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how do I uninstall kernel?

Discussion in 'General Discussion' started by ktvktv, Jan 9, 2004.

  1. ktvktv

    ktvktv Member

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    hi

    with rpm -qa | grep kernel

    I got

    kernel-2.4.18-27.7.x
    kernel-2.4.20-28.7
    kernel-bigmem-2.4.20-28.7
    kernel-smp-2.4.18-27.7.x
    kernel-2.4.20-28.7
    kernel-smp-2.4.20-28.7
    kernel-smp-2.4.20-28.7
    kernel-smp-2.4.20-28.7
    kernel-smp-2.4.20-28.7
    kernel-source-2.4.20-20.7
    kernel-2.4.20-28.7
    kernel-2.4.20-28.7


    is it possible to remove all of those 2.4.20* kernel?
    I've cleaned up grub.conf but those kernel still exists

    thanks
     
  2. vijaykiran

    vijaykiran Well-Known Member

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    Location:
    kernel
    login to your server using SSH
    first find out the kernel version you are using by:
    uname -r

    Dont delete the version you are using :D and give the following commands for the kernels you dont need..

    rpm -e kernel-2.4.18-27.7.x
    rpm -e kernel-2.4.20-28.7
    etc...

    Make sure what
     
  3. ktvktv

    ktvktv Member

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    hi thanks for the help

    but rpm -e cant' uninstall those packages (because of multiple packages under the same name)

    you see, I have 4 2.4.20-28.7 and etc

    server will not let me uninstall it with "-e" only
    is there any command that can force the server to uninstall it?

    thanks
     
  4. vijaykiran

    vijaykiran Well-Known Member

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    Location:
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    try

    rpm -e --allmatches kernel-2.4.20-28.7

    If that doesn't work...
    you need to delete all the files manaully and then update the rpm db.

    Again : BE CAREFUL : DON'T UNINSTALL THE CURRENT ONE
     
  5. ktvktv

    ktvktv Member

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    hi

    I've successfully removed several unused kernels

    but when it comes to smp-2.4.20-28.7 ,
    it said

    root@ns1 [~]# rpm -e --allmatches kernel-smp-2.4.20-28.7
    error: removing these packages would break dependencies:
    kernel >= 2.4.20 is needed by iptables-1.2.8-8.72.3


    is this dependencies important? is it possible to get rid of this
    I double checked uname -r and 2.4.20-28.7 is not the kernel I am using.


    can I just bypass this warning message and remove it?
    (right now I have 4 kernel-smp-2.4.20-28.7 and it's not in use.)

    thanks
     
    #5 ktvktv, Jan 9, 2004
    Last edited: Jan 9, 2004
  6. vijaykiran

    vijaykiran Well-Known Member

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    Location:
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    If your kernel is not in use then just give the command

    rpm -e --allmatches --nodeps kernel-smp-2.4.20-28.7

    Again : BE CAREFUL : DON'T UNINSTALL THE CURRENT ONE
     
  7. ktvktv

    ktvktv Member

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    thanks for you help
    I finally removed all unused kernels

    I tried to install kernel again but it's panicking again
    maybe I need to compile it from source code but I am capable of doing that , sigh

    I just wonder if it's that important to upgrade kernel?
     
  8. vijaykiran

    vijaykiran Well-Known Member

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    :) Nice
    Always best to keep your kernel to the latest stable version..
     
  9. ktvktv

    ktvktv Member

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    will hackers be able to break into my server or will they only be able to bring down my server?
     
  10. vijaykiran

    vijaykiran Well-Known Member

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    hmm..
    hacking not only depends on the kernel version...
    you need to look into many other issues like
    Firewalls
    Services running
    Port blocking etc...
     
  11. ktvktv

    ktvktv Member

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    sorry one more question

    I checked /boot

    root@ns1 [/boot]# dir
    ./ module-info@
    ../ module-info-2.4.18-27.7.x
    boot.0800 module-info-2.4.18-27.7.xsmp
    boot.b os2_d.b
    chain.b quota.user*
    config-2.4.18-27.7.x System.map@
    config-2.4.18-27.7.xsmp System.map-2.4.18-27.7.x
    grub/ System.map-2.4.18-27.7.xsmp
    initrd-2.4.18-27.7.x.img vmlinux-2.4.18-27.7.x*
    initrd-2.4.18-27.7.xsmp.img vmlinux-2.4.18-27.7.xsmp*
    kernel.h vmlinuz@
    lost+found/ vmlinuz-2.4.18-27.7.x
    map vmlinuz-2.4.18-27.7.xsmp
    message


    both vmlinux-2.4.18-27.7.x* and vmlinux-2.4.18-27.7.xsmp* have a * mark behind them. is this normal ?

    thanks
     
  12. vijaykiran

    vijaykiran Well-Known Member

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    Yes, its perfectly normal ...
    Use "ls" not "dir" :D
     
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