{"id":1294,"date":"2009-10-12T20:55:34","date_gmt":"2009-10-13T01:55:34","guid":{"rendered":"http:\/\/jianmingli.com\/wp\/?p=1294"},"modified":"2013-02-05T10:16:43","modified_gmt":"2013-02-05T15:16:43","slug":"using-nagios","status":"publish","type":"post","link":"https:\/\/jianmingli.com\/wp\/?p=1294","title":{"rendered":"Using Nagios"},"content":{"rendered":"
\n

Contents<\/h2>\n
    \n\t\t
      \n\t\t\t
    1. \n\t\t\t\tTerminology<\/a>\n\t\t\t<\/li>\n\t\t\t
    2. \n\t\t\t\tSoft and Hard States<\/a>\n\t\t\t<\/li>\n\t\t\t
    3. \n\t\t\t\tConfiguration<\/a>\n\t\t\t\t
        \n\t\t\t\t\t
      1. \n\t\t\t\t\t\t\/etc\/nagios\/nagios.cfg<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t<\/ol>\n\t\t\t
      2. \n\t\t\t\tWeb Interfaces<\/a>\n\t\t\t<\/li>\n\t\t\t
      3. \n\t\t\t\tPlugins<\/a>\n\t\t\t\t
          \n\t\t\t\t\t
        1. \n\t\t\t\t\t\tcheck_ping<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        2. \n\t\t\t\t\t\tcheck_tcp<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        3. \n\t\t\t\t\t\tcheck_pop, check_spop, check_imap, check_simap<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        4. \n\t\t\t\t\t\tcheck_smtp<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        5. \n\t\t\t\t\t\tcheck_ftp<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        6. \n\t\t\t\t\t\tcheck_dhcp<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        7. \n\t\t\t\t\t\tcheck_nagios<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        8. \n\t\t\t\t\t\tcheck_http<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        9. \n\t\t\t\t\t\tcheck_mysql<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        10. \n\t\t\t\t\t\tcheck_pgsql<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        11. \n\t\t\t\t\t\tcheck_oracle<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        12. \n\t\t\t\t\t\tcheck_swap<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        13. \n\t\t\t\t\t\tcheck_ide_smart<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        14. \n\t\t\t\t\t\tcheck_disk<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        15. \n\t\t\t\t\t\tcheck_disk_smb<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        16. \n\t\t\t\t\t\tcheck_disk<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        17. \n\t\t\t\t\t\tcheck_procs<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        18. \n\t\t\t\t\t\tMonitor Logged In User<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t<\/ol>\n<\/ol>\n\t\t\t
        19. \n\t\t\t\tReferences<\/a>\n\t\t\t<\/li>\n<\/ol>\n<\/div>\n
           <\/div>\n

          Terminology<\/h2><\/span>\n

          * Commands
          \n* Time periods
          \n* Contacts and Contact Groups
          \n* Host
          \n* Services
          \n* Host and service escalations<\/p>\n

          Soft and Hard States<\/h2><\/span>\n

          * Defines how many retries before escalate soft to hard state<\/p>\n

          Configuration<\/h2><\/span>\n

          \/etc\/nagios\/nagios.cfg<\/h3><\/span>\n

          Web Interfaces<\/h2><\/span>\n

          * Tactical Overview
          \n* Status Map
          \n* Host information<\/p>\n

