documentation/source/environment.html.md

title	icon	summary
Useful Environment Variables	file-text	Plume uses environment variable to configure instances. You can use them to configure the database, or the HTTP interface for instance.

Plume relies on some environment variables for some configuration options. You can either set them before starting the app with cargo run or write them in a .env file to have automatically loaded.

Basic

Here are the variables that Plume uses:

• BASE_URL: the domain name, or IP and port on which Plume is listening. It is used in all federation-related code.
• DATABASE_URL: the URL of the database used by Plume (postgres://plume:plume@localhost/plume by default with PostgreSQL, plume.db with SQlite).
• MIGRATION_DIRECTORY: The folder that stores the migration files for the database, migrations/postgres for PostgreSQL databases or migrations/sqlite for SQlite databases.
• ROCKET_ADDRESS: the address on which Plume should listen (0.0.0.0 by default).
• ROCKET_PORT: the port on which Plume should listen (7878 by default).
• ROCKET_SECRET_KEY: key used to sign private cookies and for CSRF protection. If it is not set, it will be regenerated everytime you restart Plume, meaning that all your users will get disconnected. You can generate one with openssl rand -base64 32.
• FORM_SIZE: the maximum amount of form data Plume will accept. 32768 (32MiB) by default.
• ACTIVITY_SIZE: the maximum amount of ActivityPub message data Plume will accept.
• SEARCH_INDEX: the directory where the search index will be saved (search_index by default).
• SEARCH_TAG_TOKENIZER: the tokenizer used for tags when searching. simple, ngram, whitespace and lindera are available. simple tokenizer tokenizes the text by splitting on whitespaces and punctuation. ngram tokenizes by splitting words into bigram at a minimum and 8-gram at a maximum. whitespace tokenizes by splitting on whitespaces but not on punctuation. lindera tokenizes the text by splitting into Japanese morpheme, which is available only when build with search-lindera feature. whitespace by default. Since v0.5.0.
• SEARCH_CONTENT_TOKENIZER: the tokenizer used for blog contents when searching. The same tokenizers to SEARCH_TAG_TOKENIZER are available. simple by default. Since v0.5.0.
• SEARCH_LANG: the shortcut for the combination of SEARCH_TAG_TOKENIZER and SEARCH_CONTENT_TOKENIZER. Currently supports only ja and it requires search-lindera feature on build. This is experimental and might change in the future. Since v0.5.0.
• MEDIA_UPLOAD_DIRECTORY: the directory in which to store the uploaded medias (./static/media by default). Plume won't create this directory if it doesn't exist, so make sure to create it before.
• DEFAULT_THEME: the name of the default theme. It should be the same as the name of the directory containing the theme in static/css.
• DB_MAX_SIZE: the maximum number of database connections (10 by default). Since v0.5.0.
• DB_MIN_IDLE: the minimum idle database connection count (the same to DB_MAX_SIZE by default). Since v0.5.0.
• RUST_LOG: the log level Plume outputs (info by default). You can set it for each library such as RUST_LOG=debug,html5ever=warn,hyper=warn,tantivy=warn.

Mail

The SMTP server to send mails can be configured with:

• MAIL_SERVER: the SMTP server to connect to.
• MAIL_USER: the username for authentication purposes.
• MAIL_PASSWORD: its password.
• MAIL_HELO_NAME: the name sent during EHLO/HELO.
• MAIL_ADDRESS: the address that emails will be sent from.

For the moment, Plume only sends mail when you need to reset your password (and only from the web interface, plm users reset-password doesn't send anything). If you don't plan to use this feature, you can simply remove (or comment) the lines to configure the mail server in your .env.

Logo

You can also change the logo you want to use for your instance in this file. Your logo should be in the static directory. To make Plume load it, you can use:

• PLUME_LOGO: it will change the logo in the header, the favicon, and the webmanifest (used when pinning a website to home screen on mobile phones). It is recommended to use SVG files when possible.
• PLUME_LOGO_FAVICON: that can change the favicon, if you want to use an image that is not PLUME_LOGO.
• PLUME_LOGO_size: where size is one of 48, 72, 96, 144, 160, 192, 256 or 512. It will change the icon to use in the webmanifest for the given size. You can of course specify it multiple times, with different sizes.

All the specified paths should be relative to the static directory.

Here is an example, that will make your instance use the "paragraphs" logo.

PLUME_LOGO=icons/trwnh/paragraphs/plumeParagraphs.svg
PLUME_LOGO_FAVICON=icons/trwnh/paragraphs/plumeParagraphs32.png
PLUME_LOGO_48=icons/trwnh/paragraphs/plumeParagraphs48.png
PLUME_LOGO_72=icons/trwnh/paragraphs/plumeParagraphs72.png
PLUME_LOGO_96=icons/trwnh/paragraphs/plumeParagraphs96.png
PLUME_LOGO_144=icons/trwnh/paragraphs/plumeParagraphs144.png
PLUME_LOGO_160=icons/trwnh/paragraphs/plumeParagraphs160.png
PLUME_LOGO_192=icons/trwnh/paragraphs/plumeParagraphs192.png
PLUME_LOGO_256=icons/trwnh/paragraphs/plumeParagraphs256.png
PLUME_LOGO_512=icons/trwnh/paragraphs/plumeParagraphs512.png

LDAP

Plume support delegating authentication via LDAP since v0.6.0.

• LDAP_ADDR: address of the LDAP server
• LDAP_BASE_DN: base DN used when binding, see explanation below
• LDAP_USER_NAME_ATTR: attribut with user name used when binding, see explanation below (default=cn)
• LDAP_USER_MAIL_ATTR: attribut containing the mail address of the user (default=mail)
• LDAP_TLS: connect to the LDAP server using TLS (default=false)

Plume determines what to bind using LDAP_BASE_DN, LDAP_USER_NAME_ATTR and the user name. Assuming what you need Plume to bind is username={user name},ou=users,dc=your-org, the configuration would be the following:

LDAP_BASE_DN=ou=users,dc=your-org
LDAP_USER_NAME_ATTR=username