANGFLOW_DATABASE_URL=postgresql://postgres:postgres@localhost:5432/langflow # pragma: allowlist secret…
• LANGFLOW_ALEMBIC_LOG_TO_STDOUT Alembic logs path flag. If set to true, Alembic will log to stdout.
• LANGFLOW_DATABASE_CONNECTION_RETRY Database connection retry Values: true, false If true, the database will retry to connect to the database if it fails Example:…
• LANGFLOW_LANGCHAIN_CACHE Cache type
• LANGFLOW_HOST Server host Example: LANGFLOW_HOST=localhost
• LANGFLOW_WORKERS Worker processes Example: LANGFLOW_WORKERS=1
• LANGFLOW_PORT Server port Example: LANGFLOW_PORT=7860
• LANGFLOW_LOG_LEVEL Logging level Example: LANGFLOW_LOG_LEVEL=critical
• LANGFLOW_LOG_FILE Path to the log file Example: LANGFLOW_LOG_FILE=logs/langflow.log
• LANGFLOW_LOG_ROTATION Time/Size for log to rotate Example: LANGFLOW_LOG_ROTATION=‘10 MB’/‘1 day’
• LANGFLOW_FRONTEND_PATH Path to the frontend directory containing build files Example: LANGFLOW_FRONTEND_PATH=/path/to/frontend/build/files
• LANGFLOW_OPEN_BROWSER Whether to open the browser after starting the server Values: true, false Example: LANGFLOW_OPEN_BROWSER=true
• LANGFLOW_REMOVE_API_KEYS secret Whether to remove API keys from the projects saved in the database Values: true, false Example: LANGFLOW_REMOVE_API_KEYS=false
• LANGFLOW_CACHE_TYPE Whether to use RedisCache or ThreadingInMemoryCache or AsyncInMemoryCache Values: async, memory, redis Example: LANGFLOW_CACHE_TYPE=memory…
• LANGFLOW_AUTO_LOGIN Set LANGFLOW_AUTO_LOGIN to false if you want to disable auto login and use the login form to login. LANGFLOW_SUPERUSER and…
• LANGFLOW_ENABLE_SUPERUSER_CLI SET LANGFLOW_ENABLE_SUPERUSER_CLI to false to disable superuser creation via the CLI
• LANGFLOW_SUPERUSER Superuser username Example: LANGFLOW_SUPERUSER=admin
• LANGFLOW_SUPERUSER_PASSWORD secret Superuser password Example: LANGFLOW_SUPERUSER_PASSWORD=123456