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Check Cisco WLC Access Points
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If it finds an AP that was on the WLC that it was not expecting to find, it throws a 'warning'.
It's customizable, but I chose this method, since what typically happens when there is a WLC problem is AP's begin roaming around to various WLC's that are all part of the same mobility group. This can yield a lot of alerts, if you specify 'Critical' for both AP's missing AND AP's found unexpectedly.
I wrote it in Python. The usage is fairly simple, just populate a file in your conf.d directory called "wlc--aps_expected.
Note, this relies on netsnmp and the correct mibs to be installed. This is currently for AirOS WLC's only.
usage: check_wlc_ap.py -H -f
/etc/nagios3/commands.cfg:
define command{
command_name check_wlc_ap
command_line /usr/lib/nagios/plugins/check_wlc_ap.py -H $HOSTADDRESS$ -f $ARG1$
}
Note, in order for me to get the correct email output I needed to modify the "service macro" to include "long" output...meaning, instead of a single line in the result email it will include all the lines that are put to stdout (in my case all the ap's that are missing)
vi /etc/nagios3/commands.cfg:
under 'notify-service-by-email' I added "LONGSERVICEOUTPUT" directly after " "SERVICEOUTPUT". Resulting command is as follows:
# 'notify-service-by-email' command definition
define command{
command_name notify-service-by-email
command_line /usr/bin/printf "%b" "***** Nagios *****nnNotification Type: $NOTIFICATIONTYPE$nnService: $SERVICEDESC$nHost: $HOSTALIAS$nAddress: $HOSTADDRESS$nState: $SERVICESTATE$nnDate/Time: $LONGDATETIME$nnAdditional Info:n$SERVICEOUTPUT$n$LONGSERVICEOUTPUT$" | /usr/bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$
}
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