Version 1 (modified by trac, 9 years ago) (diff)

The Trac Configuration File

[Note To Editors] Please discuss documentation changes in the #Discussion section. Even better, send us documentation patches? against the code (i.e. where the configuration entries are documented), either on Trac-dev or on new tickets.

Trac configuration is done by editing the trac.ini config file, located in <projectenv>/conf/trac.ini. Changes to the configuration are usually reflected immediately, though changes to the [components] or [logging] sections will require restarting the web server. You may also need to restart the web server after creating a global configuration file when none was previously present.

The trac.ini configuration file and its parent directory should be writable by the web server, as Trac currently relies on the possibility to trigger a complete environment reload to flush its caches.

Global Configuration

In versions prior to 0.11, the global configuration was by default located in $prefix/share/trac/conf/trac.ini or /etc/trac/trac.ini, depending on the distribution. If you're upgrading, you may want to specify that file to inherit from. Literally, when you're upgrading to 0.11, you have to add an [inherit] section to your project's trac.ini file. Additionally, you have to move your customized templates and common images from $prefix/share/trac/... to the new location.

Global options will be merged with the environment-specific options, where local options override global options. The options file is specified as follows:

file = /path/to/global/trac.ini

Multiple files can be specified using a comma-separated list.

Note that you can also specify a global option file when creating a new project, by adding the option --inherit=/path/to/global/trac.ini to trac-admin's initenv command. If you do not do this but nevertheless intend to use a global option file with your new environment, you will have to go through the newly generated conf/trac.ini file and delete the entries that will otherwise override those set in the global file.

There are two more entries in the [inherit] section, templates_dir for sharing global templates and plugins_dir, for sharing plugins. Those entries can themselves be specified in the shared configuration file, and in fact, configuration files can even be chained if you specify another [inherit] file there.

Note that the templates found in the templates/ directory of the TracEnvironment have precedence over those found in [inherit] templates_dir. In turn, the latter have precedence over the installed templates, so be careful about what you put there, notably if you override a default template be sure to refresh your modifications when you upgrade to a new version of Trac (the preferred way to perform TracInterfaceCustomization being still to write a custom plugin doing an appropriate ITemplateStreamFilter transformation).

Reference for settings

This is a brief reference of available configuration options, and their default settings.


account_changes_notify_addressesList of email addresses that get notified of user changes, ie, new user, password change and delete user.(no default)
allow_delete_accountAllow users to delete their own account.enabled
auth_initLaunch an initial Trac authentication setup.enabled
authentication_urlURL of the HTTP authentication service(no default)
cookie_refresh_pctPersistent sessions randomly get a new session cookie ID with likelihood in percent per work hour given here (zero equals to never) to decrease vulnerability of long-lasting sessions.10
db_htdigest_realmRealm to select relevant htdigest db entries(no default)
db_htpasswd_hash_typeDefault hash type of new/updated passwordscrypt
email_regexpA validation regular expression describing new account emails. Define constraints for a valid email address. A custom pattern can narrow or widen scope i.e. to accept UTF-8 characters.(?i)^[A-Z0-9._%+-]+@(?:[A-Z0-9-]+\.)+[A-Z0-9-]{2,63}$
environ_auth_overwriteWhether environment variable REMOTE_USER should get overwritten after processing login form input. Otherwise it will only be set, if unset at the time of authentication.enabled
force_passwd_changeForce the user to change password when it's reset.enabled
generated_password_lengthLength of the randomly-generated passwords created when resetting the password for an account.8
hash_methodIPasswordHashMethod used to create new/updated passwordsHtDigestHashMethod
htdigest_filePath relative to Trac environment or full host machine path to password file(no default)
htdigest_realmRealm to select relevant htdigest file entries(no default)
htpasswd_filePath relative to Trac environment or full host machine path to password file(no default)
htpasswd_hash_typeDefault hash type of new/updated passwordscrypt
login_attempt_max_countLock user account after specified number of login attempts. Value zero means no limit.0
login_opt_listSet to True, to switch login page style showing alternative actions in a single listing together.disabled
notify_actionsComma separated list of actions to notify of. Available actions 'new', 'change', 'delete'.
password_storeOrdered list of password stores, queried in turn.(no default)
persistent_sessionsAllow the user to be remembered across sessions without needing to re-authenticate. This is, user checks a "Remember Me" checkbox and, next time he visits the site, he'll be remembered.disabled
refresh_passwdRe-set passwords on successful authentication. This is most useful to move users to a new password store or enforce new store configuration (i.e. changed hash type), but should be disabled/unset otherwise.disabled
register_basic_questionA question to ask instead of the standard prompt, to which the value of register_basic_token is the answer. Setting to empty string (default value) keeps the standard prompt.(no default)
register_basic_tokenA string required as input to pass verification.(no default)
register_checkOrdered list of IAccountRegistrationInspector's to use for registration checks.BasicCheck, EmailCheck, BotTrapCheck, RegExpCheck, UsernamePermCheck
require_approvalWhether account registration requires administrative approval to enable the account or not.disabled
reset_passwordSet to False, if there is no email system setup.enabled
user_lock_max_timeLimit user account lock time to specified time (seconds). This is relevant only with user_lock_time_progression > 1.86400
user_lock_timeDrop user account lock after specified time (seconds). Value zero means unlimited lock time.0
user_lock_time_progressionExtend user account lock time incrementally. This is based on logarithmic calculation and decimal numbers accepted: Value '1' means constant lock time per failed login attempt. Value '2' means double locktime after 2nd lock activation, four times the initial locktime after 3rd, and so on.1
username_char_blacklistAlways exclude some special characters from usernames. This is enforced upon new user registration.:[]
username_regexpA validation regular expression describing new usernames. Define constraints for allowed user names corresponding to local naming policy.(?i)^[A-Z0-9.\-_]{5,}$
verify_emailVerify the email address of Trac users.enabled


