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image-minimizer

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Authors
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Brian C. Lane <bcl@redhat.com>

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image-minimizer is a script used as an interpreter for kickstart %post +sections. It is used to remove rpm packages and individual files from the +system that Anaconda has just installed.

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It processes a list of commands that tell it which files or rpms to remove, and +which to keep.

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image-minimizer cmdline arguments

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usage: image-minimizer [-h] [-i STRING] [--dryrun] [-v] STRING

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Optional arguments

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-h, --help
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show this help message and exit

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-i STRING, --installroot STRING
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Root path to prepend to all file patterns and +installation root for RPM operations. Defaults to +INSTALL_ROOT or /mnt/sysimage/

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--dryrun
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If set, no filesystem changes are made.

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-v, --verbose
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Display every action as it is performed.

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Positional arguments

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STRING
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Filename to process

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NOTES

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You cannot pass any arguments to image-minimizer when using it from the +kickstart %post.

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When using this from a kickstart the image-minimizer package needs to be available. +It is not included on the standard boot.iso, so you will need to include lorax in +the %package section. You can use image-minimizer to remove lorax from the install.

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If you are using this with livemedia-creator it can be installed on the host +system so that lorax isn't needed in the %package list, and it doesn't need +to be removed.

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commands

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Commands are listed one per line, followed by a space, and then by the +package, file, or glob. The globs used are Unix style pathname patterns using +*, ?, and [] character ranges. globbing is implemented using the python +glob module.

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  • drop <PATTERN> +This will remove files from the installation.

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  • keep <PATTERN> +This will keep files, and should follow any drop commands including globs.

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  • droprpm <PATTERN> +Remove matching rpm packages. Dependencies are not remove, just individual +packages matching the glob.

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  • keeprpm <PATTERN> +Do not remove matching rpm packages, it should follow any droprpm commands +that include globs.

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example

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Example Anaconda %post usage:

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%post --interpreter=image-minimizer --nochroot
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+drop /lib/modules/*/kernel/fs
+keep /lib/modules/*/kernel/fs/ext*
+keep /lib/modules/*/kernel/fs/mbcache*
+keep /lib/modules/*/kernel/fs/squashfs
+
+droprpm make
+droprpm mtools
+droprpm mysql-libs
+droprpm perl
+droprpm perl-Pod-*
+droprpm syslinux
+keeprpm perl-Pod-Simple
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+# Not needed after image-minimizer is done
+droprpm lorax
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+%end
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