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A/C>
I made this tests before, but don't have a effect, but tks for your opinion.
Tks,
On Tue, Oct 27, 2009 at 5:51 PM, L.S. Keijser <leon@xxxxxxxx> wrote:
> On Tue, 2009-10-27 at 13:24 -0200, Raul da Silva {Sp4wn} wrote:
> > I heard the following about flow of "master/bakcup" sync (piranha + dr ):
> >
> > Once a connection is established, the master sync daemon (on the active
> > director) sends data to the backup sync daemon (on the backup director).
> > The backup director is then aware of an established connection. If the
> > primary director fails, the backup will take over and still forward
> packets
> > from an established connection to the right reral server.
> >
> > This works fine on long lasting connections (interactive sessions like
> FTP,
> > telnet, SSH and so on) but doesn't on short connections (http without
> > keepalive for example).
> >
> > Is it true ? if is true I think the better way to solve this is implement
> > some solution like conntrack-tools (netfilter).
>
> I can't test it, because my version of ipvsadm (ipvsadm v1.24 2005/12/10
> (compiled with getopt_long and IPVS v1.2.1)) the sync daemons don't work
> at all :( But AFAIK it should work on all connection types.
>
> But you could try to alter the values
> in /proc/sys/net/ipv4/vs/sync_threshold. By default it's set to '3 50'
> meaning after 3 packets the connection gets synchronized and each next
> 50 packets will cause the connection to sync. Try lowering these values
> and experiment if this helps you.
>
> You could also see:
>
>
> http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.server_state_sync_demon.html
>
> which has a piece on piranha and sync daemons.
>
> --
> Léon
>
>
> _______________________________________________
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> http://www.linuxvirtualserver.org/
>
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--
Att,
--==========================--
Raul da Silva Leite
sp4wn.root@xxxxxxxxx
Linux Consultant / Red hat Brasil
RHCE / LPI-II / ITIL / RHCI / RHCA / RHCSS / RHCDS
+55 11 8504-3200
--==========================--
_______________________________________________
Please read the documentation before posting - it's available at:
http://www.linuxvirtualserver.org/
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