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Nagios Core 4.08 don't send traps in order.
Posted: Fri Jul 22, 2016 5:44 am
by Nagios_Admin_M
Hey,
I send traps from Nagios Core 4.08. I use values and variables in order as follow, but they are send in different order. The values need to be send exactly as they are specified.
Code: Select all
command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$ | var2=$HOSTNAME$ var3=$HOSTSTATEID$ var4=$HOSTSTATETYPE$ var5=$LASTHOSTCHECK$ var6=$HOSTDURATIONSEC$ var7=$LASTHOSTSTATECHANGE$ var8=$LASTHOSTSTATECHANGE$ var9=$HOSTATTEMPT$ var10=$HOSTDOWNTIME$ var11=$HOSTSTATE$ /usr/bin/test_trap
Code: Select all
#test_trap
./send_trap
# send_trap
#!/bin/bash
/usr/bin/snmptrap -v 2c -c $1 $ncprobe '' NAGIOS-NOTIFY-MIB::nSvcEvent nSvcHostname s "$2" nHostStateID i $3 nSvcDesc s "$4" nSvcStateID i $5 nSvcAttempt i $6 nSvcDurationSec i $7 nSvcGroupName s "$8" nSvcLastCheck i $9 nSvcLastChange i ${10} nSvcOutput s "${11}"
Re: Nagios Core 4.08 don't send traps in order.
Posted: Fri Jul 22, 2016 12:28 pm
by tgriep
I found this URL with instructions on how to setup Nagios to send SNMP Traps. Take a look at it and see if it helps out in the issue you are having.
http://askaralikhan.blogspot.com/2010/0 ... agios.html
Re: Nagios Core 4.08 don't send traps in order.
Posted: Mon Jul 25, 2016 3:35 am
by Nagios_Admin_M
The url doesn't correlate current projects scripts and it was updated.
I try to do it such a way:
STEP I - I modify command file:
define command{
command_name notify-host-by-email
command_line var2=$HOSTNAME$ var3=$HOSTSTATEID$ var4=$SERVICEDESC$ var5=$SERVICESTATEID$ var6=$SERVICEATTEMPT$ var7=$SERVICEDURATIONSEC$ var8=$SERVICEGROUPNAME$ var9=$LASTSERVICECHECK$ var10=$LASTSERVICESTATECHANGE$ var11=$SERVICEOUTPUT$ /usr/bin/my_script
}
STEP II this is snmptrap file configuration:
/usr/bin/snmptrap -v 2c -c $1 $ncprobe '' NAGIOS-NOTIFY-MIB::nSvcEvent nSvcHostname s "$2" nHostStateID i $3 nSvcDesc i "$4" nSvcStateID i $5 nSvcAttempt i $6 nSvcDurationSec i $7 nSvcGroupName s "$8" nSvcLastCheck i $9 nSvcLastChange i ${10} nSvcOutput s "${11}"
STEP III - log file out put:
ServerName 0 $ $ $ $ $ $ $ $
The SERVICEDESC - is not assign by Nagios and returns a dolar in the log file. I have also used SERVICEDESC in different location and moved it into var 4,6,7 etc. with no result. In my opinion Nagios doesn't posses this value and not pass it to the snmptrap cript.
Re: Nagios Core 4.08 don't send traps in order.
Posted: Mon Jul 25, 2016 1:28 pm
by tgriep
In step 1, the commands should be setup like this. One command to send the Host trap and one to send the service trap. Your example will not work as the variables are not after the script's command.
The keyword called manager in the examples below, would be the hostname or IP address of the system you want to send the SNMP Traps to.
Code: Select all
# 'send-service-trap' command definition
define command{
command_name send-service-trap
command_line /usr/local/bin/send-service-trap manager public "$HOSTNAME$" "$SERVICEDESC$" $SERVICESTATEID$ "$SERVICEOUTPUT$"
}
Code: Select all
# 'send-host-trap' command definition
define command{
command_name send-host-trap
command_line /usr/local/bin/send-host-trap manager public "$HOSTNAME$" $HOSTSTATEID$ "$HOSTOUTPUT$"
}
Then the scripts have to be defined like the following
Code: Select all
===/usr/local/bin/send-service-trap ====
# Arguments:
# $1 = Management Station
# $2 = Community String
# $3 = host_name
# $4 = service_description (Description of the service)
# $5 = return_code (An integer that determines the state
# of the service check, 0=OK, 1=WARNING, 2=CRITICAL,
# 3=UNKNOWN).
# $6 = plugin_output (A text string that should be used
# as the plugin output for the service check)
#
#
/usr/bin/snmptrap -v 2c -c $2 $1 '' NAGIOS-NOTIFY-MIB::nSvcEvent nSvcHostname s "$3" nSvcDesc s "$4" nSvcStateID i $5 nSvcOutput s "$6"
===/usr/local/bin/send-host-trap=======
Code: Select all
# Arguments:
# $1 = Management Station
# $2 = Community String
# $3 = host_name
# $4 = HostStatID A number that corresponds to the current state of the host: 0=UP, 1=DOWN, 2=UNREACHABLE.
# $5 = HOSTOUTPUT The first line of text output from the last host check (i.e. "Ping OK").
#
#
/usr/bin/snmptrap -v 2c -c $2 $1 '' NAGIOS-NOTIFY-MIB::nHostEvent nHostname s "$3" nHostStateID i $4 nHostOutput s "$5"
If you want to send more variables than what the snmptrap application can do, you will have to concatenate them and send it as one argument is that is possible.
