Building a fedora spin

 

Install and Configure mock

# dnf install mock
# usermod -a -G mock <user>

Here’s how you setup a Fedora 27 x86_64 environment.

$ mock -r fedora-27-x86_64 --init
$ mock -r fedora-27-x86_64 --install lorax-lmc-novirt git vim-minimal pykickstart

For a different arch or release modify the mock configuration file.

Enable network access in mock. Modify config_opts[‘rpmbuild_networking’] to True.

$ sudo vi /etc/mock/site-defaults.cfg

Kickstart files

Inside the mock chroot or container, clone the kickstarts git repository. If your system is using SELinux it needs to be set to Permissive mode while running lorax. The –old-chroot might not be needed for you. I had to use it because I had problem with loop device inside mock.

$ sudo setenforce 0
$ mock -r fedora-27-x86_64 --shell --old-chroot
<mock-chroot> sh-4.4# git clone https://pagure.io/fedora-kickstarts.git

Modify the fedora-repo.ks. You’ll have to comment the rawhide repo and uncomment this line:

 %include fedora-repo-not-rawhide.ks

ksflatten

change directory into fedora-kickstarts and flatten a kickstart

<mock-chroot> sh-4.4# cd fedora-kickstarts
<mock-chroot> sh-4.4# ksflatten --config fedora-live-workstation.ks -oFedora-MyLiveCrypto.ks --version F27

You should see a warning about redundant “part /”, go edit the flat-fedora-live-workstation.ks and remove one of them. If you want to remove packages or group of packages, add stuff etc.. That’s where you’ll do it. For the first time I suggest you just go with the original kickstart file just to verify everything is working.

livemedia-creator

<mock-chroot> sh-4.4# livemedia-creator --ks Fedora-MyLiveCrypto.ks --no-virt --resultdir /var/lmc --project Fedora-work-mylivecrypto --make-iso --volid Fedora-mylivecrypto-27 --iso-only --iso-name Fedora-mylivecrypto-27-x86_64-1.iso --releasever 27 --title Fedora-MyLiveCrypto-live --macboot

