Install icinga srver

wget https://raw.githubusercontent.com/panticz/installit/master/install.icinga.sh -O - | bash -

#!/bin/bash

# ensure that this script is run by root
if [ $(id -u) -ne 0 ]; then
  sudo $0
  exit
fi

debconf-set-selections <<\EOF
postfix postfix/mailname string $(hostname)
postfix postfix/main_mailer_type select Internet Site
icinga-common icinga/check_external_commands select false
icinga-cgi icinga/adminpassword-repeat string icingaadmin
icinga-cgi icinga/adminpassword string icingaadmin
icinga-cgi icinga/httpd select apache2
EOF

# install the latest version 
. /etc/os-release
if [ "${ID}" == "debian" ]; then
  # add debmon.org Icinga repository
  DIST=$(grep PRETTY_NAME /etc/os-release | cut -d "(" -f2 | cut -d ")" -f1)
  echo "deb http://debmon.org/debmon debmon-${DIST} main" > /etc/apt/sources.list.d/debmon.list
  wget -q http://debmon.org/debmon/repo.key -O - | apt-key add -
  apt-get update
fi

# install icinga
apt-get install -y icinga

# disable double log output to syslog
sed -i 's|use_syslog=1|use_syslog=0|g' /etc/icinga/icinga.cfg

# show 1000 results by default
sed -i 's|result_limit=50|result_limit=1000|g' /etc/icinga/cgi.cfg

# restart icinga
/etc/init.d/icinga restart

# redirect by default to /icinga/
echo 'RedirectMatch "^/$" "/icinga/"' >> /etc/apache2/conf-available/icinga.conf

# allow "Re-schedule Next Host Check" from Icinga webgui
sed -i 's|check_external_commands=0|check_external_commands=1|g' /etc/icinga/icinga.cfg
chmod 2710 /var/lib/icinga/rw

# restart werbserver
service apache2 restart

Admin login
http://YOUR_IP/icinga/
user: icingaadmin
pass: icingaadmin

Icinga Apache configuration
/etc/apache2/conf-available/icinga.conf

Icinga repository
http://packages.icinga.org/

Enable automatic updates
# http://www.panticz.de/debian-ubuntu-automatic-upgrades
wget -q --no-check-certificate https://raw.githubusercontent.com/panticz/scripts/master/enable_auto_update.sh -O - | bash -

configure contact
sed -i 's|root@localhost|YOUR@EMAIL-ADDRESS.com|g' /etc/icinga/objects/contacts_icinga.cfg

change password
htpasswd -c /etc/icinga/htpasswd.users icingaadmin

plugins
http://www.panticz.de/Icinga-plugins

LDAP
a2enmod authnz_ldap

echo "pass1234" > /etc/apache2/ldap_password.inc
chmod 600 /etc/apache2/ldap_password.inc

sed -i 's|=icingaadmin|=*|g' /etc/icinga/cgi.cfg

/etc/icinga/apache2.conf
- AuthUserFile /etc/icinga/htpasswd.users
+ AuthBasicProvider ldap
+ AuthLDAPBindDN "ldap@example.com"
+ AuthLDAPBindPassword "exec:/bin/cat /etc/apache2/ldap_password.inc"
+ AuthLDAPURL "ldap://ldap.example.com:3268/dc=example,dc=com?sAMAccountName?sub?(objectClass=*)" NONE
+ AuthLDAPRemoteUserIsDN off
+ Require ldap-group CN=IPG.DevOps,OU=_IntranetPermissionGroups,DC=example,DC=com

service apache2 restart

# config
https://wiki.icinga.org/display/Dev/Icinga+Core+Debug+Config

# cgi
http://docs.icinga.org/latest/de/cgiparams.html#cgiparams-ahas
http://icinga.example.com/cgi-bin/icinga/status.cgi?servicestatustypes=20&noheader=1

Links
http://www.debmon.org/ - Debian Monitoring Project
http://packages.debian.org/wheezy/icinga
http://packages.icinga.org/debian/ - Icinga repository
https://www.icinga.org/icinga2/ - Icinga 2 preview
http://www.sysadminslife.com/monitoring-2/icinga-1-9-installation-unter-debian-squeeze-wheezy-aktuellste-version/