Adding debian version 2.4.58-1.debian/2.4.58-1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+Contents
+========
+
+	Apache2 Configuration under Debian GNU/Linux
+		Files and Directories in '/etc/apache2'
+		Tools
+
+	Using mod_cache_disk
+
+	SSL
+		Enabling SSL
+		Creating self-signed certificates
+		SSL workaround for MSIE
+
+	Suexec
+
+	Documentation
+
+	Upgrades
+
+	Common Problems
+
+	For Developers
+
+Apache2 Configuration under Debian GNU/Linux
+============================================
+
+Debian's default Apache2 installation attempts to make adding and
+removing modules, virtual hosts, and extra configuration directives as
+flexible as possible, in order to make automating the changes and
+administering the server as easy as possible.
+
+Please be aware that this layout is quite different from the standard
+Apache configuration. Due to the use of environment variables, apache2
+needs to be started/stopped with '/etc/init.d/apache2', apachectl, or
+apache2ctl. Calling '/usr/bin/apache2' directly will not work with the
+default configuration. To call apache2 with specific command line
+arguments, just call apache2ctl with the same arguments.
+
+Files and Directories in '/etc/apache2':
+---------------------------------------
+
+apache2.conf
+
+	This is the main configuration file. It does not include any
+	actual configuration we expect to be adapted on your site, so
+	where possible please do not touch it. This file is the
+	foundation stone of the Apache configuration in Debian and should
+	be up to date after upgrades to make sure all configuration pieces
+	are properly included.
+
+	If you want to extend the global configuration, you can customize
+	the Apache web server by including configuration files through the
+	conf-available mechanism. To change listening ports and socket
+	configuration use ports.conf (see below).
+
+ports.conf
+
+	Configuration directives for which ports and IP addresses to
+	listen to.
+
+magic
+
+	Patterns for mod_mime_magic. This is not compatible with the format
+	used by current versions of the file/libmagic packages.
+
+envvars
+
+	This contains environment variables that may be used in the
+	configuration. Some settings, like user and pid file, need to
+	go in here so that other scripts can use them. It can also
+	be used to change some default settings used by apache2ctl,
+	including the ulimit value for the maximum number of open files.
+	The default LANG=C setting is also here, and can be changed to a
+	different language.
+
+conf-available/
+
+	Files in this directory are included in the global server scope by
+	this line in apache2.conf:
+
+	# Include generic snippets of statements
+		IncludeOptional conf-enabled/*.conf
+
+	This is a good place to add additional configuration
+	directives. All configuration snippets need a '.conf' suffix to be
+	included as actual configuration. The local administrator should
+	use file names starting with 'local-' to avoid name clashes with
+	files installed by packages.
+
+	Configuration snippets can be enabled and disabled by using the
+	a2enconf and a2disconf executables. This works similarly to the
+	approach used for modules and sites below.
+
+	Configuration snippets can of course also be included in individual
+	virtual hosts.
+
+conf-enabled/
+
+	Like mods-enabled/ and sites-enabled/, a piece of configuration is
+	enabled by symlinking a file from conf-available/ into this
+	directory. The a2enconf helper is provided to assist this task.
+
+mods-available/
+
+	This directory contains a series of .load and .conf files.
+	The .load files contain the Apache configuration directive
+	necessary to load the module in question.  The corresponding
+	.conf files contain configuration directives necessary to
+	utilize the module in question.
+
+mods-enabled/
+
+	To actually enable a module for Apache2, it is necessary to
+	create a symlink in this directory to the .load (and .conf, if
+	it exists) files associated with the module in
+	mods-available/.  For example:
+
+	cgi.load -> /etc/apache2/mods-available/cgi.load
+
+	The a2enmod helper can be used to enable a module.
+
+sites-available/
+
+	Like mods-available/, except that it contains configuration
+	directives for different virtual hosts that might be used with
+	apache2.  Note that the hostname doesn't have to correspond
+	exactly with the filename.  '000-default.conf' is the default
+	host which is provided by Debian.
+
+sites-enabled/
+
+	Similar in functionality to mods-enabled/, sites-enabled
+	contains symlinks to sites in sites-available/ that the
+	administrator wishes to enable.
+
+	Apache uses the first VirtualHost that matches the IP/Port
+	as default for named virtual hosts. Therefore the 'default'
+	site should be called '000-default' to make sure it sorts before
+	other sites.
+
+	Example:
+	dedasys.conf -> /etc/apache2/sites-available/dedasys.conf
+
+	The a2ensite helper can be used to enable a site.
+
+The Include directives ignore files with names that do not end with a
+.conf suffix. This behavior has changed from previous releases!
+
+In some cases you may want to enable a specific piece of configuration
+(think of files shipped in conf-available/) for a particular virtual
+host only and not globally as is our default. In such cases you can
+disable the configuration at a global scope for example by doing
+
+	a2disconf some-configuration
+
+Then it can be included in a particular virtual host within a file in
+sites-enabled/. You may want to add
+
+	Include conf-available/some-configuration.conf
+
+in that site configuration. However, be careful, as this may not work for
+some configurations, depending on the context and implications of some
+directives.
