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Line 162: − − ==== Update from Nagios 2 to Nagios 3 ==== − Before installing this contrib based on Nagios 3, remove all packages of the previous Nagios 2 installation − service nagios stop − service nagiosgrapher stop − − /usr/bin/yum erase \ − nagios-plugins-esx3i \ − nagios-nrpe \ − nagios-plugins-temptrax \ − nagios-plugins \ − nagios-of-plugins \ − nagios-plugins-generic \ − nagios smeserver-nagios-nrpe \ − smeserver-nagios \ − smeserver-nagios-plugins-mysql \ − nagios-plugins-nrpe \ − nagios-plugins-setuid \ − smeserver-nagiosgrapher \ − smeserver-nagios-backup − Remove all NagiosGrapher rrd data. It is not possible to tranfer the existing NagiosGrapher data to PNP. − rm -rf /var/lib/nagios/* − Backup your Nagios configuration data − cp -a /etc/nagios /etc/nagios.v2 − Delete Nagios configuration data − rm -rf /etc/nagios − Move the retention data to the new Nagios 3 loaction − mkdir -p /var/nagios/ − mv /var/log/nagios/retention.dat /var/nagios/ − − '''Now install this contrib following the instructions in chapter 'Installation' − ''' − service nagios stop − Delete the default configuration files − cd /etc/nagios − rm -rf commands/default.cfg \ − objects \ − contacts/contacts.cfg \ − hostgroups/default.cfg \ − hosts/localhost.cfg \ − servicegroups/default.cfg \ − services/localhost.cfg \ − templates/default.cfg \ − timeperiods/default.cfg − − Copy your saved configuration files to /etc/nagios. When you place them into the pre-defined directories contacts, services, hostgroups, templates, commands, hosts, servicegroups, and timeperiods you don't need to adjust nagios.cfg. − − Review your config files and do the following − * add <tt>'''use host-pnp'''</tt> to your generic host definition to add an action url for PNP to all hosts. − * for all services that output performance data add <tt>'''action_url /nagios/pnp/index.php?host=$HOSTNAME$&srv=$SERVICEDESC$'''</tt> to your service template definitions − * move all options from <tt>'''hostextinfo'''</tt> definition (except <tt>'''host_name'''</tt> and <tt>'''action_url'''</tt>) to <tt>'''host'''</tt> definition. Delete the <tt>'''hostextinfo'''</tt> definition. − * do the same for <tt>'''serviceextinfo'''</tt> definitons − − When done check your config − nagios -v /etc/nagios/nagios.cfg − and finally start the service − service nagios start
→Update from Nagios 2 to Nagios 3
* It is a good idea to make your Nagios server as independent as possible from the infrastructure it monitors, i.e., use a dedicated hardware, network, mail- and pager system, firewall and internet connection if possible.
* It is a good idea to make your Nagios server as independent as possible from the infrastructure it monitors, i.e., use a dedicated hardware, network, mail- and pager system, firewall and internet connection if possible.
* Consider to setup a second Nagios somewhere on your network, which monitors your central Nagios server. Then you need to install the NRPE also on the central server.
* Consider to setup a second Nagios somewhere on your network, which monitors your central Nagios server. Then you need to install the NRPE also on the central server.
==== Backup and Restore ====
==== Backup and Restore ====