Nagios nrpe on Remote host

Atul Kamat atulk at world2web.com
Tue Oct 5 11:00:46 CEST 2004
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Hi Vincent ,
 I`m running the nrpe client as a daemon with the command (no errors)
./nrpe -c nrpe.cfg -d
telnet nyx 5666 works perfectly fine .
i`ve got
nrpe        5666/tcp            # NRPE
in /etc/services

can i have ur check_nrpe definition in services...???
Atul Kamat
Linux Network Engineer,
World2Web Soft Technologies Private Ltd,
e-mail: atulk at world2web.com

> Atul,
> What about your service definition?
> Do you have the "nrpe" entry in the /etc/services?
> My conf is:
> /etc/nsswitch.conf =>
> services:   files nis
>
> % ypcat -k services | grep nrpe
> 5666/tcp nrpe            5666/tcp        # NRPE
>
> If you don't use NIS for your services, you should add the "nrpe" entry
> in the /etc/services file.
>
> Regards,
>
> Vincent Alloo
> TI France Design Systems Operations Manager
> Europe and Middle East IT Services
> Texas Instruments France
>
> E-Mail: v-alloo at ti.com
> Phone: +33 4 93 22 26 97
> Mobile: +33 6 82 13 00 80
>
>> -----Original Message-----
>> From: Atul Kamat [mailto:atulk at world2web.com]
>> Sent: Tuesday, October 05, 2004 7:31 AM
>> To: Alloo, Vincent
>> Cc: nagios-users at lists.sourceforge.net
>> Subject: RE: [Nagios-users] Nagios nrpe on Remote host
>>
>> Hi Vincent,
>>
>>  I`m stuck with the same error....i tried recompiling nrpe and
>> reinstalling nagios-plugins from source on the remote machine but to
> no
>> avail.Followed all the things u mentioned very closely.
>> The error when i run the command "/usr/local/nagios/libexec/check_nrpe
> -H
>> nyx -n -c check_ssh -a nyx" is
>> CHECK_NRPE: Error receiving data from daemon.
>>
>> In the nagios interface i get "(No output returned from plugin)"
>> Regards
>> Atul Kamat
>> Linux Network Engineer,
>> World2Web Soft Technologies Private Ltd,
>> 26, Koramangala Industrial Layout,
>> Bangalore - 560095,
>> INDIA
>> Phone :98860 24705
>> e-mail: atulk at world2web.com
>>
>> > Atul,
>> > I guess you should use:
>> > /usr/local/nagios/libexec/check_nrpe -H nyx -n -c check_ssh -a nyx
>> >
>> > To pass arguments, NRPE should be compiled with correct option
>> > (--enable-command-args), your nrpe conf file should have
>> > "dont_blame_nrpe=1", and your nrpe.conf shoud have this line:
>> > command[check_ssh]=/usr/local/nagios/libexec/check_ssh $ARG1$
>> >
>> > In your checkcommands.cfg, you can use:
>> >
>> > define command {
>> > command_name                   check_nrpe
>> > command_line                   $USER1$/check_nrpe -n -t 10 -H
>> > $HOSTADDRESS$ -c $ARG1$ -a $ARG2$ $ARG3$ $ARG4$
>> > }
>> >
>> > Regards,
>> >
>> > Vincent Alloo
>> > TI France Design Systems Operations Manager
>> > Europe and Middle East IT Services
>> > Texas Instruments France
>> >
>> > E-Mail: v-alloo at ti.com
>> > Phone: +33 4 93 22 26 97
>> > Mobile: +33 6 82 13 00 80
>> >
>> >> -----Original Message-----
>> >> From: Atul Kamat [mailto:atulk at world2web.com]
>> >> Sent: Thursday, September 30, 2004 12:49 PM
>> >> To: Alloo, Vincent
>> >> Cc: atulk at world2web.com; nagios-users at lists.sourceforge.net
>> >> Subject: RE: [Nagios-users] Nagios nrpe on Remote host
>> >>
>> >> Hi Vincent!
>> >>
>> >> The xinetd -nrpe file was exactly the same..so i tried running nrpe
> as
>> > a
>> >> daemon..tried telnetting from the nagios host inot the remote
> machine
>> > and
>> >> it was successful after i fixed the nrpe.cfg file .
