[Xymon] How Xymon invokes an SSH connection to the Client?

[Adam Goryachev]

On 14/03/16 11:39, Agege wrote:
> Thank you Adams,
>
> In this scenario, I am investigating Xymon server-and-several-clients 
> installation someone already already made.
>
> How do I determine if the Xymon server is getting data from clients 
> via Xymon protocol or via SSH protocol.
tcpdump running on either server or one of the clients should confirm 
this...
> And is Xymon protocol equals to port 1984?
>
By default, but that can be changed in the configuration files.

I'd suggest to review the config files on the server, starting with the 
files modified most recently (as these will be the ones customised for 
your installation). Check what port number the server is listening on 
(netstat -an | grep LISTEN) and then use tcpdump to monitor that port 
number, you will see the traffic/data reported from the clients. If you 
see status on the web pages which you don't see sent over this port, 
then you should check the config files further to see what else has been 
changed/other data collection configs.

PS, please don't top post :(

Regards,
Adam
> Thank you in advance.
>
>
> Thanks,
> Toyin Orokotan
> Linux System Admin.
> 682-831-9397
>
> On Mar 13, 2016, at 6:16 PM, Adam Goryachev 
> <mailinglists at websitemanagers.com.au 
> <mailto:mailinglists at websitemanagers.com.au>> wrote:
>
>> On 14/03/16 07:54, Agege Information Systems, Inc. wrote:
>>> Greetings,
>>>
>>> Please what kind of code or internal scripts Xymon runs to invoke an 
>>> SSH connection to the client and what runs the Xymon client scripts.
>>>
>>> In order words, please could you enlighten me with the actual 
>>> commands or codes or scripts that Xymon uses for the SSH connection 
>>> and any Xymon codes running on each Client.
>>
>> In the standard installation method, the server doesn't use ssh to 
>> connect to the client and collect information. The only connections 
>> the server initiates are the "network" tests, eg, ping, smtp, http, 
>> etc... The client runs it's own client installation package, which 
>> will collect all the local information (disk space, processes 
>> running, network ports, etc) and then send those to the server using 
>> the Xymon protocol (extended from the original Big Brother protocol, 
>> but still backwards compatible).
>>
>> There are numerous options available for altering that method, 
>> including having the server use ssh to connect to the client and 
>> collect the data at regular intervals.
>>
>> Also, all source code is available, so feel free to peruse that for 
>> the ultimate finer details.
>>
>> Regards,
>> Adam
>>
>> -- 
>> Adam Goryachev Website Managers www.websitemanagers.com.au
>> _______________________________________________
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>> Xymon at xymon.com <mailto:Xymon at xymon.com>
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-- 
Adam Goryachev Website Managers www.websitemanagers.com.au
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