Category: Webservers

Netem

March 31, 2006

Emulating wide area network delays Add delay of 100ms: tc qdisc add dev eth0 root netem delay 100ms Remove delay: tc qdisc change dev eth0 root netem delay 0ms Change delay to 1000ms: tc qdisc change dev eth0 root netem delay 1000ms Add random variation to 100ms delay of +/- 10ms: tc qdisc change dev eth0 root netem delay 100ms 10ms Add random variation to 100ms delay of +/- 10ms with 25% correlation: tc qdisc change dev eth0 root netem delay 100ms 10ms 25%

mod_jk for Plesk

October 1, 2005

Download and unpack mod_jk source package to /root/archive or other location as desired: wget http://archive.apache.org/dist/jakarta/tomcat-4/source/\ jakarta-tomcat-connectors-4.1.27-src.tar.gz tar -xvzf jakarta-tomcat-connectors-4.1.27-src.tar.gz cd jakarta-tomcat-connectors-4.1.27-src/jk/native2 Prepare the configure script: chmod 755 buildconf.sh ./buildconf.sh Run the configure script: ./configure –with-apxs2=/usr/sbin/apxs \ –with-java-home=/usr/java/j2sdk1.4.2/ make libtool –finish /usr/lib/httpd/modules Copy the new modules to the apache modules directory: cp ../build/jk2/apache2/*.so /etc/httpd/modules/

Pre-delegation access to FrontPage managed site with Plesk

September 30, 2005

On a server using Plesk, it is possible to setup event handlers that will create a host in the primary domain so that a client’s domain can be managed with FrontPage prior to delegation of the client’s domain name. For example, if the primary domain is “hosting.net” and the client domain is “acme.net” with an FTP user of “acme” then the “acme.hosting.net” can be created and used until “acme.net” becomes active. Place the following script in the cgi-bin folder of the primary domain:


#!/bin/sh

PDOMAIN=hosting.net

DOMAIN=$1
USER=$2
IP=$3

logger "Starting create-domain handler."
logger "Domain: $DOMAIN"
logger "User: $USER"
logger "IP: $IP"

# add user.hosting.net a record
/usr/local/psa/bin/dns.sh --add $PDOMAIN -a $USER -ip $IP

# add vhost.conf file
echo "ServerAlias $USER.$PDOMAIN" >> /home/httpd/vhosts/$DOMAIN/conf/vhost.conf

# add frontpage config file
FPCONF="/usr/local/frontpage/$USER.$PDOMAIN:80.cnf"

echo "vti_encoding:SR|utf8-nl" > $FPCONF
echo "servertype:apache-2.0" >> $FPCONF
echo "sendmailcommand:/var/qmail/bin/sendmail" >> $FPCONF
echo "authoring:enabled" >> $FPCONF
echo "extenderversion:5.0.2.2634" >> $FPCONF
echo "frontpageroot:/usr/local/frontpage/version5.0" >> $FPCONF
echo "serverconfig:/usr/local/frontpage/conf/$USER.$PDOMAIN.fp.80.cnf" >> $FPCONF

# add frontpage server config file
FPSERVER="/usr/local/frontpage/conf/$USER.$PDOMAIN.fp.80.cnf"

echo "Port 80" > $FPSERVER
echo "ResourceConfig /dev/null" >> $FPSERVER
echo "AccessConfig /dev/null" >> $FPSERVER
echo "ServerRoot \"/etc/httpd\"" >> $FPSERVER

echo "NameVirtualHost 127.0.0.1" >> $FPSERVER

echo "<VirtualHost   127.0.0.1:80>" >> $FPSERVER
echo "        ServerName      $USER.$PDOMAIN" >> $FPSERVER
echo "        User            $USER" >> $FPSERVER
echo "        Group   psacln" >> $FPSERVER
echo "        DocumentRoot    /var/www/vhosts/$DOMAIN/httpdocs" >> $FPSERVER
echo "        <Directory \"/var/www/vhosts/$DOMAIN/httpdocs\">" >> $FPSERVER
echo "                Options Indexes FollowSymLinks" >> $FPSERVER
echo "                AllowOverride AuthConfig Limit Indexes Options" >> $FPSERVER
echo "                Order allow,deny" >> $FPSERVER
echo "                Allow from all" >> $FPSERVER
echo "        </Directory>" >> $FPSERVER
echo "</VirtualHost>" >> $FPSERVER

