Apache: Difference between revisions

From DWIKI
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*http://www.cyberciti.biz/tips/configure-apache-web-server-for-core-dump.html
*http://www.cyberciti.biz/tips/configure-apache-web-server-for-core-dump.html
In apache configuration:
  CoreDumpDirectory /tmp/apache2-gdb-dump (make sure to have proper rights)


===On freebsd===
===On freebsd===
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  sysctl kern.sugid_coredump=1
  sysctl kern.sugid_coredump=1
  sysctl kern.coredumps=1
  sysctl kern.coredumps=1
===On Debian===
sysctl fs.suid_dumpable=2 ?
ulimit -c unlimited ?


==Socket is not connected: core_output_filter: writing data to the network==
==Socket is not connected: core_output_filter: writing data to the network==

Revision as of 15:40, 9 April 2013

From the apache homepage:

The Apache HTTP Server Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows NT. The goal of this project is to provide a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards.

Links

Documentation
http://httpd.apache.org/ Apache homepage
http://httpd.apache.org/docs/2.2/ 2.2 Reference
http://httpd.apache.org/docs/2.0/ 2.0 Reference
http://httpd.apache.org/docs/1.3/ 1.3 Reference
Apache and SSL
Apache2, Debian and SSL
More Apache and SSL
Articles
vhosts explained "Simplify Your Life with Apache Virtual Hosts" Russell Dyer 07/24/2003
Tools
http://awstats.sourceforge.net/ Apache log analyzer

Documentation

Virtual hosts

Application & modules

Log analyzers


Notes

  • Don't use the CGI to present the data unless it is protected. Best use awstats_buildstaticpages.pl to build the static pages and present those. Save resources and is more secure.

Related Items

Web-based Single Sign-On

Applications

Comparisons


FAQ

NameVirtualHost *:80 has no VirtualHosts

This means you're using <VirtualHost *> instead of <VirtualHost *:80> Or you have multiple declarations of NameVirtualHost *:80

Telnet session to webserver

telnet www.example.com 80
get / HTTP/1.1
<enter>
<enter>

For a virtual also pass host:

get / HTTP/1.1
host: virtual.host.com
<enter>


Authentication

Read:

In .htaccess put:

Authtype Basic
AuthUserFile /etc/apache/htusers
Require valid-user
AuthName "Protected"

Hide directories

RedirectMatch 404 /\.svn(/|$)
<FilesMatch \.(?i:gif|jpe?g|png)$>


Strange hang and not restarting

ipcs -s|grep apache
for i in `ipcs -s|grep apache|awk {'print $2'}`;do ipcrm sem $i;done;

Get core dumps


In apache configuration:

 CoreDumpDirectory /tmp/apache2-gdb-dump (make sure to have proper rights)

On freebsd

Set apache22limits_enable="YES in /etc/rc.conf

In apache configuration:

 CoreDumpDirectory /tmp/apache2-gdb-dump (make sure to have proper rights)

Other stuff to try

sysctl kern.sugid_coredump=1
sysctl kern.coredumps=1

On Debian

sysctl fs.suid_dumpable=2 ?
ulimit -c unlimited ?

Socket is not connected: core_output_filter: writing data to the network

Bug in some versions?

Connection refused: connect to listener on 0.0.0.0:80

Seems a jail problem, try setting

Listen 12.33.44.55:80


No such file or directory: Failed to enable the 'httpready' Accept Filter

In /boot/loader.conf

accf_data_load="YES"
accf_http_load="YES"


sorting apache logs

http://jehiah.cz/archive/sorting-apache-logs


unable to include potential exec

Rewriting and redirecting

http://www.aitechsolutions.net/apacheredirect.html

redirect http to https

#this usually does the trick
Redirect permanent / https://foo.com
*http://www.whoopis.com/howtos/apache-rewrite.html


debugging rewrites

status codes


client denied by server configuration

That's the Deny/Allow bits in config