Ensure that you have the following installed:
\nhttpd, gcc, glibc, glibc-common, gd, gd-devel<\/p>\n
Create accounts and groups.
\nuseradd -m nagios
\npasswd nagios
\ngroupadd nagcmd
\nusermod -a -G nagcmd nagios
\nusermod -a -G nagcmd apache<\/p>\n
Build nagios from the source.
\ncd \/usr\/local\/src
\nDownload nagios and nagios-plugins from http:\/\/www.nagios.org\/download\/ to \/usr\/local\/src.
\ntar -zxvf nagios-3.0.5.tar.gz
\ncd nagios-3.0.5
\n.\/configure –with-command-group=nagcmd
\nmake all 2>&1 | tee MAKEALL.log
\nmake install 2>&1 | tee MAKEINSTALL.log
\nmake install-init 2>&1 | tee MAKEINSTALLINIT.log
\nmake install-config 2>&1 | tee MAKEINSTALLCONFIG.log
\nmake install-commandmode 2>&1 | tee MAKEINSTALLCOMMANDMODE.log
\ncd \/usr\/local\/nagios\/etc\/objects\/
\ncp -rp contacts.cfg contacts.cfg.orig
\nvi contacts.cfg
\nhtpasswd -c \/usr\/local\/nagios\/etc\/htpasswd.users nagiosadmin
\ncd \/usr\/local\/src\/nagios-3.0.5
\nmake install-webconf 2>&1 | tee MAKEINSTALLWEBCONF.log
\nservice httpd restart
\ncd ..
\ntar -zxvf nagios-plugins-1.4.13.tar.gz
\ncd nagios-plugins-1.4.13
\n.\/configure –with-nagios-user=nagios –with-nagios-group=nagios
\nmake 2>&1 | tee MAKE.log
\nmake install 2>&1 | tee MAKEINSTALL.log
\nchkconfig –add nagios
\nchkconfig nagios on<\/p>\n
This is a great way to debug errors in your configuration files:
\n\/usr\/local\/nagios\/bin\/nagios -v \/usr\/local\/nagios\/etc\/nagios.cfg<\/p>\n
service nagios start<\/p>\n
I created configuration files based the template.cfg provided in the distribution in the objects directory.
\ncd \/usr\/local\/nagios\/etc\/objects\/<\/p>\n
You have to make changes to your nagios.cfg file based on any new configuration files you created above.
\nvi ..\/nagios.cfg<\/p>\n
Check your configuration:
\n\/usr\/local\/nagios\/bin\/nagios -v \/usr\/local\/nagios\/etc\/nagios.cfg<\/p>\n
You have restart nagios whenever you make a change to the configuration files.
\nservice nagios restart<\/p>\n
Installed NSClient on a Windows 2003 server to monitor it in nagios.
\nhttp:\/\/files.nsclient.org\/x-0.3.x\/NSClient%2B%2B-Win32-0.3.5.msi
\nEdit nsc.ini. The file is pretty well documented.<\/p>\n
The following is how I installed nrpe on a linux system to allow nagios to monitor it.
\nInstall nrpe to allow nagios access to system status
\ncd \/usr\/local\/src
\nwget http:\/\/internap.dl.sourceforge.net\/sourceforge\/nagios\/nrpe-2.12.tar.gz
\nuseradd nagios
\npasswd nagios
\nwget http:\/\/superb-east.dl.sourceforge.net\/sourceforge\/nagiosplug\/nagios-plugins-1.4.13.tar.gz
\ntar zxvf nagios-plugins-1.4.13.tar.gz
\ncd nagios-plugins-1.4.13
\n.\/configure 2>&1 | tee CONFIGURE.log
\nmake 2>&1 | tee MAKE.log
\nmake install 2>&1 | tee MAKEINSTALL.log
\nchown nagios.nagios \/usr\/local\/nagios
\nchown -R nagios.nagios \/usr\/local\/nagios\/libexec\/
\ncd ..
