first of all, you should not give internet access to each of your server, bad idea, unless it's a requirement with the applications...

linux can be hack too, if u don't know how to secure it.

As we already have SMT for updating Novell servers and also we have subscription to use RHN, we may want to go for it. But dessiion still need to be taken.

You are unfortunately missing one point. The subscription to RHN is not what I was discussing.

If you want to open all your machines to RHN and grab the updates that way, it can be messy. If you wanted to get a SANE solution, then RHN Satellite server (A SEPARATE PRODUCT) is the one that was being discussed.

You create your own RHN catalog locally and can do more to manage your machines. However, that is EXPENSIVE.

First thing, we dont want to connect all my RHEl servers to the internet (RHN). Second thing we dont have RHN satilite server (do we need to buy seperate license?). so other option you are saying is create your own RHN catalog locally and can do more to manage your machines. what we need to for this? do we need to buy any license for it?

Since all these options seems to be messy and expensive, what other options we have to update RHEL servers except ZLM.

Thanks for info.

Yes, that was the point was that the RHN Satellite server is another license for the host and PER CLIENT, so each machine you manage with RHN Sat is an additional fee. This is expensive

ZLM, however can be run on any SLES or even RHEL box with a minimal charge, say about $600 for the host and $40 or so per client.

The last time I looked at RHN Satellite it was in the over $10K per host range.

There are other options for managing the updates, however both RHN Satellite and ZLM will work with your current subscriptions. You have what used to be opsware (costs are high too but has a lot of great features) and some other products like it.

Thanks for your help Mark.

Since our company dont want spend any money in this bad ecaonamy, we are trying to find out for free options.

I found out YUM from other linux forums...
For RHEL/CentOS5, as root:

Code:
vi /etc/yum/yum-updatesd.confLook for:

Code:
do_update=yes
do_download=yes
do_download=yes

make sure that the yum-updatesd service is running.

Code:
chkconfig yum-updatesd on
service yum-updatesd start

so updated on YUM conf file on one server, But I'm not quite sure how that work. I'm trying test it some how. Hope this will work for me. Thanks

sometimes, free costs money in accountability, downtime, etc. If you don't have the experience to do this, and are not using something like Fedora or CentOS, then you have no option to use things like spacewalk, which is RHN satellite for free (but not able to be used, out of the box on RHEL).