[lvs-users] How to Tell If an RS Is Really Up

[Joseph Mack NA3T]

On Thu, 4 Dec 2008, Robinson, Eric wrote:

> Are we sure this behavior isn't by design? If not, I hope it never
> changes.

Thanks for the details in your earlier posting. I didn't 
understand the problem and I wasn't aware of this behaviour 
either. Glad Graeme had something to say. I wonder if 
ldirectord watches the tables that ipvsadm writes to and 
takes that info as the state the realserver is supposed to 
be in. Mon has a similar capability (it's been a while since 
I looked at it, so I'm foggy on the details). You tell mon 
the the ipvsadm command/state/weight etc you want for the 
realserver's service when the realserver's service is up and 
mon issues ipvsadm commands appropriate for whether the 
realserver's service is up or down. So when you're using mon 
you control the lvs via mon and then mon issues the ipvsadm 
commands. It looks like ldirectord is functionally similar.

Joe

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Joseph Mack NA3T EME(B,D), FM05lw North Carolina
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