Nagios Support Forum • Migrate Nagios from Fedora to Ubuntu

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Migrate Nagios from Fedora to Ubuntu

Posted: Thu Sep 03, 2015 11:57 am

by eduardo.vazquez

Hi experts,

In this moment I have Nagios installed on Fedora 12, but due to need of homologate my distros, I have the need to migrate Nagios from Fedora 12 to Ubuntu 14. Also i have the critical need of preserve all data info (logs, settings, etc.). My question is: Is possible make this migration? and, Exists some specific method to make it?

Thanks so much.

Re: Migrate Nagios from Fedora to Ubuntu

Posted: Thu Sep 03, 2015 12:08 pm

by jolson

This migration is certainly possible, but it's hard to tell you exactly what needs to happen without knowing exactly how Nagios is set up on your Fedora box in the first place.

What I'd like to offer you is a set of full installation instructions for Ubuntu - this way you can stand up a Nagios box on Ubuntu and work on getting your data to it from your Fedora box.

Installation instructions (for Ubuntu 14.04 and above):

Log in as the super user:

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sudo -i

Install all pre-requisite packages:

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apt-get --ignore-missing install wget build-essential apache2 php5-gd libgd2-xpm-dev libapache2-mod-php5 unzip m4 automake libtool gettext apache2-utils

Change to the tmp directory, and download Nagios Core and Nagios Plugins:

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cd /tmp
wget https://github.com/NagiosEnterprises/nagioscore/archive/master.tar.gz -O nagioscore.tar.gz
wget https://github.com/nagios-plugins/nagios-plugins/archive/master.tar.gz -O nagiosplugins.tar.gz

Add the appropriate user and group for the Nagios process (we recommend 'nagios' and 'nagcmd'), and assign 'nagios' and apache to the nagcmd group:

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useradd nagios
groupadd nagcmd
usermod -a -G nagcmd nagios
usermod -a -G nagcmd www-data

Run the following commands to unpack the Nagios Core and Nagios Plugins source code into tmp:

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tar xzf nagioscore.tar.gz
tar xzf nagiosplugins.tar.gz

Change to the Nagios Core directory:

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cd nagioscore-master

Run the configure command to get the source code ready for compilation:

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./configure --with-command-group=nagcmd --with-nagios-group=nagios --with-mail=/usr/bin/sendmail

Compile and install:

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make all
make install
make install-init
make install-config
make install-commandmode

Complete the installation:

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/usr/bin/install -c -m 644 sample-config/httpd.conf /etc/apache2/sites-enabled/nagios.conf
cp -R contrib/eventhandlers /usr/local/nagios/libexec
chown -R nagios:nagios /usr/local/nagios/libexec/eventhandlers
a2enmod rewrite
a2enmod cgi

Run the Nagios verification command to ensure the install completed properly:

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/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Start Nagios:

Ubuntu 14

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/etc/init.d/nagios start

Ubuntu 15

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/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg

Add a default user for web interface access, and start apache (we recommend calling the user 'nagiosadmin'):

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htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin
/etc/init.d/apache2 restart

Change to the Nagios Plugins directory to compile and install the plugins:

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cd /tmp/nagios-plugins-master/
./tools/setup
./configure --with-nagios-user=nagios --with-nagios-group=nagios
make
make install

Register the Nagios service and Apache to be run upon system startup:

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ln -s /etc/init.d/apache2 /etc/rcS.d/S99apache2
ln -s /etc/init.d/nagios /etc/rcS.d/S99nagios