The Trac Configuration File

Trac configuration is done by editing the trac.ini config file, located in <projectenv>/conf/trac.ini.

Global Configuration

Since version 0.9, Trac can also read the configuration from a global trac.ini file. These global options will then be merged with the environment-specific options, where local options override global options.

The global configuration is by default located in $prefix/share/trac/conf/trac.ini. It can be moved to a different location (for example, /etc/trac.ini), but that requires changing the file trac/ which gets created when Trac is installed.


This is a brief reference of available configuration options.

Note: since [milestone:0.10], the TracIni reference is auto-generated from the source code, using the TracIniMacro?. But in this page, we will keep the old wiki content, so that documentation fixes could be easily contributed by the community, as before.


base_url Base URL of the Trac deployment.
In most configurations, Trac will automatically reconstruct the URL that is used to access it automatically. However, in more complex setups, usually involving running Trac behind a HTTP proxy, you may need to use this option to force Trac to use the correct URL.
database Database connection string for this project
default_charset Charset used in text files in the subversion repository (default is iso-8859-15)
default_handler Name of the component that handles requests to the base URL (default is WikiModule. Some other options are TimelineModule, RoadmapModule, BrowserModule, QueryModule, ReportModule and NewticketModule) (since 0.9)
repository_dir Path to local Subversion repository
authz_file Path to Subversion authorization (authz) file.
authz_module_name The module prefix used in the authz_file (See FineGrainedPermissions)
check_auth_ip Whether the IP address of the user should be checked for authentication (true, false) (since 0.9)
ignore_auth_case Whether case should be ignored for login names (true, false) (since 0.9)
templates_dir Path to the ClearSilver templates
htdocs_location Path to the static resources (default is /trac)
metanav The order of the sections displayed in the meta nav bar, adding or removing section in this list is done with trac's permission system
mainnav The order of the sections displayed in the main nav bar


tab_width deprecated since 0.9 in favor of the tab_width option in the [mimeviewer] section


name Project name
descr Short project description
url URL to the main project website
icon URL to icon file to use as shortcut icon (favicon)
footer Page footer text (right-aligned)
src URL to image to use as header logo
link Destination URL to link to from header logo
alt alt text for header logo
width Header logo width in pixels
height Header logo height in pixels

See also: TracInterfaceCustomization.


log_type Logging facility to use. (none, file, stderr, syslog, winlog)
log_file If log_type is file, this should be a path to the log-file
log_level Level of verbosity in log (CRITICAL, ERROR, WARN, INFO, DEBUG)

See also: TracLogging


max_size Maximum allowed file size for ticket and wiki attachments
render_unsafe_content Whether non-binary attachments should be rendered in the browser, or only made downloadable. Pretty much any text file may be interpreted as HTML by the browser, which allows a malicious user to attach a file containing cross-site scripting attacks. For public sites where anonymous users can create attachments, it is recommended to leave this option off (which is the default).


smtp_enabled Enable SMTP (email) notification (true, false)
smtp_server SMTP server hostname to use for email notifications (default: localhost)
smtp_port SMTP server port to use for email notifications (default: 25)
smtp_user Username for SMTP server (since 0.9)
smtp_password Password for SMTP server (since 0.9)
smtp_from Sender address to use in notification emails
smtp_replyto Reply-To address to use in notification emails
smtp_default_domain Append the specified domain to addresses that do not contain one (since 0.10)
smtp_always_cc Email address(es) to always send notifications to
smtp_always_bcc Email address(es) to always send notifications to, but keep addresses not visible from other recipients (since 0.10)
use_public_cc Recipients can see email addresses of other CC'ed recipients (since 0.10)
use_short_addr Send username/login as is to the SMTP server (since 0.10)
always_notify_reporter Always send notifications to any address in the reporter field
always_notify_owner Always send notifications to the ticket owner (since 0.9)
always_notify_updater The updater of a ticket receives a notification of his own changes (since 0.10)
mime_encoding Specify the MIME encoding scheme for emails (since 0.10)

See also: TracNotification


enscript_path Path to the Enscript program
php_path Path to the PHP program
max_preview_size Maximum file size for HTML preview (since 0.9)
tab_width Displayed tab width in file preview (since 0.9)


default_version Default version for newly created tickets
default_severity Default severity for newly created tickets
default_priority Default priority for newly created tickets
default_milestone Default milestone for newly created tickets
default_component Default component for newly created tickets
default_type Default type for newly created tickets
restrict_owner Make the owner field of tickets use a drop-down menu (since 0.9). See AssignToAsDropDownList


Creates user-defined ticket fields.


default_daysback Default "depth" of the Timeline, in days (since 0.9)
changeset_show_files Number of files to show (-1 for unlimited, 0 to disable)
ticket_show_details Enable the display of all ticket changes in the timeline (since 0.9?)


hide_properties List of subversion properties to hide from the repository browser (since 0.9)


ignore_missing_pages enable/disable highlighting CamelCase links to missing pages (since 0.9)


(since 0.9)

This section is used to enable or disable components provided by plugins, as well as by Trac itself. The component to enable/disable is specified via the name of the option. Whether its enabled is determined by the option value; setting the value to enabled or on will enable the component, any other value (typically disabled or off) will disable the component.

The option name is either the fully qualified name of the components or the module/package prefix of the component. The former enables/disables a specific component, while the latter enables/disables any component in the specified package/module.

Consider the following configuration snippet:

[components] = disabled
webadmin.* = enabled

The first option tells Trac to disable the report module. The second option instructs Trac to enable all components in the webadmin package. Note that the trailing wildcard is required for module/package matching. To get a list of active components for your installation, see the Plugins page on About Trac (requires CONFIG_VIEW permissions.)

See also: TracPlugins

See also: TracGuide, TracAdmin, TracEnvironment