controlling tty

[Nate Johnson]

Maybe I wasn't clear enough about this in asking my question, but when 
ssh'ing to each host *from the command line* and not *from the cgi 
frontend* the checks succeed.  It is when nagios is doing the regularly 
scheduled checks through the check_by_ssh plugin that the warning 
message is returned to the cgi frontend.  The checks would have failed 
when executing them manually from the command line if the hostkey of 
the remote machine wasn't already stored in ~/.ssh/known_hosts.

The only reference to this that I was able to find on the web was in 
the netsaint list archives on geocrawler.  Someone asked the same 
question that I did.  Unfortunately, the only answer posted to the list 
was someone who noted that there was a bug in redhat's /bin/login (from 
an earlier version of redhat than than the one I'm using).  They had 
suggested update the linux-util rpm.  Anyway, I don't think that's the 
issue here, and reading this e-mail list, it is obvious that others are 
successfully using the check_by_ssh plugin.

thanks for the help so far,
Nate

On Friday, Dec 20, 2002, at 20:20 America/Indianapolis, Mike McClure 
wrote:

> I think the problem is that you don't have a host key for each of the 
> remote hosts
> on your monitoring host, available to the user under which you run the 
> plugin.
>
> You'll need to get them, either manually by editing the "known_hosts" 
> file, or by
> ssh'ing as the nagios user to each host and accepting the host key.
>
> Take a look at 
> http://www.snailbook.com/faq/trusted-host-howto.auto.html for more
> details.
>
>> Please see below for answers to each of your questions.  Thanks so 
>> much
>> for your time so far.
>>
>> ~nate
>>
>> On Fri, 20 Dec 2002 16:43:10 -0600 (CST) "Mike McClure" 
>> <mmcclure at pneservices.com>
>> wrote:
>>
>>> What operating systems are you using?
>>
>> Redhat 7.3 on the nagios monitorring host
>> several other OS's on hosts being monitorred (but the situation is 
>> the same on all)
>>
>>> What version of the plugins are you using?
>>
>> 1.3-beta1
>>
>>> Are you using the commercial version of SSH, or OpenSSH?
>>
>> ssh.com's ssh (although it is the non-commercial version).  For the
>> purposes of your question, I am using the commercial ssh.
>>
>>> SSHv2 or SSHv1?
>>
>> sshv2
>>
>>> How are you performing authentication?  .shosts?  RSA/DSA keys?
>>
>> I am using a keypair with a null passphrase.
>>
>>>> When doing remote checks through check_by_ssh, they work from the 
>>>> command
>>>> line, but from the cgi interface, they return a warning status with 
>>>> the
>>>> message:
>>>>
>>>>   warning: You have no controlling tty. Cannot read confirmation.
>>>>
>>>> Anyone know what I might be doing wrong?  Any advice would be great.
>>>>
>>>> Thanks,
>>>> Nate
>>>>
>>>>
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>>>>
>>>
>>>
>>> --
>>> Mike McClure, CCIE # 5125, CISSP # 30232
>>> PNE Services, Inc. -  http://www.pneservices.com
>>> mmcclure at pneservices.com
>>> mobile: 913-636-5590
>>>
>>>
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>>
>>
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>
>
> -- 
> Mike McClure, CCIE # 5125, CISSP # 30232
> PNE Services, Inc. -  http://www.pneservices.com
> mmcclure at pneservices.com
> mobile: 913-636-5590
>
>
>
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> https://lists.sourceforge.net/lists/listinfo/nagios-users
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>



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