AW: [Linux-HA] my installation of ClusterIP
martin.rosenmueller at gmx.de
Thu Oct 11 05:50:59 MDT 2007
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
You can reproduce the bug by adding a rule and then delete the rule - the
kernel will crash.
This problem is known by the kernel developer and fixed with kernel 2.6.21
For your problem you can use the patch and self compile this module!
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
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
> 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 184.108.40.206 -i eth0 -j CLUSTERIP --new
> > 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
> using that command several times on one node without deleting the rule on
> node between two commands is not very welcomed by hte kernel. Please
> reproducable bugs of the CLUSTERIP target to the maintainers of the
> 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
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