nocodb/packages/noco-docs/docs/020.getting-started/050.self-hosted/020.environment-variables.md

title	description	hide_table_of_contents	tags	keywords
Environment variables	Environment Variables for NocoDB!	true	[Open Source]	[NocoDB environment variables NocoDB env variables NocoDB envs NocoDB env]

For production use cases, it is recommended to set at least:

• NC_DB
• NC_AUTH_JWT_SECRET
• NC_PUBLIC_URL
• NC_REDIS_URL

Variable	Description	If absent
NC_DB	See our example database URLs here.	A local SQLite database is created in root folder if NC_DB is not set.
NC_DB_JSON	Can be used instead of NC_DB and value should be valid knex connection JSON string.
NC_DB_JSON_FILE	Can be used instead of NC_DB and value should be a valid path to knex connection JSON file.
DATABASE_URL	Can be used instead of NC_DB and value should be a JDBC URL string.
DATABASE_URL_FILE	Can be used instead of NC_DB and value should be a valid path to a JDBC URL file.
NC_AUTH_JWT_SECRET	JWT secret used for auth and storing other secrets.	A random secret is generated.
NC_ADMIN_EMAIL	Super admin e-mail address.
NC_ADMIN_PASSWORD	Super admin password. The password should have at least 8 letters with one uppercase, one number and one special letter. Allowed special characters include $&+,:;=?@#|'.^*()%!_-".
PORT	Network port NocoDB runs on.	Defaults to 8080.
DB_QUERY_LIMIT_DEFAULT	Pagination limit.	Defaults to 25.
DB_QUERY_LIMIT_GROUP_BY_GROUP	Group per page limit.	Defaults to 10.
DB_QUERY_LIMIT_GROUP_BY_RECORD	Record per group limit.	Defaults to 10.
DB_QUERY_LIMIT_MAX	Maximum allowed pagination limit.	Defaults to 1000.
DB_QUERY_LIMIT_MIN	Minimum allowed pagination limit.	Defaults to 1.
NC_TOOL_DIR	App directory to keep metadata and app related files in.	Defaults to the current working directory. In docker, maps to /usr/app/data/ for mounting volume.
NC_PUBLIC_URL	Used for sending E-mail invitations.	Best guess from HTTP request params.
NC_JWT_EXPIRES_IN	JWT token expiry time	Defaults to 10h.
NC_CONNECT_TO_EXTERNAL_DB_DISABLED	Disable base creation on external databases.
NC_MINIMAL_DBS	Create a new SQLite file for each base. All the SQLite database files are stored in the nc_minimal_dbs folder in the current working directory. Enabling this option automatically sets NC_CONNECT_TO_EXTERNAL_DB_DISABLED, i.e. disables base creation on external databases.
NC_INVITE_ONLY_SIGNUP	Removed since version 0.99.0, and now it's recommended to use the super admin settings menu. Disable public signup and allow signup only via invitations.
NUXT_PUBLIC_NC_BACKEND_URL	Custom backend URL.	Defaults to http://localhost:8080.
NC_REQUEST_BODY_SIZE	Request body size limit	Defaults to 1048576.
NC_EXPORT_MAX_TIMEOUT	After NC_EXPORT_MAX_TIMEOUT (in milliseconds), CSV gets downloaded in batches.	Defaults to 5000 (5 seconds).
NC_DISABLE_TELE	Disable telemetry.
NC_DASHBOARD_URL	Custom dashboard URL path	Defaults to /dashboard.
NC_GOOGLE_CLIENT_ID	Google client ID to enable Google authentication.
NC_GOOGLE_CLIENT_SECRET	Google client secret to enable Google authentication.
NC_MIGRATIONS_DISABLED	Disable NocoDB migrations.
NC_MIN	Disable default splash screen (initial welcome animation) and matrix screensaver.
NC_SENTRY_DSN	Data Source Name (DSN) for Sentry monitoring.
NC_REDIS_URL	Redis URL. Example: redis://:authpassword@127.0.0.1:6380/4	Meta data is stored in memory.
NC_DISABLE_ERR_REPORT	Disable error reporting.
NC_DISABLE_CACHE	Disable cache. To be used only while debugging. If true, meta data is fetched from database instead of redis/cache.	Defaults to false.
NC_SMTP_FROM	E-mail sender address for SMTP plugin.	SMTP plugin is disabled if this variable is not set.
NC_SMTP_HOST	E-mail server hostname for SMTP plugin.	SMTP plugin is disabled if this variable is not set.