max_sizeMaximum allowed file size (in bytes) for attachments.262144
max_zip_sizeMaximum allowed total size (in bytes) for an attachment list to be downloadable as a .zip. Set this to -1 to disable download as .zip. (since 1.0)2097152
render_unsafe_contentWhether attachments should be rendered in the browser, or only made downloadable. Pretty much any 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 disabled (which is the default).false


color_scaleEnable colorization of the age column. This uses the same color scale as the source code annotation: blue is older, red is newer. (since 0.11)enabled
downloadable_pathsList of repository paths that can be downloaded. Leave this option empty if you want to disable all downloads, otherwise set it to a comma-separated list of authorized paths (those paths are glob patterns, i.e. "*" can be used as a wild card). In a multi-repository environment, the path must be qualified with the repository name if the path does not point to the default repository (e.g. /reponame/trunk). Note that a simple prefix matching is performed on the paths, so aliases won't get automatically resolved. (since 0.10)/trunk, /branches/*, /tags/*
hide_propertiesComma-separated list of version control properties to hide from the repository browser. (since 0.9)svk:merge
intermediate_color(r,g,b) color triple to use for the color corresponding to the intermediate color, if two linear interpolations are used for the color scale (see intermediate_point). If not set, the intermediate color between oldest_color and newest_color will be used. (since 0.11)(no default)
intermediate_pointIf set to a value between 0 and 1 (exclusive), this will be the point chosen to set the intermediate_color for interpolating the color value. (since 0.11)(no default)
newest_color(r,g,b) color triple to use for the color corresponding to the newest color, for the color scale used in blame or the browser age column if color_scale is enabled. (since 0.11)(255, 136, 136)
oldest_color(r,g,b) color triple to use for the color corresponding to the oldest color, for the color scale used in blame or the browser age column if color_scale is enabled. (since 0.11)(136, 136, 255)
oneliner_propertiesComma-separated list of version control properties to render as oneliner wiki content in the repository browser. (since 0.11)trac:summary
render_unsafe_contentWhether raw files should be rendered in the browser, or only made downloadable. Pretty much any file may be interpreted as HTML by the browser, which allows a malicious user to create a file containing cross-site scripting attacks. For open repositories where anyone can check-in a file, it is recommended to leave this option disabled (which is the default).false
wiki_propertiesComma-separated list of version control properties to render as wiki content in the repository browser. (since 0.11)trac:description


max_diff_bytesMaximum total size in bytes of the modified files (their old size plus their new size) for which the changeset view will attempt to show the diffs inlined (since 0.10).10000000
max_diff_filesMaximum number of modified files for which the changeset view will attempt to show the diffs inlined (since 0.10).0
wiki_format_messagesWhether wiki formatting should be applied to changeset messages. If this option is disabled, changeset messages will be rendered as pre-formatted text.true


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 view the list of active components, go to the Plugins page on About Trac (requires CONFIG_VIEW permissions).

See also: TracPlugins


altAlternative text for the header logo.(please configure the [header_logo] section in trac.ini)
heightHeight of the header logo image in pixels.-1
linkURL to link to, from the header logo.(no default)
srcURL of the image to use as header logo. It can be absolute, server relative or relative. If relative, it is relative to one of the /chrome locations: site/your-logo.png if your-logo.png is located in the htdocs folder within your TracEnvironment; common/your-logo.png if your-logo.png is located in the folder mapped to the htdocs_location URL. Only specifying your-logo.png is equivalent to the
widthWidth of the header logo image in pixels.-1


htdocs_dirPath to the shared htdocs directory. Static resources in that directory are mapped to /chrome/shared under the environment URL, in addition to common and site locations. This can be useful in site.html for common interface customization of multiple Trac environments. (since 1.0)(no default)
plugins_dirPath to the shared plugins directory. Plugins in that directory are loaded in addition to those in the directory of the environment plugins, with this one taking precedence. (since 0.11)(no default)
templates_dirPath to the shared templates directory. Templates in that directory are loaded in addition to those in the environments templates directory, but the latter take precedence. (since 0.11)(no default)


This section configures InterTrac prefixes. Options in this section whose name contain a "." define aspects of the InterTrac prefix corresponding to the option name up to the ".". Options whose name don't contain a "." define an alias.

