Radar – add hosts and services automatically

WHAT IS IT WORTH? ----------------- this script generates automated config files with host and service definitions for nagios from passively received host and service checks. This might be useful if your nagios system runs in a distributed environment with nagios instances sending passive checks to a central nagios server or if you have many hosts sending passive checks. Normally, hosts and services based on passive checks must be configured both on the nagios instance receiving the checks and on the instance sending the checks This script uses received passive checks to create automated host and service definitions in the nagios configuration. This way the configuration of the implied hosts and services must only be made on the instance that sends the passive checks Moreover this script can be used to make nagios and Munin work together. You can run a Munin server and a nagios server in parallel. The munin server sends its results as passive checks to the nagios server. Then the corresponding service and host definitions are generated and included in the nagios configuration. HOW DOES IT WORK? ----------------- The instance that sends passive checks must send them to the NSCA of the central nagios server. So be sure you have configured the NSCA correctly When a pssive check result is received by the nagios instance and the corresponding host and service respectively does not exist in the nagios configuration an error occurs and is written to the nagios log file. the radar script parses the nagios log file for these errors and uses them to generate automated host and service definitions in the nagios configuration. As long as nagios is not reloaded passive host and service checks keep causing errors in the nagios log file. Thus, to avoid multiple host and service definitions for the same host or service, the radar script parses the entire nagios configuration. As the nagios configuration may be very large the script gets active only every fifteen minutes, working in the background as a daemon. The time interval can be set to any desired value. When running the radar script it is run in daemon mode instantly. So use an init script to start/stop/restart the daemon TEMPLATES --------- the radar script only generates rudimentary host and service information. To make them work a host and service template for the generated hosts and services must be included into the nagios configuration. The names of the templates are set in the configuration of the radar script (see below). You can use the following example templates. define host{ name generic-radar-host notifications_enabled 1 event_handler_enabled 1 flap_detection_enabled 1 failure_prediction_enabled 1 process_perf_data 1 retain_status_information 1 retain_nonstatus_information 1 check_command check-host-alive max_check_attempts 10 check_period 24x7 notification_interval 120 notification_options d,u,r notification_period 24x7 contact_groups admins active_checks_enabled 0 passive_checks_enabled 1 host_groups radarhosts register 0 } define service { name generic-radar-service check_command check_dummy active_checks_enabled 0 passive_checks_enabled 1 parallelize_check 1 obsess_over_service 1 check_freshness 0 notifications_enabled 1 event_handler_enabled 1 flap_detection_enabled 1 failure_prediction_enabled 1 process_perf_data 1 retain_status_information 1 retain_nonstatus_information 1 is_volatile 0 check_period 24x7 max_check_attempts 3 normal_check_interval 10 retry_check_interval 2 contact_groups admins notification_options w,u,c,r notification_interval 120 notification_period 24x7 service_groups radarservices register 0 } CONFIGURATION ------------- absolute path to the nagios log file $NAGIOS_LOGFILE="/usr/local/nagios/var/nagios.log"; the absolute path to the directory where generated cfg-files are to be stored $CFG_DIRECTORY="/usr/local/nagios/etc/objects/radar"; the absolute path to the directory where the nagios cfg files are kept $NAGIOS_CONFIG="/usr/local/nagios/etc/objects/"; the nagios host template to use for generated host definitions $HOST_TEMPLATES="generic-radar-host"; the nagios service template to use for generated service definitions $SERVICE_TEMPLATES="generic-radar-service"; the nagios user $NAGIOS_USER="nagios"; the nagios group $NAGIOS_GROUP="nagios-cmd"; enable/disable logging (1=enabled) $ENABLE_LOGGING=1; directory to put the log file $LOGFILE_DIRECTORY="/var/log/"; directory to put the pid file $PID_FILE_DIRECTORY="/var/run/"; QUESTIONS? ---------- Mail to kevin.fuchs@hs-heilbronn.de

You must be logged in to submit a review.

Your review has been submitted and is pending approval.

Your recommendation has been sent.

Project Overview Project Files Project Notes Reviews