The more I read through the archives, the more confused I am on how to implement this. Basically, I want to monitor 64 compute nodes that are on a private network. I do not want to have to install the client on all of the nodes as all I care about is the ping test. I have a main hobbit server that I want to merge the info from the cluster and from various other systems that I monitor.
To work as a bridge, I installed hobbit on the head node of the cluster as it is the only system with an interface on both networks. On the head node I disabled all of the hobbitd modules and setup bbproxy to forward messages to my main hobbit server. This didn¹t work. After reading up on the bbproxy man page it looks like bbproxy is really meant to forward client messages on to a bbdisplay. Since I don¹t have the hobbit client installed on the compute nodes it doesn¹t sound like bbproxy will work for this. I am a bit confused on what actually does the network tests. Do I have to have hobbitd running on the head node in order for the network tests to run? If that is the case, how do I get hobbitd to forward information on to a different hobbit server?
I am pretty sure that I have simply failed to understand one of the man pages or something, but I cant seem to figure out how to accomplish what I am looking to do.
Hi.
If you wish to forward messages using multiple displays you should change a couple of things, revert the configuration files (hobbitlaunch.cfg) to make hobbit act as a display server then you should change hobbitserver.cfg as follows: BBDISP="0.0.0.0" BBDISPLAYS="$BBSERVERIP 12.34.56.78"
The BS ip should be changed to whatever the ip is for your main hobbit server.
This configuration *should* work. Just reply if it doesn't.
With regards, Sigurdur Gudbrandsson
On Tue, 2007-06-26 at 13:21 -0400, Ben Fenstermaker wrote:
The more I read through the archives, the more confused I am on how to implement this. Basically, I want to monitor 64 compute nodes that are on a private network. I do not want to have to install the client on all of the nodes as all I care about is the ping test. I have a main hobbit server that I want to merge the info from the cluster and from various other systems that I monitor.
To work as a bridge, I installed hobbit on the head node of the cluster as it is the only system with an interface on both networks. On the head node I disabled all of the hobbitd modules and setup bbproxy to forward messages to my main hobbit server. This didn’t work. After reading up on the bbproxy man page it looks like bbproxy is really meant to forward client messages on to a bbdisplay. Since I don’t have the hobbit client installed on the compute nodes it doesn’t sound like bbproxy will work for this. I am a bit confused on what actually does the network tests. Do I have to have hobbitd running on the head node in order for the network tests to run? If that is the case, how do I get hobbitd to forward information on to a different hobbit server?
I am pretty sure that I have simply failed to understand one of the man pages or something, but I cant seem to figure out how to accomplish what I am looking to do.
On 6/27/07 4:50 AM, "Sigur›ur Gu›brandsson" <sigurdur at raforninn.is> wrote:
Hi.
If you wish to forward messages using multiple displays you should change a couple of things, revert the configuration files (hobbitlaunch.cfg) to make hobbit act as a display server then you should change hobbitserver.cfg as follows: BBDISP="0.0.0.0" BBDISPLAYS="$BBSERVERIP 12.34.56.78"
The BS ip should be changed to whatever the ip is for your main hobbit server.
This almost works... On my secondary hobbit server I now have it displaying correctly again and there doesn't seem to be any errors on that side. On the main hobbit server I don't see the status for my 64 compute nodes, however they all show up in the ghost clients list. I figured this wasn't a problem as I can just add them to the bb-hosts file. If I do this they always change to red since my main hobbit server tries to query them and cant reach the protected network.
This configuration *should* work. Just reply if it doesn't.
With regards, Sigurdur Gudbrandsson
-- Ben Fenstermaker
On Wed, Jun 27, 2007 at 04:03:53PM -0400, Ben Fenstermaker wrote:
This almost works... On my secondary hobbit server I now have it displaying correctly again and there doesn't seem to be any errors on that side. On the main hobbit server I don't see the status for my 64 compute nodes, however they all show up in the ghost clients list. I figured this wasn't a problem as I can just add them to the bb-hosts file. If I do this they always change to red since my main hobbit server tries to query them and cant reach the protected network.
Define them with a "noconn" setting, or use the "NET:foo" tag to setup different sets of network tests.
Regards, Henrik
Ah, finally, something I can comment on competently.
The way we do it is we have two pollers and one display. The display does no network testing (we disabled it in hobbitlaunch.cfg) but that's not necessarily required. For your situation, you have to choices.
You use the Net:hostname moniker in your bb-hosts file, andthen you can keep the bb-hosts files synced however you wish (we just scp when we make a change). Any hosts you don't have the Net:hostname tag in will be tested by any servers.
Maintain two separate bb-hosts, with all hosts on the displayservers' copy, but then you have to manually put a noconn tag in the hosts to not ping in the bb-hosts file on the display, otherwise, your display server will be testing those as well, and that status will be over-riding the status from your other server.
Obviously, choice 1 is much easier to maintain, but you will have to put a Net:thing tag in every line of your current script (easy to do with a quick perl script or whatnot. I have one somewhere if you need such). I'd really recommend going that route.
Tod Hansmann
Network Engineer
<http://www.directpointe.com/>
From: Ben Fenstermaker [mailto:fensterb at ccri.net] Sent: Wednesday, June 27, 2007 2:04 PM To: hobbit at hswn.dk Subject: Re: [hobbit] Cluster monitoring (proxy setup)
On 6/27/07 4:50 AM, "Sigur>ur Gu>brandsson" <sigurdur at raforninn.is> wrote:
Hi.
If you wish to forward messages using multiple displays you should change a couple of things, revert the configuration files (hobbitlaunch.cfg) to make hobbit act as a display server then you should change hobbitserver.cfg as follows: BBDISP="0.0.0.0" BBDISPLAYS="$BBSERVERIP 12.34.56.78"
The BS ip should be changed to whatever the ip is for your main hobbit server.
This almost works... On my secondary hobbit server I now have it displaying correctly again and there doesn't seem to be any errors on that side. On the main hobbit server I don't see the status for my 64 compute nodes, however they all show up in the ghost clients list. I figured this wasn't a problem as I can just add them to the bb-hosts file. If I do this they always change to red since my main hobbit server tries to query them and cant reach the protected network.
This configuration *should* work. Just reply if it doesn't.
With regards, Sigurdur Gudbrandsson
-- Ben Fenstermaker
participants (4)
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fensterb＠ccri.net
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henrik＠hswn.dk
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sigurdur＠raforninn.is
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thansmann＠directpointe.com