NC_SMTP_PORT	E-mail server network for SMTP plugin.	SMTP plugin is disabled if this variable is not set.
NC_SMTP_USERNAME	Username for authentication in SMTP plugin.
NC_SMTP_PASSWORD	Password for authentication in SMTP plugin.
NC_SMTP_SECURE	Enable secure authentication in SMTP plugin. Set to true to enable, any other value is treated as false.
NC_SMTP_IGNORE_TLS	Ignore TLS in SMTP plugin. Set to true to ignore TLS, any other value is treated as false. For more information, visit Nodemailer's SMTP documentation.
NC_S3_BUCKET_NAME	AWS S3 bucket name for S3 storage plugin.
NC_S3_REGION	AWS S3 region for S3 storage plugin.
NC_S3_ACCESS_KEY	AWS access key ID for S3 storage plugin.
NC_S3_ACCESS_SECRET	AWS access secret for S3 storage plugin.
NC_ATTACHMENT_FIELD_SIZE	Maximum file size for attachments in bytes.	Defaults to 20971520 (20 MiB).
NC_MAX_ATTACHMENTS_ALLOWED	Maximum number of attachments per cell.	Defaults to 10.
NC_SECURE_ATTACHMENTS	Allow accessing attachments only through pre-signed URLs. Set to true to enable, any other value is treated as false. (⚠ this will make existing links inaccessible ⚠)	Defaults to false.
NC_ATTACHMENT_EXPIRE_SECONDS	Number of seconds after which pre-signed attachment URLs will begin to expire. The URLs will expire after NC_ATTACHMENT_EXPIRE_SECONDS plus 10 minutes at the very latest.	Defaults to 7200 (2 hours).
NC_DISABLE_AUDIT	Disable audit log.	Defaults to false.
NC_AUTOMATION_LOG_LEVEL	Possible Values: OFF, ERROR, ALL. See Webhooks for details.	Defaults to OFF.
NC_ALLOW_LOCAL_HOOKS	⚠ Allow webhooks to call local links, which can raise security issues. ⚠ Set to true to enable, any other value is treated as false	Defaults to false.
NC_SANITIZE_COLUMN_NAME	Sanitize the column name during column creation. Set to true to enable, any other value is treated as false	Defaults to true.
NODE_OPTIONS	Node.js options to pass to instance.
LITESTREAM_S3_ENDPOINT	URL of an S3-compatible object storage service endpoint for Litestream replication of NocoDB's default SQLite database. Example: s3.eu-central-1.amazonaws.com	Litestream replication is disabled if this variable is not set.
LITESTREAM_S3_BUCKET	Name of the object storage bucket to store the Litestream replication in.	Litestream replication is disabled if this variable is not set.
LITESTREAM_S3_PATH	Directory path to use within the Litestream replication object storage bucket.	Defaults to nocodb.
LITESTREAM_S3_ACCESS_KEY_ID	Authentication key ID for the Litestream replication object storage bucket.	Litestream replication is disabled if this variable is not set.
LITESTREAM_S3_SECRET_ACCESS_KEY	Authentication secret for the Litestream replication object storage bucket.	Litestream replication is disabled if this variable is not set.
LITESTREAM_S3_SKIP_VERIFY	Whether to disable TLS verification for the Litestream replication object storage service. This is useful when testing against a local node such as MinIO and you are using self-signed certificates.	Defaults to false.
LITESTREAM_RETENTION	Amount of time Litestream snapshot and WAL files are kept. After the retention period, a new snapshot is created and the old one is removed. WAL files that exist before the oldest snapshot will also be removed.	Defaults to 1440h (60 days).
LITESTREAM_RETENTION_CHECK_INTERVAL	Frequency in which Litestream will check if retention needs to be enforced.	Defaults to 72h (3 days).
LITESTREAM_SNAPSHOT_INTERVAL	Frequency in which new Litestream snapshots are created. A higher frequency reduces the time to restore since newer snapshots will have fewer WAL frames to apply. Retention still applies to these snapshots.	Defaults to 24h (1 day).
LITESTREAM_SYNC_INTERVAL	Frequency in which frames are pushed to the Litestream replica. Increasing this frequency can increase object storage costs significantly.	Defaults to 60s (1 minute).