>> >> Now my nagios web interface gives the following error
>> >>
>> >> CHECK_NRPE: Error receiving data from daemon.
>> >>
>> >> if i try to run check_nrpe from the command prompt with something
> like
>> >>
>> >>  /usr/local/nagios/libexec/check_nrpe -H nyx -n
>> >> /usr/local/nagios/libexec/check_ssh -H nyx
>> >>
>> >> i get the same error.
>> >>
>> >> Help wanted!!
>> >>
>> >> Atul Kamat
>> >> Linux Network Engineer,
>> >> World2Web Soft Technologies Private Ltd,
>> >> 26, Koramangala Industrial Layout,
>> >> Bangalore - 560095,
>> >> INDIA
>> >> Phone :98860 24705
>> >> e-mail: atulk at world2web.com
>> >> > Atul,
>> >> > I don't know if it can help, but here my nrpe xinetd conf:
>> >> >
>> >> > % cat /etc/xinetd.d/nrpe
>> >> > # default: on
>> >> > # description: The rshd server is the server for the rcmd(3)
> routine
>> >> > and, \
>> >> > #       consequently, for the rsh(1) program.  The server
> provides \
>> >> > #       remote execution facilities with authentication based on
> \
>> >> > #       privileged port numbers from trusted hosts.
>> >> > service nrpe
>> >> > {
>> >> >         flags                   = REUSE
>> >> >         disable                 = no
>> >> >         socket_type             = stream
>> >> >         wait                    = no
>> >> >         user                    = nagios
>> >> >         log_on_failure          += USERID
>> >> >         server                  =  /apps/nagios/nrpe/nrpe
>> >> >         server_args             =  -c
> /db/sysadmin/nagios/nrpe.cfg
>> >> > --inetd
>> >> > }
>> >> >
>> >> > Regards,
>> >> >
>> >> > Vincent Alloo
>> >> > TI France Design Systems Operations Manager
>> >> > Europe and Middle East IT Services
>> >> > Texas Instruments France
>> >> >
>> >> > E-Mail: v-alloo at ti.com
>> >> > Phone: +33 4 93 22 26 97
>> >> > Mobile: +33 6 82 13 00 80
>> >> >> -----Original Message-----
>> >> >> From: Atul Kamat [mailto:atulk at world2web.com]
>> >> >> Sent: Wednesday, September 29, 2004 2:15 PM
>> >> >> To: Alloo, Vincent
>> >> >> Cc: nagios-users at lists.sourceforge.net
>> >> >> Subject: RE: [Nagios-users] Nagios nrpe on Remote host
>> >> >>
>> >> >> Hi Vincent!
>> >> >>
>> >> >>  I made the change as u per your advice . But i`ve got a feeling
>> > that
>> >> > the
>> >> >> preoblem is with the xinetd configuration on the remote host.if
> i
>> >> > check
>> >> >> the /var/log/messages i get the following error:
>> >> >>
>> >> >> Sep 29 17:32:44 phoenix nagios: SERVICE NOTIFICATION:
>> >> > Atul;nyx;/dev/hda1
>> >> >> Free Space;CRITICAL;notify-by-epager;Connection refused by host
>> >> >> Sep 29 17:32:44 phoenix nagios: SERVICE NOTIFICATION:
>> >> > Atul;nyx;/dev/hda1
>> >> >> Free Space;CRITICAL;notify-by-email;Connection refused by host
>> >> >>
>> >> >> The following is what`s in the /etc/xinetd.d/nrpe file
>> >> >>
>> >> >> # default:on
>> >> >> # description:NRPE
>> >> >> service nrpe
>> >> >> {
>> >> >>     flags = REUSE
>> >> >>     socket_type= stream
>> >> >>     wait = no
>> >> >>     user = nagios
>> >> >>     server = /usr/local/nagios/nrpe
>> >> >>     server_args = -i /usr/local/nagios/nrpe.cfg
>> >> >>     log_on_failure+=USERID
>> >> >>     disable = no
>> >> >> }
>> >> >> I also tried changing the user to root...but that didnt help
>> >> > either.The
>> >> >> user nagios exists on the machine
>> >> >>
>> >> >> I havent made ne changes to the nrpe.cfg file except enabled
>> > debugging
>> >> > .
