nagios notes
Contents |
host definitions
templates
minimal host template
define host {
name linux_server_template
use generic_host
register 0
}
use : the template that this definition inherits from
register: 0 = don't treat it as a real host definition (it's a template)
troubleshooting inheritence
view all attributes inherited for an object in var/objects.cache
regenerated on nagios startup
distributed monitoring
central nagios server - active check are limited or there are none. checks are passive, monitoring data/status is received via "external commands" submitted through ocpd
to be added...
dummy command checks
active/passive checking
Host and Service Freshness Checks
check_freshness 1
freshness_threshold <seconds until unknown/stale state>
add "process_perf_data 1" to generic host and service template on collectors to signal ocpd to tranfer data for checks to central
ocpd pickups writes from checks to files below and transfers them via nsca to central
var/log/nagios/host-perfdata.fifo var/log/nagios/service-perfdata.fifo
config file rc.ocpd
notifications disabled globally for collectors in rc.nagios
send_nsca.cfg contains password for encrypting / decrypting command channel
graphing
Addons for Graphing-and-Trending
Nagios Core - Performance Graphs Using InfluxDB + Nagflux + Grafana + Histou