The .url is mandatory and is used for locating the other Trac. This can be a relative URL in case that Trac environment is located on the same server.

The .title information is used for providing a useful tooltip when moving the cursor over an InterTrac link.

The .compat option can be used to activate or disable a compatibility mode:

  • If the targeted Trac is running a version below 0.10 (r3526 to be precise), then it doesn't know how to dispatch an InterTrac link, and it's up to the local Trac to prepare the correct link. Not all links will work that way, but the most common do. This is called the compatibility mode, and is false by default.
  • If you know that the remote Trac knows how to dispatch InterTrac links, you can explicitly disable this compatibility mode and then any TracLinks can become InterTrac links.

Example configuration:

# -- Example of setting up an alias:
t = trac

# -- Link to an external Trac:
trac.title = Edgewall's Trac for Trac
trac.url =


Every option in the [interwiki] section defines one InterWiki prefix. The option name defines the prefix. The option value defines the URL, optionally followed by a description separated from the URL by whitespace. Parametric URLs are supported as well.


MeatBall =
PEP =$1.html Python Enhancement Proposal $1
tsvn = tsvn: Interact with TortoiseSvn


log_fileIf log_type is file, this should be a path to the log-file. Relative paths are resolved relative to the log directory of the environment.trac.log
log_formatCustom logging format. If nothing is set, the following will be used: Trac[$(module)s] $(levelname)s: $(message)s In addition to regular key names supported by the Python logger library (see, one could use: - $(path)s the path for the current environment - $(basename)s the last path component of the current environment - $(project)s the project name Note the usage of $(...)s instead of %(...)s as the latter form would be interpreted by the ConfigParser? itself. Example: ($(thread)d) Trac[$(basename)s:$(module)s] $(levelname)s: $(message)s (since 0.10.5)(no default)
log_levelLevel of verbosity in log. Should be one of (CRITICAL, ERROR, WARN, INFO, DEBUG).DEBUG
log_typeLogging facility to use. Should be one of (none, file, stderr, syslog, winlog).none


max_preview_sizeMaximum file size for HTML preview. (since 0.9)262144
mime_mapList of additional MIME types and keyword mappings. Mappings are comma-separated, and for each MIME type, there's a colon (":") separated list of associated keywords or file extensions. (since 0.10)text/x-dylan:dylan, text/x-idl:ice, text/x-ada:ads:adb
mime_map_patternsList of additional MIME types associated to filename patterns. Mappings are comma-separated, and each mapping consists of a MIME type and a Python regexp used for matching filenames, separated by a colon (":"). (since 1.0)text/plain:README|INSTALL|COPYING.*
pygments_default_styleThe default style to use for Pygments syntax highlighting.trac
pygments_modesList of additional MIME types known by Pygments. For each, a tuple mimetype:mode:quality has to be specified, where mimetype is the MIME type, mode is the corresponding Pygments mode to be used for the conversion and quality is the quality ratio associated to this conversion. That can also be used to override the default quality ratio used by the Pygments render.(no default)
tab_widthDisplayed tab width in file preview. (since 0.9)8
treat_as_binaryComma-separated list of MIME types that should be treated as binary data. (since 0.11.5)application/octet-stream, application/pdf, application/postscript, application/msword,application/rtf,


