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==Updating from 2.12 to 3.05==
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I was able to successfully update a simple Nagios installation from 2.12 to 3.05 using the following commands:
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<nowiki># save the existing nagios config
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cd /etc
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tar -cvf nagios.tar nagios/*
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# remove nagios 2.12 and install nagios 3.05
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{{Languages}}
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rpm --nodeps -e nagios
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{{WIP box| --[[User:Stephdl|Stephdl]] ([[User talk:Stephdl|talk]]) 13:59, 26 October 2013 (MDT) }}
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yum --enablerepo=dag install nagios
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{{Note box|This contrib was only applied and used on fresh SME (server only mode) install. Conflicts with other installed packages were not examined. The author strongly recommend to install this monitoring system on a dedicated server. It is entirely possible to run it on a virtualized system, which monitors the host itself. In this case you should set up a second Nagios server (acting as a watchdog) on an independent hardware (physically or virtualized) to monitor the main Nagios system}}
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# restore the nagios 2.12 config folder
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=== Maintainer ===
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cd /etc
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Michael Weinberger
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mv nagios nagios.org
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tar xvf nagios.tar
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# comment out the only nagios 2.12 directive that nagios 3.05 complained about
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cd /etc/nagios
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mv nagios.cfg nagios.cfg.org
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sed s/"check_result_buffer_slots"/"# check_result_buffer_slots"/ nagios.cfg.org > nagios.cfg
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# restart nagios and nagiosgrapher
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=== Introduction ===
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service nagiosgrapher restart
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Nagios is a host and service monitor designed to inform you of network problems before your clients, end-users or managers do. [http://www.nagios.org/about/ Read more...]
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service nagios restart</nowiki>
     −
[[User:Mmccarn|Mmccarn]] 23:23, 16 November 2008 (UTC)
     −
==Problem with pre-existing group named 'nagios'==
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This [[Nagios]] contrib installs Nagios Version 3 and was tested on fresh installed SME Server 8.0
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The install scripts failed on my system due to a pre-existing group named 'nagios'.
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It provides all packages needed to setup a SME Server as a central Nagios monitoring server including the graphical performance data analyser [http://www.pnp4nagios.org/start PNP4Nagios].
 +
(Applied this how-to on a fresh SME Server 7.4, works)
   −
During install, I got some errors about "nagios doesn't exist, using root".
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{| cellpadding=10
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| [[Image:Nagios-screenshot-8.png]] || [[Image:Nagios-PNP-Screenshot.gif]] 
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|-
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| Statusmap screenshot of a sample Nagios configuration || PNP Screenshot ''(Source: www.pnp4nagios.org)''
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|}
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I deleted the nagios group, removed and reinstalled the packages, and that worked.
     −
[[User:Mmccarn|Mmccarn]] 21:46, 25 October 2008 (UTC)
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These packages are provided by the contrib. All other dependend packages will be installed via yum from the Centos and DAG repostitories.
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{| style='white-space:nowrap' border="1" cellpadding="3" cellspacing=0
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! Package !! Version !! Build date !! Purpose
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|-
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| smeserver-nagios || 3.2.3-3|| 17 Oct 2013 || Integrates Nagios service into the SME Server
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|-
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| smeserver-nagios || 2.0.0-1 || 17 Nov 2008 || Integrates Nagios service into the SME Server
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|-
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| smeserver-nagios-nrpe || 2.0.0-1 || 17 Nov 2008 || Integrates NRPE service into the SME Server
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|-
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| smeserver-nagios-nsca || 2.0.0-1 || 17 Nov 2008 || Integrates NSCA service into the SME Server (needed in a Distributed Installation)
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|-
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| smeserver-nagios-plugins-mysql || 2.0.0-1 || 18 Nov 2008 || Plugin that checks the mysqld service on a SME Server
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|-
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| smeserver-nagios-backup || 2.0.0-1 || 17 Nov 2008 || Nagios backup integration. Includes Nagios configuration and status data into the SME standard backup
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|-
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| nagios-plugins-temptrax || 2.0.1-1 || 18 Nov 2008 || Plugins for the Sensatronics Ethernet Temperature Devices E4/E16/F
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|-
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| nagios-plugins-esx3i || 1.0.3-0 || 16 Nov 2008 || Plugins to monitor ESXi servers that support the "Common Information Model (CIM)" protocol like Dell PowerEdge 29xx. [http://cars.lostroncos.org/2008/03/07/updated-esx-3i-scripts-for-nagios/ Read more...]
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|-
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| perl-Nagios-Plugin || 0.17-1 || 19 Oct 2007 || A family of perl modules to streamline writing Nagios plugins
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|-
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| nagios-of-plugins || 0.9.4-1 || 08 Jul 2007 || Additional plugins written by [http://www.openfusion.com.au/labs/nagios/ Gavin Carr of Open Fusion]
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|-
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| nagios-plugins-generic || 1.0.0 || 01 Nov 2007 || A generic plugin. [http://www.my-plugin.de/wiki/doku.php/projects:check_generic:start Read more...]
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|-
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| nagios-nuvola-1.0.3.tar.gz  || 1.0.3 || 28 Oct 2007 || Nuvola GUI theme
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|-
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| nagios-icons-nx-1.0.0.tar.gz  || 1.0.0 || 04 Nov 2007 || Additional useful icons, including the SME logo
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|}
 +
 
