Ubuntu Diskless 16.04.3 LTS (Xenial Xerus)





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I am following this HowTo on setting up a diskless ubuntu client.




  1. I am using 2 virtualbox VMs one server and one client.

  2. I am trying to boot the client using pxe but I get a kernel panic error like
    THIS

  3. I am using Ubuntu 16.04.3 LTS (Xenial Xerus) on both server and client.

  4. The server is a FULL install while client is minimal install.


The client connects to the server, gets an IP and the boot process starts but then i get a kernel panic error. Please tell me what I am doing wrong here. I have followed the tutorial word by word.



Here is my setup:



Ubuntu Server has dhcp server configured for pxe boot.



I ran the following commands on minimal ubuntu client:




  1. sudo cp /boot/vmlinuz-uname -r ~

  2. Changed the BOOT flag in /etc/initramfs-tools/initramfs.conf to BOOT=nfs

  3. Changed the MODULES flag in /etc/initramfs-tools/initramfs.conf to MODULES=netboot

  4. Put modules needed for network adapters into /etc/initramfs-tools/modules

  5. Ran mkinitramfs mkinitramfs -o ~/initrd.img-uname -r

  6. Copied OS files to Ubuntu server (192.168.2.3/nfsroot/):


     mount -t nfs -onolock 192.168.2.3:/nfsroot /mnt 
    cp -ax /. /mnt/.
    cp -ax /dev/. /mnt/dev/. (This command didn't work)



  7. Copied kernel and initrd to tftp root.

  8. /tftpboot/ now contains vmlinuz and initrd image made in step 5

  9. Configured fstab on /nfsroot/etc/fstab. It contains the information the client will use to mount file systems on boot.


/nfsroot/etc/fstab



proc /proc proc defaults 0 0
/dev/nfs / nfs defaults 1 1
none /tmp tmpfs defaults 0 0
none /var/run tmpfs defaults 0 0
none /var/lock tmpfs defaults 0 0
none /var/tmp tmpfs defaults 0 0
/dev/hdc /media/cdrom0 udf,iso9660 user,noauto 0 0


/tftpboot/pxelinux.cfg/default



LABEL linux
DEFAULT vmlinuz-4.10.0-28-generic
INITRD initrd.img-4.4.0-87-generic
APPEND root=/dev/nfs nfsroot=192.168.2.3:/nfsroot ip=dhcp rw


/etc/default/tftpd-hpa



TFTP_USERNAME="tftp"
TFTP_DIRECTORY="/tftpboot"
TFTP_ADDRESS=":69"
TFTP_OPTIONS="--secure"


/etc/default/dhcp/dhcpd.conf



allow booting;
allow bootp;
subnet 192.168.2.0 netmask 255.255.255.0 {
range 192.168.2.5 192.168.2.250;
option broadcast-address 192.168.2.255;
option routers 192.168.2.10;
option domain-name-servers 192.168.2.11;
filename "pxelinux.0";
}
# force the client to this ip for pxe.
# This is only necessary assuming you want to send different images to differen$
host pxe_client {
hardware ethernet 00:00:00:00:12:34;
fixed-address 192.168.2.7;
}


PLEASE HELP!!!










share|improve this question































    4















    I am following this HowTo on setting up a diskless ubuntu client.




    1. I am using 2 virtualbox VMs one server and one client.

    2. I am trying to boot the client using pxe but I get a kernel panic error like
      THIS

    3. I am using Ubuntu 16.04.3 LTS (Xenial Xerus) on both server and client.

    4. The server is a FULL install while client is minimal install.


    The client connects to the server, gets an IP and the boot process starts but then i get a kernel panic error. Please tell me what I am doing wrong here. I have followed the tutorial word by word.



    Here is my setup:



    Ubuntu Server has dhcp server configured for pxe boot.



    I ran the following commands on minimal ubuntu client:




    1. sudo cp /boot/vmlinuz-uname -r ~

    2. Changed the BOOT flag in /etc/initramfs-tools/initramfs.conf to BOOT=nfs

    3. Changed the MODULES flag in /etc/initramfs-tools/initramfs.conf to MODULES=netboot

    4. Put modules needed for network adapters into /etc/initramfs-tools/modules

    5. Ran mkinitramfs mkinitramfs -o ~/initrd.img-uname -r

    6. Copied OS files to Ubuntu server (192.168.2.3/nfsroot/):


       mount -t nfs -onolock 192.168.2.3:/nfsroot /mnt 
      cp -ax /. /mnt/.
      cp -ax /dev/. /mnt/dev/. (This command didn't work)



    7. Copied kernel and initrd to tftp root.

    8. /tftpboot/ now contains vmlinuz and initrd image made in step 5

    9. Configured fstab on /nfsroot/etc/fstab. It contains the information the client will use to mount file systems on boot.


