Replacing ldirectord/heartbeat with LVS/piranha/pulse

[Sean Drill]

I am not sure if I am misreading this, but it appears that the FOS can
only occur at the server level, and not at the node level
 
What I am trying to configure is....
 
 
Active LVS Server            Backup LVS
|
|
|-- VIP (HTTP)
        |
        |- Active HTTP
        |
        |- Backup HTTP
 
In doing so I will have two layers of redundancy. The first layer will
be if the LVS server hosting the VIP's fails, it will fail over to the
backup LVS server. This functionality is default for LVS. However I also
require redundancy at the node level. So if the active HTTP server
fails, it moves to the backup HTTP server, without initiating a failover
to the Backup LVS server.
 
>From what I am reading (I could be misreading) FOS occurs at the server
level, and not at the node level. Basically I want all HTTP traffic to
be handled by the Active HTTP server, and have the backup only take over
if I choose to fail it over, or the active server fails on its own.
 
Cheers
 
- Sean

________________________________

From: piranha-list-bounces at redhat.com
[mailto:piranha-list-bounces at redhat.com] On Behalf Of Edward Croft
Sent: Tuesday, 10 March 2009 3:17 AM
To: Piranha clustering/HA technology
Subject: Re: Replacing ldirectord/heartbeat with LVS/piranha/pulse


If you need to use scripting with FOS then you may need the patched
version that Sebastion Bonnet put out. 



2009/3/9 Mike Kemelmakher <mike at ubxess.com>


	Hi Sean,  

	You can try to configure FOS  ( fail-over service)  mode which
is supported by piranha as well. 

	Regards, 
	-Mike 
	

	2009/3/9 Sean Drill <sean.drill at staff.westnet.com.au>
	

		

		Hi there

		I have been having some issues implementing a new load
balancing system, and was hoping someone could over some advice.

		Our current configuration is configured using
ldirectord. The active node hosts all the virtual servers. Each virtual
server will have an active real server, and a backup real server. All
the traffic will be directed to the active real server, unless that
server becomes unreachable, at which point all traffic will be directed
to the backup server. In other words, a traditional real/fallback
system.

		I am however only able to get piranha/lvs to do load
sharing. In this case as long as both servers are set to UP, then
traffic will be balanced between all servers (determined by load
balancing scheme and weighting.) What I am attempting to do is create a
virtual server in LVS, which has two active REAL servers, however direct
traffic only to one of them, unless otherwise directed or if the active
member fail, then direct traffic to the backup. I am basically trying to
replicate the ldirectord/heartbeat system with piranha/lvs/pulse.

		Any directions which can be offered would be great
appreciated.

		Regards,
		Sean
		
		 
		Regards,
		Sean
		____________________________________
		
		Sean Drill
		Network Administrator - Network Services
		  <http://www.westnet.com.au/> 
		Westnet - Voted Number 1 ISP in Customer Satisfaction
six years running
		
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