admit_domainsComma-separated list of domains that should be considered as valid for email addresses (such as localdomain).(no default)
always_notify_ownerAlways send notifications to the ticket owner (since 0.9).false
always_notify_reporterAlways send notifications to any address in the reporter field.false
always_notify_updaterAlways send notifications to the person who causes the ticket property change and to any previous updater of that ticket.true
ambiguous_char_widthWhich width of ambiguous characters (e.g. 'single' or 'double') should be used in the table of notification mail. If 'single', the same width as characters in US-ASCII. This is expected by most users. If 'double', twice the width of US-ASCII characters. This is expected by CJK users. (since 0.12.2)single
batch_subject_templateLike ticket_subject_template but for batch modifications. By default, the template is $prefix Batch modify: $tickets_descr. (since 1.0)$prefix Batch modify: $tickets_descr
email_senderName of the component implementing IEmailSender. This component is used by the notification system to send emails. Trac currently provides SmtpEmailSender for connecting to an SMTP server, and SendmailEmailSender for running a sendmail-compatible executable. (since 0.12)SmtpEmailSender
ignore_domainsComma-separated list of domains that should not be considered part of email addresses (for usernames with Kerberos domains).(no default)
mime_encodingSpecifies the MIME encoding scheme for emails. Valid options are 'base64' for Base64 encoding, 'qp' for Quoted-Printable, and 'none' for no encoding, in which case mails will be sent as 7bit if the content is all ASCII, or 8bit otherwise. (since 0.10)none
sendmail_pathPath to the sendmail executable. The sendmail program must accept the -i and -f options. (since 0.12)sendmail
smtp_always_bccEmail address(es) to always send notifications to, addresses do not appear publicly (Bcc:). (since 0.10)(no default)
smtp_always_ccEmail address(es) to always send notifications to, addresses can be seen by all recipients (Cc:).(no default)
smtp_default_domainDefault host/domain to append to address that do not specify one.(no default)
smtp_enabledEnable email notification.false
smtp_fromSender address to use in notification emails.trac@localhost
smtp_from_authorUse the action author as the sender of notification emails. (since 1.0)false
smtp_from_nameSender name to use in notification emails.(no default)
smtp_passwordPassword for SMTP server. (since 0.9)(no default)
smtp_portSMTP server port to use for email notification.25
smtp_replytoReply-To address to use in notification emails.trac@localhost
smtp_serverSMTP server hostname to use for email notifications.localhost
smtp_subject_prefixText to prepend to subject line of notification emails. If the setting is not defined, then the [$project_name] prefix. If no prefix is desired, then specifying an empty option will disable it. (since 0.10.1)__default__
smtp_userUsername for SMTP server. (since 0.9)(no default)
ticket_subject_templateA Genshi text template snippet used to get the notification subject. By default, the subject template is $prefix #$ $summary. $prefix being the value of the smtp_subject_prefix option. (since 0.11)$prefix #$ $summary
use_public_ccRecipients can see email addresses of other CC'ed recipients. If this option is disabled (the default), recipients are put on BCC. (since 0.10)false
use_short_addrPermit email address without a host/domain (i.e. username only). The SMTP server should accept those addresses, and either append a FQDN or use local delivery. (since 0.10)false
use_tlsUse SSL/TLS to send notifications over SMTP. (since 0.10)false


adminE-Mail address of the project's administrator.(no default)
admin_trac_urlBase URL of a Trac instance where errors in this Trac should be reported. This can be an absolute or relative URL, or '.' to reference this Trac instance. An empty value will disable the reporting buttons. (since 0.11.3).
descrShort description of the project.My example project
footerPage footer text (right-aligned).Visit the Trac open source project at<br /><a href=""></a>
iconURL of the icon of the project.common/trac.ico
nameName of the project.My Project
urlURL of the main project web site, usually the website in which the base_url resides. This is used in notification e-mails.(no default)


default_anonymous_queryThe default query for anonymous users. The query is either in query language syntax, or a URL query string starting with ? as used in query: Trac links. (since 0.11.2)status!=closed&cc~=$USER
default_queryThe default query for authenticated users. The query is either in query language syntax, or a URL query string starting with ? as used in query: Trac links. (since 0.11.2)status!=closed&owner=$USER
items_per_pageNumber of tickets displayed per page in ticket queries, by default (since 0.11)100
ticketlink_queryThe base query to be used when linkifying values of ticket fields. The query is a URL query string starting with ? as used in query: Trac links. (since 0.12)?status=!closed


items_per_pageNumber of tickets displayed per page in ticket reports, by default (since 0.11)100
items_per_page_rssNumber of tickets displayed in the rss feeds for reports (since 0.11)0


default_log_limitDefault value for the limit argument in the TracRevisionLog. (since 0.11)100
graph_colorsComma-separated list of colors to use for the TracRevisionLog graph display. (since 1.0)#cc0,#0c0,#0cc,#00c,#c0c,#c00


default_disabled_filtersSpecifies which search filters should be disabled by default on the search page. This will also restrict the filters for the quick search function. The filter names defined by default components are: wiki, ticket, milestone and changeset. For plugins, look for their implementation of the ISearchSource interface, in the get_search_filters() method, the first member of returned tuple. Once disabled, search filters can still be manually enabled by the user on the search page. (since 0.12)(no default)
min_query_lengthMinimum length of query string allowed when performing a search.3


This section is used to handle all configurations used by spam filter plugin.