<mock-chroot> sh-4.4# livemedia-creator --ks Fedora-MyLiveCrypto.ks --no-virt --resultdir /var/lmc --project Fedora-work-mylivecrypto --make-iso --volid Fedora-mylivecrypto-27 --iso-only --iso-name Fedora-mylivecrypto-27-x86_64-1.iso --releasever 27 --title Fedora-MyLiveCrypto-live --macboot
2018-03-05 21:02:02,319: livemedia-creator v27.11-1
2018-03-05 21:02:02,554: disk_img = /var/lmc/lmc-disk-_zch_o2a.img
2018-03-05 21:02:02,555: Using disk size of 6658MiB
X2018-03-05 21:02:06,314: Running anaconda.
2018-03-05 21:02:07,567: 
2018-03-05 21:02:07,568: ** (process:1703): WARNING **: Kernel module 'btrfs' not available
2018-03-05 21:02:07,570: 
2018-03-05 21:02:07,571: ** (process:1703): WARNING **: Cannot load the BTRFS plugin
2018-03-05 21:02:10,302: Starting installer, one moment...
2018-03-05 21:02:10,304: terminal size detection failed, using default width
2018-03-05 21:02:10,304: anaconda 27.20.4-1 for Fedora-work-mylivecrypto 27 (pre-release) started.
2018-03-05 21:02:10,324: Traceback (most recent call last):
2018-03-05 21:02:10,325: File "/usr/sbin/anaconda", line 603, in <module>
2018-03-05 21:02:10,325: display.setup_display(anaconda, opts, addon_paths=addon_paths)
2018-03-05 21:02:10,326: File "/usr/lib64/python3.6/site-packages/pyanaconda/display.py", line 258, in setup_display
2018-03-05 21:02:10,327: vnc_can_be_started, vnc_error_messages = check_vnc_can_be_started(anaconda)
2018-03-05 21:02:10,328: File "/usr/lib64/python3.6/site-packages/pyanaconda/display.py", line 120, in check_vnc_can_be_started
2018-03-05 21:02:10,328: if not nm_is_connecting() and not nm_is_connected():
2018-03-05 21:02:10,329: File "/usr/lib64/python3.6/site-packages/pyanaconda/nm.py", line 173, in nm_is_connecting
2018-03-05 21:02:10,330: return nm_state() == NM.State.CONNECTING
2018-03-05 21:02:10,330: File "/usr/lib64/python3.6/site-packages/pyanaconda/nm.py", line 149, in nm_state
2018-03-05 21:02:10,331: return NM.State.CONNECTED_GLOBAL
2018-03-05 21:02:10,331: AttributeError: type object 'State' has no attribute 'CONNECTED_GLOBAL'
2018-03-05 21:02:10,468: Running anaconda failed: process '['anaconda', '--kickstart', '/fedora-kickstarts/Fedora-MyLiveCrypto.ks', '--cmdline', '--dirinstall', '--remotelog', '127.0.0.1:54649']' exited with status 1
2018-03-05 21:03:08,338: Install failed: novirt_install failed
2018-03-05 21:03:08,346: Removing bad disk image
2018-03-05 21:03:08,360: ERROR: Image creation failed: novirt_install failed
<mock-chroot> sh-4.4# livemedia-creator --ks Fedora-MyLiveCrypto.ks --no-virt --resultdir /var/lmc --project Fedora-work-mylivecrypto --make-iso --volid Fedora-mylivecrypto-27 --iso-only --iso-name Fedora-mylivecrypto-27-x86_64-1.iso --releasever 27 --title Fedora-MyLiveCrypto-live --macboot
2018-03-05 22:16:30,299: livemedia-creator v27.11-1
2018-03-05 22:16:30,300: The results_dir (/var/lmc) should not exist, please delete or move its contents
<mock-chroot> sh-4.4# rm -rf /var/lmc/
<mock-chroot> sh-4.4# livemedia-creator --ks Fedora-MyLiveCrypto.ks --no-virt --resultdir /var/lmc --project Fedora-work-mylivecrypto --make-iso --volid Fedora-mylivecrypto-27 --iso-only --iso-name Fedora-mylivecrypto-27-x86_64-1.iso --releasever 27 --title Fedora-MyLiveCrypto-live --macboot
2018-03-05 22:16:34,188: livemedia-creator v27.11-1
2018-03-05 22:16:34,250: disk_img = /var/lmc/lmc-disk-d6h69eot.img
2018-03-05 22:16:34,251: Using disk size of 6658MiB
2018-03-05 22:16:37,432: Running anaconda.
2018-03-05 22:16:37,754: 
2018-03-05 22:16:37,754: ** (process:1825): WARNING **: Kernel module 'btrfs' not available
2018-03-05 22:16:37,755: 
2018-03-05 22:16:37,755: ** (process:1825): WARNING **: Cannot load the BTRFS plugin
2018-03-05 22:16:38,869: Starting installer, one moment...
2018-03-05 22:16:38,870: terminal size detection failed, using default width
2018-03-05 22:16:38,870: anaconda 27.20.4-1 for Fedora-work-mylivecrypto 27 (pre-release) started.
2018-03-05 22:16:38,870: 22:16:38 Not asking for VNC because of an automated install
2018-03-05 22:16:38,871: 22:16:38 Not asking for VNC because of an automated install
2018-03-05 22:16:38,871: 22:16:38 Not asking for VNC because we don't have Xvnc
2018-03-05 22:16:38,874: 22:16:38 Not asking for VNC because we don't have Xvnc
2018-03-05 22:16:39,630: Processing logs from ('127.0.0.1', 39458)
2018-03-05 22:18:08,849: Starting automated install.......................................................................................
2018-03-05 22:18:08,850: ================================================================================
2018-03-05 22:18:08,851: ================================================================================
2018-03-05 22:18:08,851: Installation
2018-03-05 22:18:08,852: 
2018-03-05 22:18:08,853: 1) [x] Language settings 2) [x] Time settings
2018-03-05 22:18:08,854: (English (United States)) (US/Eastern timezone)
2018-03-05 22:18:08,854: 3) [x] Installation source 4) [x] Software selection
2018-03-05 22:18:08,855: (https://mirrors.fedoraproject.o (Custom software selected)
2018-03-05 22:18:08,856: rg/mirrorlist?repo=fedora-$relea
2018-03-05 22:18:08,856: sever&arch=$basearch)
2018-03-05 22:18:08,857: 5) [x] Network configuration 6) [ ] User creation
2018-03-05 22:18:08,857: (No network devices available) (No user will be created)
2018-03-05 22:18:08,858: 
2018-03-05 22:18:08,858: ================================================================================
2018-03-05 22:18:08,859: ================================================================================
2018-03-05 22:18:08,860: Progress
2018-03-05 22:18:08,861: 
2018-03-05 22:18:08,864: Setting up the installation environment
2018-03-05 22:18:09,545: .
2018-03-05 22:18:09,545: Configuring storage
2018-03-05 22:18:09,547: .
2018-03-05 22:18:09,547: Running pre-installation scripts
2018-03-05 22:18:09,772: .
2018-03-05 22:18:09,773: Running pre-installation tasks
2018-03-05 22:23:03,040: .
2018-03-05 22:23:03,040: Installing.
2018-03-05 22:23:03,041: Starting package installation process
2018-03-05 22:23:03,041: Downloading packages
2018-03-05 22:23:03,042: Downloading 1686 RPMs, 0 B / 1.48 GiB (0%) done.
2018-03-05 22:23:03,042: Downloading 1686 RPMs, 5.52 MiB / 1.48 GiB (0%) done.
2018-03-05 22:23:03,043: Downloading 1686 RPMs, 11.56 MiB / 1.48 GiB (0%) done.
2018-03-05 22:23:03,043: Downloading 1686 RPMs, 17.84 MiB / 1.48 GiB (1%) done.
2018-03-05 22:23:03,044: Downloading 1686 RPMs, 23.42 MiB / 1.48 GiB (1%) done.
2018-03-05 22:23:03,044: Downloading 1686 RPMs, 29.77 MiB / 1.48 GiB (1%) done.
[...]
2018-03-05 15:51:31,853: Verifying hunspell-en-GB.noarch (1558/1559)
2018-03-05 15:51:31,853: Verifying perl-libnet.noarch (1559/1559)
2018-03-05 15:51:31,854: .
2018-03-05 15:51:31,854: Configuring storage
2018-03-05 15:51:31,855: .
2018-03-05 15:51:31,855: Performing post-installation setup tasks
2018-03-05 15:51:36,506: .
2018-03-05 15:51:36,507: 
2018-03-05 15:51:36,507: Configuring installed system
2018-03-05 15:51:38,665: .
2018-03-05 15:51:38,667: Creating users
2018-03-05 15:51:38,669: .
2018-03-05 15:51:38,670: Configuring addons
2018-03-05 15:52:04,568: .
2018-03-05 15:52:04,569: Generating initramfs
2018-03-05 15:53:15,788: .
2018-03-05 15:53:15,789: Running post-installation scripts
2018-03-05 15:53:15,792: .
2018-03-05 15:53:15,793: Storing configuration files and kickstarts
2018-03-05 15:53:15,801: .
2018-03-05 15:55:49,196: Shutting down log processing
2018-03-05 15:55:52,559: Disk Image install successful
2018-03-05 15:55:52,561: working dir is /var/tmp/lmc-work-_4z0sq47
2018-03-05 16:29:59,226: Rebuilding initrds
2018-03-05 16:29:59,227: dracut args = ['--xz', '--add', 'livenet dmsquash-live convertfs pollcdrom qemu qemu-net', '--omit', 'plymouth', '--no-hostonly', '--debug', '--no-early-microcode']
2018-03-05 16:29:59,229: rebuilding boot/initramfs-4.15.6-300.fc27.x86_64.img
2018-03-05 16:31:12,965: Building boot.iso
2018-03-05 16:31:13,084: running x86.tmpl
2018-03-05 16:31:53,990: Creating image file /var/tmp/lmc-work-_4z0sq47/images/product.img from contents of /var/tmp/lorax.imgutils.nzcr8i5_/usr/share/lorax//product/
2018-03-05 16:32:34,309: Disk image erased
2018-03-05 16:32:42,993: SUMMARY
2018-03-05 16:32:42,998: -------
2018-03-05 16:32:42,999: Logs are in /fedora-kickstarts
2018-03-05 16:32:42,999: Results are in /var/lmc
<mock-chroot> sh-4.4#