+
+
+Tools
+-----
+
+a2enmod and a2dismod are available for enabling and disabling modules utilizing
+the above configuration system.
+
+a2ensite and a2dissite do essentially the same thing as the above tools, but
+for sites rather than modules. Finally a2enconf and a2disconf are the
+corresponding tools for configuration snippets.
+
+a2query is a helper script providing runtime information about the running
+server instance. For example it can be used to query enabled modules, the
+selected MPM, and other information. This tool is primarily meant for package
+maintainers who need to interact with the Apache packages to activate
+their configurations upon package installation, but it can be used by users
+as well.
+
+apxs2 -a/-A is modified to use a2enmod to activate newly installed modules.
+
+
+Using mod_cache_disk
+====================
+
+To ensure that the disk cache does not grow indefinitely, htcacheclean is
+started when mod_cache_disk is enabled. Both daemon and cron (daily) mode
+are supported. The configuration (run mode, cache size, etc.) is in
+'/etc/default/apache-htcacheclean'.
+
+Normally, htcacheclean is automatically started and stopped by
+'/etc/init.d/apache2'. However, if you change the state of mod_cache_disk or
+the configuration of htcacheclean while apache2 is running, you may need to
+manually start/stop htcacheclean with "/etc/init.d/apache2 start-htcacheclean"
+or "/etc/init.d/apache2 stop-htcacheclean".
+
+Note that mod_cache_disk was named mod_disk_cache in versions 2.2 and earlier.
+
+
+SSL
+===
+
+Enabling SSL
+------------
+
+To enable SSL, type (as user root):
+
+	a2ensite default-ssl
+	a2enmod ssl
+
+If you want to use self-signed certificates, you should install the ssl-cert
+package (see below). Otherwise, just adjust the SSLCertificateKeyFile and
+SSLCertificateFile directives in '/etc/apache2/sites-available/default-ssl.conf'
+to point to your SSL certificate. Then restart apache:
+
+	service apache2 restart
+
+The SSL key file should only be readable by root; the certificate file may be
+globally readable. These files are read by the Apache parent process which runs
+as root, and it is therefore not necessary to make the files readable by the
+www-data user.
+
+Creating self-signed certificates
+---------------------------------
+
+If you install the ssl-cert package, a self-signed certificate will be
+automatically created using the hostname currently configured on your computer.
+You can recreate that certificate (e.g. after you have changed '/etc/hosts' or
+DNS to give the correct hostname) as user root with:
+
+	make-ssl-cert generate-default-snakeoil --force-overwrite
+
+To create more certificates with different host names, you can use
+
+	make-ssl-cert /usr/share/ssl-cert/ssleay.cnf /path/to/cert-file.crt
+
+This will ask you for the hostname and place both SSL key and certificate in
+the file '/path/to/cert-file.crt'. Use this file with the SSLCertificateFile
+directive in the Apache config (you don't need the SSLCertificateKeyFile in
+this case as it also contains the key). The file '/path/to/cert-file.crt'
+should only be readable by root. A good directory to use for the additional
+certificates/keys is '/etc/ssl/private'.
+
+SSL workaround for MSIE
+-----------------------
+
+The SSL workaround for MS Internet Explorer needs to be added to your SSL
+VirtualHost section (it was previously in ssl.conf but caused keepalive to be
+disabled even for non-SSL connections):
+
+	BrowserMatch "MSIE [2-6]" \
+		nokeepalive ssl-unclean-shutdown \
+		downgrade-1.0 force-response-1.0
+	BrowserMatch "MSIE [17-9]" ssl-unclean-shutdown
+
+The default SSL virtual host in '/etc/apache2/sites-available/default-ssl.conf'
+already contains this workaround.
+
+
+Suexec
+======
+
+Debian ships two version of the suexec helper program required by
+mod_suexec. It is not installed by default, to avoid possible security
+issues. The package apache2-suexec-pristine contains the standard version
+that works only with document root /var/www, userdir suffix public_html,
+and Apache run user www-data. The package apache2-suexec-custom contains a
+customizable version that can be configured with a config file to use
+different settings (like /srv/www as document root). For more information
+see the suexec(8) man page in the apache2-suexec-custom package.
+
+Since apache2-suexec-custom has received less testing and might be slightly
+slower, apache2-suexec is the recommended version unless you need the features
+from apache2-suexec-custom.
+
+Starting with Apache 2.4 both alternatives can be installed at the same
+time and the default suexec mechanism can be picked by using the
+update-alternatives(8) system.
+
+
+Unicode File Name Normalization
+===============================
+
+Using Apache with the document root on a file system that does unicode
+normalization on the filenames can cause security issues. In Debian,
+this affects ZFS with the non-default option to enable filename normalization,
+and HFS+. It is strongly recommended not to use Apache with such file systems.
