Configuration¶

Every setting comes from the environment, or from an env file. Which file depends on how the installation was started:

Started with	Reads
`fluksio serve`	`env` inside the data directory (`$FLUKSIO_ENV_FILE`)
the Docker stack	`.env` beside `docker/`

Anything already exported wins over the file.

Storage¶

Variable	Default	Notes
`DATA_DIR`	`flow-data` (`~/.fluksio` via the CLI)	everything below derives from this
`DATABASE_URL`	SQLite in `DATA_DIR`	any SQLAlchemy URL
`FLOWS_DIR`	`$DATA_DIR/flows`	the git repository holding flows
`SECRETS_FILE`	`$DATA_DIR/secrets.enc`	encrypted credentials, deliberately outside the repo
`ALERTS_FILE`	`$DATA_DIR/alerts.json`	channels and rules
`PANELS_FILE`	`$DATA_DIR/panels.json`	wall-panel pairings
`OAUTH_PRIVATE_KEY_FILE`	`$DATA_DIR/oauth-key.pem`	signs agent and worker tokens
`CLOUD_CONFIG_FILE`	`$DATA_DIR/cloud.json`	the portal enrolment, if any

Set DATA_DIR and the rest follow. Set one explicitly and it wins — which is what the container images do to pin everything onto /data.

The four files that must be on persistent storage

secrets.enc, alerts.json, panels.json and oauth-key.pem are written at runtime. In a container, anything not on a volume lands in the writable layer and is lost on the next rebuild — un-pairing every screen and revoking every agent.

State¶

Variable	Default	Notes
`REDIS_HOST`	unset	without it, flow state lives in memory and does not survive a restart
`REDIS_PORT`	`6379`

Flow state is the last value of every message, node memory, and the run queue. Redis here is persistence, not a cache — run it with append-only persistence on.

Identity and access¶

Variable	Default	Notes
`SECRET_KEY`	generated	signs sessions and derives the secrets-store key
`ACCESS_TOKEN_EXPIRE_MINUTES`	`11520` (8 days)
`FIRST_SUPERUSER`	—	absent means the CLI creates one on first run
`FIRST_SUPERUSER_PASSWORD`	—	absent means one is generated and printed once
`DOMAIN`	`localhost`	what the API and OAuth issuer are built from
`FRONTEND_HOST`	`http://localhost:5173`	used in mails, OAuth metadata and panel pairing links
`BACKEND_CORS_ORIGINS`	`[]`	comma-separated; `FRONTEND_HOST` is always allowed

Rotating SECRET_KEY

The secrets store is encrypted with a key derived from it. Change it and the store stops decrypting, and every session is signed out. Re-enter your secrets, or plan the rotation properly.

Environment¶

Variable	Default	Notes
`ENVIRONMENT`	`local`	`local`, `staging` or `production`
`PRIVATE_API_ENABLED`	`false`	unauthenticated test-only endpoints; needs `ENVIRONMENT=local` too

production closes /docs, /redoc and the OpenAPI document, because the schema enumerates every endpoint the installation serves — including the paths webhook nodes mounted at runtime. It also turns a changethis secret from a warning into a refusal to start.

The engine¶

Variable	Default	Notes
`FLOW_MAX_WORKERS`	`4`	node-code subprocesses run in parallel
`FLOW_NODE_TIMEOUT`	`30.0`	seconds a node may run, unless it sets its own
`OBS_RETENTION_DAYS`	`30`	how long metrics, events and run records are kept

Agents¶

Variable	Default	Notes
`MCP_ENABLED`	`false`	opens the `/mcp` endpoint and OAuth client registration
`MCP_TOKEN_EXPIRE_MINUTES`	`60`	an agent's token is a bearer secret held by a program
`MCP_REFRESH_EXPIRE_DAYS`	`30`
`OAUTH_CODE_EXPIRE_SECONDS`	`60`

See Agents over MCP.

Mail¶

Needed for password-reset mails. Without SMTP_HOST and EMAILS_FROM_EMAIL, mail is simply off.

Variable	Default
`SMTP_HOST`	—
`SMTP_PORT`	`587`
`SMTP_USER` / `SMTP_PASSWORD`	—
`SMTP_TLS` / `SMTP_SSL`	`true` / `false`
`EMAILS_FROM_EMAIL`	—
`EMAILS_FROM_NAME`	`Fluksio`
`EMAIL_RESET_TOKEN_EXPIRE_HOURS`	`48`

Monitoring¶

Variable	Default	Notes
`SENTRY_DSN`	—	error reporting, if you want it

Health check¶

GET /api/v1/utils/health/ is a deep check: it fails when the event loop is wedged or the state backend is gone, not just when the process is up. That is what the container healthcheck probes, and what an autoheal sidecar restarts on.