>> >> >> Shud i make ne changed to the nrpe.cfg file??
>> >> >>
>> >> >> the following are the excerpts of the nrpe.cfg file on the
> remote
>> > host
>> >> >> # ALLOWED HOST ADDRESSES
>> >> >> # This is a comma-delimited list of IP address of hosts that are
>> >> > allowed
>> >> >> # to talk to the NRPE daemon.
>> >> >> #
>> >> >> # NOTE: The daemon only does rudimentary checking of the
> client's
>> > IP
>> >> >> #       address.  I would highly recommend adding entries in
> your
>> >> >> #   /etc/hosts.allow file to allow only the specified host to
>> > connect
>> >> >> #   to the port you are running this daemon on.
>> >> >> #
>> >> >> # NOTE: This option is ignored if NRPE is running under either
>> > inetd
>> >> > or
>> >> >> xinetd
>> >> >>
>> >> >> allowed_hosts=127.0.0.1
>> >> >>
>> >> >> does this thing have nething to do with the problem ..
>> >> >> Please Advice
>> >> >>
>> >> >> Atul Kamat
>> >> >> Linux Network Engineer,
>> >> >> World2Web Soft Technologies Private Ltd,
>> >> >> 26, Koramangala Industrial Layout,
>> >> >> Bangalore - 560095,
>> >> >> INDIA
>> >> >> Phone :98860 24705
>> >> >> e-mail: atulk at world2web.com
>> >> >>
>> >> >>
>> >> >> > You should use:
>> >> >> > define command{
>> >> >> >         command_name    check_nrpe
>> >> >> >         command_line    /usr/local/nagios/libexec/check_nrpe
> -H
>> >> >> > $HOSTADDRESS$ -c $ARG1$
>> >> >> >         }
>> >> >> >
>> >> >> > Notice the -H ...
>> >> >> >
>> >> >> > Regards,
>> >> >> >
>> >> >> > Vincent Alloo
>> >> >> > TI France Design Systems Operations Manager
>> >> >>
>> >> >> > Europe and Middle East IT Services
>> >> >> > Texas Instruments France
>> >> >> >
>> >> >> > E-Mail: v-alloo at ti.com
>> >> >> > Phone: +33 4 93 22 26 97
>> >> >> > Mobile: +33 6 82 13 00 80
>> >> >> >> -----Original Message-----
>> >> >> >> From: nagios-users-admin at lists.sourceforge.net
>> >> > [mailto:nagios-users-
>> >> >> admin at lists.sourceforge.net] On Behalf Of Atul Kamat
>> >> >> >> Sent: Wednesday, September 29, 2004 7:57 AM
>> >> >> >> To: nagios-users at lists.sourceforge.net
>> >> >> >> Subject: [Nagios-users] Nagios nrpe on Remote host
>> >> >> >> Hi!
>> >> >> >>   I installed and configured nagios to monitor our servers
> and
>> > it
>> >> > took
>> >> >> > me
>> >> >> >> a whole day thanx to an error in the documentation.
>> >> >> >>   I installed a utility called NRPE so that i cud execute
>> > commands
>> >> > on
>> >> >> >> remote machine.i setup xinetd and installed the plugins on
> the
>> >> > remote
>> >> >> host as well.Below are the excerpts of the:::
>> >> >> >> services.cfg file:
>> >> >> >> define service{
>> >> >> >> 	use				generic-service
>> > ; Name
>> >> >> > of service
>> >> >> >> template to use
>> >> >> >> 	host_name			nyx
>> >> >> >> 	service_description		/dev/hda1 Free Space
>> >> >> >> 	is_volatile			0
>> >> >> >> 	check_period			24x7
>> >> >> >> 	max_check_attempts		3
>> >> >> >> 	normal_check_interval		5
>> >> >> >> 	retry_check_interval		1
>> >> >> >> 	contact_groups			linux-admins
>> >> >> >> 	notification_interval		120
>> >> >> >> 	notification_period		24x7
>> >> >> >> 	notification_options		w,u,c,r
>> >> >> >> 	check_command			check_nrpe!check_disk1
>> >> >> >> 	}
>> >> >> >> checkcommands.cfg file::
>> >> >> >> define command{
>> >> >> >>         command_name    check_nrpe
>> >> >> >>         command_line    usr/local/nagios/libexec/check_nrpe
>> >> >> > $HOSTADDRESS$
>> >> >> >> -c $ARG1$
>> >> >> >>         }
>> >> >> >> nrpe.cfg file on the remote machine::
>> >> >> >> #command i want to execute
>> >> >> >> command[check_disk1]=/usr/local/nagios/libexec/check_disk -w
> 20
>> > -c
>> >> > 10
>> >> >> > -p
>> >> >> >> /dev/hda1
>> >> >> >> could neone tell me what`s going wrong.
