Move a mail server

[Romeo Theriault]

I think your second idea of reinstalling and moving users is a much  
better idea than trying to get Red Hat 7.2 working on another  
machine. While your at it I would also suggest upgrading your version  
of Red Hat. If you can't afford Red Hat, Fedora and Cent OS are both  
good RedHat like alternatives. Unfortunately I don't have any  
experience with moving a sendmail server so I won't be much help there.

Romeo


On Jun 20, 2007, at 1:53 PM, Lisa Casey wrote:

> Hi,
>
> I have a sendmail server running on Redhat Linux 7.2. The load  
> average on this machine occasionally goes quite high, and once  
> before I was advised that the server needed more memory. The  
> motherboard in this computer will not support more than around 750  
> MEG RAM.
>
> We purchased a "barebones" system: case, motherboard, cpu, fan &  
> power supply in which we can put 2 GB of memory. My original idea  
> was to just move the hard drive from the old computer to the new.  
> We did this once before successfully when a motherboard crashed.  
> Unfortunately, this time it didn't  work. When I try to  boot the  
> drive in the new system, I get the following message during the  
> boot process:
>
> Kernel panic: No init found. Try passing init=option  to kernel
>
> I've done some googling and here's what I THINK the problem is  
> (feel free to let me know if you think I'm way off base here). I  
> think that the kernel on the radhat drive cannot support the new  
> hardware and  I need to upgrade the kernel. I've never upgraded a  
> kernel on Redhat before.
>
> I found a procedure for upgrading the kernel here: http:// 
> www.redhat.com/docs/manuals/linux/RHL-7.2-Manual/custom-guide/ 
> kernel.html
>
> I'm not 100% certain what kernel is currently in this machine (I  
> didn't set it up originally). uname -r says 2.4.9-31custom  but in / 
> boot I have a initrd-2.4.7-10.img (so I don't know if the kernel is  
> 2.4.9 or 2.4.7). I also can't figure out where to get a new kernel.  
> I checked the errata for redhat 7.2 on the redhat  site and found  
> several but  every one of them says "File Missing" and there's  
> nothing to click on to download it. Can anyone help me out with  
> this? Considering I'm a novice at kernel upgrading, how likely   
> might I be to render my system unbootable? That would be a disaster  
> as this is currently our only mail server.
>
> Another thought I had to solve this problem is this. Perhaps I  
> should just install a new hard drive in the new system, install  
> linux on it, then move the user accounts and mailboxes over to the  
> new drive. Does anyone know of a good "how to" for moving from one  
> Sendmail server to another?
>
> Anyone have any thoughts as to which of these two procedures might  
> be best to  solve my problem?
>
> Thanks,
>
> Lisa Casey
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