In Apache 2.2 there are 2 types of advanced caching available: – Memory based caching – Disk based caching Here are some tips and links related to the disk cache feature: APACHE 2.2 cache cleaning command: Recomended to run regularly from cron job # Runs as cron job, in nice mode, and limits the cache …

Extracted from: http://httpd.apache.org/docs/2.2/mod/mod_log_config.html#logformat Format String Description ============= ============================================================================================================ %% The percent sign %a Remote IP-address %A Local IP-address %B Size of response in bytes, excluding HTTP headers. %b Size of response in bytes, excluding HTTP headers. In CLF format, i.e. a ‘-‘ rather than a 0 when no bytes are sent. %{Foobar}C The contents of …

Ive been looking for a way to set the DEFLATE globally and then disable it individually as needed either in vhosts or in containers. There are two way to configure the DEFLATE: – INCLUDE-ALL-with-Exceptions : Compress all content except the exceptions defined – EXCLUDE-ALL-with-Exceptions : Compress none of the contents except the exceptions defined The …

Introduction: Steps to compile Apache: – Installation of needed development packages – Prepare the directories needed – copy the config file and script below – Run the script below Installation of needed development packages Needed for Apache mod_deflate libzip-dev (sources) libzip1 (bin libs.) zlib1g-dev (sources) Needed for Mod_security libpcre3-dev libpcrecpp0 libxml2-dev Compiling script Configuration file …

w3m -dump http://my.server.com

eg. SetEnvIfNoCase Request_URI “.*\.html” !NOLOG CustomLog /var/log/httpd/main.log j_common env=!NOLOG

# Build and install a distributed Apache module, say mod_foo.c, into its own DSO mod_foo.so: * Build and install via configure (preferred): $ ./configure –prefix=/path/to/install –enable-shared=foo $ make install * Build and install manually: – Edit src/Configuration: > SharedModule modules/xxxx/mod_foo.so $ make $ cp src/xxxx/mod_foo.so /path/to/install/libexec – Edit /path/to/install/etc/httpd.conf >> LoadModule foo_module /path/to/install/libexec/mod_foo.so # Build …

It can occur that a new worker set prevents apache to start, although correct configured. Possible cause: Mod_JK shared file is too small Size must be at least: Header: 84 Bytes Per Worker: 400 Bytes Extra at the end: 800 Bytes Any type worker uses the same amount of memory(400 bytes): loadBalancers and hosts Configuration: …

SecFilterEngine DynamicOnly SecFilterScanPOST On SecFilterDefaultAction “deny,log,status:400” SecFilterSelective REQUEST_URI “

NOTE: The size of the zipped content(not header) is about 1/3 of original size. mod_gzip_command_version ‘/mod_gzip_status’ mod_gzip_temp_dir /tmp/mod_gzip_httpd mod_gzip_keep_workfiles No mod_gzip_minimum_file_size 1000 mod_gzip_maximum_file_size 100000 mod_gzip_maximum_inmem_size 60000 mod_gzip_min_http 1000 mod_gzip_handle_methods GET mod_gzip_item_include file \.html$ mod_gzip_item_include file \.jsp$ mod_gzip_item_include file \.do$ mod_gzip_item_include mime text/html mod_gzip_item_include mime text/plain mod_gzip_item_include mime application/x-javascript mod_gzip_item_include mime text/css mod_gzip_item_include mime text/xml mod_gzip_item_include …

Ursache ist, dass die Pfade richtig gesetzt werden müssen, damit ld den Parameter -lssl kennt. export LD_LIBRARY_PATH=”/www/hans/src/openssl-0.9.8j/” export LIBS=”-L/www/hans/src/openssl-0.9.8j” export CPPFLAGS=”-I/www/hans/src/openssl-0.9.8j/include/openssl” echo $LD_LIBRARY_PATH /www/jamba/src/openssl-0.9.8j/:/usr/lib/ echo $LIBS -L/www/jamba/src/openssl-0.9.8j echo $CPPFLAGS -I/www/jamba/src/openssl-0.9.8j/include/openssl

WARNING: MaxClients of 3000 exceeds compile time limit of 2048 servers, lowering MaxClients to 2048. To increase, please see the HARD_SERVER_LIMIT define in src/include/httpd.h. Why increase MaxClients to 2048? Apache 1.x is non-threaded, so increasing MaxClients beyond 256 usually results in lower performance; often dramatically lower performance. At a prior job I worked with a …

in /etc/apache2/envvars # envvars-std – default environment variables for apachectl # # This file is generated from envvars-std.in # export APACHE_RUN_USER=www-data export APACHE_RUN_GROUP=www-data export APACHE_PID_FILE=/var/run/apache2.pid umask 002

