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-<!-- <!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"> -->
-<!-- $Id: troubleshooting.xml,v 1.13 2007/07/24 18:22:02 timeless%mozdev.org Exp $ -->
-
-<appendix id="troubleshooting">
-<title>Troubleshooting</title>
-
- <para>This section gives solutions to common Bugzilla installation
- problems. If none of the section headings seems to match your
- problem, read the general advice.
- </para>
-
- <section id="general-advice">
- <title>General Advice</title>
- <para>If you can't get <filename>checksetup.pl</filename> to run to
- completion, it normally explains what's wrong and how to fix it.
- If you can't work it out, or if it's being uncommunicative, post
- the errors in the
- <ulink url="news://news.mozilla.org/mozilla.support.bugzilla">mozilla.support.bugzilla</ulink>
- newsgroup.
- </para>
-
- <para>If you have made it all the way through
- <xref linkend="installation"/> (Installation) and
- <xref linkend="configuration"/> (Configuration) but accessing the Bugzilla
- URL doesn't work, the first thing to do is to check your web server error
- log. For Apache, this is often located at
- <filename>/etc/logs/httpd/error_log</filename>. The error messages
- you see may be self-explanatory enough to enable you to diagnose and
- fix the problem. If not, see below for some commonly-encountered
- errors. If that doesn't help, post the errors to the newsgroup.
- </para>
-
- <para>
- Bugzilla can also log all user-based errors (and many code-based errors)
- that occur, without polluting the web server's error log. To enable
- Bugzilla error logging, create a file that Bugzilla can write to, named
- <filename>errorlog</filename>, in the Bugzilla <filename>data</filename>
- directory. Errors will be logged as they occur, and will include the type
- of the error, the IP address and username (if available) of the user who
- triggered the error, and the values of all environment variables; if a
- form was being submitted, the data in the form will also be included.
- To disable error logging, delete or rename the
- <filename>errorlog</filename> file.
- </para>
- </section>
-
- <section id="trbl-testserver">
- <title>The Apache web server is not serving Bugzilla pages</title>
- <para>After you have run <command>checksetup.pl</command> twice,
- run <command>testserver.pl http://yoursite.yourdomain/yoururl</command>
- to confirm that your web server is configured properly for
- Bugzilla.
- </para>
- <programlisting>
-<prompt>bash$</prompt> ./testserver.pl http://landfill.bugzilla.org/bugzilla-tip
-TEST-OK Webserver is running under group id in $webservergroup.
-TEST-OK Got ant picture.
-TEST-OK Webserver is executing CGIs.
-TEST-OK Webserver is preventing fetch of http://landfill.bugzilla.org/bugzilla-tip/localconfig.
-</programlisting>
- </section>
-
- <section id="trbl-perlmodule">
- <title>I installed a Perl module, but
- <filename>checksetup.pl</filename> claims it's not installed!</title>
-
- <para>This could be caused by one of two things:</para>
- <orderedlist>
- <listitem>
- <para>You have two versions of Perl on your machine. You are installing
- modules into one, and Bugzilla is using the other. Rerun the CPAN
- commands (or manual compile) using the full path to Perl from the
- top of <filename>checksetup.pl</filename>. This will make sure you
- are installing the modules in the right place.
- </para>
- </listitem>
- <listitem>
- <para>The permissions on your library directories are set incorrectly.
- They must, at the very least, be readable by the web server user or
- group. It is recommended that they be world readable.
- </para>
- </listitem>
- </orderedlist>
- </section>
-
- <section id="trbl-dbdSponge">
- <title>DBD::Sponge::db prepare failed</title>
-
- <para>The following error message may appear due to a bug in DBD::mysql
- (over which the Bugzilla team have no control):
- </para>
-
-<programlisting><![CDATA[ DBD::Sponge::db prepare failed: Cannot determine NUM_OF_FIELDS at D:/Perl/site/lib/DBD/mysql.pm line 248.
- SV = NULL(0x0) at 0x20fc444
- REFCNT = 1
- FLAGS = (PADBUSY,PADMY)
-]]></programlisting>
-
- <para>To fix this, go to
- <filename>&lt;path-to-perl&gt;/lib/DBD/sponge.pm</filename>
- in your Perl installation and replace
- </para>
-
-<programlisting><![CDATA[ my $numFields;
- if ($attribs->{'NUM_OF_FIELDS'}) {
- $numFields = $attribs->{'NUM_OF_FIELDS'};
- } elsif ($attribs->{'NAME'}) {
- $numFields = @{$attribs->{NAME}};
-]]></programlisting>
-
- <para>with</para>
-
-<programlisting><![CDATA[ my $numFields;
- if ($attribs->{'NUM_OF_FIELDS'}) {
- $numFields = $attribs->{'NUM_OF_FIELDS'};
- } elsif ($attribs->{'NAMES'}) {
- $numFields = @{$attribs->{NAMES}};
-]]></programlisting>
-
- <para>(note the S added to NAME.)</para>
- </section>
-
- <section id="paranoid-security">
- <title>cannot chdir(/var/spool/mqueue)</title>
-
- <para>If you are installing Bugzilla on SuSE Linux, or some other
- distributions with <quote>paranoid</quote> security options, it is
- possible that the checksetup.pl script may fail with the error:
-<programlisting><![CDATA[cannot chdir(/var/spool/mqueue): Permission denied
-]]></programlisting>
- </para>
-
- <para>This is because your <filename>/var/spool/mqueue</filename>
- directory has a mode of <computeroutput>drwx------</computeroutput>.
- Type <command>chmod 755 <filename>/var/spool/mqueue</filename></command>
- as root to fix this problem. This will allow any process running on your
- machine the ability to <emphasis>read</emphasis> the
- <filename>/var/spool/mqueue</filename> directory.
