Re: [Zabbix-users] net.tcp.service[]: default IP address?!

[Shawn B. <sb...@cs...>]

See comments in line.


On Thu, 2006-05-25 at 16:52 +0200, Wolfram Schlich wrote:
> Hi Shawn,
> 
> thanks for your answer.
> I hope you don't mind me sending it to the list :-)
> 
> * Badger, Shawn <SB...@cs...> [2006-05-25 16:23]:
> > * Wolfram Schlich <li...@wo...> [2006-05-25 15:23]:
> > > What IP address does the net.tcp.service[] check look at
> > > by default when checking a service?
> > > 127.0.0.1? 0.0.0.0?
> >
> > THe ip address of which ever host the item is placed under.
> 
> That's not distinctive enough for me.
> Let me outline my setup:
> 
> Zabbix Server
> =============
> 
> 	Running on machine A
> 	--------------------
> 
> 	IP addresses:
> 		127.0.0.1 -- localhost
> 		192.168.0.50 -- machineA.example.com
> 		192.168.0.51 -- www.example.com
> 		$92.168.0.52 -- ftp.example.com
> 
> 	zabbix_server.conf:
> 		ListenPort=10051
> 	
> 	-> Listening on 0.0.0.0:10051 (is there a way to change this btw.?=

You can change this to what ever you want. You change the
zabbix_server.conf to whichever port you want that is open and then
change the zabbix_agentd.conf the same on ServerPort value.

> 
> Zabbix Agents
> =============
> 
> 	Running on machine B
> 	--------------------
> 
> 	IP addresses:
> 		127.0.0.1 -- localhost
> 		192.168.0.100 -- machineB.example.com
> 		192.168.0.101 -- mail.example.com
> 		$92.168.0.102 -- news.example.com
> 
> 	zabbix_agentd.conf:
> 		ListenIP=192.168.0.100
> 		ListenPort=10050
> 		Server=192.168.0.50
> 		ServerPort=10051
> 		Hostname=machineB
> 
> 	-> Listening on 192.168.0.100:10050
> 
> 	Running on machine A (the server itself)
> 	----------------------------------------
> 
> 	IP addresses:
> 		127.0.0.1
> 		[...]
> 
> 	zabbix_agentd.conf:
> 		ListenIP=127.0.0.1
> 		ListenPort=10050
> 		Server=127.0.0.1
> 		ServerPort=10051
> 		Hostname=machineA
> 
> 	-> Listening on 127.0.0.1:10050
> 
> Zabbix Frontend
> ===============
> 
> Host "machineB" is configured as "machineB.example.com",
> "Use IP address" is not enabled.
> The FQDN "machineB.example.com" resolves to "192.168.0.100".
> Host "machineB" has an item "net.tcp.service[smtp]".
> Against what IP address does the Zabbix Agent run
> the SMTP service check? The one that "machineB.example.com"
> resolves to?

The net.tcp.service[sntp] will poll port 25 on machineB which looks to
be 192.168.0.100.

> 
> Host "machineA" is configured as "machineA.example.com",
> "Use IP address" is enabled, "IP address" is set to "127.0.0.1".
> The FQDN "machineA.example.com" resolves to "192.168.0.50"
> Host "machineA" has an item "net.tcp.service[http]".
> Same question here: is the HTTP check run against "127.0.0.1", because
> that's the IP address supplied for using "Use IP address",
> or does it also use the IP address that the FQDN
> "machineA.example.com" resolves to?

It will use the 127.0.0.1 address in this instance because you overrode
the DNS lookup for than hostname by typing in the IP address.

> 
> Thanks in advance.
> Best regards

I hope this helps you out.