lorax/docs/man/lorax.1

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.TH "LORAX" "1" "Nov 29, 2016" "26.2" "Lorax"
.SH NAME
lorax \- Lorax Documentation
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.INDENT 0.0
.TP
.B Authors
Brian C. Lane <\fI\%bcl@redhat.com\fP>
.UNINDENT
.sp
"I am the Lorax.  I speak for the trees [and images]."
.sp
The \fI\%lorax\fP tool is used to create the
\fI\%Anaconda\fP installer boot.iso as
well as the basic release tree, and .treeinfo metadata file. Its dependencies
are fairly light\-weight because it needs to be able to run in a mock chroot
environment. It is best to run lorax from the same release as is being targeted
because the templates may have release specific logic in them. eg. Use the
rawhide version to build the boot.iso for rawhide, along with the rawhide
repositories.
.SH LORAX CMDLINE ARGUMENTS
.sp
Create the Anaconda boot.iso

.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
usage: lorax [\-h] \-p PRODUCT \-v VERSION \-r RELEASE [\-s REPOSITORY]
             [\-\-repo REPOSITORY] [\-m REPOSITORY] [\-t VARIANT] [\-b URL]
             [\-\-isfinal] [\-c CONFIGFILE] [\-\-proxy HOST] [\-i PACKAGE]
             [\-e PACKAGE] [\-\-buildarch ARCH] [\-\-volid VOLID] [\-\-macboot]
             [\-\-nomacboot] [\-\-noupgrade] [\-\-logfile LOGFILE] [\-\-tmp TMP]
             [\-\-cachedir CACHEDIR] [\-\-workdir WORKDIR] [\-\-force]
             [\-\-add\-template ADD_TEMPLATES]
             [\-\-add\-template\-var ADD_TEMPLATE_VARS]
             [\-\-add\-arch\-template ADD_ARCH_TEMPLATES]
             [\-\-add\-arch\-template\-var ADD_ARCH_TEMPLATE_VARS] [\-\-noverify]
             [\-\-sharedir SHAREDIR] [\-\-enablerepo [repo]]
             [\-\-disablerepo [repo]] [\-\-rootfs\-size ROOTFS_SIZE] [\-V]
             OUTPUTDIR
.ft P
.fi
.UNINDENT
.UNINDENT
.INDENT 0.0
.TP
.B Positional arguments:
.INDENT 7.0
.TP
.Boutputdir
Output directory
.UNINDENT
.TP
.B Options:
.INDENT 7.0
.TP
.B \-p\fP,\fB  \-\-product
product name
.TP
.B \-v\fP,\fB  \-\-version
version identifier
.TP
.B \-r\fP,\fB  \-\-release
release information
.TP
.B \-s=[]\fP,\fB  \-\-source=[]
source repository (may be listed multiple times)
.TP
.B \-\-repo=[]
source dnf repository file
.TP
.B \-m=[]\fP,\fB  \-\-mirrorlist=[]
mirrorlist repository (may be listed multiple times)
.TP
.B \-t\fP,\fB  \-\-variant
variant name
.TP
.B \-b=your distribution provided bug reporting tool\fP,\fB  \-\-bugurl=your distribution provided bug reporting tool
bug reporting URL for the product
.TP
.B \-\-isfinal=False
Undocumented
.TP
.B \-c=/etc/lorax/lorax.conf\fP,\fB  \-\-config=/etc/lorax/lorax.conf
config file
.TP
.B \-\-proxy
repo proxy url:port
.TP
.B \-i=[]\fP,\fB  \-\-installpkgs=[]
package glob to install before runtime\-install.tmpl runs. (may be listed multiple times)
.TP
.B \-e=[]\fP,\fB  \-\-excludepkgs=[]
package glob to remove before runtime\-install.tmpl runs. (may be listed multiple times)
.TP
.B \-\-buildarch
build architecture
.TP
.B \-\-volid
volume id
.TP
.B \-\-macboot=True
Undocumented
.TP
.B \-\-nomacboot=True
Undocumented
.TP
.B \-\-noupgrade=True
Undocumented
.TP
.B \-\-logfile=./lorax.log
Path to logfile
.TP
.B \-\-tmp=/var/tmp
Top level temporary directory
.TP
.B \-\-cachedir
DNF cache directory. Default is a temporary dir.
.TP
.B \-\-workdir
Work directory, overrides \-\-tmp. Default is a temporary dir under /var/tmp
.TP
.B \-\-force=False
Run even when the destination directory exists
.TP
.B \-\-add\-template=[]
Additional template for runtime image
.TP
.B \-\-add\-template\-var=[]
Set variable for runtime image template
.TP
.B \-\-add\-arch\-template=[]
Additional template for architecture\-specific image
.TP
.B \-\-add\-arch\-template\-var=[]
Set variable for architecture\-specific image
.TP
.B \-\-noverify=True
Do not verify the install root
.TP
.B \-\-sharedir
Directory containing all the templates. Overrides config file sharedir
.TP
.B \-\-enablerepo=[]
Names of repos to enable
.TP
.B \-\-disablerepo=[]
Names of repos to disable
.TP
.B \-\-rootfs\-size=2
Size of root filesystem in GiB. Defaults to 2.