 +
=== Installation ===
 +
 
 +
{{Note box|The Current version of nagios is 3.2 in smecontribs, there is no plan yet to update this contrib. If you have the skill and the need you should work to update this work to the newer release.}}
 +
 
 +
==== Installation of a central Nagios server ====
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All needed packages are in smecontribs
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yum install --enablerepo=smecontribs smeserver-nagios nagios
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 +
then to configure :
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/bin/cp -ba /etc/nagios/nagios.cfg-smeserver /etc/nagios/nagios.cfg
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/bin/cp -ba /etc/nagios/cgi.cfg-smeserver /etc/nagios/cgi.cfg
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then (optional) :
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cd /tmp
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wget http://repo.openfusion.net/centos5-i386/nagios-of-plugins-0.13.8-1.of.el5.noarch.rpm
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yum localinstall nagios-of-plugins-0.13.8-1.of.el5.noarch.rpm
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then:
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signal-event post-upgrade; signal-event reboot
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alternatively if necessary you can install [[Nagios_NRPE|NRPE]] or [[Nagios_NSCA|NSCA]] addons not yet in smecontribs see [[bugzilla:7644]] or [[bugzilla:7645]]  
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yum install  --enablerepo=smecontribs smeserver-nagios-nrpe
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or
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yum install  --enablerepo=smecontribs smeserver-nagios-nsca
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then
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signal-event post-upgrade; signal-event reboot
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 +
==== Configure the dag repositoy ====
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 +
You need to activate the [[Dag]] reposity before installing this contrib.<br />
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see [[dag|dag repository]] <br />
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 +
 