+More information about this issue can be found by searching the web for
+CVE-2013-0966.
+
+
+Documentation
+=============
+
+The full Apache 2 documentation can be found on the web at
+
+http://httpd.apache.org/docs/2.4/
+
+or, if you have installed the apache2-doc package, in
+
+/usr/share/doc/apache2-doc/manual/
+
+or at
+
+http://localhost/manual/
+
+There is also a wiki that contains useful information:
+
+http://wiki.apache.org/httpd/
+
+Some hints about securing Apache 2 on Debian are available at
+
+http://wiki.debian.org/Apache/Hardening
+
+
+Upgrades
+========
+
+Changes in the Apache packages that require manual configuration adjustments
+are announced in NEWS.Debian. Installing the apt-listchanges package is
+recommended. It will display the relevant NEWS.Debian sections before
+upgrades.
+
+
+Multiple instances
+==================
+
+There is some support for running multiple instances of Apache2 on the same
+machine. See '/usr/share/doc/apache2/README.multiple-instances' for more
+information.
+
+
+Common Problems
+===============
+
+1) Error message "Could not reliably determine the server's fully qualified 
+domain name, using 127.0.0.1 for ServerName" during start
+
+This can usually be ignored but it means that Apache httpd was unable to obtain
+a fully-qualified hostname by doing a reverse lookup on your server's IP
+address. You may want to add the fully-qualified hostname to '/etc/hosts'.
+An alternative is to specify "ServerName 127.0.0.1" in the global server
+context of the configuration, e.g. in
+'/etc/apache2/conf-enabled/local-servername.conf'.
+
+2) Error message "mod_rewrite: could not create rewrite_log_lock"
+
+This probably means that there are some stale SYSV semaphores around. This
+usually happens after apache2 has been killed with kill -9 (SIGKILL). You can
+clean up the semaphores with:
+
+	ipcs -s | grep www-data | awk ' { print $2 } ' | xargs ipcrm sem
+
+3) Message "File does not exist: /etc/apache2/htdocs" in error log
+
+In most cases this means that no matching VirtualHost definition could be
+found for an incoming request. Check that the target IP address/port and the
+name in the Host: header of the request actually match one of the virtual
+hosts.
+
+4) Message "Couldn't create pollset in child; check user or system limits" in
+error log
+
+On Linux kernels since 2.6.27.8, the value in
+
+	/proc/sys/fs/epoll/max_user_instances
+
+needs to be larger than
+
+	for prefork/itk  MPM: 2 * MaxClients
+	for worker/event MPM: MaxClients + MaxClients/ThreadsPerChild
+
+It can be set on boot by adding a line like
+
+	fs.epoll.max_user_instances=1024
+
+to '/etc/sysctl.conf'.
+
+There are several other error messages related to creating a pollset that can
+appear for the same reason.
+
+On the other hand, errors about adding to a pollset are related to the setting
+fs.epoll.max_user_watches. On most systems, max_user_watches should be high
+enough by default.
+
+5) Message "Server should be SSL-aware but has no certificate configured" in
+error log
+
+Since 2.2.12, Apache is stricter about certain misconfigurations concerning
+name based SSL virtual hosts. See NEWS.Debian.gz for more details.
+
+6) Apache does not pass Authorization header to CGI scripts
+
+This is intentional to avoid security holes. If you really want to change it,
+you can use mod_rewrite:
+
+	RewriteCond %{HTTP:Authorization} (.*)
+	RewriteRule . - [env=HTTP_AUTHORIZATION:%1]
+
+7) mod_dav is behaving strangely
+
+In general, if you use mod_dav_fs, you need to disable multiviews and script
+execution for that directory. For example:
+
+	<Directory /var/www/dav>
+		Dav on
+		Options -MultiViews -ExecCGI
+		SetHandler none
+		<IfModule mod_php5.c>
+			php_admin_value engine Off
+		</IfModule>
+	</Directory>
+
+8) Message "apache2: bad user name ${APACHE_RUN_USER}" when starting apache2
+directly
+
+Use apache2ctl (it accepts all the same options as apache2).
+
+9) A PUT with mod_dav_fs fails with "Unable to PUT new contents for /...
+[403, #0]" even if Apache has permission to write the file.
+
+Apache also needs write permission to the directory containing the file, in
+order to replace it atomically.
+
+10) When starting/reloading Apache, there is the error message
+"ulimit: open files: cannot modify limit: Operation not permitted"
+
+If you are running Apache in a vserver environment, the start script may not
+be allowed to set the maximum number of open files. You should adjust
+APACHE_ULIMIT_MAX_FILES in /etc/apache2/envvars to your setup. You can
+disable changing the limits by setting APACHE_ULIMIT_MAX_FILES=true .
+
+
+For Developers
+==============
+
+The Apache 2 web server package provides several helpers to assist
+packagers to interact with the web server for both, build and installation
+time. Please refer to the PACKAGING file in the apache2 package for
+detailed information.