can't get host to display in Host Detail panel

[Jonathan Wiggins]

Hi Stuart

That line does exist, along with others, in the nrpe.cfg file

I run these, for example, and both give the same output:

 /usr/lib64/nagios/plugins/check_nrpe -H localhost -c check_users
NRPE: Unable to read output

/usr/lib64/nagios/plugins/check_nrpe -H localhost -c check_load
NRPE: Unable to read output

do I actually need to supply arguments at the end of the check_nrpe command? e.g., -w 5,4,3   (i've tried doing so, but to no avail)
On Sep 21, 2010, at 3:57 PM, Stuart Browne wrote:

> what’s the command line that is called from nrpe when it’s asked for a ‘check_load’ ?  There should be a line similar to this in there:
>  
> command[check_load]=/usr/lib64/nagios/plugins/check_load -w 5,4,3 -c 8,6,4
>  
> Does this exist in the nrpe.cfg?  If you run the command from your configuration as the nrpe_user, does it execute and return a value properly?
>  
> From: Jonathan Wiggins [mailto:jwiggins at salon.com] 
> Sent: Wednesday, 22 September 2010 06:36
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] can't get host to display in Host Detail panel
>  
> I have 3 web servers, and although they at one time all showed up successfully, now one of them does not.
>  
> i have verified on the web server in question that nrpe is running and listening on tcp/5666:
>  
> netstat -ntlp | grep nrpe
> tcp        0      0 0.0.0.0:5666                0.0.0.0:*                   LISTEN      13920/nrpe
>  
> /etc/init.d/nrpe status
> nrpe (pid 13920) is running...
>  
> I've checked the nrpe.cfg on another server that is showing up, and compared b/t the two, and they look identical.
>  
> i've got an IPTables rule that allows connections on the web server:
>  
> -A RH-Firewall-1-INPUT -p tcp -m tcp --dport 5666 -j ACCEPT
>  
> One of the things that doesn't test right though is the check_nrpe command:
>  
>  /usr/lib64/nagios/plugins/check_nrpe -H localhost -c check_load
> NRPE: Unable to read output
>  
> but tail /var/log/messages gives me something interesting, perhaps?
>  
> Sep 21 13:30:08 mywebserver kernel: Removing netfilter NETLINK layer.
> Sep 21 13:30:09 mywebserver kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
> Sep 21 13:30:10 mywebserver kernel: Netfilter messages via NETLINK v0.30.
> Sep 21 13:30:10 mywebserver  kernel: ip_conntrack version 2.4 (8192 buckets, 65536 max) - 304 bytes per conntrack
>  
> On the nagios server, i've checked the mywebserver.cfg file and it looks legit and cross-compared with the two others, it seems identical (except for IP of course):
>  
> # Host definition
> # Modified 81610
>  
> define host{
>           use linux-server ; Inherit default values from a template
>         host_name mywebserver ; The name we're giving to this server
>         alias mywebserver ; A longer name for the server
>         address 10.0.100.139 ; IP address of the server
> }
>  
> define service{
>         use generic-service
>         host_name                       mywebserver
>         service_description             Home Page
>         check_command                   check_http!ww2
> }
>  
>  
>  
> Any feedback, suggestions, thoughts, etc.. is much appreciated in advance
>  
> JW
> ------------------------------------------------------------------------------
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> and start using them to simplify application deployment and
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> http://p.sf.net/sfu/novell-sfdev2dev_______________________________________________
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