account_karmaBy how many points a failed registration check impacts the overall score.0
account_replace_checksReplace checks in account manager totally.false
akismet_api_keyWordpress key required to use the Akismet API.(no default)
akismet_api_urlURL of the Akismet
akismet_karmaBy how many points an Akismet reject impacts the overall karma of a submission.10
attachment_karmaThe karma given to attachments.0
attachment_sample_sizeThe maximum number of bytes from an attachment to pass through the spam filters.16384
authenticated_karmaThe karma given to authenticated users, in case trust_authenticated is false.20
badcontent_fileLocal file to be loaded to get BadContent?. Can be used in addition to BadContent? wiki page.(no default)
bayes_karmaBy what factor Bayesian spam probability score affects the overall karma of a submission.15
bayes_min_trainingThe minimum number of submissions in the training database required for the filter to start impacting the karma of submissions.25
blogspam_api_urlURL of the BlogSpam?
blogspam_karmaBy how many points an BlogSpam? reject impacts the overall karma of a submission.5
blogspam_skip_testsComma separated list of tests to skip.bayesian, linksleeve, sfs
botscout_api_keyAPI key required to use BotScout?.(no default)
botscout_karmaBy how many points a BotScout? reject impacts the overall karma of a submission.3
captchaCAPTCHA method to use for verifying humans.ExpressionCaptcha
captcha_areyouahuman_hostHost name for AreYouAHuman
captcha_areyouahuman_publisher_keyPublisher key for AreYouAHuman usage.(no default)
captcha_areyouahuman_scoring_keyScoring key for AreYouAHuman usage.(no default)
captcha_expression_ceilingMaximum value of individual terms in numeric CAPTCHA expression.10
captcha_expression_termsNumber of terms in numeric CAPTCHA expression.3
captcha_failed_karmaBy how many points a failed CAPTCHA impacts the overall score.1
captcha_image_alphabetAlphabet to choose image CAPTCHA challenge from.abcdefghkmnopqrstuvwxyz
captcha_image_font_sizeFont size to use in image CAPTCHA.25
captcha_image_fontsSet of fonts to choose from when generating image CAPTCHA.vera.ttf
captcha_image_lettersNumber of letters to use in image CAPTCHA challenge.6
captcha_karmaBy how many points a successful CAPTCHA response increases the overall score.20
captcha_karma_lifetimeTime in seconds that a successful CAPTCHA response increases karma.86400
captcha_keycaptcha_private_keyPrivate key for KeyCaptcha? usage.(no default)
captcha_keycaptcha_user_idUser id for KeyCaptcha? usage.(no default)
captcha_lifetimeTime in seconds before database cleanup is called.3600
captcha_recaptcha_private_keyPrivate key for reCaptcha usage.(no default)
captcha_recaptcha_public_keyPublic key for reCaptcha usage.(no default)
defensio_api_keyDefensio key required to use the API.(no default)
defensio_api_urlURL of the Defensio
defensio_karmaBy how many points a Defensio reject impacts the overall karma of a submission.2
extlinks_allowed_domainsList of domains that should be allowed in external,
extlinks_karmaBy how many points too many external links in a submission impact the overall score.2
fspamlist_api_keyAPI key required to use FSpamList.(no default)
fspamlist_karmaBy how many points a FSpamList reject impacts the overall karma of a submission.3
httpbl_api_keyHttp:BL API key required for use.(no default)
httpbl_spammer_karmaBy how many points listing as "comment spammer" impacts the overall karma of a submission.6
ip_blacklist_karmaBy how many points blacklisting by a single server impacts the overall karma of a submission.5
ip_blacklist_serversServers used for IP,,
ip_throttle_karmaBy how many points exceeding the configured maximum number of posts per hour impacts the overall score.3
ipbadcontent_fileLocal file to be loaded to get BadIP. Can be used in addition to BadIP wiki page.(no default)
ipregex_karmaBy how many points a match with a pattern on the BadIP page impacts the overall karma of a submission.20
is_forwardedInterpret X-Forwarded-For header for IP checks.false
linksleeve_karmaBy how many points a LinkSleeve? reject impacts the overall karma of a submission.3
logging_enabledWhether all content submissions and spam filtering activity should be logged to the database.true
max_external_linksThe maximum number of external links allowed in a submission until that submission gets negative karma.4
max_posts_by_ipThe maximum allowed number of submissions per hour from a single IP address. If this limit is exceeded, subsequent submissions get negative karma.10
min_karmaThe minimum score required for a submission to be allowed.0
purge_ageThe number of days after which log entries should be purged.7
regex_karmaBy how many points a match with a pattern on the BadContent? page impacts the overall karma of a submission.5
reject_handlerThe handler used to reject content.FilterSystem
report_pagesList of page types to add spam report linkwiki, attachment, ticket
session_karmaBy how many points an existing and configured session improves the overall karma of the submission. A third of the points is granted for having an existing session at all, the other two thirds are granted when the user has his name and/or email address set in the session, respectively.9
show_blacklistedShow the matched bad content patterns in rejection message.true
show_blacklisted_ipShow the matched bad IP patterns in rejection message.true
show_train_onlyShow the buttons for training without deleting entry.disabled
skip_externalSkip external calls when this negative karma is already reached by internal tests.20
skip_externalhamSkip external calls when this positive karma is already reached by internal tests.30
spam_monitor_entriesHow many monitor entries are displayed by default (between 5 and 10000).100
spam_report_entriesHow many report entries are displayed by default (between 5 and 10000).100
spam_user_defaultmodeDefault mode for spam user admin panel.overview
spam_user_maxageHow many days no login are considered for dead accounts.200
spam_user_minwikiHow many wiki edits are still an unused account.0
stop_externalStop external calls when this negative karma is reached.50
stop_externalhamStop external calls when this positive karma is reached.50
stopforumspam_api_keyAPI key used to report SPAM.(no default)
stopforumspam_karmaBy how many points a StopForumSpam? reject impacts the overall karma of a submission.4
train_externalAllow training of external services.true
trap_karmaBy how many points a trap reject impacts the overall karma of a submission.10
trap_nameName of the invisible trap field, should contain some reference to e-mail for better results.sfp_email
trap_name_hiddenName of the hidden trap field, should contain some reference to e-mail for better results.sfph_mail
trust_authenticatedWhether content submissions by authenticated users should be trusted without checking for potential spam or other abuse.false
use_externalAllow usage of external services.true


