Linux Troubleshooting Bible [Electronic resources] نسخه متنی

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Linux Troubleshooting Bible [Electronic resources] - نسخه متنی

Christopher Negusand, Thomas Weeks

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Migrating From Apache 1.x to 2.0

Those readers who are accustomed to working with Apache 1.x may find the transition to Apache 2.0 somewhat confusing. While the new version is much more robust and secure, there are some changes which you'll need to know about before you start performing your habitual tasks.

One common problem for 1.x administrators involves Apache 2.0's added security. By default, Apache now displays a standardized error page when a request is made for a nonexistent page. The document root

OptionIndexes is disabled, even for virtual hosts and for / (each site's own document root). This means that a new

VirtualHosts entry with no

indexl file will display the default error page, which looks like the old server default

indexl file. While this prevents malicious users from browsing part of your web server's file system by hitting a site with no index file, it can be annoying, especially if you're trying to just set up an HTTP-based file share.





Note

When moving or migrating between Apache 1.x systems and 2.x systems, as noted earlier in this chapter, the Apache RPM base package name is no longer

apache with 2.0. Instead, it's

httpd . Use these commands to search for both package names on a newer system:


# rpm -qa|grep apache
# rpm -qa|grep httpd
httpd-devel-2.0.46-25.ent
httpd-2.0.46-25.ent


Another area for confusion is the

DirectoryIndex directive. Under Apache 2.0, the default number of

DirectoryIndex file types (that is, the number of web page filenames and extensions that are considered the home page for a directory) is less than what it was under 1.x. Where there used to be five to seven supported file types, the default is now only two. To change this setting, look for the following line in

httpd.conf:


DirectoryIndex indexl indexl.var

If you've migrated from Apache 1.x to 2.0 and many of your old pages suddenly stop functioning, then this is probably the reason.





Note

Before you modify the

DirectoryIndex defaults, check the new outsourced

/etc/httpd/conf.d/ directory to see if the directory index is now being handled by an external configuration file located there. For example, PHP is now handled by

/etc/httpd/conf.d/php.conf , Python by

/etc/httpd/conf.d/python.conf , and so on.


Finally, when you migrate from Apache 1.x to 2.0, you should copy all your Section 3

VirtualHost blocks from the old

httpd.conf file into the new

httpd.conf .






Caution

Do not copy your old 1.x files into the new 2.0 directories, and do not copy/paste an entire Apache 1.3 configuration contents (Section 1 or Section 2 content) into an Apache 2.0 daemon configuration file. Doing so will break Apache, create multiple migration-related problems, and possibly even require you to wipe and reinstall Apache from scratch.


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