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Nagios XI - Downgrading Nagios Core

Overview

This KB article explains how to downgrade the version of Nagios Core that runs on your Nagios XI server.

Specifically this relates to the Nagios XI 5.5.x release that comes with Nagios Core 4.4.x. Currently Nagios Core 4.4.x is not compatible with Mod Gearman (MG), to allow Nagios XI 5.5.x to run MG the version of Nagios Core needs to be downgraded to 4.2.4.

 

Downgrade

The following steps will downgrade Nagios Core to 4.2.4, please be aware that the Nagios service is stopped during this procedure and hence there will be no monitoring performed.

You need to stop the nagios service using one of the commands below:

RHEL/CentOS 6.x

service nagios stop

 

RHEL/CentOS 7.x

systemctl stop nagios.service

 

The following steps will downgrade Nagios Core:

sed -i 's/^lock_file=.*/lock_file=\/usr\/local\/nagios\/var\/nagios.lock/g' /usr/local/nagios/etc/nagios.cfg
cd /tmp
rm -rf nagiosxi xi*
wget https://assets.nagios.com/downloads/nagiosxi/5/xi-5.4.13.tar.gz
tar xzf xi-5.4.13.tar.gz
cd nagiosxi
./init.sh
cd subcomponents/nagioscore
./upgrade
chmod +x /etc/init.d/nagios

 

Once these steps have completed the Nagios service will automatically be started and monitoring will resume.

 

 

Final Thoughts

For any support related questions please visit the Nagios Support Forums at:

http://support.nagios.com/forum/

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