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Improve installation process
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* Improve installation process
* Bump nagios version to 4.4.1
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@aschbacd
aschbacd committed Jul 4, 2018
1 parent ae33aab commit dbcf934
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292 changes: 165 additions & 127 deletions autoinstall-nagioscore.sh
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# ///// ******************** FUNCTIONS ******************** ///// #

function print_installing {
echo -en "[ ...... ] - installing package $1"
function determine_package_manager {
declare -A osInfo;
osInfo[/etc/redhat-release]=yum
osInfo[/etc/arch-release]=pacman
osInfo[/etc/gentoo-release]=emerge
osInfo[/etc/SuSE-release]=zypp
osInfo[/etc/debian_version]=apt-get

for f in ${!osInfo[@]}
do
if [[ -f $f ]];then
package_manager=${osInfo[$f]}
fi
done
}

function print_start {
# PARAMETER 01 ... text (what will happen)

echo -en "[ ...... ] $1"
}

function print_installed {
if [ $1 -eq 0 ] ; then
echo -en "\r[ \e[32mOK\e[0m ] - $2 installed successfully"
else
echo -en "\r[ \e[31mFAILED\e[0m ] - $2 could not be installed"
fi
echo
function print_finished {
# PARAMETER 01 ... 0 or 1 -> succeeded or failed
# PARAMETER 02 ... text if succeeded
# PARAMETER 03 ... text if failed

if [ $1 -eq 0 ] ; then
echo -en "\r[ \e[32mOK\e[0m ] $2"
else
echo -en "\r[ \e[31mFAILED\e[0m ] $3"
fi

echo
}

function execute {
# PARAMETER 01 ... text (what will happen)
# PARAMETER 02 ... text if succeeded
# PARAMETER 03 ... text if failed
# PARAMETER 04 ... critical command -> 0 ... yes / 1 ... no
# PARAMETER 05 ... command that will be executed
# PARAMETER 06 ... command that checks if first command worked (optional)

print_start "$1"

eval $5 1>>"$base_dir/autoinstall-nagioscore.log" 2>>"$base_dir/autoinstall-nagioscore.error"
exit_code=$?
if [ $# -eq 6 ] ; then
eval $6 1>>"$base_dir/autoinstall-nagioscore.log" 2>>"$base_dir/autoinstall-nagioscore.error"
exit_code=$?
fi

print_finished $exit_code "$2" "$3"

# stop script if critical error
if [ $4 -eq 0 ] && [ $exit_code -ne 0 ] ; then
echo "[ INFO ] script had to be stopped due to a fatal error"
exit 1
fi
}

function install_package {
print_installing $1
apt-get install -y $1 1>>install.log 2>>install.error
print_installed $? $1
# PARAMETER 01 ... package name
# PARAMETER 02 ... critical command -> 0 ... yes / 1 ... no
execute "installing package $1" "package $1 installed successfully" "package $1 could not be installed" $2 "$package_manager install -y $1" "dpkg -s $1"
}

function create_directory {
# PARAMETER 01 ... directory path
# PARAMETER 02 ... directory name
execute "creating $2" "$2 created successfully" "$2 could not be created" 0 "mkdir $1" "[ -d \"$1\" ]"
}

function download_file {
# PARAMETER 01 ... filename
# PARAMETER 02 ... download url
execute "downloading file $1" "$1 downloaded successfully" "$1 could not be downloaded" 0 "wget -O $1 $2" "[ -f \"$1\" ]"
}

function extract_file {
# PARAMETER 01 ... file to be extracted
# PARAMETER 02 ... folder to check for
execute "extracting file $1" "$1 extracted successfully" "$1 could not be extracted" 0 "tar xzvf $1" "[ -d \"$2\" ]"
}

function restart_service {
# PARAMETER 01 ... service name
# PARAMETER 02 ... critical command -> 0 ... yes / 1 ... no
execute "restarting service $1" "service $1 restarted successfully" "service $1 could not be restarted" $2 "systemctl restart $1"
}


# ///// ******************** INITIAL SETUP ******************** ///// #
base_dir=$(pwd)
determine_package_manager
echo "[ INFO ] package manger $package_manager is being used for all package installations."

