Re: [Nagios-users] troubles with check_by_ssh

[<rob...@uk...>]

nag...@li... wrote on 25/10/2006 23:30:19:

[snip]

> Here is the /var/log/messages on host18...
> 
> Oct 25 15:10:10 host18 sshd2[870]: connection from "10.1.1.1"
> Oct 25 15:10:10 host18 sshd2[13080]: DNS lookup failed for "10.1.1.1". 
> Oct 25 15:10:10 host18 sshd2[13080]: Remote host disconnected: Key 
> exchange failed.
> Oct 25 15:10:10 host18 sshd2[13080]: Key exchange failed in remote: 
> 'Key exchange failed.'

The log file is telling exactly what the problem is.. The ssh key exchange 
failed..

Fix the key exchange.. There's a problem with the private/public keys.. 
Maybe they don't exist on the remote server, or aren't set up right, or 
don't have the right permissions.  With the commercial SSH package I'm 
using, it uses keys in the ~/.ssh2 folder.. It's not the same as OpenSSH, 
and the keys are in a different format.

You should look up the documentation for SSH2 for your operating system 
and set up keynegotiation for the user that is connecting to host host18. 
You need key exchange to work before you can use the check_by_ssh plugin. 
There is good documentation for Commercial SSH, that's why you pay for it.

rob


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