\ntar zxvf nrpe-2.12.tar.gz
\ncd nrpe-2.12
\n.\/configure 2>&1 | tee CONFIGURE.log
\nmake all 2>&1 | tee MAKEALL.log
\nmake install-plugin 2>&1 | tee MAKEPLUGIN.log
\nmake install-daemon 2>&1 | tee MAKEDAEMON.log
\nmake install-daemon-config 2>&1 | tee MAKEDAEMONCONFIG.log
\nmake install-xinetd 2>&1 | tee MAKEXINETD.log
\nvi \/etc\/xinetd.d\/nrpe
\n…
\n only_from = 127.0.0.1 192.168.0.3
\n…
\nvi \/etc\/services
\n…
\nnrpe 5666\/tcp # NRPE
\n…
\nyum install xinetd
\nservice xinetd start
\nnetstat -at | grep nrpe<\/p>\n
Verify nrpe is working:
\n\/usr\/local\/nagios\/libexec\/check_nrpe -H localhost
\n\/usr\/local\/nagios\/libexec\/check_nrpe -H localhost -c check_users
\n\/usr\/local\/nagios\/libexec\/check_nrpe -H localhost -c check_load<\/p>\n
Add customized commands to support the machine
\nvi \/usr\/local\/nagios\/etc\/nrpe.cfg
\n…
\n# Customized for this machine
\ncommand[check_users]=\/usr\/local\/nagios\/libexec\/check_users -w 5 -c 10
\ncommand[check_load]=\/usr\/local\/nagios\/libexec\/check_load -w 15,10,5 -c 30,25,20
\ncommand[check_hda1]=\/usr\/local\/nagios\/libexec\/check_disk -w 20% -c 10% -p \/dev\/hda1
\ncommand[check_hda2]=\/usr\/local\/nagios\/libexec\/check_disk -w 20% -c 10% -p \/dev\/hda2
\ncommand[check_hdd1]=\/usr\/local\/nagios\/libexec\/check_disk -w 20% -c 10% -p \/dev\/hdd1
\ncommand[check_hdd2]=\/usr\/local\/nagios\/libexec\/check_disk -w 20% -c 10% -p \/dev\/hdd2
\ncommand[check_hdd5]=\/usr\/local\/nagios\/libexec\/check_disk -w 20% -c 10% -p \/dev\/hdd5
\ncommand[check_zombie_procs]=\/usr\/local\/nagios\/libexec\/check_procs -w 5 -c 10 -s Z
\ncommand[check_total_procs]=\/usr\/local\/nagios\/libexec\/check_procs -w 150 -c 200
\ncommand[check_mailq_timeout]=\/usr\/local\/nagios\/libexec\/check_mailq -M postfix -w 5 -c 15
\ncommand[check_mailq]=\/usr\/local\/nagios\/libexec\/check_mailq -w 10 -c 20
\ncommand[check_procs_named]=\/usr\/local\/nagios\/libexec\/check_procs -C named -t 3 -w 1:1
\n…<\/p>\n","protected":false},"excerpt":{"rendered":"
Ensure that you have the following installed: httpd, gcc, glibc, glibc-common, gd, gd-devel Create accounts and groups. useradd -m nagios passwd nagios groupadd nagcmd usermod -a -G nagcmd nagios usermod -a -G nagcmd apache Build nagios from the source. cd \/usr\/local\/src Download nagios and nagios-plugins from http:\/\/www.nagios.org\/download\/ to \/usr\/local\/src. tar -zxvf nagios-3.0.5.tar.gz cd nagios-3.0.5 .\/configure [&hellip<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[40,79,78,80,81],"class_list":["post-354","post","type-post","status-publish","format-standard","hentry","category-documentation","tag-centos","tag-installation","tag-nagios","tag-nrpe","tag-nsclient"],"share_on_mastodon":{"url":"","error":""},"_links":{"self":[{"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=\/wp\/v2\/posts\/354","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=354"}],"version-history":[{"count":1,"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=\/wp\/v2\/posts\/354\/revisions"}],"predecessor-version":[{"id":355,"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=\/wp\/v2\/posts\/354\/revisions\/355"}],"wp:attachment":[{"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jim-zimmerman.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}