talk/docs/_docs/02-01-configuration.md

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Configuration	/docs/running/configuration/

The Talk application looks for the following configuration values either as environment variables:

• TALK_MONGO_URL (required) - the database connection string for the MongoDB database.
• TALK_REDIS_URL (required) - the database connection string for the Redis database.
• TALK_ROOT_URL (required) - root url of the installed application externally available in the format: <scheme>://<host> without the path.
• TALK_JWT_SECRET (required) - a long and cryptographical secure random string which will be used to sign and verify tokens via a HS256 algorithm.
• TALK_JWT_EXPIRY (optional) - the expiry duration (exp) for the tokens issued for logged in sessions (Default 1 day)
• TALK_JWT_ISSUER (optional) - the issuer (iss) claim for login JWT tokens (Default process.env.TALK_ROOT_URL)
• TALK_JWT_AUDIENCE (optional) - the audience (aud) claim for login JWT tokens (Default talk)
• TALK_SMTP_EMAIL (required for email) - the address to send emails from using the SMTP provider.
• TALK_SMTP_USERNAME (required for email) - username of the SMTP provider you are using.
• TALK_SMTP_PASSWORD (required for email) - password for the SMTP provider you are using.
• TALK_SMTP_HOST (required for email) - SMTP host url with format smtp.domain.com.
• TALK_SMTP_PORT (required for email) - SMTP port.
• TALK_INSTALL_LOCK (optional for dynamic setup) - When TRUE, disables the dynamic setup endpoint. (Default FALSE)
• TALK_RECAPTCHA_SECRET (required for reCAPTCHA support) - server secret used for enabling reCAPTCHA powered logins. If not provided it will instead default to providing only a time based lockout.
• TALK_RECAPTCHA_PUBLIC (required for reCAPTCHA support) - client secret used for enabling reCAPTCHA powered logins. If not provided it will instead default to providing only a time based lockout.
• TALK_PLUGINS_JSON (optional) - used to specify the plugin config via the environment
• TALK_KEEP_ALIVE (optional) - The keepalive timeout that should be used to send keep alive messages through the websocket to keep the socket alive. (Default 30s)
• TALK_DISABLE_AUTOFLAG_SUSPECT_WORDS (optional) When TRUE, disables flagging of comments that match the suspect word filter. (Default FALSE)

Refer to the wiki page on Configuration Loading for alternative methods of loading configuration during development.