Slc6LiveHowto < LinuxSupport

LinuxSupport Web>Slc6LiveHowto (2013-03-22, ThomasOulevey) (raw view)

---+ Create a Live CD

UPDATE Feb 2013 available images :
   * CF_SLC_62_LIVE
   * CF_SLC_63_LIVE
   * CF_SLC_64_LIVE

---++ Install livecd-tools and patch it.
   * Install livecd-tools from scientific linux 6 repository (Not SLC(soon:)  and redhat one's are broken)
   * Patch live.py __write_dracut_conf function: <verbatim>
   def __write_dracut_conf(self, path):
        if not os.path.exists(os.path.dirname(path)):
            makedirs(os.path.dirname(path))
        f = open(path, "a")
        f.write('filesystems+="' + self.__extra_filesystems() + ' "\n')
        f.write('drivers+="' + self.__extra_drivers() + ' "\n')
        f.write('add_dracutmodules+=" dmsquash-live "')
        f.close()
   </verbatim>
   * Edit kickstart file if you want to add additional package. [[%ATTACHURL%/slc62-live-base.ks][slc62-live-base.ks]]
   * Generate livecd : <verbatim>
    LANG=C time livecd-creator --config=slc62-live-base.ks --fslabel="SLC6-LiveCD" --tmpdir=/home/livecd/tmp
     </verbatim>
---+ USB booting

If your USB device is /dev/sdb1
<verbatim>
livecd-iso-to-disk SLC6-LiveCD.iso /dev/sdb1
</verbatim>
A lot of option are avaialable:
<verbatim>
livecd-iso-to-disk --help
</verbatim>
---+ Add to aims2
---++ Generate initrd / vmlinuz
<verbatim>
livecd-iso-to-pxeboot SLC6-LiveCD.iso
</verbatim>

It will generate the needed files in the tftpboot directory. Please note you need to store them on AFS for initial upload in AIMS2.

---++ aims2
<verbatim>
> aims2 addimg --arch x86_64 --desc 'LiveCD SLC 6.2 for CF' --vmlinuz ./vmlinuz0 --initrd ./initrd0.img --kopts '' --name CF_SLC_62_LIVE

> aims2 showimg CF_SLC_62_LIVE --all
-------------------------------------------------------------------------------
Image NAME:                CF_SLC_62_LIVE
Architecture:              x86_64
Description:               LIVECD SLC 6.2 FOR CF
Boot options:              [none]
Authorized groups:         everybody
Kernel source:             /afs/cern.ch/project/linux/dev/CF_SLC_62_LIVE/tftpboot/vmlinuz0
Kernel size:               3941392 bytes
Kernel MD5 sum:            bcca57661f88178b5dbd34a250fe5189
Initial RAM disk source:   /afs/cern.ch/project/linux/dev/CF_SLC_62_LIVE/tftpboot/initrd0.img
Initial RAM disk size:     241896950 bytes
Initial RAM disk MD5 sum:  76ea39ca019b58fa8dfd4a218770d0c9
Image OWNER:               toulevey
Image uploaded at:         2012/04/05 09:56:39
Synchronized:              YYN
-------------------------------------------------------------------------------
</verbatim>

Be sure the Synchronised state is set to Y.

---+ Boot a host
<verbatim>
aims2 addhost --kopts 'rootflags=loop root=live:/SLC6-LiveCD.iso rootfstype=auto ro liveimg' <hostname>
aims2client pxeon --hostname <hostname> --name CF_SLC_62_LIVE
</verbatim>

---+ Workflow for CF
   * Boot livecd
   * rc.local will wget and execute a script.
   * script run ' yum install <whatever>'

---+ Test
   * Validate hardware models, drivers etc..

---+ Todo

   * Web link for the script
   * SSH access / keys before end of the month
   * HW Repository link
   *

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
ks	slc62-live-base.ks	r1	manage	20.9 K	2012-04-05 - 14:50	ThomasOulevey

Topic revision: r7 - 2013-03-22 - ThomasOulevey

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