ubuntu server

Dear Experts:

Installed ubuntu 10.4 LTS on the dell server R710 after that want to upgrade, hence executed
# sudo apt-get update
# sudo apt-get upgrade

sudo apt-get upgrade
Reading package lists... Done
Building dependency tree      
Reading state information... Done
The following packages have been kept back:
  linux-headers-server linux-image-server linux-server
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

above packages did not get install , should manually install please suggest.


D_wathiAsked:
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Sikhumbuzo NtsadaConnect With a Mentor Senior IT TechnicianCommented:
Hi D wathi, what do you use this server for? You see there are issues with upgrading just the packages on a server where you  installed custom programs. It happens that after the upgrade some programs need to be re-configured and so forth.

So before we gie you a go ahead what is the server used for?
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Sikhumbuzo NtsadaConnect With a Mentor Senior IT TechnicianCommented:
I am afraid upgradin the normal way does not yeild good results all the time, see the following tutorial:

http://www.jonboy60.com/2011/04/12/howto-upgrade-from-ubuntu-10-x-to-ubuntu-11-natty-narwhal/
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sreedhar2uCommented:

have you applied all updates to your current version of Ubuntu before you upgrade?

https://help.ubuntu.com/community/MaverickUpgrades
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D_wathiAuthor Commented:
Thanks for the reply, it got upgraded when done the below

sudo aptitude safe-upgrade
Reading package lists... Done
Building dependency tree      
Reading state information... Done
Reading extended state information      
Initializing package states... Done
Writing extended state information... Done
Resolving dependencies...
Resolving dependencies...
The following NEW packages will be installed:
  linux-headers-2.6.32-31{a} linux-headers-2.6.32-31-server{a}
  linux-image-2.6.32-31-server{a}
The following packages will be REMOVED:
  linux-headers-2.6.32-28{u} linux-headers-2.6.32-28-server{u}
The following packages will be upgraded:
  linux-headers-server linux-image-server linux-server
3 packages upgraded, 3 newly installed, 2 to remove and 0 not upgraded.
Need to get 31.5MB/42.2MB of archives. After unpacking 128MB will be used.
Do you want to continue? [Y/n/?] Y

Please suggest is this okay.
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D_wathiAuthor Commented:
Thanks for the reply,  this server i have to configure for mail server ( zimbra collabration suite), please suggest ,
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Sikhumbuzo NtsadaSenior IT TechnicianCommented:
If you have not setup your Zimbra then go ahead and upgrade, there should bot be any issues.
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mccrackyConnect With a Mentor Commented:
aptitude is being more explicit in what might happen.  apt-get isn't.

the linux kernel isn't an "upgrade" as such.  It installs the newer one as a new install rather than an upgrade. (upgrading the virtual package without the version in the name).

If it's going to be a production mail server, after you get all the upgrades and installs done, you need to be more careful in what you upgrade/install.  My suggestion would be to edit the /etc/apt/sources.list file commenting out all the repositories except the security ones.
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