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apt-get upgrade question

Asked by XnimrodunterX

i am running ubuntu server 8.10

when i do a apt-get update and then an apt-get upgrade, i get the following message

The following packages have been kept back:
  linux-image-server linux-server

why are these to not being installed? and do i need them? if i need them how do i install them? will my server crash if i install them?

Thanks in advance

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A. Denton
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Luis F. Lopez (luis.lopez) said : 		#1

apt-get upgrade will not install kernel packages. If you wish to install these, you should run:

apt-get dist-upgrade

In case you have issues, you can always pres <Esc> on the grub prompt and choose an older kernel to boot from (by default the kernel packages are not removed unless specified)

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XnimrodunterX (sgoldschmidt) said : 		#2

Should i upgrade to the latest kernal? is it benefial? security wise or system wide?

of am i fine where i am?

i am pretty new to linux and don't want to screw anything up.

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A. Denton (aquina) said : 		#3

Hello XnimrodunterX,

the package you mentioned ("linux-image-server") si unknown to me. The only packages I know are "linux-server" which is the Complete Linux kernel on Server Equipment (metapackage/restricted) and "linux-image-<version>-server" (base). I assume you require neither the first nor the second one except you run a server. On a client machne you require the distribution kernel and kernel headers.

On our client systems an upgrade performed via (1) apt-get update and then (2) apt-get upgrade also install a newer kernel for the distribution (hardy, intrepid, etc.) if neccessary. On servers this is different.

I recommend you to check the new files for their comments. Normally you get informed about whats new about them and how important these changes are. It's generally advised to update your kernel whenever a new version with security fixes is available.

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XnimrodunterX (sgoldschmidt) said : 		#4

where can i check what is included in these new files?

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Best A. Denton (aquina) said : 		#5

You have the following options:

1] https://lists.ubuntu.com/

Especially ubuntu-security-announce which is a must-have for every server administrator.

2] http://74.125.43.132/translate_c?hl=de&ie=UTF-8&sl=de&tl=en&u=http://wiki.ubuntuusers.de/Automatische_Updates&prev=_t&usg=ALkJrhggFV9ib8GANRpt0XaS8q9yfLtokg#Ohne-grafische-Oberflaeche

This wil give you a hint on cron and automated updates.

3] Use the graphical update manager and klick on a package to see its details.

Good Luck! ;-)

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XnimrodunterX (sgoldschmidt) said : 		#6

Thanks Aquina, that solved my question.