    /nfsroot/etc/fstab



    proc /proc proc defaults 0 0
    /dev/nfs / nfs defaults 1 1
    none /tmp tmpfs defaults 0 0
    none /var/run tmpfs defaults 0 0
    none /var/lock tmpfs defaults 0 0
    none /var/tmp tmpfs defaults 0 0
    /dev/hdc /media/cdrom0 udf,iso9660 user,noauto 0 0


    /tftpboot/pxelinux.cfg/default



    LABEL linux
    DEFAULT vmlinuz-4.10.0-28-generic
    INITRD initrd.img-4.4.0-87-generic
    APPEND root=/dev/nfs nfsroot=192.168.2.3:/nfsroot ip=dhcp rw


    /etc/default/tftpd-hpa



    TFTP_USERNAME="tftp"
    TFTP_DIRECTORY="/tftpboot"
    TFTP_ADDRESS=":69"
    TFTP_OPTIONS="--secure"


    /etc/default/dhcp/dhcpd.conf



    allow booting;
    allow bootp;
    subnet 192.168.2.0 netmask 255.255.255.0 {
    range 192.168.2.5 192.168.2.250;
    option broadcast-address 192.168.2.255;
    option routers 192.168.2.10;
    option domain-name-servers 192.168.2.11;
    filename "pxelinux.0";
    }
    # force the client to this ip for pxe.
    # This is only necessary assuming you want to send different images to differen$
    host pxe_client {
    hardware ethernet 00:00:00:00:12:34;
    fixed-address 192.168.2.7;
    }


    PLEASE HELP!!!










    share|improve this question



























      4












      4








      4








      I am following this HowTo on setting up a diskless ubuntu client.




      1. I am using 2 virtualbox VMs one server and one client.

      2. I am trying to boot the client using pxe but I get a kernel panic error like
        THIS

      3. I am using Ubuntu 16.04.3 LTS (Xenial Xerus) on both server and client.

      4. The server is a FULL install while client is minimal install.


      The client connects to the server, gets an IP and the boot process starts but then i get a kernel panic error. Please tell me what I am doing wrong here. I have followed the tutorial word by word.



      Here is my setup:



      Ubuntu Server has dhcp server configured for pxe boot.



      I ran the following commands on minimal ubuntu client:




      1. sudo cp /boot/vmlinuz-uname -r ~

      2. Changed the BOOT flag in /etc/initramfs-tools/initramfs.conf to BOOT=nfs

      3. Changed the MODULES flag in /etc/initramfs-tools/initramfs.conf to MODULES=netboot

      4. Put modules needed for network adapters into /etc/initramfs-tools/modules

      5. Ran mkinitramfs mkinitramfs -o ~/initrd.img-uname -r

      6. Copied OS files to Ubuntu server (192.168.2.3/nfsroot/):


         mount -t nfs -onolock 192.168.2.3:/nfsroot /mnt 
        cp -ax /. /mnt/.
        cp -ax /dev/. /mnt/dev/. (This command didn't work)



      7. Copied kernel and initrd to tftp root.

      8. /tftpboot/ now contains vmlinuz and initrd image made in step 5

      9. Configured fstab on /nfsroot/etc/fstab. It contains the information the client will use to mount file systems on boot.


      /nfsroot/etc/fstab



      proc /proc proc defaults 0 0
      /dev/nfs / nfs defaults 1 1
      none /tmp tmpfs defaults 0 0
      none /var/run tmpfs defaults 0 0
      none /var/lock tmpfs defaults 0 0
      none /var/tmp tmpfs defaults 0 0
      /dev/hdc /media/cdrom0 udf,iso9660 user,noauto 0 0


      /tftpboot/pxelinux.cfg/default



      LABEL linux
      DEFAULT vmlinuz-4.10.0-28-generic
      INITRD initrd.img-4.4.0-87-generic
      APPEND root=/dev/nfs nfsroot=192.168.2.3:/nfsroot ip=dhcp rw


      /etc/default/tftpd-hpa



      TFTP_USERNAME="tftp"
      TFTP_DIRECTORY="/tftpboot"
      TFTP_ADDRESS=":69"
      TFTP_OPTIONS="--secure"


      /etc/default/dhcp/dhcpd.conf



      allow booting;
      allow bootp;
      subnet 192.168.2.0 netmask 255.255.255.0 {
      range 192.168.2.5 192.168.2.250;
      option broadcast-address 192.168.2.255;
      option routers 192.168.2.10;
      option domain-name-servers 192.168.2.11;
      filename "pxelinux.0";
      }
      # force the client to this ip for pxe.
      # This is only necessary assuming you want to send different images to differen$
      host pxe_client {
      hardware ethernet 00:00:00:00:12:34;
      fixed-address 192.168.2.7;
      }


      PLEASE HELP!!!










      share|improve this question
















      I am following this HowTo on setting up a diskless ubuntu client.




      1. I am using 2 virtualbox VMs one server and one client.

      2. I am trying to boot the client using pxe but I get a kernel panic error like
        THIS

      3. I am using Ubuntu 16.04.3 LTS (Xenial Xerus) on both server and client.

      4. The server is a FULL install while client is minimal install.


      The client connects to the server, gets an IP and the boot process starts but then i get a kernel panic error. Please tell me what I am doing wrong here. I have followed the tutorial word by word.



      Here is my setup:



      Ubuntu Server has dhcp server configured for pxe boot.



