[Linux-cluster] Re: Trying to locate the bottleneck

Henry Robertson henry.robertson at hjrconsulting.com
Thu Jul 9 04:28:38 UTC 2009


>
>
> Message: 1
> Date: Wed, 8 Jul 2009 13:20:02 -0400
> From: Jeff Sturm <jeff.sturm at eprize.com>
> Subject: RE: [Linux-cluster] Trying to locate the bottleneck
> To: "linux clustering" <linux-cluster at redhat.com>
> Message-ID:
>        <64D0546C5EBBD147B75DE133D798665F02FDC2F8 at hugo.eprize.local>
> Content-Type: text/plain; charset="us-ascii"
>
> I think this is created when you first run iptables.  If you have no NAT
> rules on the load balancer, the ip_conntrack_max setting won't exist,
> and you'll need to look somewhere else for the problem.
>
> -Jeff
>
> > -----Original Message-----
> > From: linux-cluster-bounces at redhat.com
> [mailto:linux-cluster-bounces at redhat.com]
> > On Behalf Of Raymond Setchfield
> > Sent: Wednesday, July 08, 2009 11:13 AM
> > To: linux clustering
> > Subject: Re: [Linux-cluster] Trying to locate the bottleneck
> >
> > Hi Guys
> >
> > I am trying to locate ip_conntrack_max within CentOS 5.3 but it
> doesn't
> > appear to be where I expect it to be. I have googled for this and from
> > what I have read it should be located within
> >
> > /proc/sys/net/ipv4/ip_conntrack_max
> >
> > Which is where I thought it would be but unfortunately it isn't.
> >
> > Here is some output
> >
> > [root at loadbalancer-01 ~]# grep conn /proc/slabinfo
> > ip_vs_conn             0      0    128   30    1 : tunables  120   60
> > 8 : slabdata      0      0      0
> >
> > [root at loadbalancer-01 ~]# rpm -qa | grep kernel
> > kernel-headers-2.6.18-53.1.14.el5
> > kernel-devel-2.6.18-53.1.14.el5
> > kernel-2.6.18-53.1.14.el5
> >
> > [root at loadbalancer-01 ~]# cat
> /proc/sys/net/ipv4/netfilter/ip_conntrack_max
> > cat: /proc/sys/net/ipv4/netfilter/ip_conntrack_max: No such file or
> > directory
> >
> >
> > I have also checked within  /etc/sysctl.conf and nothing.
> >
> > Can someone help me?
> >
> > Thanks in advance
> >
> > Raymond
> >



Try 'modprobe ip_conntrack' and see if it shows up. After that I was able to
set the value in /etc/sysctl.conf

Good luck!

Henry
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