extensionsPaths to sqlite extensions, relative to Trac environment's directory or absolute. (since 0.12)(no default)


default_ccDefault cc: list for newly created tickets.(no default)
default_componentDefault component for newly created tickets.(no default)
default_descriptionDefault description for newly created tickets.(no default)
default_keywordsDefault keywords for newly created tickets.(no default)
default_milestoneDefault milestone for newly created tickets.(no default)
default_ownerDefault owner for newly created tickets.< default >
default_priorityDefault priority for newly created tickets.major
default_resolutionDefault resolution for resolving (closing) tickets (since 0.11).fixed
default_severityDefault severity for newly created tickets.(no default)
default_summaryDefault summary (title) for newly created tickets.(no default)
default_typeDefault type for newly created tickets (since 0.9).defect
default_versionDefault version for newly created tickets.(no default)
max_comment_sizeMaximum allowed comment size in characters. (since 0.11.2).262144
max_description_sizeMaximum allowed description size in characters. (since 0.11).262144
max_summary_sizeMaximum allowed summary size in characters. (since 1.0.2).262144
preserve_newlinesWhether Wiki formatter should respect the new lines present in the Wiki text. If set to 'default', this is equivalent to 'yes' for new environments but keeps the old behavior for upgraded environments (i.e. 'no'). (since 0.11).default
restrict_ownerMake the owner field of tickets use a drop-down menu. Be sure to understand the performance implications before activating this option. See Assign-to as Drop-Down List. Please note that e-mail addresses are not obfuscated in the resulting drop-down menu, so this option should not be used if e-mail addresses must remain protected. (since 0.9)false
workflowOrdered list of workflow controllers to use for ticket actions (since 0.11).ConfigurableTicketWorkflow


In this section, you can define additional fields for tickets. See TracTicketsCustomFields for more details.


The workflow for tickets is controlled by plugins. By default, there's only a ConfigurableTicketWorkflow component in charge. That component allows the workflow to be configured via this section in the trac.ini file. See TracWorkflow for more details.

(since 0.11)


abbreviated_messagesWhether wiki-formatted event messages should be truncated or not. This only affects the default rendering, and can be overriden by specific event providers, see their own documentation. (Since 0.11)enabled
changeset_collapse_eventsWhether consecutive changesets from the same author having exactly the same message should be presented as one event. That event will link to the range of changesets in the log view. (since 0.11)false
changeset_long_messagesWhether wiki-formatted changeset messages should be multiline or not. If this option is not specified or is false and wiki_format_messages is set to true, changeset messages will be single line only, losing some formatting (bullet points, etc).false
changeset_show_filesNumber of files to show (-1 for unlimited, 0 to disable). This can also be location, for showing the common prefix for the changed files. (since 0.11).0
default_daysbackDefault number of days displayed in the Timeline, in days. (since 0.9.)30
max_daysbackMaximum number of days (-1 for unlimited) displayable in the Timeline. (since 0.11)90
newticket_formatterWhich formatter flavor (e.g. 'html' or 'oneliner') should be used when presenting the description for new tickets. If 'oneliner', the [timeline] abbreviated_messages option applies. (since 0.11).oneliner
ticket_show_detailsEnable the display of all ticket changes in the timeline, not only open / close operations (since 0.9).false


