Script to optimize apache webserver

#!/bin/bash

# Credits Gus Maskowitz, Rob Wilderspin, Dan Farmer, Mark Hyde

# ===================================== DO SECTION =====================================

ME=`whoami`

LAST_ECHO=0

TYPE_ECHO=0

if [ "$ME" != "root" ]; then

echo “You’ll need to be root to run this”

  exit 1

fi

/sbin/service httpd status 2>&1 >/dev/null

if [ $? -ne 0 ]; then

exit 0

fi

apachetuner_version=”Apachetuner v1.0″

if [ -f /etc/redhat-release ]; then

system=$(cat /etc/redhat-release)

else

echo “This does not appear to be Red-Hat and is unfortunately not yet supported”

  exit 0

fi

# This was written specifically for a Rackspace environment

if [ -f /root/.rackspace/server_number ]; then

server_number=$(cat /root/.rackspace/server_number)

fi

server_name=$(uname -n)

server_httpd_rpm=$(rpm -qf $(which httpd))

memtotal_mb=$(awk ‘/MemTotal/ {printf “%d”, $2/1024}’ /proc/meminfo)

# mem_alert_level=$(echo $memtotal_mb | awk ‘{printf “%d”, $0 * 0.9}’)

#### The following cointributed by Mark Hyde

HTTPD_V_TMPFILE=$(mktemp)

httpd -V > $HTTPD_V_TMPFILE

apache_architecture=$(awk -F’: +’ ‘$1~/^Architecture/{print $2}’ ${HTTPD_V_TMPFILE} )

apache_mpm=$(awk -F’: +’ ‘$1~/^Server MPM/{print $2}’ ${HTTPD_V_TMPFILE} )

apache_server_version=$(awk -F’: +’ ‘$1~/^Server version/{print $2}’ ${HTTPD_V_TMPFILE} )

config_file=’/etc/httpd/conf/httpd.conf’

# Thank you to Rob Wilderspin for this magic…

eval $(awk ‘/\<IfModule prefork.c\>/,/<\/IfModule/ \

{/^ServerLimit/ && s=$2; /^MaxClients/ && m=$2} \

END {printf “serverlimit=%d maxclients=%d”, s, m}’ $config_file)

httpd_root=$(awk -F\” ‘/HTTPD_ROOT/ {print $2}’ $HTTPD_V_TMPFILE)

httpd_server_config_file=$(awk -F\” ‘/SERVER_CONFIG_FILE/ {print $2}’ $HTTPD_V_TMPFILE)

httpd_default_errorlog=$(awk -F\” ‘/DEFAULT_ERRORLOG/ {print $2}’ $HTTPD_V_TMPFILE)

# Dan Farmer created this logic to find the size of each additional apache in memory.

apacheuser=$(ps -ef|awk ‘/httpd/ && !/root/ {print $1}’ | uniq)

num_of_apache_children=$(ps -u $apacheuser -o pid= | wc -l)

apache_in_ram=$(ps -u $apacheuser -o pid= | xargs pmap -d | awk ‘/private/ {c+=1; sum+=$4} END {printf “%.2f”, sum/c/1024}’)

apache_footprint=$(echo $apache_in_ram*$num_of_apache_children | bc -l)

ram_at_maxc=$(echo $maxclients*$apache_in_ram|bc -l)

mem_percentage_at_max=$(echo $ram_at_maxc/$memtotal_mb*100 | bc -l)

# echo $mem_percentage_at_max

if [ -f /etc/php.ini ]; then

php_meml=$(awk ‘/^memory_limit/ {print $3}’ /etc/php.ini);

else

echo “Checking for /etc/php.ini Not found”;

fi

http_binary=$(netstat -plnt |grep :80|awk -F/ ‘{print $2′})

# =================================== DISPLAY SECTION ===================================

echo “

=========================SYSTEM=========================”

echo “$system

“

# This was written specifically for a Rackspace environment

if [ -f /root/.rackspace/server_number ]; then

echo “Server Number: $server_number

“

fi

echo “Server Name: $server_name

Total Physical Memory: $memtotal_mb MB

=========================APACHE=========================”

echo “Version: $apache_server_version

RPM: $server_httpd_rpm

httpd binary: $(which $http_binary)

Whats running on port 80 $(netstat -plnt |grep :80|awk ‘{print $7}’)

Apache Architecture: $apache_architecture”

echo “Serverlimit is: $serverlimit

MaxClients is: $maxclients”

echo “httpd root $httpd_root

httpd server config file $httpd_root/$httpd_server_config_file

httpd default errorlog $httpd_root/$httpd_default_errorlog”

echo “

=========================PHP============================

/etc/php.ini memory_limit is: $php_meml

=====================APACHE RUNTIME=====================

Apache user: $apacheuser

Average Memory use: $apache_in_ram MB per child

Number of children: $num_of_apache_children

=========================REPORT==========================

Current memory footprint $apache_footprint MB

Maximum memory footprint $ram_at_maxc MB ($(printf %0.f $mem_percentage_at_max)% of installed RAM)

System memory divided by MaxClients $(printf %0.00f $(echo $memtotal_mb/$maxclients |bc -l))

System memory divided by Apache child size $(printf %0.f $(echo $memtotal_mb/$apache_in_ram | bc -l))

“

rm “$HTTPD_V_TMPFILE”

echo