mirror of
https://github.com/AlmaLinux/ks2rootfs.git
synced 2024-11-21 09:13:09 +00:00
Adding dockerfile generation, some cleanup
Signed-off-by: Bala Raman <srbala@gmail.com>
This commit is contained in:
parent
3d66eab421
commit
d7ab737cc6
@ -16,18 +16,22 @@ docker build -t srbala/ks2rootfs:alma .
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Following command under `tests` folder. Run command uses the `kickstarts/almalinux-8-default.x86_64.ks` file to build.
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Use command below to create `default` docker files
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```sh
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docker run --rm --privileged -v "$PWD:/build:z" \
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-e BUILD_KICKSTART=kickstarts/almalinux-8-default.x86_64.ks \
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-e BUILD_ROOTFS=almalinux-8-default-docker.x86_64.tar.gz \
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-e BUILD_ROOTFS=almalinux-8-docker-default.x86_64.tar.gz \
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-e BUILD_OUTDIR=default \
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srbala/ks2rootfs:alma
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```
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Use command below to create `minimal` docker files
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```sh
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docker run --rm --privileged -v "$PWD:/build:z" \
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-e BUILD_KICKSTART=kickstarts/almalinux-8-minimal.x86_64.ks \
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-e BUILD_ROOTFS=almalinux-8-minimal-docker.x86_64.tar.gz \
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-e BUILD_ROOTFS=almalinux-8-docker-minimal.x86_64.tar.gz \
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-e BUILD_OUTDIR=minimal \
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srbala/ks2rootfs:alma
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```
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@ -1,7 +1,7 @@
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#!/bin/bash -e
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# description: build rootfs
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# description: CI/CD Utility helper. Builds linux rootfs file from kickstart input file in docker/podman enviroment
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# param: 1. kickstart file and 2. rootfs file name to be generated
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# license: MIT.
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usage() {
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cat 1>&2 <<EOF
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@ -149,3 +149,12 @@ if [ ${BUILD_FLAG_RETAIN_LOG} == 'true' ]; then
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else
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echo 'Skip copying logs data based on configuration (default). '
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fi
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cat << _EOF > "${BUILD_OUTDIR}/Dockerfile"
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# This file auto generated from 'ks2rootfs' script, any changes will be over-written
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FROM scratch
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ADD ${BUILD_ROOTFS} /
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CMD ["/bin/bash"]
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_EOF
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echo "Generating '${BUILD_OUTDIR}/Dockerfile' completed."
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143
tests/kickstarts/almalinux-8-minimal-alt.x86_64.ks
Normal file
143
tests/kickstarts/almalinux-8-minimal-alt.x86_64.ks
Normal file
@ -0,0 +1,143 @@
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# This is a minimal CentOS kickstart for containers.
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# It will not produce a bootable system
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# To use this kickstart, run the following command
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# livemedia-creator --make-tar --ks="centos8-minimal.ks" --image-name="centos8-minimal.tar.xz" --no-virt
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#
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# Based on:
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# https://github.com/CentOS/sig-cloud-instance-build/blob/master/docker/centos-8.ks
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# https://pagure.io/fedora-kickstarts/raw/master/f/fedora-container-base-minimal.ks
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# https://catalog.redhat.com/software/containers/detail/5c359a62bed8bd75a2c3fba8
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# Basic setup information
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# install
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url --url https://repo.almalinux.org/almalinux/8/BaseOS/x86_64/os/
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bootloader --disabled
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timezone --isUtc --nontp Etc/UTC
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rootpw --lock --iscrypted locked
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keyboard us
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network --bootproto=dhcp --device=link --activate
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reboot
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# Disk setup
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zerombr
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clearpart --all --initlabel
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autopart --noboot --nohome --noswap --nolvm --fstype=ext4
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# Package setup
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%packages --excludedocs --instLangs=en --nocore --excludeWeakdeps
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almalinux-release
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bash
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coreutils-single
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glibc-minimal-langpack
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libusbx
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microdnf
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rootfiles
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-dosfstools
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-e2fsprogs
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-fuse-libs
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-gnupg2-smime
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-kernel
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-libss
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-pinentry
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-qemu-guest-agent
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-shared-mime-info
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-trousers
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-xfsprogs
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-xkeyboard-config
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%end
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%addon com_redhat_kdump --disable
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%end
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%post --erroronfail --log=/root/anaconda-post.log
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# container customizations inside the chroot
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set -eux
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# Limit languages to help reduce size.
