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| | * 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. |
| − |
| |
| − | ==== Update from Nagios 2 to Nagios 3 ====
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| − | Before installing this contrib based on Nagios 3, remove all packages of the previous Nagios 2 installation
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| − | service nagios stop
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| − | service nagiosgrapher stop
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| − |
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| − | /usr/bin/yum erase \
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| − | nagios-plugins-esx3i \
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| − | nagios-nrpe \
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| − | nagios-plugins-temptrax \
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| − | nagios-plugins \
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| − | nagios-of-plugins \
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| − | nagios-plugins-generic \
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| − | nagios smeserver-nagios-nrpe \
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| − | smeserver-nagios \
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| − | smeserver-nagios-plugins-mysql \
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| − | nagios-plugins-nrpe \
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| − | nagios-plugins-setuid \
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| − | smeserver-nagiosgrapher \
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| − | smeserver-nagios-backup
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| − | Remove all NagiosGrapher rrd data. It is not possible to tranfer the existing NagiosGrapher data to PNP.
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| − | rm -rf /var/lib/nagios/*
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| − | Backup your Nagios configuration data
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| − | cp -a /etc/nagios /etc/nagios.v2
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| − | Delete Nagios configuration data
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| − | rm -rf /etc/nagios
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| − | Move the retention data to the new Nagios 3 loaction
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| − | mkdir -p /var/nagios/
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| − | mv /var/log/nagios/retention.dat /var/nagios/
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| − |
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| − | '''Now install this contrib following the instructions in chapter 'Installation'
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| − | '''
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| − | service nagios stop
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| − | Delete the default configuration files
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| − | cd /etc/nagios
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| − | rm -rf commands/default.cfg \
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| − | objects \
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| − | contacts/contacts.cfg \
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| − | hostgroups/default.cfg \
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| − | hosts/localhost.cfg \
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| − | servicegroups/default.cfg \
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| − | services/localhost.cfg \
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| − | templates/default.cfg \
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| − | timeperiods/default.cfg
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| − |
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| − | 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.
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| − |
| |
| − | Review your config files and do the following
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| − | * add <tt>'''use host-pnp'''</tt> to your generic host definition to add an action url for PNP to all hosts.
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| − | * 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
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| − | * 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.
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| − | * do the same for <tt>'''serviceextinfo'''</tt> definitons
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| − |
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| − | When done check your config
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| − | nagios -v /etc/nagios/nagios.cfg
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| − | and finally start the service
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| − | service nagios start
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| | | | |
| | ==== Backup and Restore ==== | | ==== Backup and Restore ==== |
