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 <[email protected]> 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 > > > _______________________________________________ > Please read the documentation before posting - it's available at: > http://www.linuxvirtualserver.org/ > > LinuxVirtualServer.org mailing list - [email protected] > Send requests to [email protected] > or go to http://lists.graemef.net/mailman/listinfo/lvs-users -- Att, --==========================-- Raul da Silva Leite [email protected] 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/ LinuxVirtualServer.org mailing list - [email protected] Send requests to [email protected] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