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LANG="en_US"
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echo "%_install_langs $LANG" > /etc/rpm/macros.image-language-conf
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echo "LANG=C.utf8" > /etc/locale.conf
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# generate build time file for compatibility with CentOS
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/bin/date +%Y%m%d_%H%M > /etc/BUILDTIME
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# set DNF infra variable to container for compatibility with CentOS
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echo 'container' > /etc/dnf/vars/infra
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# import AlmaLinux PGP key
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rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-AlmaLinux
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# Remove network configuration files leftover from anaconda installation
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# https://bugzilla.redhat.com/show_bug.cgi?id=1713089
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rm -f /etc/sysconfig/network-scripts/ifcfg-*
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# Remove machine-id on pre generated images
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rm -f /etc/machine-id
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touch /etc/machine-id
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%end
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%post --logfile /root/anaconda-post.log --erroronfail
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# remove some random help txt files
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rm -fv usr/share/gnupg/help*.txt
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# Pruning random things
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rm usr/lib/rpm/rpm.daily
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rm -rfv usr/lib64/nss/unsupported-tools/ # unsupported
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# Statically linked crap
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rm -fv usr/sbin/{glibc_post_upgrade.x86_64,sln}
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ln usr/bin/ln usr/sbin/sln
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# Remove some dnf info
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rm -rfv /var/lib/dnf
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# don't need icons
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rm -rfv /usr/share/icons/*
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#some random not-that-useful binaries
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rm -fv /usr/bin/pinky
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# we lose presets by removing /usr/lib/systemd but we do not care
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rm -rfv /usr/lib/systemd
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# if you want to change the timezone, bind-mount it from the host or reinstall tzdata
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rm -fv /etc/localtime
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mv /usr/share/zoneinfo/UTC /etc/localtime
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rm -rfv /usr/share/zoneinfo
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# Final pruning
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rm -rfv /var/cache/* /var/log/* /tmp/*
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# remove the original RHEL8 EULA
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# TODO: This affects the integrity of the installed rpm. Find a better way.
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rm -f /usr/share/redhat-release/EULA
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%end
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%post --nochroot --erroronfail --log=/mnt/sysimage/root/anaconda-post-nochroot.log
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set -eux
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# https://bugzilla.redhat.com/show_bug.cgi?id=1343138
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# Fix /run/lock breakage since it's not tmpfs in docker
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# This unmounts /run (tmpfs) and then recreates the files
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# in the /run directory on the root filesystem of the container
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# NOTE: run this in nochroot because "umount" does not exist in chroot
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umount /mnt/sysimage/run
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# The file that specifies the /run/lock tmpfile is
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# /usr/lib/tmpfiles.d/legacy.conf, which is part of the systemd
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# rpm that isn't included in this image. We'll create the /run/lock
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# file here manually with the settings from legacy.conf
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# NOTE: chroot to run "install" because it is not in anaconda env
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chroot /mnt/sysimage install -d /run/lock -m 0755 -o root -g root
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# workarount error /mnt/sysimage/run cannot be unmounted
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mount -t bind -o bind,defaults /run /mnt/sysimage/run
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# See: https://bugzilla.redhat.com/show_bug.cgi?id=1051816
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# NOTE: run this in nochroot because "find" does not exist in chroot
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KEEPLANG=en_US
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for dir in locale i18n; do
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find /mnt/sysimage/usr/share/${dir} -mindepth 1 -maxdepth 1 -type d -not \( -name "${KEEPLANG}" -o -name POSIX \) -exec rm -rfv {} +
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done
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%end
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@ -1,63 +1,67 @@
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# This is a minimal CentOS kickstart for containers.
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# It will not produce a bootable system
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# To use this kickstart, run the following command
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# livemedia-creator --make-tar --ks="centos8-minimal.ks" --image-name="centos8-minimal.tar.xz" --no-virt
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#
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# Based on:
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# https://github.com/CentOS/sig-cloud-instance-build/blob/master/docker/centos-8.ks
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# https://pagure.io/fedora-kickstarts/raw/master/f/fedora-container-base-minimal.ks
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# https://catalog.redhat.com/software/containers/detail/5c359a62bed8bd75a2c3fba8
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# AlmaLinux 8 kickstart file for x86_64 base Docker image
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# Basic setup information
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# install
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url --url https://repo.almalinux.org/almalinux/8/BaseOS/x86_64/os/
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bootloader --disabled
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timezone --isUtc --nontp Etc/UTC
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rootpw --lock --iscrypted locked
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keyboard us
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network --bootproto=dhcp --device=link --activate
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reboot
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# Disk setup
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lang en_US.UTF-8
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keyboard us
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timezone --nontp --utc UTC
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network --activate --bootproto=dhcp --device=link --onboot=on
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firewall --disabled
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selinux --disabled
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bootloader --disable
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zerombr
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clearpart --all --initlabel
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autopart --noboot --nohome --noswap --nolvm --fstype=ext4
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autopart --fstype=ext4 --type=plain --nohome --noboot --noswap
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# Package setup
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%packages --excludedocs --instLangs=en --nocore --excludeWeakdeps
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rootpw --iscrypted --lock almalinux
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shutdown
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%packages --ignoremissing --excludedocs --instLangs=en --nocore --excludeWeakdeps
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almalinux-release
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bash
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coreutils-single
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glibc-minimal-langpack
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libusbx
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microdnf
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rootfiles
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-dosfstools
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-e2fsprogs
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-fuse-libs
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-binutils
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-brotli
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-dnf
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-findutils
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-hostname
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-iputils
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-less
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-tar
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-vim-minimal
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-yum
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-crypto-policies-scripts
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-firewalld
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-diffutils
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-elfutils-debuginfod-client
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-gettext*
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-glibc-langpack-en
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-gnupg2-smime
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-grub\*
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-iptables
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-kernel
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-libss
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-libevent
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-openssl
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-os-prober
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-open-vm-tools
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-pinentry
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-qemu-guest-agent
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-platform-python-pip
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-shared-mime-info
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-trousers
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-xfsprogs
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-unbound-libs
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-xkeyboard-config
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-xz
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%end
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%addon com_redhat_kdump --disable
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%end
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%post --erroronfail --log=/root/anaconda-post.log
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# container customizations inside the chroot
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set -eux
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# Limit languages to help reduce size.