# ///// ******************** NAGIOS4 INSTALLATION ******************** ///// #

# install dependencies
install_package apache2
install_package apache2-utils
install_package php
install_package build-essential
install_package autoconf
install_package gcc
install_package libc6
install_package make
install_package wget
install_package unzip
install_package libgd2-xpm-dev

# add nagios user & group
useradd nagios && groupadd nagcmd
usermod -a -G nagcmd nagios && usermod -a -G nagcmd www-data
install_package apache2 0
install_package apache2-utils 0
install_package php 0
install_package build-essential 0
install_package autoconf 0
install_package gcc 0
install_package libc6 0
install_package make 0
install_package wget 0
install_package unzip 1
install_package libgd-dev 0

# add nagios user
execute "adding user nagios" "user nagios added successfully" "user nagios could not be added" 0 "useradd nagios" "id -u nagios"

# add nagios group
execute "adding group nagcmd" "group nagcmd added successfully" "group nagcmd could not be added" 0 "groupadd nagcmd" "grep -q nagcmd /etc/group"

# add nagios to nagcmd
execute "adding nagios to nagcmd" "user nagios successfully added to nagcmd" "user nagios could not be added to nagcmd" 0 "usermod -a -G nagcmd nagios" "groups nagios | grep -w nagcmd"

# add www-data to nagcmd
execute "adding www-data to nagcmd" "user www-data successfully added to nagcmd" "user www-data could not be added to nagcmd" 1 "usermod -a -G nagcmd www-data" "groups www-data | grep -w nagcmd"


# download and extract nagios4
mkdir /opt/nagios
create_directory "/opt/nagios" "nagios download folder"
cd /opt/nagios
wget -O nagioscore.tar.gz https://github.com/NagiosEnterprises/nagioscore/releases/download/nagios-4.4.0/nagios-4.4.0.tar.gz
tar xzf nagioscore.tar.gz
cd nagios-4.4.0
download_file "nagioscore.tar.gz" "https://github.com/NagiosEnterprises/nagioscore/releases/download/nagios-4.4.1/nagios-4.4.1.tar.gz"
extract_file "nagioscore.tar.gz" "nagios-4.4.1"
cd nagios-4.4.1

# install and configure nagios4
./configure --with-nagios-group=nagios --with-command-group=nagcmd --with-httpd_conf=/etc/apache2/sites-enabled/
make all
make install
make install-init
make install-commandmode
make install-config
make install-webconf
a2enmod rewrite && a2enmod cgi
execute "configuring apache2" "apache2 configured successfully" "apache2 could not be configured" 0 "./configure --with-nagios-group=nagios --with-command-group=nagcmd --with-httpd_conf=/etc/apache2/sites-enabled/"
execute "compiling nagios4" "nagios4 compiled successfully" "nagios4 could not be compiled" 0 "make all && make install && make install-init && make install-commandmode && make install-config && make install-webconf"
execute "enabling apache2 modules" "apache2 modules enabled successfully" "apache2 modules could not be enabled" 0 "a2enmod rewrite && a2enmod cgi"

# nagios4 web interface
htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
systemctl restart apache2.service
loop=true
while [ $loop == true ] ; do
password1=$(whiptail --passwordbox $error"Enter a password for the nagios web interface." 8 78 3>&1 1>&2 2>&3)
password2=$(whiptail --passwordbox "Retype your password." 8 78 3>&1 1>&2 2>&3)
if [ ! $password1 ] || [ ! $password2 ] || [ $password1 == "" ] || [ $password2 == "" ] ; then
whiptail --ok-button "Retry" --msgbox "Password can't be empty!" 10 30
elif [ $password1 == $password2 ] ; then
loop=false
else
whiptail --ok-button "Retry" --msgbox "Passwords don't match" 10 30
fi
done

execute "setting apache2 nagios admin user" "nagios admin user set successfully" "nagios admin user could not be set" 0 "htpasswd -b -c /usr/local/nagios/etc/htpasswd.users nagiosadmin $password1"
restart_service "apache2" 0

# ///// ******************** NAGIOS4 PLUGINS ******************** ///// #

# install dependencies
install_package libmcrypt-dev
install_package libssl-dev
install_package bc
install_package gawk
install_package dc
install_package snmp
install_package libnet-snmp-perl
install_package gettext
install_package libmcrypt-dev 0
install_package libssl-dev 0
install_package bc 0
install_package gawk 0
install_package dc 0
install_package snmp 0
install_package libnet-snmp-perl 0
install_package gettext 0

# download nagios4 plugins
cd /opt/nagios
wget --no-check-certificate -O nagios-plugins.tar.gz https://github.com/nagios-plugins/nagios-plugins/archive/release-2.2.1.tar.gz
tar zxf nagios-plugins.tar.gz
download_file "nagios-plugins.tar.gz" "https://github.com/nagios-plugins/nagios-plugins/archive/release-2.2.1.tar.gz"
extract_file "nagios-plugins.tar.gz" "nagios-plugins-release-2.2.1"
cd nagios-plugins-release-2.2.1
./tools/setup
./configure
execute "configuring nagios4 plugins" "nagios4 plugins configured successfully" "nagios4 plugins could not be configured" 0 "./tools/setup && ./configure"

# compile nagios4 plugins
make
make install
execute "compiling nagios4 plugins" "nagios4 plugins compiled successfully" "nagios4 plugins could not be compiled" 0 "make && make install"

