RH 7.2 Cannot reconfigure eth0

[Robert Monical]

I am a Solaris user trying to get up to speed on Red Hat. Using RH 7.2. I'm liking a lot of things about Linux/Gnome verses Solaris/CDE.

Is there a guide to Linux for Solaris Admins out there?

Here are some Solaris actions that I cannot figure out the (low level)  Linux equivalent. I think the GUI tool is KAPUT.
Change hostname: edit /etc/hostname.<interface_id>
Change IP address tied to an interface: edit /etc/hosts
Change gateway: edit /etc/defaultrouter
Change netmask edit /etc/netmasks

Linux seems to combine all of this in an interface specific file in /etc/sysconfig.
But it seems like it cannot be changed after installation
I use the GUI tool. But it does not take. For example, I enter the IP address and hostname for eth0, but it never makes into hosts. Should it?  As I fool around, I periodically lose the ability to run the window manager. Then I edit a file called network, and it comes back. 

I got to where I could boot up (get an IP address used by another interface) error initializing eth0 . Then assign an interface its IP address using ifconfig. And I can add the default route at the command prompt. So the system is working so long as I don't have to restart whilst I am not in the office.

The error on boot for eth0 is :
some other host already uses address 192.168.60.45.  Much to the surprise of the other systems on the subnetwork.

ifup reaches this conclusion after running a program called arping.  So I comment that check out, and all seems to be well.

After these problems, I installed initscripts-6.43-1.i386.rpm. But maybe it was too late.


Is IP interface management simply broken in this release of Red Hat?
Are there more bugfixes I need?
Is there such a thing as a consolidated patch download?



Robert Monical
Reservation Technologies, Inc.
Technology Solutions for Destination Marketing Organizations
President and Technologist
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