>> >> >> >> Nagios display the disk space data of the local machine
> rather
>> > than
>> >> >> > the
>> >> >> >> remote machine.
>> >> >> >> Thanx,
>> >> >> >> Warm Regards
>> >> >> >> Atul Kamat
>> >> >> >> Linux Network Engineer,
>> >> >> >> World2Web Soft Technologies Private Ltd,
>> >> >> >> 26, Koramangala Industrial Layout,
>> >> >> >> Bangalore - 560095,
>> >> >> >> INDIA
>> >> >> >> Phone :98860 24705
>> >> >> >> e-mail: atulk at world2web.com
>> >> >> >> -------------------------------------------------------
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>> >> >> >> _______________________________________________
>> >> >> >> Nagios-users mailing list
>> >> >> >> Nagios-users at lists.sourceforge.net
>> >> >> >> https://lists.sourceforge.net/lists/listinfo/nagios-users
>> >> >> >> ::: Please include Nagios version, plugin version (-v) and OS
>> > when
>> >> >> reporting any issue.
>> >> >> >> ::: Messages without supporting info will risk being sent to
>> >> > /dev/null
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > -------------------------------------------------------
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>> >> >> > _______________________________________________
>> >> >> > Nagios-users mailing list
>> >> >> > Nagios-users at lists.sourceforge.net
>> >> >> > https://lists.sourceforge.net/lists/listinfo/nagios-users
>> >> >> > ::: Please include Nagios version, plugin version (-v) and OS
>> > when
>> >> >> reporting any issue.
>> >> >> > ::: Messages without supporting info will risk being sent to
>> >> > /dev/null
>> >> >> >
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > -------------------------------------------------------
>> >> > This SF.net email is sponsored by: IT Product Guide on
>> > ITManagersJournal
>> >> > Use IT products in your business? Tell us what you think of them.
>> > Give
>> >> us
>> >> > Your Opinions, Get Free ThinkGeek Gift Certificates! Click to
> find
>> > out
>> >> > more
>> >> > http://productguide.itmanagersjournal.com/guidepromo.tmpl
>> >> > _______________________________________________
>> >> > Nagios-users mailing list
>> >> > Nagios-users at lists.sourceforge.net
>> >> > https://lists.sourceforge.net/lists/listinfo/nagios-users
>> >> > ::: Please include Nagios version, plugin version (-v) and OS
> when
>> >> > reporting any issue.
>> >> > ::: Messages without supporting info will risk being sent to
>> > /dev/null
>> >> >
>> >>
>> >
>> >
>> >
>> >
>> > -------------------------------------------------------
>> > This SF.net email is sponsored by: IT Product Guide on
> ITManagersJournal
>> > Use IT products in your business? Tell us what you think of them.
> Give
>> us
>> > Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find
> out
>> > more
>> > http://productguide.itmanagersjournal.com/guidepromo.tmpl
>> > _______________________________________________
>> > Nagios-users mailing list
>> > Nagios-users at lists.sourceforge.net
>> > https://lists.sourceforge.net/lists/listinfo/nagios-users
>> > ::: Please include Nagios version, plugin version (-v) and OS when
>> > reporting any issue.
>> > ::: Messages without supporting info will risk being sent to
> /dev/null
>> >
>>
>
>





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