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Multiple xymon clients behind same IP

4 messages in this thread

list Asif Iqbal · Wed, 29 Jul 2020 11:19:06 -0400 · 
I have multiple xymon clients (multiple devices at home) and the xymon
server is at cloud.

The outgoing IP is same for all the xymon clients. How do I monitor them?

-- 
Asif Iqbal
PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
list Damien Martins · Wed, 29 Jul 2020 21:55:41 +0200 · 

Le 29 juil. 2020 ? 17:19, ? 17:19, user-6f4b51ac2a40@xymon.invalid a ?crit:
▸ quoted from Asif Iqbal
I have multiple xymon clients (multiple devices at home) and the xymon
server is at cloud.

The outgoing IP is same for all the xymon clients. How do I monitor
them?

-- 
Asif Iqbal
PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
list Asif Iqbal · Thu, 30 Jul 2020 11:23:46 -0400 · 
Hi Damien,

That was it! Thank you!

Regards,
Asif


On Wed, Jul 29, 2020 at 3:55 PM Damien Martins <user-c12727b399f0@xymon.invalid>
wrote:

Le 29 juil. 2020, ? 17:19, user-6f4b51ac2a40@xymon.invalid a ?crit:
▸ quoted from Damien Martins

I have multiple xymon clients (multiple devices at home) and the xymon
server is at cloud.

The outgoing IP is same for all the xymon clients. How do I monitor them?

--
Asif Iqbal
PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?



Hello Asif,

I'm in this situation (NAT in my case). Just set the name in /etc/xymon/hosts.cfg and the same ip. If the clients are reporting the same name as in hosts.cfg file, you are done.

?Regards,
Damien Martins?
▸ quoted from Damien Martins


-- 
Asif Iqbal
PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
list Shawn Heisey · Sat, 1 Aug 2020 14:11:44 -0600 ·
▸ quoted from Asif Iqbal
On 7/29/2020 9:19 AM, user-6f4b51ac2a40@xymon.invalid wrote:
I have multiple xymon clients (multiple devices at home) and the xymon server is at cloud.

The outgoing IP is same for all the xymon clients. How do I monitor them?
Damien's suggestion is one way.  And I do not think it's a bad way.

What I will generally do for hosts that cannot be accessed externally is use 0.0.0.0 as the IP address in hosts.cfg.  I then add "noconn" and maybe "CLIENT:host.example.com" to the config line.  The noconn is because hosts behind NAT normally can't be pinged directly, and noconn ensures that xymon will not try to ping it and mark the host down when the ping fails.

If there are holes in the firewall to allow outside access, then a real IP address and server-side tests like "ssh" MIGHT be appropriate, but in most cases for firewalled hosts, those tests are not added.  The CLIENT section allows things to work if the xymon client reports something different as its hostname than what you have in hosts.cfg, which could happen in the wild.  I do sometimes have "http" tests on these host lines, because http tests are usually done with DNS lookups and don't try to use the 0.0.0.0 address.

Thanks,
Shawn