auth_cookie_lifetimeLifetime of the authentication cookie, in seconds. This value determines how long the browser will cache authentication information, and therefore, after how much inactivity a user will have to log in again. The default value of 0 makes the cookie expire at the end of the browsing session. (since 0.12)0
auth_cookie_pathPath for the authentication cookie. Set this to the common base path of several Trac instances if you want them to share the cookie. (since 0.12)(no default)
authz_fileThe path to the Subversion authorization (authz) file. To enable authz permission checking, the AuthzSourcePolicy permission policy must be added to [trac] permission_policies.(no default)
authz_module_nameThe module prefix used in the authz_file for the default repository. If left empty, the global section is used.(no default)
auto_preview_timeoutInactivity timeout in seconds after which the automatic wiki preview triggers an update. This option can contain floating-point values. The lower the setting, the more requests will be made to the server. Set this to 0 to disable automatic preview. The default is 2.0 seconds. (since 0.12)2.0
auto_reloadAutomatically reload template files after modification.disabled
backup_dirDatabase backup locationdb
base_urlReference URL for the Trac deployment. This is the base URL that will be used when producing documents that will be used outside of the web browsing context, like for example when inserting URLs pointing to Trac resources in notification e-mails.(no default)
check_auth_ipWhether the IP address of the user should be checked for authentication (since 0.9).false
databaseDatabase connection string for this projectsqlite:db/trac.db
debug_sqlShow the SQL queries in the Trac log, at DEBUG level. (Since 0.11.5)disabled
default_charsetCharset to be used when in doubt.utf-8
default_date_formatThe date format. Valid options are 'iso8601' for selecting ISO 8601 format, or leave it empty which means the default date format will be inferred from the browser's default language. (since 1.0)(no default)
default_dateinfo_formatThe date information format. Valid options are 'relative' for displaying relative format and 'absolute' for displaying absolute format. (since 1.0)relative
default_handlerName of the component that handles requests to the base URL. Options include TimelineModule, RoadmapModule, BrowserModule, QueryModule, ReportModule, TicketModule and WikiModule. The default is WikiModule. (since 0.9)WikiModule
default_languageThe preferred language to use if no user preference has been set. (since 0.12.1)(no default)
default_timezoneThe default timezone to use(no default)
genshi_cache_sizeThe maximum number of templates that the template loader will cache in memory. The default value is 128. You may want to choose a higher value if your site uses a larger number of templates, and you have enough memory to spare, or you can reduce it if you are short on memory.128
htdocs_locationBase URL for serving the core static resources below /chrome/common/. It can be left empty, and Trac will simply serve those resources itself. Advanced users can use this together with trac-admin ... deploy <deploydir> to allow serving the static resources for Trac directly from the web server. Note however that this only applies to the <deploydir>/htdocs/common directory, the other deployed resources (i.e. those from plugins) will not be made available this way and additional rewrite rules will be needed in the web server.(no default)
ignore_auth_caseWhether login names should be converted to lower case (since 0.9).false
jquery_locationLocation of the jQuery JavaScript library (version 1.7.2). An empty value loads jQuery from the copy bundled with Trac. Alternatively, jQuery could be loaded from a CDN, for example:, or (since 1.0)(no default)
jquery_ui_locationLocation of the jQuery UI JavaScript library (version 1.8.21). An empty value loads jQuery UI from the copy bundled with Trac. Alternatively, jQuery UI could be loaded from a CDN, for example: or (since 1.0)(no default)
jquery_ui_theme_locationLocation of the theme to be used with the jQuery UI JavaScript library (version 1.8.21). An empty value loads the custom Trac jQuery UI theme from the copy bundled with Trac. Alternatively, a jQuery UI theme could be loaded from a CDN, for example: or (since 1.0)(no default)
mainnavOrder of the items to display in the mainnav navigation bar, listed by IDs. See also, timeline, roadmap, browser, tickets, newticket, search
metanavOrder of the items to display in the metanav navigation bar, listed by IDs. See also TracNavigation.login, logout, prefs, help, about
mysqldump_pathLocation of mysqldump for MySQL database backupsmysqldump
never_obfuscate_mailtoNever obfuscate mailto: links explicitly written in the wiki, even if show_email_addresses is false or the user doesn't have EMAIL_VIEW permission (since 0.11.6).false
permission_policiesList of components implementing IPermissionPolicy, in the order in which they will be applied. These components manage fine-grained access control to Trac resources. Defaults to the DefaultPermissionPolicy? (pre-0.11 behavior) and LegacyAttachmentPolicy? (map ATTACHMENT_* permissions to realm specific ones)DefaultPermissionPolicy, LegacyAttachmentPolicy
permission_storeName of the component implementing IPermissionStore, which is used for managing user and group permissions.DefaultPermissionStore
pg_dump_pathLocation of pg_dump for Postgres database backupspg_dump
request_filtersOrdered list of filters to apply to all requests (since 0.10).(no default)
resizable_textareasMake <textarea> fields resizable. Requires JavaScript. (since 0.12)true
secure_cookiesRestrict cookies to HTTPS connections. When true, set the secure flag on all cookies so that they are only sent to the server on HTTPS connections. Use this if your Trac instance is only accessible through HTTPS. (since 0.11.2)disabled
show_email_addressesShow email addresses instead of usernames. If false, email addresses are obfuscated for users that don't have EMAIL_VIEW permission. (since 0.11)false
show_ip_addressesShow IP addresses for resource edits (e.g. wiki). Since 1.0.5 this option is deprecated and will be removed in 1.3.1. (since 0.11.3)false
timeoutTimeout value for database connection, in seconds. Use '0' to specify no timeout. (Since 0.11)20
use_base_url_for_redirectOptionally use [trac] base_url for redirects. In some configurations, usually involving running Trac behind a HTTP proxy, Trac can't automatically reconstruct the URL that is used to access it. You may need to use this option to force Trac to use the base_url setting also for redirects. This introduces the obvious limitation that this environment will only be usable when accessible from that URL, as redirects are frequently used. (since 0.10.5)disabled
use_xsendfileWhen true, send a X-Sendfile header and no content when sending files from the filesystem, so that the web server handles the content. This requires a web server that knows how to handle such a header, like Apache with mod_xsendfile or lighttpd. (since 1.0)false
wiki_toolbarsAdd a simple toolbar on top of Wiki <textarea>s. (since 1.0.2)true


