Rodrigo Barbosa wrote:
> On Thu, Jan 26, 2006 at 04:15:59PM -0500, Bowie Bailey wrote:
> > I am trying to configure load balancing for a couple of CentOS4
> > servers. In order to make it work, I need to add a hidden
> > networking device on
> > each server with the virtual IP. I found the following
> > instructions on linuxvirtualserver.org for doing this, but they
> > don't work.
> >
> > echo 1 > /proc/sys/net/ipv4/ip_forward
> > ifconfig dummy0 0.0.0.0 up
> > echo 1 > /proc/sys/net/ipv4/conf/all/hidden
> > echo 1 > /proc/sys/net/ipv4/conf/dummy0/hidden
> > ifconfig dummy0:0 172.26.20.110 up
> >
> > When I try to write to /proc/sys/net/ipv4/conf/all/hidden, the
> > system refuses to let me create the file. I'm logged in as root,
> > so why am I having permission problems?
> >
> > Also, I believe these instructions are for 2.2 or 2.4 kernels.
> > Have things changed with 2.6?
>
> No, things are exactly the same. Meaning that LVS is a separated patch
> that is not included either on the stock kernel or the RHEL one.
>
> If you really want to use LVS, you will have to apply the patch.
Hmm... I saw a reference to a kernel patch, but I thought the patch was
for the server. I am actually not using a Linux LVS server, I am using
a Foundry ServerIron to do the load balancing. It works great for
standard balancing, but now I need to do direct routing to balance two
CentOS4 servers. The instructions that came with the ServerIron just
gave a single ifconfig command to set it up (which royally screwed up
the networking).
Do I need to install the kernel patch on these machines? And why would
that affect the permissions problem I was seeing? As root, I should be
able to create a file in any directory. It may not do what I expect if
the functionality is not in the kernel, but I should be able to create
the file.
--
Bowie
