# Install all prerequisites.
yum -y install make autoconf g++ gcc-c++ libtermcap-devel libgcc-c++ libtool gcc libpng-devel libjpeg-devel libxml1-devel libxml2-devel curl curl-devel libmcrypt libmcrypt-devel libtool-ltdl-devel libxml2.x86_64 libxml2-devel.x86_64 curl-devel.x86_64 openssl-devel

# Download the source files. Sphinx is optional.
mkdir src
cd ~/src
wget http://host.steamr.com/supportfiles/httpd-2.2.21.tar.gz
wget http://host.steamr.com/supportfiles/mysql-5.5.16.tar.gz
wget http://host.steamr.com/supportfiles/php-5.3.8.tar.gz
wget http://host.steamr.com/supportfiles/sphinx-2.0.1-beta.tar.gz

# Extract all archives
for f in `ls *.tar.gz` ; do tar -xzf $f ; done

#
# Setting up apache into /opt/apache
#
cd /root/src/http*/
./configure --prefix=/opt/apache --enable-so --enable-rewrite --enable-ssl --enable-setenvif
make
make install

#
# Setting up MySQL into /opt/mysql.
# Note: MySQL 5.5 and above will require cmake.
#
yum -y install cmake
cd /root/src/mysql*/

# If you wish to compile MySQL with Sphinx, run the following:
cp -R ../sphinx-*/mysqlse/ storage/sphinx
sh BUILD/autorun.sh
./configure --prefix=/opt/mysql --with-plugins=sphinx --with-unix-socket-path=/opt/mysql/mysql.sock --without-man --enable-shared --without-debug --enable-assembler --with-ssl CFLAGS=-O3 'CXXFLAGS=-O3 -fno-exceptions -felide-constructors -fno-rtti' CXX=gcc


# Otherwise, to compile MySQL without Sphinx run:
./configure --prefix=/opt/mysql --with-unix-socket-path=/opt/mysql/mysql.sock --without-man --enable-shared --without-debug --enable-assembler --with-ssl CFLAGS=-O3 'CXXFLAGS=-O3 -fno-exceptions -felide-constructors -fno-rtti' CXX=gcc

make
make install

# Setup the init scripts
/bin/cp support-files/mysql.server /etc/init.d/mysql
chmod 755 /etc/init.d/mysql
ln -s /etc/init.d/mysql /etc/rc3.d/S40mysql

# Copy the default configuration
/bin/cp support-files/my-medium.cnf /etc/my.cnf

# Setup the mysql system account
/usr/sbin/useradd -r mysql

# Update the MySQL permissions
cd /opt/mysql
chown -R mysql .
chgrp -R mysql .

# When setting up the initial database on MySQL 5.4 or earlier, run:
# /opt/mysql/bin/mysql_install_db --user=mysql
# On MySql 5.5 or later, run:
/opt/mysql/scripts/mysql_install_db --user=mysql --basedir=/opt/mysql

# Ensure the new database files created from the previous step is owned by mysql
chown -R mysql /opt/mysql

# Start MySQL manually:
/opt/mysql/bin/mysqld_safe --user=mysql &

#
# MySQL should now be running. You can verify this by running:
# ps -A|grep mysql
#

#
# Set the lib paths of mysql so the libmysqlclient.so or w/e can be found
#
echo "/opt/mysql/lib/mysql" > /etc/ld.so.conf.d/mysql.conf
/sbin/ldconfig

#
# Setting up Sphinx
# NOTE: You must have sphinx compiled with mysql from the previous step.
# You may skip this step if you do not wish to have Sphinx and continue to PHP.
#
cd /root/src/sphinx*
./configure --prefix=/opt/sphinx --with-mysql
make
make install

# The init script used by Sphinx requires sudo.
yum -y install sudo

# Setup the default config
/bin/cp /root/sphinx.conf /opt/sphinx/etc/sphinx.conf

# Setup the init scripts
cp contrib/scripts/searchd /etc/init.d/
chmod 777 /etc/init.d/searchd
ln -s /etc/init.d/searchd /etc/init.d/S55searchd

# Create the sphinx system account and ensure everything under /opt/sphinx/var is owned by sphinx.
useradd -r searchd
cd /opt/sphinx
chown -R searchd:searchd var

#
# Setup PHP as a module for apache:
#
cd /root/src/php*/
./configure --prefix=/opt/php5 --with-apxs2=/opt/apache/bin/apxs --with-config-file-path=/etc/ --with-gd --enable-shmop --enable-track-vars --enable-ftp --enable-sockets --enable-exif --enable-zip --enable-sysvsem --with-zlib --enable-sysvshm --enable-magic-quotes --with-jpeg-dir --with-png-dir --enable-mbstring --enable-embedded-mysqli=shared --with-curl --with-mcrypt --with-mysql=/opt/mysql --with-mysqli=/opt/mysql/bin/mysql_config
# If you want imap support: use options --with-imap --with-imap-ssl=/usr/include/openssl --with-kerberos
make
make install