LogFormat “\”%h\” \”%{HOST}i\” \”%u\” \”%t\” \”%r\” \”%>s\” \”%b\” \”%{Referer}i\” \”%{User-Agent}i\” \”%{Connection}i\” \”%{Connection}o\” \”%{Content-Type}o\” \”%T\” \”PID:%P\” \”%{mod_gzip_result}n\” \”%{mod_gzip_input_size}n\” \”%{mod_gzip_output_size}n\” \”%{mod_gzip_compression_ration}n\”” JAMBA_BASIS_LOGFORMAT_GZIP

mod_cband (http://cband.linux.pl) can do this from 0.9.6.0 version! You should use CBandExceededSpeed directive to slow down pages when the bandwidth is exceeded 🙂 See: http://www.howtoforge.com/mod_cband_apache2_bandwidth_quota_throttling http://www.icewalkers.com/Linux/Software/524590/mod_cband.html http://www.montanalinux.org/mod_cband.html http://www.uno-code.com/?q=node/64

If an SSL error goes like this: In Browser: (Error code: ssl_error_rx_record_too_long) or in log file: [error] [client 81.19.201.7] Invalid method in request \\x16\\x03\\x01 Solution: Include the following directive in vhost: SSLEngine on That was it . 😉

Directive Description Default (worker.MPM) ===================== =============================================================================== ==================== ListenBackLog Maximum length of the queue of pending connections 511 . MaxClients Global maximum number of connections that will be processed simultaneously 400 MaxClients SHOULD NOT be lower than (ServerLimit) x (ThreadsPerChild). Normally they should be equal. . ServerLimit Upper limit on configurable number of processes (children) 16 …

telnet http://address 80 GET / WML/1.2

Error logs can be logged very easyly to syslig using the following ErrorLog syslog:local1 Access logs must use a pipe-to-script trick as follows: In Apache config: CustomLog |/usr/local/apache/bin/apache_syslog combined As script in system: Content of /usr/local/apache/bin/apache_syslog ——————————————— logger -i -p local3.info -t TEST-APACHE ——————————————— chmod 755 /usr/local/apache/bin/apache_syslog

apt-get install siege or apt-get install apache2-utils and use the program ‘ab‘ eg. /usr/sbin/ab -n 100 http://yoursite.com/

When using RewriteRule ….[P] with mod_gzip there are often problems To resolve this add the following directive to mod_gzip ———————————————– mod_gzip_item_include handler proxy-server ———————————————– mod_gzip_item_include mime “application/x-httpd-php.*” mod_gzip_item_include mime httpd/unix-directory mod_gzip_item_include handler ^server-status$ mod_gzip_item_exclude file \.css$ mod_gzip_item_exclude file \.js$ mod_gzip_item_exclude reqheader “Via:.*1\.0 PROXY” mod_gzip_item_exclude reqheader “Via:.*1\.0 lavoisier \(NetCache NetApp\/5\.0\.1R2\)”

SecFilterEngine On SecFilterScanPOST On SecFilterSelective “POST_PAYLOAD” “BoesesWort” “deny,log,status:412” # Ersetze BoesesWort durch das Wort, welches du sperren willst. # Speichere die Textdatei unter dem Namen .htaccess (den führenden Punkt nicht vergessen) SecFilterSelective “POST_PAYLOAD” “AnderesBoesesWort” “deny,log,status:412” # Alternative SecFilterSelective “POST_PAYLOAD” “BoesesWort” “deny,log,redirect:http.//www.deinedomain.de/seite.html”

curl -u user:pass -T /home/guest/test.txt http://my.server.com:8082/upload/

see: http://tomcat.apache.org/connectors-doc/generic_howto/timeouts.html The following directives are normally inserted in workers.properties file connection_pool_minsize (default 0) defines, how many idle connections remain when the pool gets shrinked. By default this is half of the maximum pool size. connection_pool_size (default 0) We generally do not recommend to use this attribute in combination with Apache httpd. For Apache httpd …

LogFormat “%h %l %u %t \”%r\” %>s %b mod_gzip:%{mod_gzip_result}n In:%{mod_gzip_input_size}nOut:%{mod_gzip_output_size}n:%{mod_gzip_compression_ratio}npct.” full_plus_gzip [17:29:14] CustomLog /var/log/httpd/mod_gzip.log full_plus_gzip Example of log entry: /reviews/cooling/HSR2_4.html HTTP/1.1″ 200 6289 mod_gzip: DECHUNK:OK In:23352 Out:6289:74pct.

date +%S.%N;w3m -dump http://www.mysite.de &>/dev/null;date +%S.%N

SetEnvIfNoCase Request_URI “^/string to exclude/” drop and then between and CustomLog /var/log/httpd/www.mydomainname.com-access_log combined env=!drop

eg. SetEnvIfNoCase Request_URI “.*\.html” !NOLOG Unsets the previously set NOLOG environment variable

%…a: Remote IP-address %…A: Local IP-address %…B: Bytes sent, excluding HTTP headers. %…b: Bytes sent, excluding HTTP headers. In CLF format i.e. a ‘-‘ rather than a 0 when no bytes are sent. %…c: Connection status when response was completed. ‘X’ = connection aborted before the response completed. ‘+’ = connection may be kept alive …

openssl s_client -connect localhost:443 -state -debug GET / HTTP/1.0