      I ran the following commands on minimal ubuntu client:




      1. sudo cp /boot/vmlinuz-uname -r ~

      2. Changed the BOOT flag in /etc/initramfs-tools/initramfs.conf to BOOT=nfs

      3. Changed the MODULES flag in /etc/initramfs-tools/initramfs.conf to MODULES=netboot

      4. Put modules needed for network adapters into /etc/initramfs-tools/modules

      5. Ran mkinitramfs mkinitramfs -o ~/initrd.img-uname -r

      6. Copied OS files to Ubuntu server (192.168.2.3/nfsroot/):


         mount -t nfs -onolock 192.168.2.3:/nfsroot /mnt 
        cp -ax /. /mnt/.
        cp -ax /dev/. /mnt/dev/. (This command didn't work)



      7. Copied kernel and initrd to tftp root.

      8. /tftpboot/ now contains vmlinuz and initrd image made in step 5

      9. Configured fstab on /nfsroot/etc/fstab. It contains the information the client will use to mount file systems on boot.


      /nfsroot/etc/fstab



      proc /proc proc defaults 0 0
      /dev/nfs / nfs defaults 1 1
      none /tmp tmpfs defaults 0 0
      none /var/run tmpfs defaults 0 0
      none /var/lock tmpfs defaults 0 0
      none /var/tmp tmpfs defaults 0 0
      /dev/hdc /media/cdrom0 udf,iso9660 user,noauto 0 0


      /tftpboot/pxelinux.cfg/default



      LABEL linux
      DEFAULT vmlinuz-4.10.0-28-generic
      INITRD initrd.img-4.4.0-87-generic
      APPEND root=/dev/nfs nfsroot=192.168.2.3:/nfsroot ip=dhcp rw


      /etc/default/tftpd-hpa



      TFTP_USERNAME="tftp"
      TFTP_DIRECTORY="/tftpboot"
      TFTP_ADDRESS=":69"
      TFTP_OPTIONS="--secure"


      /etc/default/dhcp/dhcpd.conf



      allow booting;
      allow bootp;
      subnet 192.168.2.0 netmask 255.255.255.0 {
      range 192.168.2.5 192.168.2.250;
      option broadcast-address 192.168.2.255;
      option routers 192.168.2.10;
      option domain-name-servers 192.168.2.11;
      filename "pxelinux.0";
      }
      # force the client to this ip for pxe.
      # This is only necessary assuming you want to send different images to differen$
      host pxe_client {
      hardware ethernet 00:00:00:00:12:34;
      fixed-address 192.168.2.7;
      }


      PLEASE HELP!!!







      boot server kernel pxe






      share|improve this question















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      share|improve this question




      share|improve this question








      edited Jan 7 '18 at 18:39







      umar14

















      asked Jan 7 '18 at 18:31









      umar14umar14

      215




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          1 Answer
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          Your /tftpboot/pxelinux.cfg/default file is wrong.
          It must be something like this: (just example, but kernel and initrd versions must be the same and the initrd is those, that was generated with mkinitramfs)



          LABEL linux
          KERNEL vmlinuz-2.6.15-23-686
          APPEND root=/dev/nfs initrd=initrd.img-2.6.15-23-686 nfsroot=192.168.2.2:/nfsroot ip=dhcp rw






          share|improve this answer
























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            Your /tftpboot/pxelinux.cfg/default file is wrong.
            It must be something like this: (just example, but kernel and initrd versions must be the same and the initrd is those, that was generated with mkinitramfs)



            LABEL linux
            KERNEL vmlinuz-2.6.15-23-686
            APPEND root=/dev/nfs initrd=initrd.img-2.6.15-23-686 nfsroot=192.168.2.2:/nfsroot ip=dhcp rw






            share|improve this answer




























              0














              Your /tftpboot/pxelinux.cfg/default file is wrong.
              It must be something like this: (just example, but kernel and initrd versions must be the same and the initrd is those, that was generated with mkinitramfs)



              LABEL linux
              KERNEL vmlinuz-2.6.15-23-686
              APPEND root=/dev/nfs initrd=initrd.img-2.6.15-23-686 nfsroot=192.168.2.2:/nfsroot ip=dhcp rw






              share|improve this answer


























                0












                0








                0







                Your /tftpboot/pxelinux.cfg/default file is wrong.
                It must be something like this: (just example, but kernel and initrd versions must be the same and the initrd is those, that was generated with mkinitramfs)



                LABEL linux
                KERNEL vmlinuz-2.6.15-23-686
                APPEND root=/dev/nfs initrd=initrd.img-2.6.15-23-686 nfsroot=192.168.2.2:/nfsroot ip=dhcp rw






                share|improve this answer













                Your /tftpboot/pxelinux.cfg/default file is wrong.
                It must be something like this: (just example, but kernel and initrd versions must be the same and the initrd is those, that was generated with mkinitramfs)



                LABEL linux
                KERNEL vmlinuz-2.6.15-23-686
                APPEND root=/dev/nfs initrd=initrd.img-2.6.15-23-686 nfsroot=192.168.2.2:/nfsroot ip=dhcp rw







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Feb 13 at 6:01









                SamuilSamuil

                1




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