[Xymon] [XYMON] agents with pulldata - xymonfetch and ssh tunelling

Pierre L pierre.lapha at gmail.com
Thu Nov 2 08:38:42 CET 2017


Hello Thomas,

thanks for the reply.
I have tried xymon 127.0.0.1 “ping” but it does nothing on the client
(tunnel opened or not).
When I do 'xymon serverIP “ping”'  I get the version of the server.
For the tunnel, I have done, on the server: 'ssh -L 1234:127.0.0.1:1984
serverIP'

Regarding the proxy, we had this kind of solution but security (again)
asked for them to be removed.

I have seen your ssh tunnel script and article but I must admit that my
technical level made it a little bit difficult to understand. I ll get a
closer look today.

Pierre

Le mar. 31 oct. 2017 à 18:05, Thomas Eckert <thomas.eckert at it-eckert.de> a
écrit :

> Pierre,
>
> does a `xymon 127.0.0.1 “ping”` on the client return the version-number of
> your xymon server? If it does your client should simply report to 127.0.0.1
> and you should be ready to go.
>
> `pulldata` is for situations where the _server_ can reach the client (on
> port 1984) — “normal” communication is the other way around: the client
> contacts the server on tcp/1984. The “daemon" for `pulldata` from the
> server on the client is `msgcache`: That has to be enabled in `
> clientlaunch.cg`. If the security-policy applies to the client as well.
> This does not seem to be the case in your setup.
>
> If you are not already using it: have a look at the excellent
> `ssh-tunnel`-extension <
> https://wiki.xymonton.org/doku.php/addons:ssh_tunnel> for automatic
> establishing (and monitoring) the ssh-tunnel.
> I have an article on ssh-tunnel <
> http://www.it-eckert.com/blog/2014/remote-site-monitoring-with-ssh-tunnel/>
> and also provide an improved/patched version <
> http://www.it-eckert.com/software/patches/ssh-tunnel/>.
>
> If you have more than one client that has to be monitored in a remote
> location have a look at `xymonproxy` too, more details here <
> http://www.it-eckert.com/blog/2014/combine-ssh-tunnel-with-xymonproxy/>.
>
> Cheers
> Thomas
>
> On 31 Oct 2017, at 17:37, Pierre L <pierre.lapha at gmail.com> wrote:
>
> Hello,
>
> I am trying to set up xymonfetch/msgcache with ssh tunnelling (because
> security does not want to open flows on port 1984).
>
> I have enabled xymonfetch (in tasks.cfg) and added pulldata (in hosts.cfg)
> on server side and also msgcache (in clientlaunch.cfg) and
> XYMSRV=127.0.0.1 (in xymonclient.cfg).
>
> I have done a ssh tunnel (ssh -L 1234:127.0.0.1:1984 IP_of_the_client)
> from the xymon server. My tunnel is ok but xymon logs still show that
> nothing happens, no pulldata.
>
> Is there something else I should do to enable this function?
>
> Any help would be appreciated. Thank you!
>
> Pierre
>
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