AW: [Linux-HA] my installation of ClusterIP

[Martin Rosenmüller]

Hello Ilo,

the version of clusterip coming with centos5 has a bug in reference
counting. You have to use a newer kernel version or you apply the patch by
hand. 
You can reproduce the bug by adding a rule and then delete the rule - the
kernel will crash.
See: http://lists.opensuse.org/opensuse-bugs/2007-04/msg01420.html

This problem is known by the kernel developer and fixed with kernel 2.6.21
and later.
For your problem you can use the patch and self compile this module!

Martin



-----Ursprüngliche Nachricht-----
Von: linux-ha-bounces at lists.linux-ha.org
[mailto:linux-ha-bounces at lists.linux-ha.org] Im Auftrag von Ilo Lorusso
Gesendet: Donnerstag, 11. Oktober 2007 13:42
An: General Linux-HA mailing list
Betreff: Re: [Linux-HA] my installation of ClusterIP

Thanks for your responce

if I dont put it in how do I get IPaddr2 to put it in when heartbeat
initializes? as its not doing so at the moment. I see do have this script by
default /ha.d/resource.d/IPaddr2

Oh and Just to let u know I have got this working on CentOS 5, I see you
were asking, in the guide
but I had to recomplile the iptables userland rpm and include CLUSTERIP in
the extentions directory makefile


On 10/11/07, Michael Schwartzkopff <misch at multinet.de> wrote:
>
> Am Donnerstag, 11. Oktober 2007 12:31 schrieb Ilo Lorusso:
> > Hi ,
> >
> >
> > ive been following the http://www.linux-ha.org/ClusterIP
> >
> > and want to install a two node cluster as shown in the guide ..
> >
> > ive manged to get it up and going but have a few kinks to iron out..
> >
> > I ip alias both servers as directed and add the following command in on
> > both servers ,
> >
> > iptables -I INPUT -d 172.20.128.112  -i eth0 -p icmp -j CLUSTERIP \
> >   --new --clustermac 01:02:03:04:05:06 --total-nodes 2 \
> >   --local-node 1 --hashmode sourceip
>
> This is only a test if the CLUSTERIP target is compiled into your kernel.
> Normally this command is executed in the IPaddr2 agent of heartbeat. No
> need
> to run it manually.
>
>
> > start heartbeat configured as closey matched to the documentions..
> > I can ping my virtual and get a responce and see I
> >  I can see that I recieve responces from both servers so it looks like
> > active/active loadsharing is working..
> >
> > now, if I pull a network cable out and put it back, I notice
> >
> > that Heatbeat adds this iptables command to both servers
> >
> > iptables -A INPUT -d 172.69.128.112 -i eth0 -j CLUSTERIP --new
> --hashmode
> > sourceip-sourceport --clustermac b1:07:84:ab:56:34 --total-nodes 2
> > --local-node 2 --hash-init 0
> >
> > and randomly either one or both nodes crash with a kernel panics.. and
> > mentions ipt_CLUSTERIP
> > any answers around this? on why it kernel panics?
>
> The CLUSTERIP target of iptables is still marked experimental. So
> especially
> using that command several times on one node without deleting the rule on
> the
> node between two commands is not very welcomed by hte kernel. Please
> report
> reproducable bugs of the CLUSTERIP target to the maintainers of the
> according
> module of iptables. As far a I know Harald Welte was responsible for it.
>
> But first try using only heartbeat and do NOT add the commands manually
> before. Hope that help. Otherwise mail me or the list.
>
> --
> Dr. Michael Schwartzkopff
> MultiNET Services GmbH
> Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany
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>
> mail: misch at multinet.de
> web: www.multinet.de
>
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>
> ---
>
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