          Plugins<\/h2><\/span>\n

          check_ping<\/h3><\/span>\n
          \r\n# Command. -H: host, \r\n# -w: warn, wrta: warn return time average, wpl%: warn packet loss percentage\r\n# -c: cirtical, -crta: critial return time average, cpl%: critical packet loss percentage\r\n# -p packet, -t timeout\r\n# -4|-6: ipv4 or ipv6\r\ncheck_ping -H  -w ,% -c ,% [-p packets] [-t timeout] [-4|-6]\r\n\r\n# For example, ping localhost with 5 packets, \r\n# warn if 1 packet returns in 3 seconds, \r\n# Output critical if 0 packet returns in 5 seconds:\r\n$ check_ping -H localhost -w 3000.0,80% -c 5000.0,100% -p 5\r\nPING OK - Packet loss = 0%, RTA = 0.06 ms|rta=0.058000ms;3000.000000;5000.000000;0.000000 pl=0%;80;100;0\r\n<\/pre>\n
          check_tcp<\/h3><\/span>\n
          \r\ncheck_tcp|check_udp -H host -p port [-w ] [-c ]\r\n           [-s ] [-e ] [-q ]\r\n           [-A] [-m ] [-d ] [-t ]\r\n           [-r ] [-M ] [-v] [-4|-6] \r\n           [-j] [-D ] [-S] [-E]\r\n\r\n# For example, check localhost on port 80\r\ncheck_tcp -H localhost -p 80\r\nTCP OK - 0.000 second response time on port 80|time=0.000220s;;;0.000000;10.000000\r\n<\/pre>\n
          check_pop, check_spop, check_imap, check_simap<\/h3><\/span>\n
          * Similar to check_tcp<\/p>\n
          \r\n<\/pre>\n
          check_smtp<\/h3><\/span>\n
          * Similar to check_tcp
          \n* Port defaults to 25 <\/p>\n
          \r\ncheck_smtp -H host [-p port] [-C command] [-R response] [-f from addr]\r\n           [-F hostname] [-A authtype \u2013U authuser \u2013P authpass]\r\n           [-w ] [-c ] [-t timeout]\r\n           [-S] [-D days] [-n] [-4|-6]\r\ncheck_smtp -H smtp.my.com -p 25\r\n<\/pre>\n
          check_ftp<\/h3><\/span>\n
          * Similar to check_tcp
          \n* Port defaults to 21 ot 990 for ssl
          \n* Expect standard FTP welcome message<\/p>\n
          \r\ncheck_ftp -H ftp.my.com\r\n<\/pre>\n
          check_dhcp<\/h3><\/span>\n
          check_nagios<\/h3><\/span>\n
          check_http<\/h3><\/span>\n
          \r\ncheck_http -H  | -I  [-u ] [-p ]\r\n           [-w ] [-c ] [-t ]  \r\n           [-L] [-a auth] [-f ]  \r\n           [-e ] [-s string] [-l]  \r\n           [-r  | -R ] [-P string]\r\n           [-m :]  \r\n           [-4|-6] [-N] [-M ] [-A string] [-k string] [-S]  \r\n           [-C ] [-T ]\r\n# Examples\r\ncheck_http -H www.yahoo.com -p 80\r\ncheck_http -H coe-soa-1 -p 9900 -u \/ms\/index.do\r\n<\/pre>\n
          check_mysql<\/h3><\/span>\n
          \r\ncheck_mysql [-H host] [-d database] [-P port]\r\n            [-u user] [-p password] [-S]\r\n\r\ncheck_mysql_query -q SQL_query [-w ] [-c ] [-d database]\r\n                  [-H host] [-P port] [-u user] [-p password]\r\n<\/pre>\n
          check_pgsql<\/h3><\/span>\n
          \r\n check_pgsql [-H ] [-P ] [-w ] [-c ]\r\n             [-t ] [-d ] [-l ]  \r\n             [-p ]\r\n<\/pre>\n
          check_oracle<\/h3><\/span>\n
          * Need Oracle client installation (tnsping)<\/p>\n
          \r\ncheck_oracle --tns \r\n             --db \r\n             --oranames \r\n             --login \r\n             --cache     \r\n             --tablespace   \r\n                            \r\n<\/pre>\n
          check_swap<\/h3><\/span>\n
          Check virtual memory.<\/p>\n
          \r\ncheck_swap [-a] [-v] -w limit -c limit\r\n# -a: all\r\n# -w limit: warn if swap fall below limit\r\n# -c limit: critical if swap fall below limit\r\n<\/pre>\n
          check_ide_smart<\/h3><\/span>\n
          \r\ncheck_ide_smart [-d ] [-i] [-q] [-1] [-O] [-n]\r\n<\/pre>\n
          check_disk<\/h3><\/span>\n
          Check disk space.<\/p>\n