.TP
.B \-V
show program\(aqs version number and exit
.UNINDENT
.UNINDENT
.SH QUICKSTART
.sp
Run this as root to create a boot.iso in \fB\&./results/\fP:
.INDENT 0.0
.INDENT 3.5
.sp
.nf
.ft C
dnf install lorax
setenforce 0
lorax \-p Fedora \-v 23 \-r 23 \e
\-s http://dl.fedoraproject.org/pub/fedora/linux/releases/23/Everything/x86_64/os/ \e
\-s http://dl.fedoraproject.org/pub/fedora/linux/updates/23/x86_64/ \e
\&./results/
setenforce 1
.ft P
.fi
.UNINDENT
.UNINDENT
.sp
You can add your own repos with \fB\-s\fP and packages with higher NVRs will
override the ones in the distribution repositories.
.sp
Under \fB\&./results/\fP will be the release tree files: .discinfo, .treeinfo, everything that
goes onto the boot.iso, the pxeboot directory, and the boot.iso under \fB\&./images/\fP\&.
.SH HOW IT WORKS
.sp
Lorax uses \fI\%dnf\fP to install
packages into a temporary directory, sets up configuration files, it then
removes unneeded files to save space, and creates a squashfs filesystem of the
files.  The iso is then built using a generic initramfs and the kernel from the
selected repositories.
.sp
To drive these processes Lorax uses a custom template system, based on \fI\%Mako
templates\fP with the addition of custom
commands (documented in \fBpylorax.ltmpl.LoraxTemplateRunner\fP). Mako
supports \fB%if/%endif\fP blocks as well as free\-form python code inside \fB<%
%>\fP tags and variable substitution with \fB${}\fP\&. The default templates are
shipped with lorax in \fB/usr/share/lorax/templates.d/99\-generic/\fP and use the
\fB\&.tmpl\fP extension.
.SS runtime\-install.tmpl
.sp
The \fBruntime\-install.tmpl\fP template lists packages to be installed using the
\fBinstallpkg\fP command.  This template is fairly simple, installing common packages and
architecture specific packages. It must end with the \fBrun_pkg_transaction\fP
command which tells dnf to download and install the packages.
.SS runtime\-postinstall.tmpl
.sp
The \fBruntime\-postinstall.tmpl\fP template is where the system configuration
happens. The installer environment is similar to a normal running system, but
needs some special handling. Configuration files are setup, systemd is told to
start the anaconda.target instead of a default system target, and a number of
unneeded services are disabled, some of which can interfere with the
installation. A number of template commands are used here:
.INDENT 0.0
.IP \(bu 2
\fBappend\fP to add text to a file.
.IP \(bu 2
\fBchmod\fP changes the file\(aqs mode.
.IP \(bu 2
\fBgconfset\fP runs gconfset.
.IP \(bu 2
\fBinstall\fP to install a file into the installroot.
.IP \(bu 2
\fBmkdir\fP makes a new directory.
.IP \(bu 2
\fBmove\fP to move a file into the installroot
.IP \(bu 2
\fBreplace\fP does text substitution in a file
.IP \(bu 2
\fBremove\fP deletes a file
.IP \(bu 2
\fBruncmd\fP run arbitrary commands.
.IP \(bu 2
\fBsymlink\fP creates a symlink
.IP \(bu 2
\fBsystemctl\fP runs systemctl in the installroot
.UNINDENT
.SS runtime\-cleanup.tmpl
.sp
The \fBruntime\-cleanup.tmpl\fP template is used to remove files that aren\(aqt strictly needed
by the installation environment. In addition to the \fBremove\fP template command it uses:
.INDENT 0.0
.IP \(bu 2
\fBremovepkg\fP
remove all of a specific package\(aqs contents. A package may be pulled in as a dependency, but
not really used. eg. sound support.
.IP \(bu 2
\fBremovefrom\fP
Removes some files from a package. A file glob can be used, or the \-\-allbut option to
remove everything except a select few.
.IP \(bu 2
\fBremovekmod\fP
Removes kernel modules
.UNINDENT
.SS The squashfs filesystem
.sp
After \fBruntime\-*.tmpl\fP templates have finished their work lorax creates an
empty ext4 filesystem, copies the remaining files to it, and makes a squashfs
filesystem of it. This file is the / of the boot.iso\(aqs installer environment
and is what is in the LiveOS/squashfs.img file on the iso.
.SS iso creation
.sp
The iso creation is handled by another set of templates. The one used depends
on the architecture that the iso is being created for. They are also stored in
\fB/usr/share/lorax/templates.d/99\-generic\fP and are named after the arch, like
\fBx86.tmpl\fP and \fBaarch64.tmpl\fP\&. They handle creation of the tree, copying
configuration template files, configuration variable substitution, treeinfo
metadata (via the \fBtreeinfo\fP
template command). Kernel and initrd are copied from the installroot to their
final locations and then mkisofs is run to create the boot.iso
.SH CUSTOM TEMPLATES
.sp
The default set of templates and configuration files from the lorax\-generic\-templates package
are shipped in the \fB/usr/share/lorax/templates.d/99\-generic/\fP directory. You can
make a copy of them and place them into another directory under \fBtemplates.d\fP
and they will be used instead if their sort order is below all other directories. This
allows multiple packages to ship lorax templates without conflict. You can (and probably
should) select the specific template directory by passing \fB\-\-sharedir\fP to lorax.
.SH AUTHOR
Anaconda Team
.SH COPYRIGHT
2015, Red Hat, Inc.
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