The Bugzilla Guide - 2.22.3 Release
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# 2.3. Optional Additional Configuration

Bugzilla has a number of optional features. This section describes how to configure or enable them.

## 2.3.1. Bug Graphs

If you have installed the necessary Perl modules you can start collecting statistics for the nifty Bugzilla graphs.

    bash# crontab -e

This should bring up the crontab file in your editor. Add a cron entry like this to run `collectstats.pl` daily at 5 after midnight:

    5 0 * * * cd <your-bugzilla-directory> ; ./collectstats.pl

After two days have passed you'll be able to view bug graphs from the Reports page.

When upgrading Bugzilla, this format may change. To create new status data, (re)move old data and run the following commands:

            bash$
            cd <your-bugzilla-directory>
            bash$
            ./collectstats.pl --regenerate

| Windows does not have 'cron', but it does have the Task Scheduler, which performs the same duties. There are also third-party tools that can be used to implement cron, such as nncron.

## 2.3.2. Dependency Charts

As well as the text-based dependency trees, Bugzilla also supports a graphical view of dependency relationships, using a package called 'dot'. Exactly how this works is controlled by the 'webdotbase' parameter, which can have one of three values:

1. A complete file path to the command 'dot' (part of GraphViz) will generate the graphs locally

2. A URL prefix pointing to an installation of the webdot package will generate the graphs remotely

3. A blank value will disable dependency graphing.

The easiest way to get this working is to install GraphViz. If you do that, you need to enable server-side image maps in Apache. Alternatively, you could set up a webdot server, or use the AT&T public webdot server. This is the default for the webdotbase param, but it's often overloaded and slow. Note that AT&T's server won't work if Bugzilla is only accessible using HARTS. Editor's note: What the heck is HARTS? Google doesn't know...

## 2.3.3. The Whining Cron

What good are bugs if they're not annoying? To help make them more so you can set up Bugzilla's automatic whining system to complain at engineers which leave their bugs in the NEW or REOPENED state without triaging them.

This can be done by adding the following command as a daily crontab entry, in the same manner as explained above for bug graphs. This example runs it at 12.55am.

    55 0 * * * cd <your-bugzilla-directory> ; ./whineatnews.pl

| Windows does not have 'cron', but it does have the Task Scheduler, which performs the same duties. There are also third-party tools that can be used to implement cron, such as nncron.

## 2.3.4. Whining

As of Bugzilla 2.20, users can configure Bugzilla to regularly annoy them at regular intervals, by having Bugzilla execute saved searches at certain times and emailing the results to the user. This is known as "Whining". The process of configuring Whining is described in Section 5.13, but for it to work a Perl script must be executed at regular intervals.

This can be done by adding the following command as a daily crontab entry, in the same manner as explained above for bug graphs. This example runs it every 15 minutes.

    */15 * * * * cd <your-bugzilla-directory> ; ./whine.pl

| Whines can be executed as often as every 15 minutes, so if you specify longer intervals between executions of whine.pl, some users may not be whined at as often as they would expect. Depending on the person, this can either be a very Good Thing or a very Bad Thing.

| Windows does not have 'cron', but it does have the Task Scheduler, which performs the same duties. There are also third-party tools that can be used to implement cron, such as nncron.

## 2.3.5. Patch Viewer

Patch Viewer is the engine behind Bugzilla's graphical display of code patches. You can integrate this with copies of the `cvs`, `lxr` and `bonsai` tools if you have them, by giving the locations of your installation of these tools in `editparams.cgi`.

Patch Viewer also optionally will use the `cvs`, `diff` and `interdiff` command-line utilities if they exist on the system. Interdiff can be obtained from http://cyberelk.net/tim/patchutils/. If these programs are not in the system path, you can configure their locations in `localconfig`.

## 2.3.6. LDAP Authentication

LDAP authentication is a module for Bugzilla's plugin authentication architecture.

The existing authentication scheme for Bugzilla uses email addresses as the primary user ID, and a password to authenticate that user. All places within Bugzilla where you need to deal with user ID (e.g assigning a bug) use the email address. The LDAP authentication builds on top of this scheme, rather than replacing it. The initial log in is done with a username and password for the LDAP directory. This then fetches the email address from LDAP and authenticates seamlessly in the standard Bugzilla authentication scheme using this email address. If an account for this address already exists in your Bugzilla system, it will log in to that account. If no account for that email address exists, one is created at the time of login. (In this case, Bugzilla will attempt to use the "displayName" or "cn" attribute to determine the user's full name.) After authentication, all other user-related tasks are still handled by email address, not LDAP username. You still assign bugs by email address, query on users by email address, etc.

Because the Bugzilla account is not created until the first time a user logs in, a user who has not yet logged is unknown to Bugzilla. This means they cannot be used as an assignee or QA contact (default or otherwise), added to any cc list, or any other such operation. One possible workaround is the `bugzilla_ldapsync.rb` script in the `contrib` directory. Another possible solution is fixing bug 201069.

Parameters required to use LDAP Authentication:

user_verify_class

  This parameter should be set to "LDAP" only if you will be using an LDAP directory for authentication. If you set this param to "LDAP" but fail to set up the other parameters listed below you will not be able to log back in to Bugzilla one you log out. If this happens to you, you will need to manually edit `data/params` and set user_verify_class to "DB".

LDAPserver

  This parameter should be set to the name (and optionally the port) of your LDAP server. If no port is specified, it assumes the default LDAP port of 389.

  Ex. "ldap.company.com" or "ldap.company.com:3268"

LDAPbinddn [Optional]

  Some LDAP servers will not allow an anonymous bind to search the directory. If this is the case with your configuration you should set the LDAPbinddn parameter to the user account Bugzilla should use instead of the anonymous bind.

  Ex. "cn=default,cn=user:password"

LDAPBaseDN

  The LDAPBaseDN parameter should be set to the location in your LDAP tree that you would like to search for email addresses. Your uids should be unique under the DN specified here.

  Ex. "ou=People,o=Company"

LDAPuidattribute

  The LDAPuidattribute parameter should be set to the attribute which contains the unique UID of your users. The value retrieved from this attribute will be used when attempting to bind as the user to confirm their password.

  Ex. "uid"

LDAPmailattribute

  The LDAPmailattribute parameter should be the name of the attribute which contains the email address your users will enter into the Bugzilla login boxes.

  Ex. "mail"

## 2.3.7. Serving Alternate Formats with the right MIME type

Some Bugzilla pages have alternate formats, other than just plain HTML. In particular, a few Bugzilla pages can output their contents as either XUL (a special Mozilla format, that looks like a program GUI) or RDF (a type of structured XML that can be read by various programs).

In order for your users to see these pages correctly, Apache must send them with the right MIME type. To do this, add the following lines to your Apache configuration, either in the `<VirtualHost>` section for your Bugzilla, or in the `<Directory>` section for your Bugzilla:

    AddType application/vnd.mozilla.xul+xml .xul
    AddType application/rdf+xml .rdf

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