load balancing using keepalived

Joseph Mack NA3T jmack at wm7d.net
Tue May 22 13:26:37 BST 2007


On Mon, 21 May 2007, Gerry Reno wrote:

> I'm a new LVS user.  I posted a shorter version over on the keepalived-devel
> list but there doesn't seem to be much traffic over there

yes it's a problem

> I've got a basic two realserver configuration running.

you're showing a single realserver with the director running 
in local node. It is a two realserver configuration, but 
it's not the basic configuration.

> I setup the config to 
> balance port 22 SSH connections between the two realservers equally weighted. 
> The problem is that I'm not seeing any load balancing occurring.  All the SSH 
> connections are going to the first realserver.

below you show it all going to the 2nd realserver.

> I'm using 'rr' scheduling. 
> I've looked through the forum and google and I see other entries with similar 
> situation of no load balancing occurring.  Can this be fixed?  I was 
> expecting that the connections would alternate between the two realservers 
> when using the 'rr' scheduler.

I would have thought so too.

> Also, does it ever balance at any time or load level?

each connection. so consecutive connections should alternate 
realservers.

> I am not using any persistence (at least that I know of).

you aren't



> Here is ipvsadm:
> # ipvsadm
> IP Virtual Server version 1.2.1 (size=4096)
> Prot LocalAddress:Port Scheduler Flags
> -> RemoteAddress:Port Forward Weight ActiveConn InActConn
> TCP 192.168.1.215:ssh rr
> -> 192.168.1.26:ssh Masq 1 0 1
> -> 192.168.1.25:ssh Local 1 3 0
> #

Joe

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!

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