Get the iso and test it

You’ll find the iso in “/var/lib/mock/fedora-27-x86_64/root/var/lmc” just copy it somewhere else and test it using Virtualbox, kvm or qemu.

If you want to build a new iso you’ll have to delete the “/var/lmc” inside your mock, otherwise livemedia-creator won’t start.

 

Special thanks to Southern_Gentlem, dowdle and sfix for their help on Freenode #fedora and #fedora-respins

Sources:

https://fedoraproject.org/wiki/Livemedia-creator-_How_to_create_and_use_a_Live_CD

https://github.com/rhinstaller/pykickstart/blob/master/docs/kickstart-docs.rst

https://fedoraproject.org/wiki/Spins_Guidelines

Author: Arsenick

Hi all! I'm a 27 years old guy from Quebec city, Canada. I've been playing with Linux since 1998 and start to earn my life using Linux and FOSS around 2005. Since then I've earned few certification and courses including CLP10 (Certified Linux Professional from Novell), RHCE (RedHat Certified Engineer) and JBOSS Administration course. I'm a Linux sys admin and I'm working here in Quebec city for a small company who are RedHat Advanced partner since few years. So I'm trying to always keep me updated on new technology and new RedHat product. The best way I've found to do it is to use and contribute to the Fedora Community. So I've joined the community in mid 2009 as a Fedora Ambassadors, I still learning how everything work in a opensource community, but I really liked what I saw at the 2009 FUDCON in Toronto.

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