allowed_repository_dir_prefixesComma-separated list of allowed prefixes for repository directories when adding and editing repositories in the repository admin panel. If the list is empty, all repository directories are allowed. (since 0.12.1)(no default)


ignore_missing_pagesEnable/disable highlighting CamelCase links to missing pages (since 0.9).false
max_sizeMaximum allowed wiki page size in characters. (since 0.11.2)262144
render_unsafe_contentEnable/disable the use of unsafe HTML tags such as <script> or <embed> with the HTML WikiProcessor (since 0.10.4). For public sites where anonymous users can edit the wiki it is recommended to leave this option disabled (which is the default).false
safe_schemesList of URI schemes considered "safe", that will be rendered as external links even if [wiki] render_unsafe_content is false. (since 0.11.8)cvs, file, ftp, git, irc, http, https, news, sftp, smb, ssh, svn, svn+ssh
split_page_namesEnable/disable splitting the WikiPageNames with space characters (since 0.10).false


done_phrasesAnalogous to FIXME-phrases, but presentation is less eye-catching.DONE, DEBUGGED, FIXED, REVIEWED
fixme_phrasesA list of attentional phrases or single words, separated by comma (,) that will be highlighted to catch attention. Any delimiter ():<> adjacent to a phrase will not be presented. (i.e. do not include any of these delimiters in this list). This makes it possible to naturally write, for example, FIXME: in a wiki text, but view the phrase highlighted without the colon (:) which would not look natural. Use the ShowPhrases macro to show a list of currently defined phrases.BUG, FIXME
icon_limitTo prevent exhaustive network traffic, limit the maximum number of icons generated by the macro Icon. Set to 0 for unlimited number of icons (this will produce exhaustive network traffic—you have been warned!)32
rbox_widthWidth of right aligned boxes.300
shadowless_boxesUse shadowless boxes.false
shadowless_iconsUse shadowless icons.false
showicons_limitTo prevent exhaustive network traffic, limit the maximum number of icons generated by the macro ShowIcons. Set to 0 for unlimited number of icons (this will produce exhaustive network traffic—you have been warned!)96
todo_phrasesAnalogous to FIXME-phrases, but presentation is less eye-catching.REVIEW, TODO
wide_tocRight aligned boxes with table of contents, produced by the PageOutline macro, are either as wide as ordinary right aligned boxes (true) or narrow (false).false


The set of smileys is configurable by providing associations between icon names and wiki keywords. A default set of icons and keywords is defined, which can be revoked one-by-one (_remove) or all at once (_remove_defaults).


_remove_defaults = true
_remove = :-( :(
smiley = :-) :)
smiley-wink = ;-) ;)
clock = (CLOCK) (TIME)
calendar-month = (CALENDAR) (DATE)
chart = (CHART)
document-excel = (EXCEL)
document-word = (WORD)
eye = (EYE)
new = (NEW)
tick = (TICK)

Keywords are space-separated!

A smiley can also be removed by associating its icon with nothing:

smiley =

Use the ShowSmileys macro to find out the current set of icons and keywords.

_removeSpace-separated(!) list of keywords that shall not be interpreted as smileys (even if defined in this section).(no default)
_remove_defaultsSet to true to remove all default smileys.disabled


The set of symbols is configurable by providing associations between symbols and wiki keywords. A default set of symbols and keywords is defined, which can be revoked one-by-one (_remove) or all at once (_remove_defaults).


_remove_defaults = true
_remove = <- ->
&laquo; = <<
&raquo; = >>
&sum; = (SUM)
&hearts; = <3

Keywords are space-separated!

A symbol can also be removed by associating it with no keyword:

&larr; =

Use the ShowSymbols macro to find out the current set of symbols and keywords.

_removeSpace-separated(!) list of keywords that shall not be interpreted as symbols (even if defined in this section).(no default)
_remove_defaultsSet to true to remove all default symbols.disabled

See also: TracGuide, TracAdmin, TracEnvironment