multiple xymon server IP 🔗 link

On Tue, 3 Jul 2012, Joseph Acquisto wrote:

Date: Tue, 3 Jul 2012 15:29:45 +0000
From: Joseph Acquisto <user-8f41a3273532@xymon.invalid>
To: xymon at xymon.com Subject: [Xymon] multiple xymon server IP

Built a new xymon server to replace an older box.   We have a DMZ.  To avoid 
doing the paperwork to create new firewall rules I was hoping there was a way
to "multi home" the new box so that, once the current one is retired, it can 
assume that IP be happy, from a xymon perspective.

Simply changing the new server to a single (old box) IP is not feasible for 
reasons I cannot get into.

Thanks for any pointers.

On 7/3/2012 at 10:13 PM, Isaac W Traxler <user-4dfb0dbf036e@xymon.invalid> wrote:

Hi,

If the two addresses are in the same network, it should be trivial. Just create an ip-alias and go for it. Xymon will not care what interface the packets come in over. It will get annoyed if you have clients transmit every conditon to it twice (I have had that problem every now and then).

I curently have a dual homed server. One interface is connected to a subnet inside of campus and the other interface goes directly outside of campus to a state network. My default route is across the external interface with routes defined for all campus address spaces to go over the campus interface.

All of this works a lot better than expected. A few clients attempt to send reports to both interfaces and for the ones that firewalls do not block, I get double entries -- annoying. Someday I will get all the clients configured properly.

Hopefully this info will help.

--
Isaac Traxler                             AIX,Linux Admin
Louisiana State University                user-4dfb0dbf036e@xymon.invalid High Performance Computing                XXX-XXX-XXXX
LONI AIX Clusters
AIX, Linux Support

On Tue, 3 Jul 2012, Joseph Acquisto wrote:

Date: Tue, 3 Jul 2012 15:29:45 +0000
From: Joseph Acquisto <user-8f41a3273532@xymon.invalid>
To: xymon at xymon.com Subject: [Xymon] multiple xymon server IP

Built a new xymon server to replace an older box.   We have a DMZ.  To avoid 
doing the paperwork to create new firewall rules I was hoping there was a way
to "multi home" the new box so that, once the current one is retired, it can 
assume that IP be happy, from a xymon perspective.

Simply changing the new server to a single (old box) IP is not feasible for 
reasons I cannot get into.

Thanks for any pointers.

On Thu, Jul 5, 2012 at 11:20 PM, Joseph Acquisto <user-8f41a3273532@xymon.invalid>wrote:

Oh, another thought.

I would like the new xymon box to send out tests/ requests on the alias IP.
(firewall issue again).

If I change the host IP to the alias in the various xymon config files
(once the
old box is retired), and restart xymon, am I correct in assuming it would
use
the alias for outgoing xymon related stuff?

joe a.

"Joseph Acquisto" <user-8f41a3273532@xymon.invalid> 07/04/12 6:48 AM >>>

This is what I had hoped to hear.

Thanks much.

joe a

On 7/3/2012 at 10:13 PM, Isaac W Traxler <user-4dfb0dbf036e@xymon.invalid> wrote:

Hi,

If the two addresses are in the same network, it should be trivial. Just
create an ip-alias and go for it. Xymon will not care what interface the
packets come in over. It will get annoyed if you have clients transmit
every conditon to it twice (I have had that problem every now and then).

I curently have a dual homed server. One interface is connected to a
subnet inside of campus and the other interface goes directly outside of
campus to a state network. My default route is across the external
interface with routes defined for all campus address spaces to go over
the
campus interface.

All of this works a lot better than expected. A few clients attempt to
send reports to both interfaces and for the ones that firewalls do not
block, I get double entries -- annoying. Someday I will get all the
clients configured properly.

Hopefully this info will help.

--
Isaac Traxler                             AIX,Linux Admin
Louisiana State University                user-4dfb0dbf036e@xymon.invalid
High Performance Computing                XXX-XXX-XXXX
LONI AIX Clusters
AIX, Linux Support

On Tue, 3 Jul 2012, Joseph Acquisto wrote:

Date: Tue, 3 Jul 2012 15:29:45 +0000
From: Joseph Acquisto <user-8f41a3273532@xymon.invalid>
To: xymon at xymon.com
Subject: [Xymon] multiple xymon server IP

Built a new xymon server to replace an older box.   We have a DMZ.  To
avoid
doing the paperwork to create new firewall rules I was hoping there was
a way
to "multi home" the new box so that, once the current one is retired,
it can
assume that IP be happy, from a xymon perspective.

Simply changing the new server to a single (old box) IP is not feasible
for
reasons I cannot get into.

Thanks for any pointers.

Joseph, you can override the default source IP address for xymonnet by
adding "--source-ip=ip.add.re.ss".  You would make this change in tasks.cfg.

Any tests that aren't handled by xymonnet (eg custom scripts such as
devmon) would have to do the equivalent.

J

On Thu, Jul 5, 2012 at 11:20 PM, Joseph Acquisto <user-8f41a3273532@xymon.invalid>wrote:

Oh, another thought.

I would like the new xymon box to send out tests/ requests on the alias IP.
(firewall issue again).

If I change the host IP to the alias in the various xymon config files
(once the
old box is retired), and restart xymon, am I correct in assuming it would
use
the alias for outgoing xymon related stuff?

joe a.

"Joseph Acquisto" <user-8f41a3273532@xymon.invalid> 07/04/12 6:48 AM >>>

This is what I had hoped to hear.

Thanks much.

joe a

On 7/3/2012 at 10:13 PM, Isaac W Traxler <user-4dfb0dbf036e@xymon.invalid> wrote:

Hi,

If the two addresses are in the same network, it should be trivial. Just
create an ip-alias and go for it. Xymon will not care what interface the
packets come in over. It will get annoyed if you have clients transmit
every conditon to it twice (I have had that problem every now and then).

I curently have a dual homed server. One interface is connected to a
subnet inside of campus and the other interface goes directly outside of
campus to a state network. My default route is across the external
interface with routes defined for all campus address spaces to go over
the
campus interface.

All of this works a lot better than expected. A few clients attempt to
send reports to both interfaces and for the ones that firewalls do not
block, I get double entries -- annoying. Someday I will get all the
clients configured properly.

Hopefully this info will help.

--
Isaac Traxler                             AIX,Linux Admin
Louisiana State University                user-4dfb0dbf036e@xymon.invalid
High Performance Computing                XXX-XXX-XXXX
LONI AIX Clusters
AIX, Linux Support

On Tue, 3 Jul 2012, Joseph Acquisto wrote:

Date: Tue, 3 Jul 2012 15:29:45 +0000
From: Joseph Acquisto <user-8f41a3273532@xymon.invalid>
To: xymon at xymon.com
Subject: [Xymon] multiple xymon server IP

Built a new xymon server to replace an older box.   We have a DMZ.  To
avoid
doing the paperwork to create new firewall rules I was hoping there was
a way
to "multi home" the new box so that, once the current one is retired,
it can
assume that IP be happy, from a xymon perspective.

Simply changing the new server to a single (old box) IP is not feasible
for
reasons I cannot get into.

Thanks for any pointers.

On Sat, Jul 7, 2012 at 1:34 AM, Joseph Acquisto <user-8f41a3273532@xymon.invalid>wrote:

Thanks.  I guess that goes in the [xymonnet] section as part of the CMD
line ?