          \r\ncheck_disk \r\n  -w limit # warn if below limit\r\n  -c limit  # critical if below limit\r\n  [-W limit] # warn if inode below limit\r\n  [-K limit] # critical if inode below limit\r\n  {-p path # -p path or partition, can be repeated\r\n              | -x device} # -x exclude path\r\n  [-C] # clear thresholds\r\n  [-E] # only checks for exact path as specified by -p\r\n  [-e] # displays errors only\r\n  [-g group ] \r\n  [-k] # kb\r\n  [-l] # check local file system only\r\n  [-M] # displays mount point instead of path\r\n  [-m] # mb\r\n  [-r path ] # regex for path\/partition, can be repeated\r\n  [-R path ] # as -r but case insensitive\r\n  [-t timeout] # in seconds, default to 10\r\n  [-u unit] #  bytes, kB, MB, GB, TB, default to MB\r\n  [-v] # verbose\r\n  [-X type] # exclude file type, can be repeated\r\n\r\n# Examples\r\ncheck_disk -w 500 -c 10 -p \/tmp\r\nDISK OK - free space: \/tmp 4449 MB (96% inode=99%);| \/tmp=140MB;4340;4830;0;4840\r\n<\/pre>\n
          check_disk_smb<\/h3><\/span>\n
          Check disk space on remote shares.<\/p>\n
          \r\ncheck_disk_smb -H  -s  -u  -p  \r\n      -w  -c  [-W ] [-P ]\r\n<\/pre>\n
          check_disk<\/h3><\/span>\n
          Check system load.<\/p>\n
          \r\ncheck_load \r\n  [-r] # divide load average by number of CPUs\r\n  -w WLOAD1,WLOAD5,WLOAD15 # warn if load averages exceed 1, 5, 15 min averages\r\n  -c CLOAD1,CLOAD5,CLOAD15 # critical if load averages exceed 1, 5,, 15 min averages\r\n\r\n# Example, warn if 1min load average exceeds 10, 5min 8, 15min 5\r\n# critical if 1min load average exceeds 15, 5min 10, 15min 8\r\ncheck_load -w 10.0,8.0,5.0 -c 15.0,10.0,8.0\r\n<\/pre>\n
          check_procs<\/h3><\/span>\n
          \r\ncheck_procs \r\n  -w  # warn if outside range\r\n  -c   # critical if outside range\r\n  [-m metric] # metric type: PROCS, VSZ, RSS, CPU, ELAPSED\r\n  [-s state] # only scan for processes with one or more status flags form ps command\r\n  [-p ppid] # only scan for child processes of parent ppid \r\n  [-u user] # only scan for user or user id\r\n  [-r rss] # only scan for processes with rss higher than indicated\r\n  [-z vsz] # only scan for processes with vsz higher than indicated\r\n  [-P %cpu] # only scan for processes with pcpu higher than indicated\r\n  [-a argument-array] # only scan for processes with args that contain string\r\n  [-C command] # only scan for exact matches of command\r\n  [-t timeout] # timeout\r\n  [-v]\r\n\r\n# Example\r\n# Alert if CPU of any processes over 10% or 20%\r\ncheck_procs -w 10 -c 20 --metric=CPU\r\n<\/pre>\n
          Monitor Logged In User<\/h3><\/span>\n
          \r\ncheck_users -w limit -c limit\r\n\r\n# Example, warn if one user logged in, critical if 1 user logged in\r\ncheck_users -w 0 -c 1\r\n#USERS WARNING - 1 users currently logged in |users=1;0;1;0\r\n<\/pre>\n
          References<\/h1><\/span>\n
          http:\/\/www.debianhelp.co.uk\/nagiosinstall.htm<\/a>
          \nLearning Nagios 3.0: A Detailed Tutorial to Setting Up, Configuring, and Managing This Easy and Effective System Monitoring Software by Wojciech Kocjan
          \n          http:\/\/nagios.sourceforge.net\/docs\/3_0\/toc.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
          Terminology * Commands * Time periods * Contacts and Contact Groups * Host * Services * Host and service escalations Soft and Hard States * Defines how many retries before escalate soft to hard state Configuration \/etc\/nagios\/nagios.cfg Web Interfaces * … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"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":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[62],"tags":[63],"class_list":["post-1294","post","type-post","status-publish","format-standard","hentry","category-infra","tag-nagios"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8cRUO-kS","_links":{"self":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1294"}],"version-history":[{"count":7,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1294\/revisions"}],"predecessor-version":[{"id":7185,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/1294\/revisions\/7185"}],"wp:attachment":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}