On Wed, March 2, 2005 11:14 am, Chaitanya Krishna A said:
> hi,
>
> is it possible to make an yum update from centos-3.4
> to centos-4 or not?
>
> thanks.
> chaitanya.
-----------------------------------------
>From the release announcement:
To upgrade from CentOS 3.X or CentOS 2.1 please read this appendix:
http://www.centos.org/docs/4/html/rhel-ig-x8664-multi-en-4/ap-upgrade.html
~ If this upgrade method is not adequate please see this (pending)
alternative CentOS 4.x upgrade techniques FAQ entry:
http://www.centos.org/modules/smartfaq/faq.php?faqid=27
Due to the large number of changes in the core system of CentOS4,
including the introduction of Udev and SELinux on a 2.6 Kernel, yum
based update and upgrade options are not safe methods to upgrade from
CentOS 3, and would cause unpredictable results.
-------------------------------------------
It is possible (but highly discouraged) to upgrade via yum.
You will have issues if you currently use LVM ... there are also issues
with extended ext2/ext3 file features with SELinux. There is a process
where you can force install the kernel, module tools and upgrade with the
old yum (by pointing to the new repo) ... but it doesn't work all the
time, or reliably.
The "linux upgradeany" install works much better ... but even it is not
100% effective.
As recommended by the documentation, the best thing to do is a full
reinstall when upgrading from CentOS-3.x or CentOS-2.1 to CentOS-4.
> --- Bruno Depero <bruno.depero@xxxxxxxxxxx> wrote:
>
>> few messages ago I wrote just to install three rpms
>> from the 4 final to
>> change redhat-release, yum.conf and
>> yum.repos/centos*
>> centos-release-4-0.1.i386.rpm
>> yum-2.2.0-1.centos4.2.noarch.rpm
>> centos-yumconf-4-2.noarch.rpm
>>
>> hope this can help for yum... starting from an
>> 4.0rc1... from older
>> releases maybe better to start from cd/dvd with
>> linux upgradeany or to
>> do a fresh install and move your
>> configurations/applications...
>>
>> cheers,
>> Bruno
>>
>> Chaitanya Krishna A ha scritto:
>>
>> >hi,
>> >
>> >nice to know centos-4 has been released.
>> >
>> >pretty much excited to update to centos-4.
>> >
>> >can someone help me out with the yum update. how do
>> i
>> >do the upgrade with yum? do i need to change in the
>> >yum.conf file which i am adding below. or will this
>> >do.
>> >
>> >[main]
>> >cachedir=/var/cache/yum
>> >debuglevel=2
>> >logfile=/var/log/yum.log
>> >pkgpolicy=newest
>> >distroverpkg=redhat-release
>> >installonlypkgs=kernel kernel-smp kernel-hugemem
>> >kernel-enterprise kernel-debug kernel-unsupported
>> >kernel-smp-unsupported ke
>> >rnel-hugemem-unsupported
>> >tolerant=1
>> >exactarch=1
>> >
>> >[base]
>> >name=CentOS-$releasever - Base
>>
>>baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
>> >gpgcheck=1
>> >
>> >#released updates
>> >[update]
>> >name=CentOS-$releasever - Updates
>>
>>baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
>> >gpgcheck=1
>> >
>> >#packages used/produced in the build but not
>> released
>> >[addons]
>> >name=CentOS-$releasever - Addons
>>
>>baseurl=http://mirror.centos.org/centos/$releasever/addons/$basearch/
>> >gpgcheck=1
>> >
>> >#additional packages that may be useful
>> >[extras]
>> >name=CentOS-$releasever - Extras
>>
>>baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
>> >gpgcheck=1
>> >
>> >#packages in testing
>> >#[testing]
>> >
>> >thanks.
>> >chaitanya.
