Install Nagios 3 on Ubuntu 14.04 (Apache 2.4, PHP 7.0)

nagios3-install-ubuntu-14.04.sh

# 1. Install Apache 2.4
export DEBIAN_FRONTEND=noninteractive && apt update && apt full-upgrade -y
apt-get install -y python-software-properties software-properties-common gcc make re2c libpcre3-dev curl sshpass apt-utils
apt-get -y install apache2

# 2. Install custom apt repository for PHP 7.0
apt install -y locales && locale-gen en_US.UTF-8 && locale -a
LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8 add-apt-repository -y ppa:ondrej/php

# 3. Install php 7.0
export DEBIAN_FRONTEND=noninteractive && apt update && apt full-upgrade -y
aptitude install -y pkg-php-tools libapache2-mod-php7.0 php7.0 php7.0-dev php7.0-cgi php7.0-cli php7.0-common php7.0-curl php7.0-gd php7.0-zip php7.0-imap php7.0-intl php7.0-mysql php7.0-pspell php7.0-sqlite3 php7.0-tidy php7.0-opcache php7.0-json php7.0-bz2 php7.0-mcrypt php7.0-readline php7.0-xmlrpc php7.0-enchant php7.0-xsl php7.0-ldap php7.0-mbstring

# 4. Install Nagios 3
# The admin password will be asked during the install process
apt-get -y install nagios3 nagios-plugins-basic

# 5. Configure and restart apache2 (the default nagios install script reactivate php5 and prevent apache from restarting)
a2dismod php5
a2enmod rewrite
a2enmod php7.0
service apache2 restart

# Access through
# http://<server-ip>/nagios3