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> > 1) Why when I startup the pulse at backup node, it straight away
become
> > active and the primary node become inactive??
> I don't know this one. When you say backup node, are you talking
about
> a the realservers or the LVS directors? (ie is gretel and gretelf
different
> from gretel3 and gretel4).
Yes, the gretel is the director and the gretelf is the backup node. The
gretel3 and gretel4 is the real servers.
> > 2) After that, I cannot access the VIP address via a client. But,
when I
> > use "ps axw" on both primary and backup nodes, there is only pulse
> > running on primary node. Here is the
> > backup"ps axw":
> > =================
> > 15421 ? S 0:00 pulse
> > 15505 ? S 0:00 /usr/sbin/fos --active -c /etc/lvs.cf
> > --nofork
> > 15531 ? S 0:00 httpd
> > 15534 ? S 0:00 httpd
> > 15535 ? S 0:00 httpd
> > 15536 ? S 0:00 httpd
> > 15537 ? S 0:00 httpd
> > 15538 ? S 0:00 httpd
> > 15539 ? S 0:00 httpd
> > 15540 ? S 0:00 httpd
> > 15541 ? S 0:00 httpd
> >
> > 3) Furthermore, it seems that the httpd on primary node is stopped.
Why
> > is this happen?
>
> Don't know. I am not sure which of these is which - are we talking
> directors or web servers.
>
> When you set up two nodes in a fos, then those two nodes run the
services
> and coordinate between each other. In other words, run piranha on the
nodes
> you want to run the service on in this case.
>
> If you set up an LVS load balancer, then you run piranha on the
directors,
> which you can set up one as primary and one as backup. THIS IS NOT
fos
> in this case, but one director should fail over to the other. The
only
> web server on the nodes running piranha should probably be the one
that
> serves up the piranha gui, and I would use TCP wrappers to secure that
> (ie launch httpd from inetd). The realservers in this case would just
> be web servers, nothing special needed (in LVS/NAT, anyway - the arp
> problem needs to be dealt with in LVS/DR).
>
> > 4) I also try to unplug the primary node from the Internet, the
backup
> > node is failover. But, when I plugged the primary node back to the
> > Internet, the primary node doesn't seem to failover. The primary
node
> > still is inactive wheareas the backup node is active. Pls advice.
>
> I don't know about this - I think your setup is confused, and it
confuses
> me.
U mentioned that set the configuration to lvs and not fos. Then, if the
primary node, gretel fail, the backup node, gretelf will take over?
confuse...
Don't worry, Be happy! :)
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