[CentOS] Re: Migration from RH9

Craig White craigwhite at azapple.com
Thu Nov 22 15:55:09 UTC 2007

On Thu, 2007-11-22 at 09:51 -0500, Ugo Bellavance wrote:
> Ugo Bellavance wrote:
> > Hi,
> > 
> >     I will probably have to migrate a few servers running Red Hat 9 to 
> > CentOS and I'd like to have opinions.  One server to migrate is running 
> > Fedora core 4.
> > 
> > Anyone has experience with that?  I'm not too scared about sendmail, 
> > Bind, apache/PHP (except that maybe the PHP upgrade may break the 
> > website, but this is easily managed and can be tested), ftp.
> > 
> > However, I don't know dansguardian much, but I guess it would be a good 
> > idea to integrate it with squid.
> > 
> > I don't know squid much, but depending on what they're doing with it, it 
> > should be fairly simple.
> > 
> > For samba, are there major changes between the default version in RH9 
> > and Centos4 or 5?
> > 
> > Anyone migrated a perforce environment?
> > 
> > I'm also wondering whether I migrate them to centos3, 4, or 5.  3 would 
> > be to make the transition easier, while still letting them have many 
> > years of security updates.
> > 
> > 4 is the version I use most, I barely touched 5.
> > 
> > 5 would be for xen and... your ideas?
> > 
> > I usually use OpenVZ for virtualization, but they might want to 
> > virtualize windows servers too, which OpenVZ can't do.
> > 
> > Any input would be appreciated,
> No answer yet... I guess I must have done something wrong in my post.
> I'll try to get more details about what is to be done and I'll post 
> again.  Still, if you have an advice about anything in my original post, 
>   please let me know.
questions were far to general to get specific responses

There is no supported upgrade path for either RHL 9 or Fedora 4 to
CentOS but you certainly can use anaconda to do that by appending...

linux upgradeany

to the boot parameters of the CentOS 3/4/5 installer

You get to keep the pieces that are broken.

per info on Centos web site...

CentOS 3.x is in maintenance updates only mode...hardly makes sense to
me to install this on anything UNLESS you have specific software that
will only run on 2.4 kernels

CentOS 4.x enters into maintenance updates only mode March 1st, 2008 -
not that far off

I don't know anything about 'perforce environment' and thus have nothing
to offer. Similarly, I haven't use squid for many years and likewise

Apache/PHP/MySQL are all starting to show their age on CentOS-4.x but
thankfully, there is CentOS Plus repository for updated php & mysql but
if I were thinking in terms of updates that I didn't have to bother with
for a few years, I would certainly go all the way to CentOS 5

You might find some useful information here...



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