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===== Install the VMware ESXi Server CIM Hardware Monitoring (optional) =====
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{{Needs review}}
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If you plan to monitor an ESx3i server with CIM compliant hardware, you can configure the ESXi plugin
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  /usr/bin/yum --enable=dag install openssl-devel perl-XML-SAX
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Download and install the [http://www.vmware.com/support/developer/viperltoolkit/ VMware Infrastructure (VI) Perl Toolkit]
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Ignore this warning:
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''The following Perl modules were found on the system but may be too old to work
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with VIPerl:
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URI
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XML::NamespaceSupport''
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It does not affect the proper function of the nagios plugins.
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To get some configuration hints run
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rpm -qi nagios-plugins-esx3i
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==== Hints ====
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* Place all your configuration files in /etc/nagios/ in the sub-directories templates, host, services, etc.
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* Do not change the default pathes of log files, rrd files, etc.. The ''smeserver-nagios-backup'' RPM requires these settings to work properly.
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* Nagios 3 runs host checks that provides performance data. Add this action_url option to each host definiton:
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action_url /nagios/pnp/index.php?host=$HOSTNAME$
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* Add this action_url option to service checks with performance data output
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action_url /nagios/pnp/index.php?host=$HOSTNAME$&srv=$SERVICEDESC$
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* You can permit other users to access Nagios. Add them separated by a comma to the lines
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authorized_for_system_information=admin
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authorized_for_system_commands=admin
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authorized_for_configuration_information=admin
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authorized_for_all_hosts=admin
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authorized_for_all_host_commands=admin
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authorized_for_all_services=admin
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authorized_for_all_service_commands=admin
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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.
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* 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.
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==== Backup and Restore ====
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With the smeserver-nagios-backup RPM installed all Nagios and PNP configuration data, status data and archives are included in the SME Server standard backup. In the pre-backup event those data are copied to the <tt>/home/e-smith/db/nagios/</tt> directory. As the nagios service is stopped during copying it is recommended to configure Nagios to save its scheduling info (next check time) for hosts and services in a file and use this at startup. Otherwise Nagios would re-schedule all checks spreaded over the timeframe defined by <tt>max_service_check_spread</tt> and <tt>max_host_check_spread</tt> (default 30 min). As a result you would have gaps  in checking and visible gaps in the PNP graphes.
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in <tt>/etc/nagios/nagios.cfg</tt> set:
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retain_state_information=1
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state_retention_file=/var/nagios/retention.dat
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use_retained_program_state=1
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use_retained_scheduling_info=1
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When doing a restore, the data from <tt>/home/e-smith/db/nagios/</tt> are copied back to their original locations in the bootstrap-console-save event.
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=== Uninstall ===
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This removes the installed Nagios packages.
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service nagios stop
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rpm -e \
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nagios-of-plugins \
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nagios-plugins-esx3i \
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nagios-plugins-generic \
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nagios-plugins-temptrax \
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perl-Nagios-Plugin \
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pnp \
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smeserver-nagios \
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smeserver-nagios-backup \
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smeserver-nagios-nrpe \
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smeserver-nagios-nsca \
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smeserver-nagios-plugins-mysql \
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nagios-plugins-setuid \
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perl-Config-Tiny
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Remvove the dependencies if not needed by other contribs
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rpm -e \
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fping \
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gd \
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libart_lgpl \
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libmcrypt \
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nagios \
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nagios-nrpe \
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nagios-nsca \
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nagios-nsca-client \
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nagios-plugins \
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nagios-plugins-nrpe \
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perl-Class-Accessor \
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perl-Crypt-DES \
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perl-Math-Calc-Units \
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perl-Net-SNMP \
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perl-Params-Validate \
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perl-rrdtool \
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rrdtool \
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xinetd
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Ignore the warnings about non-existing user nagios and group nagios.
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expand-template /etc/httpd/conf/httpd.conf
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service httpd-e-smith restart
 +
 
 +
=== References ===
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* Nagios NRPE Contrib: [[Nagios NRPE]]
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* Nagios NSCA Contrib: [[Nagios NSCA]]
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* Nagios: http://www.nagios.org/
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* perl-Nagios-Plugin: http://members.financial.com/~cmr/rpmforge/perl-Nagios-Plugin/
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* nagios-of-plugins: http://www.nagiosexchange.org/Plugin_Packages.52.0.html?&tx_netnagext_pi1%5Bp_view%5D=323
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* Nuvola theme: http://www.nagiosexchange.org/Image_Packs.75.0.html?&tx_netnagext_pi1%5Bp_view%5D=252&tx_netnagext_pi1%5Bpage%5D=10%3A10
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* Temptrax Plugin: http://www.nagiosexchange.org/cgi-bin/page.cgi?g=1716.html
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* Nagios books: ''"Nagios : system and network monitoring / Wolfgang Barth / ISBN 1-59327-070-4"'', ''"Building a Monitoring Infrastructure with Nagios / David Josephsen / ISBN 0-13-223693-1"''
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* Nagios in a German Computer Magazine: http://www.heise.de/netze/artikel/81238
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* PNP4Nagios: http://www.pnp4nagios.org/pnp/start
 +
----
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<nowiki>[[Category: Contrib]]
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[[Category: Webapps]]
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[[Category: Administration:Monitoring]]
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</nowiki>
Retrieved from "https://wiki.koozali.org/Special:MobileDiff/11543...23414"

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