#
# At this stage, apache should have the PHP module installed.
# NOTE: Since apache does not come with an init script, you must install
# this manually. Refer to http://leo.steamr.com/?p=229 for the complete
# script. Ensure to change the path (in red) to the correct path to httpd.
# In this case, /opt/apache/bin/httpd
#

# using /root as our working directory
cd ~

# download source
wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.3.1.tar.gz
wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.15.tar.gz

# extract source
tar -xzf nagios-3*.tar.gz
tar -xzf nagios-plugins*.tar.gz

# add user 'nagios' as a system user, add apache to the group.
useradd -r -d /usr/local/nagios -s /bin/bash nagios
usermod -G nagios -a apache

# Compile nagios
cd ~/nagios
./configure --with-nagios-user=nagios --with-nagios-grp=nagios
make all
make install
make install-init
make install-config

# Compile nagios plugins
cd ~/nagios-plugins*
./configure
make install

# Configure apache
cd /etc/httpd/conf.d/

# vi nagios.conf (Put the following into nagios.conf):
# ScriptAlias /nagios/cgi-bin/ /usr/local/nagios/sbin/
#
# AllowOverride AuthConfig
# Options ExecCGI
# Allow from all
# Order allow,deny
#
#
# Alias /nagios/ /usr/local/nagios/share/
#
# Options None
# AllowOverride AuthConfig
# Order allow,deny
# Allow from all
#
echo "ScriptAlias /nagios/cgi-bin/ /usr/local/nagios/sbin/" >> nagios.conf
echo "" >> nagios.conf
echo " AllowOverride AuthConfig" >> nagios.conf
echo " Options ExecCGI" >> nagios.conf
echo " Allow from all" >> nagios.conf
echo " Order allow,deny" >> nagios.conf
echo "" >> nagios.conf
echo "" >> nagios.conf
echo "Alias /nagios/ /usr/local/nagios/share/" >> nagios.conf
echo "" >> nagios.conf
echo " Options None" >> nagios.conf
echo " AllowOverride AuthConfig" >> nagios.conf
echo " Order allow,deny" >> nagios.conf
echo " Allow from all" >> nagios.conf
echo "" >> nagios.conf

#
# Protect the nagios directory via htpasswd
#
# CONFIGURATION NOTE:
# The default nagios admin username is 'nagiosadmin'. If you wish
# to change this or add another user to have access to the nagios
# system, be sure to add the username to cgi.cfg as a comma
# delimited list.
#
cd /usr/local/nagios/share/

# vi .htaccess (Put the following into .htaccess)
# AuthName "Nagios Access"
# AuthType Basic
# AuthUserFile /usr/local/nagios/etc/htpasswd.users
# require valid-user
echo "AuthName \"Nagios Access\"" >> .htaccess
echo "AuthType Basic" >> .htaccess
echo "AuthUserFile /usr/local/nagios/etc/htpasswd.users" >> .htaccess
echo "require valid-user" >> .htaccess

cp .htaccess /usr/local/nagios/sbin/
cd /usr/local/nagios/etc/
htpasswd -bc htpasswd.users nagiosadmin defaultpassword
chmod 644 htpasswd.users
chown apache:apache htpasswd.users

# apply apache configuration
/etc/init.d/httpd restart

#
# Configuring Nagios
#
cd /usr/local/nagios/etc/

#
# CONFIGURATION NOTE:
# You will want to edit this file manually. However, to get nagios
# working through apache (via CGI), we will need to enable
# check_external_commands.
#
# vi nagios.cfg
# /check_external_commands
# * Set variable to 1 *
#
sed -i -e 's/check_external_commands=0/check_external_commands=1/g' nagios.cfg

# Create the var directory needed by nagios. If you change the paths in
# nagios.cfg to /var, please change the following command accordingly.
mkdir -p /usr/local/nagios/var/spool/checkresults
mkdir -p /usr/local/nagios/var/rw
chown -R nagios:nagios /usr/local/nagios/var/

#
# CONFIGURATION NOTE:
# As noted above, if you wish to add new users to the system, you
# must edit cgi.cfg and add the appropriate usernames for certain
# access roles.
# Example:
# authorized_for_system_information=nagiosadmin
# will let user 'nagiosadmin' access system information. To add user
# 'newadmin', change the line to:
# authoriozed_for_system_information=nagiosadmin,newadmin
# to let anyone who has authenticated, use *
#
# vi cgi.cfg
#
vi cgi.cfg

# Verify the configuration
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

# If everything from above looks okay, then we should be set to go.
/etc/init.d/nagios start

#
# From here, you should have nagios setup. Going to http://server/nagios/
# should prompt for a username/password and display the nagios web panel.
#
# If you're seeing errors, please refer to the troubleshooting section.
#
# Your next order of business is to configure hosts and services to monitor.
# But that's beyond the scope of this guide.
#