echo "<VirtualHost   127.0.0.1:80>" >> $FPSERVER
echo "        ServerName      $USER.$PDOMAIN" >> $FPSERVER
echo "        User            $USER" >> $FPSERVER
echo "        Group   psacln" >> $FPSERVER
echo "        DocumentRoot    /var/www/vhosts/$DOMAIN/httpdocs" >> $FPSERVER
echo "        <Directory \"/var/www/vhosts/$DOMAIN/httpdocs\">" >> $FPSERVER
echo "                Options Indexes FollowSymLinks" >> $FPSERVER
echo "                AllowOverride AuthConfig Limit Indexes Options" >> $FPSERVER
echo "                Order allow,deny" >> $FPSERVER
echo "                Allow from all" >> $FPSERVER
echo "        </Directory>" >> $FPSERVER
echo "</VirtualHost>" >> $FPSERVER

# rebuild apache config
/usr/local/psa/admin/sbin/websrvmng -a -v

# restart apache
/sbin/service httpd restart

logger "Finished create-domain handler."

exit 0

#!/bin/sh

PDOMAIN=hosting.net

DOMAIN=$1

USER=$2

IP=$3

logger "Starting create-domain handler."

logger "Domain: $DOMAIN"

logger "User: $USER"

logger "IP: $IP"

# add user.hosting.net a record

/usr/local/psa/bin/dns.sh --add $PDOMAIN -a $USER -ip $IP

# add vhost.conf file

echo "ServerAlias $USER.$PDOMAIN" >> /home/httpd/vhosts/$DOMAIN/conf/vhost.conf

# add frontpage config file

FPCONF="/usr/local/frontpage/$USER.$PDOMAIN:80.cnf"

echo "vti_encoding:SR|utf8-nl" > $FPCONF

echo "servertype:apache-2.0" >> $FPCONF

echo "sendmailcommand:/var/qmail/bin/sendmail" >> $FPCONF

echo "authoring:enabled" >> $FPCONF

echo "extenderversion:5.0.2.2634" >> $FPCONF

echo "frontpageroot:/usr/local/frontpage/version5.0" >> $FPCONF

echo "serverconfig:/usr/local/frontpage/conf/$USER.$PDOMAIN.fp.80.cnf" >> $FPCONF

# add frontpage server config file

FPSERVER="/usr/local/frontpage/conf/$USER.$PDOMAIN.fp.80.cnf"

