Release: 1.2 (Released 5th June 1997) (local download
Bugs in 1.2:
Bugs fixed in next release:
If a request is made for a symbolic link to a directory,
the contents of any .htaccess inside the target directory
is used to determine if the symlink is allowed here.
Problem that could cause a "malloc" error when using
Added support for Maxion/OS SVR4.2 Real Time Unix,
NonStop-UX, UnixWare 2.1.2, DEC cc compiler on Ultrix,
Large numbers of virtual hosts can cause problems due to
lack of file descriptors (see below)
Linux compilation problems on Alpha and Sparc hardware, or
on Intel when kernel is compiled without shared memory (see
Patches to Apache 1.2 bugs will be made available in the 1.2
patches directory on the Apache site. This directory also
includes some minor new features which did not make it into
the 1.2 release. For details of all previously reported bugs,
see the Apache bug
database and Known
Bugs page. Many common configuration questions are
answered in the Apache FAQ.
Some operating systems have problems due to a lack of file
descriptors. This can cause sites with large numbers of
virtual hosts to fail, especially if more descriptors are
used for multiple log files or when using
Listen. This problem can usually be reduced by
increasing the number of descriptors allowed per process.
However there can be additional problems caused by
third-party libraries which can only use low-numbered file
descriptors (for example, some recent versions of bind, the
DNS resolver library). In addition Solaris 2 has a specific
problem meaning that it cannot use more than access file
descriptors above 256 as streams.
The next release of Apache will incorporate code to alleviate
these problems. This code will attempt to leave a few file
descriptors available for libraries that cannot use
high-numbered descriptors. And for Solaris it will try to
always use descriptors above 256, leaving the values below
256 for use by file streams.
Apache now outputs a more informative error message if it is
run on a system without "shared memory". Normally most
versions of Linux support system-V style shared memory, which
is used for the "scoreboard" shared by all Apache processes.
But some people compile the kernel without System-V shared
memory, which makes Apache fail to run with the error
"Could not call shmget". Now Apache will explain
that the kernel needs recompiling with the
CONFIG_SYSVIPC flag set.
There are also some slight differences between Linux on
non-Intel hardware systems (Alpha and Sparc). These are now
automatically detected and the correct configurations set.
The error log file does not only log errors: it also logs
warnings and some purely informational messages. For some
sites the number of warnings and information messages logged
can hide real problems and take unnecessary disk space. For
example, a site with lots of slow modem clients might get
lots of "send lost connection to client" warnings. A possible
future enhancement to Apache would allow Apache to be
configured to log messages based on their importance - for
example, it could be told to only log errors.
In the next release, additional options
IconHeight and IconWidth can be
given on the IndexOptions line to specify the
width and height of icons returned in a directory index.
There has been some discussion about extended the
functionality of Alias and Redirect
directives to allow regular expressions. At the moment, these
directives can only match an initial part of a URL and change
it inot another initial part. The use of regular expressions
would give much more flexibility. At the moment, this can be
done using the rewrite module (mod_rewrite), but this is not
part of the standard Apache configuration, and the rewrite
rules can be quite complex to understand.
Authentication password files, typically called .htpasswd,
have the format "username:password". In the
future it will probably be possible to store additional
information after the password field, separated by a colon.
This is a similar format to the standard
/etc/password file, although it is highly
recommended that Web passwords are not the same as
The currently distributed configuration files set the
HostnameLookups directive to On. This means
Apache tries to convert the IP address of the calling client
into a hostname for every request, which causes extra
resource use and often uncessary processing. From the next
release the distributed configuration files will default this
directive to Off. The main effect of this will
be that the log files will contain IP addresses rather than
hostnames. Log analysis software should be capable of
efficiently translating these IP numbers into names.
On a topical note, the Wimbledon Tennis Championship pages at
using Apache to serve up news about the latest serves on
court. At least rain does not stop Apache's services. Other
sports sites using Apache include the US Masters at www.masters.org and the
Australian Open at www.ausopen.org.