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LANG="en_US"
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echo "%_install_langs $LANG" > /etc/rpm/macros.image-language-conf
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echo "LANG=C.utf8" > /etc/locale.conf
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# generate build time file for compatibility with CentOS
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/bin/date +%Y%m%d_%H%M > /etc/BUILDTIME
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@ -67,77 +71,29 @@ echo 'container' > /etc/dnf/vars/infra
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# import AlmaLinux PGP key
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rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-AlmaLinux
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# Remove network configuration files leftover from anaconda installation
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# https://bugzilla.redhat.com/show_bug.cgi?id=1713089
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rm -f /etc/sysconfig/network-scripts/ifcfg-*
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# install only en_US.UTF-8 locale files, see
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# https://fedoraproject.org/wiki/Changes/Glibc_locale_subpackaging for details
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echo '%_install_langs en_US.UTF-8' > /etc/rpm/macros.image-language-conf
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# Remove machine-id on pre generated images
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rm -f /etc/machine-id
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touch /etc/machine-id
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%end
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%post --logfile /root/anaconda-post.log --erroronfail
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# remove some random help txt files
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rm -fv usr/share/gnupg/help*.txt
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# Pruning random things
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rm usr/lib/rpm/rpm.daily
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rm -rfv usr/lib64/nss/unsupported-tools/ # unsupported
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# Statically linked crap
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rm -fv usr/sbin/{glibc_post_upgrade.x86_64,sln}
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ln usr/bin/ln usr/sbin/sln
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# Remove some dnf info
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rm -rfv /var/lib/dnf
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# don't need icons
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rm -rfv /usr/share/icons/*
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#some random not-that-useful binaries
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rm -fv /usr/bin/pinky
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# we lose presets by removing /usr/lib/systemd but we do not care
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rm -rfv /usr/lib/systemd
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# if you want to change the timezone, bind-mount it from the host or reinstall tzdata
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rm -fv /etc/localtime
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mv /usr/share/zoneinfo/UTC /etc/localtime
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rm -rfv /usr/share/zoneinfo
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# Final pruning
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rm -rfv /var/cache/* /var/log/* /tmp/*
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# remove the original RHEL8 EULA
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# TODO: This affects the integrity of the installed rpm. Find a better way.
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rm -f /usr/share/redhat-release/EULA
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%end
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%post --nochroot --erroronfail --log=/mnt/sysimage/root/anaconda-post-nochroot.log
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set -eux
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# https://bugzilla.redhat.com/show_bug.cgi?id=1343138
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# Fix /run/lock breakage since it's not tmpfs in docker
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# This unmounts /run (tmpfs) and then recreates the files
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# in the /run directory on the root filesystem of the container
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# NOTE: run this in nochroot because "umount" does not exist in chroot
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umount /mnt/sysimage/run
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# The file that specifies the /run/lock tmpfile is
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# /usr/lib/tmpfiles.d/legacy.conf, which is part of the systemd
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# rpm that isn't included in this image. We'll create the /run/lock
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# file here manually with the settings from legacy.conf
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# NOTE: chroot to run "install" because it is not in anaconda env
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chroot /mnt/sysimage install -d /run/lock -m 0755 -o root -g root
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# workarount error /mnt/sysimage/run cannot be unmounted
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mount -t bind -o bind,defaults /run /mnt/sysimage/run
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# See: https://bugzilla.redhat.com/show_bug.cgi?id=1051816
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# NOTE: run this in nochroot because "find" does not exist in chroot
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KEEPLANG=en_US
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for dir in locale i18n; do
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find /mnt/sysimage/usr/share/${dir} -mindepth 1 -maxdepth 1 -type d -not \( -name "${KEEPLANG}" -o -name POSIX \) -exec rm -rfv {} +
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done
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# force each container to have a unique machine-id
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> /etc/machine-id
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# create tmp directories because there is no tmpfs support in Docker
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umount /run
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systemd-tmpfiles --create --boot
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# disable login prompt and mounts
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systemctl mask console-getty.service \
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dev-hugepages.mount \
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getty.target \
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systemd-logind.service \
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sys-fs-fuse-connections.mount \
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systemd-remount-fs.service
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# remove unnecessary files
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rm -f /var/lib/dnf/history.* \
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/run/nologin
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rm -fr /var/log/* \
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/tmp/* /tmp/.* \
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/boot || true
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%end
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