echo "Port 80" > $FPSERVER

echo "ResourceConfig /dev/null" >> $FPSERVER

echo "AccessConfig /dev/null" >> $FPSERVER

echo "ServerRoot \"/etc/httpd\"" >> $FPSERVER

echo "NameVirtualHost 127.0.0.1" >> $FPSERVER

echo "<VirtualHost 127.0.0.1:80>" >> $FPSERVER

echo " ServerName $USER.$PDOMAIN" >> $FPSERVER

echo " User $USER" >> $FPSERVER

echo " Group psacln" >> $FPSERVER

echo " DocumentRoot /var/www/vhosts/$DOMAIN/httpdocs" >> $FPSERVER

echo " <Directory \"/var/www/vhosts/$DOMAIN/httpdocs\">" >> $FPSERVER

echo " Options Indexes FollowSymLinks" >> $FPSERVER

echo " AllowOverride AuthConfig Limit Indexes Options" >> $FPSERVER

echo " Order allow,deny" >> $FPSERVER

echo " Allow from all" >> $FPSERVER

echo " </Directory>" >> $FPSERVER

echo "</VirtualHost>" >> $FPSERVER

echo "<VirtualHost 127.0.0.1:80>" >> $FPSERVER

echo " ServerName $USER.$PDOMAIN" >> $FPSERVER

echo " User $USER" >> $FPSERVER

echo " Group psacln" >> $FPSERVER

echo " DocumentRoot /var/www/vhosts/$DOMAIN/httpdocs" >> $FPSERVER

echo " <Directory \"/var/www/vhosts/$DOMAIN/httpdocs\">" >> $FPSERVER

echo " Options Indexes FollowSymLinks" >> $FPSERVER

echo " AllowOverride AuthConfig Limit Indexes Options" >> $FPSERVER

echo " Order allow,deny" >> $FPSERVER

echo " Allow from all" >> $FPSERVER

echo " </Directory>" >> $FPSERVER

echo "</VirtualHost>" >> $FPSERVER

# rebuild apache config

/usr/local/psa/admin/sbin/websrvmng -a -v

# restart apache

/sbin/service httpd restart

logger "Finished create-domain handler."

exit 0

Now from the Plesk control panel goto Server -> Event Manager -> Add New Event Handler In the Event field select “Physical hosting created”. In the Command field enter: /home/httpd/vhosts/hosting.com/cgi-bin/create-domain-handler.sh <new_domain_name> <new_system_user> <new_ip_address>

FrontPage Extension Notes

September 27, 2005

Use this command to add a frontpage web:

./owsadm.exe -o install \
   -s /usr/local/apache2/conf/httpd.conf  \
   -xu nobody \
   -xg nobody \
   -u myuser \
   -pw mypass 
   -p 80 \
   -m www.mydomain.com \
   -t apache-2.0

./owsadm.exe -o install \

-s /usr/local/apache2/conf/httpd.conf \

-xu nobody \

-xg nobody \

-u myuser \

-pw mypass

-p 80 \

-m www.mydomain.com \

-t apache-2.0

Determine Apache Compile Settings

August 26, 2005

How can one determine what settings were used to compile an install of the Apache webserver? At a command line type the following:

/usr/local/apache2/bin/httpd -V

1	/usr/local/apache2/bin/httpd -V

You’ll get back results similar to this:


Server version: Apache/2.0.54
Server built:   May 17 2005 08:19:09
Server's Module Magic Number: 20020903:9
Architecture:   32-bit
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_SYSVSEM_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D HTTPD_ROOT="/usr/local/apache2"
 -D SUEXEC_BIN="/usr/local/apache2/bin/suexec"
 -D DEFAULT_PIDLOG="logs/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_LOCKFILE="logs/accept.lock"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"

Server version: Apache/2.0.54

Server built: May 17 2005 08:19:09

Server's Module Magic Number: 20020903:9

Architecture: 32-bit

Server compiled with....

-D APACHE_MPM_DIR="server/mpm/prefork"

-D APR_HAS_SENDFILE

-D APR_HAS_MMAP

-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)

-D APR_USE_SYSVSEM_SERIALIZE

-D APR_USE_PTHREAD_SERIALIZE

-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT

-D APR_HAS_OTHER_CHILD

-D AP_HAVE_RELIABLE_PIPED_LOGS

-D HTTPD_ROOT="/usr/local/apache2"

-D SUEXEC_BIN="/usr/local/apache2/bin/suexec"

-D DEFAULT_PIDLOG="logs/httpd.pid"

-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"

-D DEFAULT_LOCKFILE="logs/accept.lock"

-D DEFAULT_ERRORLOG="logs/error_log"

-D AP_TYPES_CONFIG_FILE="conf/mime.types"

-D SERVER_CONFIG_FILE="conf/httpd.conf"

If you have the source code that was used to do the build available then you can look in the file “config.log”. At the top of the file you’ll see something like this:


This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by configure, which was
generated by GNU Autoconf 2.59.  Invocation command line was

  $ <strong>./configure --enable-so</strong>