{"id":153,"date":"2011-11-24T20:20:00","date_gmt":"2011-11-24T20:20:00","guid":{"rendered":"http:\/\/pheonixsolutions.com\/?p=153"},"modified":"2011-11-24T20:20:00","modified_gmt":"2011-11-24T20:20:00","slug":"working-of-nagios-basic","status":"publish","type":"post","link":"https:\/\/pheonixsolutions.com\/blog\/working-of-nagios-basic\/","title":{"rendered":"Working of Nagios &#8211; Basic"},"content":{"rendered":"<div dir=\"ltr\" style=\"text-align: left;\" trbidi=\"on\"><\/p>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">  *  Nagios  gives the detailed information about the services running in the server. For example, Number of<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">     processes, Number of Users, Disk capacity, etc. These Services are configured by us.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\"> *  We have setup Nagios to show the Unknown, Critical and warning errors of various services.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\"> *  The Errors are shown based on the Configuration in the Nagios Set up file. <\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\"> *  In the event of a failure of any services, Nagios can alert us the problem, allowing us to begin remediation processes before outages  affect our business processes, end-users, or customers.\u00c2\u00a0<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">To  Check the Nagios file,<\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">1) SSH to the server.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">2) The Nagios Set up file will be located in the following path in all the servers \/usr\/local\/nagios\/etc\/nrpe.cfg<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\"> <\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">vi \/usr\/local\/nagios\/etc\/nrpe.cfg<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">3) The Various Services that are configured using Nagios are available in this nrpe.cfg file. It also contains location of the coding files of various services.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">The Snippet below is an example:<\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">================================================<\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_users]=\/usr\/local\/nagios\/libexec\/check_users -w 5 -c 10<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_load]=\/usr\/local\/nagios\/libexec\/check_load -w 2,4,8 -c 4,6,8<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_disk]=\/usr\/local\/nagios\/libexec\/check_disk -w 20% -c 10% -p \/dev\/sda<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_zombie_procs]=\/usr\/local\/nagios\/libexec\/check_procs -w 5 -c 10 -s Z<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_total_procs]=\/usr\/local\/nagios\/libexec\/check_procs -w 380 -c 430<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_smart_sda]=\/usr\/local\/nagios\/libexec\/check_ide_smart -d \/dev\/sda -n<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_smart_sdb]=\/usr\/local\/nagios\/libexec\/check_ide_smart -d \/dev\/sdb -n<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_var]=\/usr\/local\/nagios\/libexec\/check_disk -w 10% -c 5% -p \/dev\/sda2<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_tmp]=\/usr\/local\/nagios\/libexec\/check_disk -w 10% -c 5% -p \/dev\/sda5<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">command[check_root]=\/usr\/local\/nagios\/libexec\/check_disk -w 10% -c 5% -p \/dev\/sda1<\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">=================================================<\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">These are the example services that we have running on our Server. The location of the Script for that particular command is also given.<\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">Note:<\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">-w &#8211; indicate warnings when the given limit is reached<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">-c &#8211; indicate critical when the given limit is reached <\/span><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt; font-weight: 600;\">Let us see the explanation for a command.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">[check_users]=\/usr\/local\/nagios\/libexec\/check_users -w 5 -c 10<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">This command shows that Nagios will check for the number of Users on the Server.\u00c2\u00a0<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">If the number of users reaches 5 it will show warning.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">If the number of users reaches 10 it will show critical.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">The Command check_users will act based in the script available in \/usr\/local\/nagios\/libexec\/check_users.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><span style=\"font-family: 'DejaVu Sans'; font-size: 9pt;\">The script can be edited according to our requirment.<\/span><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<div style=\"font-family: 'DejaVu Sans'; font-size: 9pt; margin: 0px; text-indent: 0px;\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>* Nagios gives the detailed information about the services running in the server. For example, Number of processes, Number of Users, Disk capacity, etc. These Services are configured by us. * We have setup Nagios to show the Unknown, Critical and warning errors of various services. * The Errors are&hellip; <a href=\"https:\/\/pheonixsolutions.com\/blog\/working-of-nagios-basic\/\" class=\"more-link read-more\" rel=\"bookmark\">Continue Reading <span class=\"screen-reader-text\">Working of Nagios &#8211; Basic<\/span><i class=\"fa fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-153","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-uncategorized","7":"h-entry","9":"h-as-article"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pheonix Solutions - We Empower Your Business Growth<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pheonixsolutions.com\/blog\/working-of-nagios-basic\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pheonix Solutions - We Empower Your Business Growth\" \/>\n<meta property=\"og:description\" content=\"* Nagios gives the detailed information about the services running in the server. 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