- </para>
- </section>
-
- <section id="trbl-relogin-everyone">
- <title>Everybody is constantly being forced to relogin</title>
-
- <para>The most-likely cause is that the <quote>cookiepath</quote> parameter
- is not set correctly in the Bugzilla configuration. You can change this (if
- you're a Bugzilla administrator) from the editparams.cgi page via the web interface.
- </para>
-
- <para>The value of the cookiepath parameter should be the actual directory
- containing your Bugzilla installation, <emphasis>as seen by the end-user's
- web browser</emphasis>. Leading and trailing slashes are mandatory. You can
- also set the cookiepath to any directory which is a parent of the Bugzilla
- directory (such as '/', the root directory). But you can't put something
- that isn't at least a partial match or it won't work. What you're actually
- doing is restricting the end-user's browser to sending the cookies back only
- to that directory.
- </para>
-
- <para>How do you know if you want your specific Bugzilla directory or the
- whole site?
- </para>
-
- <para>If you have only one Bugzilla running on the server, and you don't
- mind having other applications on the same server with it being able to see
- the cookies (you might be doing this on purpose if you have other things on
- your site that share authentication with Bugzilla), then you'll want to have
- the cookiepath set to "/", or to a sufficiently-high enough directory that
- all of the involved apps can see the cookies.
- </para>
-
- <example id="trbl-relogin-everyone-share">
- <title>Examples of urlbase/cookiepath pairs for sharing login cookies</title>
-
- <blockquote>
- <literallayout>
- urlbase is <ulink url="http://bugzilla.mozilla.org/"/>
- cookiepath is /
-
- urlbase is <ulink url="http://tools.mysite.tld/bugzilla/"/>
- but you have http://tools.mysite.tld/someotherapp/ which shares
- authentication with your Bugzilla
- cookiepath is /
- </literallayout>
- </blockquote>
- </example>
-
- <para>On the other hand, if you have more than one Bugzilla running on the
- server (some people do - we do on landfill) then you need to have the
- cookiepath restricted enough so that the different Bugzillas don't
- confuse their cookies with one another.
- </para>
-
-
- <example id="trbl-relogin-everyone-restrict">
- <title>Examples of urlbase/cookiepath pairs to restrict the login cookie</title>
- <blockquote>
- <literallayout>
- urlbase is <ulink url="http://landfill.bugzilla.org/bugzilla-tip/"/>
- cookiepath is /bugzilla-tip/
-
- urlbase is <ulink url="http://landfill.bugzilla.org/bugzilla-2.16-branch/"/>
- cookiepath is /bugzilla-2.16-branch/
- </literallayout>
- </blockquote>
- </example>
-
- <para>If you had cookiepath set to <quote>/</quote> at any point in the
- past and need to set it to something more restrictive
- (i.e. <quote>/bugzilla/</quote>), you can safely do this without
- requiring users to delete their Bugzilla-related cookies in their
- browser (this is true starting with Bugzilla 2.18 and Bugzilla 2.16.5).
- </para>
- </section>
-
- <section id="trbl-relogin-some">
- <title>Some users are constantly being forced to relogin</title>
-
- <para>First, make sure cookies are enabled in the user's browser.
- </para>
-
- <para>If that doesn't fix the problem, it may be that the user's ISP
- implements a rotating proxy server. This causes the user's effective IP
- address (the address which the Bugzilla server perceives him coming from)
- to change periodically. Since Bugzilla cookies are tied to a specific IP
- address, each time the effective address changes, the user will have to
- log in again.
- </para>
-
- <para>If you are using 2.18 (or later), there is a
- parameter called <quote>loginnetmask</quote>, which you can use to set
- the number of bits of the user's IP address to require to be matched when
- authenticating the cookies. If you set this to something less than 32,
- then the user will be given a checkbox for <quote>Restrict this login to
- my IP address</quote> on the login screen, which defaults to checked. If
- they leave the box checked, Bugzilla will behave the same as it did
- before, requiring an exact match on their IP address to remain logged in.
- If they uncheck the box, then only the left side of their IP address (up
- to the number of bits you specified in the parameter) has to match to
- remain logged in.
- </para>
-
- </section>
-
- <section id="trbl-index">
- <title><filename>index.cgi</filename> doesn't show up unless specified in the URL</title>
- <para>
- You probably need to set up your web server in such a way that it
- will serve the index.cgi page as an index page.
- </para>
- <para>
- If you are using Apache, you can do this by adding
- <filename>index.cgi</filename> to the end of the
- <computeroutput>DirectoryIndex</computeroutput> line
- as mentioned in <xref linkend="http-apache"/>.
- </para>
-
- </section>
-
- <section id="trbl-passwd-encryption">
- <title>
- checksetup.pl reports "Client does not support authentication protocol
- requested by server..."
- </title>
-
- <para>
- This error is occurring because you are using the new password
- encryption that comes with MySQL 4.1, while your
- <filename>DBD::mysql</filename> module was compiled against an
- older version of MySQL. If you recompile <filename>DBD::mysql</filename>
- against the current MySQL libraries (or just obtain a newer version
- of this module) then the error may go away.
- </para>
-
- <para>
- If that does not fix the problem, or if you cannot recompile the
- existing module (e.g. you're running Windows) and/or don't want to
- replace it (e.g. you want to keep using a packaged version), then a
- workaround is available from the MySQL docs:
- <ulink url="http://dev.mysql.com/doc/mysql/en/Old_client.html"/>
- </para>
-
- </section>
-
-</appendix>
-
-<!-- Keep this comment at the end of the file
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