Re: Nagios Core 4.08 don't send traps in order.
Posted: Tue Jul 26, 2016 6:20 am
by Nagios_Admin_M
Hey,
I add an entry to the commands.cfg file as follow:
# 'send-host-trap' command definition
define command{
command_name send-host-trap
command_line /usr/local/bin/send-host-trap manager public "$HOSTNAME$" $HOSTSTATEID$ "$HOSTOUTPUT$"
}
to the contacts.cfg
3 define contact {
74 contact_name test_contact
75 use generic-contact
76 alias test_alias
77 email @email
78 can_submit_commands 1
79 service_notification_options w,u,c,r
80 host_notification_options d,u,r
81 host_notification_commands send-host-trap
82 }
and further more I did created the send-host-trap
1 #!/bin/sh
2 /usr/bin/snmptrap -v 2c -c $2 $1 '' NAGIOS-NOTIFY-MIB::nHostEvent nHostname s "$3" nHostStateID i $4 nHostOutput s "$5"
3 cat << EOF >> /logfile
4 Hello World
5 EOF
The result is that, the command is not executed by Nagios, the log file is not altered and remains empty also the Nagios'es log file do not include any input.
Re: Nagios Core 4.08 don't send traps in order.
Posted: Tue Jul 26, 2016 6:57 am
by Nagios_Admin_M
I tried to send the $SERVICEDESC$ value through notify-host-by-email, but I can only do it through the notify-service-by-email. Are values of the Nagios'es oits are assigned to an appropriate notify method ?
Re: Nagios Core 4.08 don't send traps in order.
Posted: Tue Jul 26, 2016 10:26 am
by tgriep
Verify that the script you created called
Is executable by the nagios user and that the nagios user account can read it.
Also, the folder where the log file is and the log file, needs to be writable by the nagios user.
The $SERVICEDESC$ macro is only valid for service checks so it will not work for host checks.
Re: Nagios Core 4.08 don't send traps in order.
Posted: Wed Jul 27, 2016 9:10 am
by Nagios_Admin_M
I typed into command line following commands:
1 sudo /usr/bin/snmptrap -v 2c -c 1 MY_HOST '' NAGIOS-NOTIFY-MIB::nSvcEvent nSvcHostname s "$4"
Result: The trap is sent
when I type this command:
2. usr/bin/snmptrap -v 2c -c 1 MY_HOST '' NAGIOS-NOTIFY-MIB::nSvcEvent nSvcHostname s "$2" nSvcDesc s "$4" nSvcStateID i $5 nSvcAttempt i $6 nSvcDurationSec i $7 nSvcGroupName s "$8" nSvcLastCheck i $9 nSvcLastChange i ${10} nSvcOutput s "${11}"
Result:
No log handling enabled - turning on stderr logging nSvcStateID: Value out of range (nSvcAttempt)
Re: Nagios Core 4.08 don't send traps in order.
Posted: Wed Jul 27, 2016 10:35 am
by Nagios_Admin_M
My current commands.cfg
/usr/local/bin/send-service-trap $HOSTNAME$ $SERVICEDESC$ $SERVICEDESC$ $SERVICEATTEMPT$ $SERVICEDURATIONSEC$ $SERVICEGROUPNAME$ $LASTSERVICE CHECK$ $LASTSERVICECHECK$ $SERVICEOUTPUT$
send-service-trap
/usr/bin/snmptrap -v 2c -c 1 My_Host '' NAGIOS-NOTIFY-MIB::nSvcEvent nSvcHostname s "$2" nSvcDesc s "$4" nSvcStateID i $5 nSvcAttempt i $6 nSvcDurationSec i $7 nSvcGroupName s "$8" nSvcLastCheck i $9 nSvcLastChange i ${10} nSvcOutput s "${11}"
After I execute this command in the command line:
No log handling enabled - turning on stderr logging
nSvcStateID: Value out of range (nSvcAttempt)
Re: Nagios Core 4.08 don't send traps in order.
Posted: Wed Jul 27, 2016 10:54 am
by Nagios_Admin_M
Ok, all I need to do is to send trap in this order.
nHostname nHostStateID nSvcDesc nSvcStateID nSvcAttempt nSvcDurationSec nSvcGroupName nSvcLastCheck nSvcLastChange nSvcOutput
How can I do it ?