# start nagios
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
systemctl enable nagios
systemctl reload nagios
systemctl start nagios
execute "starting service nagios" "service nagios started successfully" "service nagios could not be started" 0 "/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg && systemctl enable nagios ; systemctl reload nagios ; systemctl start nagios"

# ///// ******************** [OPTIONAL] NAGIOS4 NRPE PLUGIN ******************** ///// #

function install_nrpe {
mkdir /opt/nagios/
if (whiptail --title "Nagios4 NRPE Plugin" --yesno "Do you want to install the Nagios Remote Plugin Executor on your machine, so that you can run script on another system?" 8 78) then
cd /opt/nagios/
wget -O nagios-nrpe.tar.gz https://github.com/NagiosEnterprises/nrpe/releases/download/nrpe-3.2.1/nrpe-3.2.1.tar.gz
tar xzf nagios-nrpe.tar.gz
download_file "nagios-nrpe.tar.gz" "https://github.com/NagiosEnterprises/nrpe/releases/download/nrpe-3.2.1/nrpe-3.2.1.tar.gz"
extract_file "nagios-nrpe.tar.gz" "nrpe-3.2.1"
cd nrpe-3.2.1/
./configure
make check_nrpe
make install-plugin
}

echo -e "\n"
read -p "Do you want to install the nrpe plugin? [Y/n]: " nrpe
if [ $nrpe ] ; then
loop=true
while [ $loop == true ] ; do
case "$nrpe" in
[yY] | [yY][eE][sS])
install_nrpe
loop=false
;;
[nN] | [nN][oO])
loop=false
;;
*)
echo "[Error] Please enter yes or no."
;;
esac
if [ $loop == true ] ; then
read -p "Do you want to install the nrpe plugin? [Y/n]: " nrpe
fi
done
else
install_nrpe
execute "configuring nrpe plugin" "nrpe plugin configured successfully" "nrpe plugin could not be configured" 0 "./configure"
execute "compiling nrpe plugin" "nrpe plugin compiled successfully" "nrpe plugin could not be compiled" 0 "make check_nrpe && make install-plugin"
restart_service "nagios" 0
fi

# ///// ******************** [OPTIONAL] LOAD CUSTOM CONFIGURATION ******************** ///// #
# ///// ******************** [OPTIONAL] LOAD PREDONE CONFIGURATION ******************** ///// #

function load_configuration {
mkdir /opt/nagios/
if (whiptail --title "Load predone configuration" --yesno "Do you want to load the predone configuration that contains a better organized folder structure for your nagios configuration files?" 8 78) then
cd /opt/nagios/
wget https://github.com/aschbacd/autoinstall-nagioscore/releases/download/v4.4.1/config.tar.gz
tar xzf config.tar.gz
download_file "config.tar.gz" "https://github.com/aschbacd/autoinstall-nagioscore/releases/download/v4.4.1/config.tar.gz"
extract_file "config.tar.gz" "config"
cd /usr/local/nagios/etc/
rm -r objects cgi.cfg nagios.cfg resource.cfg
execute "removing old configuration" "old configuration removed successfully" "old configuration could not be removed" 0 "rm -r objects cgi.cfg nagios.cfg resource.cfg"
cd /opt/nagios/config/
mv objects /usr/local/nagios/etc/
mv cgi.cfg /usr/local/nagios/etc/
mv nagios.cfg /usr/local/nagios/etc/
mv resource.cfg /usr/local/nagios/etc/
systemctl restart nagios
}

echo -e "\n"
read -p "Do you want to load the custom configuration? [Y/n]: " config
if [ $config ] ; then
loop=true
while [ $loop == true ] ; do
case "$config" in
[yY] | [yY][eE][sS])
load_configuration
loop=false
;;
[nN] | [nN][oO])
loop=false
;;
*)
echo "[Error] Please enter yes or no."
;;
esac
if [ $loop == true ] ; then
read -p "Do you want to load the custom configuration? [Y/n]: " config
fi
done
else
load_configuration
execute "applying new configuration" "new configuration applied successfully" "new configuration could not be applied" 0 "mv objects /usr/local/nagios/etc/ && mv cgi.cfg /usr/local/nagios/etc/ && mv nagios.cfg /usr/local/nagios/etc/ && mv resource.cfg /usr/local/nagios/etc/"
restart_service "nagios" 0
fi

echo "[ INFO ] nagios has been installed correctly. configuration folder /usr/local/nagios"
2 changes: 1 addition & 1 deletion config/nagios.cfg
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##############################################################################
#
# NAGIOS.CFG - Main Config File for Nagios 4.3.4
# NAGIOS.CFG - Main Config File for Nagios
#
# Read the documentation for more information on this configuration
# file. I've provided some comments here, but things may not be so
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