Signed-off-by: Bala Raman <srbala@gmail.com>
This commit is contained in:
parent
18d0fdad4c
commit
5587ba7a77
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@ -1,7 +1,11 @@
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# ----------------------------------------------------------------------------
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# Multi stage build, using Micro version AlmaLinux as foundation for end image
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# Final image designed for specific purposes, don't have dnf, microdnf or yum
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# ----------------------------------------------------------------------------
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FROM almalinux:8 as builder
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RUN mkdir -p /mnt/system-root /mnt/system-root/build; \
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dnf install --installroot /mnt/system-root --releasever 8 --setopt=install_weak_deps=false --setopt=tsflags=nodocs -y coreutils-single \
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dnf install --installroot /mnt/system-root --releasever 8 --setopt=install_weak_deps=False --setopt=tsflags=nodocs -y coreutils-single \
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bash \
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glibc-minimal-langpack \
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anaconda-tui \
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@ -9,6 +13,7 @@ RUN mkdir -p /mnt/system-root /mnt/system-root/build; \
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jq \
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tar \
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policycoreutils \
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# Optional include to avoid runtime warning -- starts
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libblockdev-mdraid \
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libblockdev-crypto \
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libblockdev-lvm \
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@ -17,11 +22,13 @@ RUN mkdir -p /mnt/system-root /mnt/system-root/build; \
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libblockdev-loop \
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libblockdev-nvdimm \
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libblockdev-mpath \
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# Optional include to avoid runtime warning -- ends
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rootfiles; \
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rm -rf /mnt/system-root/var/cache/* ; \
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dnf clean all; \
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cp /etc/yum.repos.d/* /mnt/system-root/etc/yum.repos.d/ ; \
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rm -rf /var/cache/yum; \
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# TODO: commands below move to side script or remove?
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# generate build time file for compatibility with CentOS
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/bin/date +%Y%m%d_%H%M > /mnt/system-root/etc/BUILDTIME ;\
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# set DNF infra variable to container for compatibility with CentOS
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30
README.md
30
README.md
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@ -5,8 +5,10 @@ This project provides the ability build `rootfs` file from `kickstart` input fil
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## HOW-TO
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Image yet ot published in `hub.docker.com`, until then use local build.
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### Building local
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```
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```sh
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docker build -t srbala/ks2rootfs .
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```
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@ -14,9 +16,33 @@ docker build -t srbala/ks2rootfs .
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Following command uses the `kickstarts/almalinux-8-default.x86_64.ks` file to build.
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```
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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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srbala/ks2rootfs
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```
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### Environment variables
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Container startup script `ks2rootfs` supports multiple environment varible to customize the output. The environment variables and their use as follows
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```sh
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ENVIRONMENT VARIABLES:
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======================
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BUILD_KICKSTART : Input kickstart source file (.ks) - Required
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BUILD_ROOTFS : Rootfs output file name - Required
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BUILD_WORK_DIR : Working dir for kickstart source and image destination (default current directory) - Optional
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BUILD_OUTDIR : Output directory name in working dir - Optional
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BUILD_FLAG_OUTOUT_IN_PWD : Set this flag to true to write output files in current working directory. Default value is 'false'. When value is set to 'true', any value passed to 'BUILD_OUTDIR' will be ignored.
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BUILD_FLAG_WRITE_META : Generate meta data about the kickstart build system - Optional
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BUILD_FLAG_RETAIN_LOG : Retain generated output log files under 'logs' output directory - Optional
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USAGE:
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ks2rootfs KICKSTART_FILE_NAME ROOTFS_FILE_NAME
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EXAMPLES:
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ks2rootfs os-minimal.ks os-minimal.tar.xz
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```
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@ -5,28 +5,83 @@
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usage() {
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cat 1>&2 <<EOF
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Script to create roofs from kickstart file using livemedia-creator
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Script to create roofs file from a kickstart file using livemedia-creator
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ENVIRONMENT VARS:
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BUILD_WORK_DIR Working dir for kickstart source and image destination (default current directory)
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BUILD_KICKSTART Input kickstart source file (.ks)
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BUILD_ROOTFS Rootfs output file name
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ENVIRONMENT VARIABLES:
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======================
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BUILD_KICKSTART : Input kickstart source file (.ks) - Required
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BUILD_ROOTFS : Rootfs output file name - Required
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BUILD_WORK_DIR : Working dir for kickstart source and image destination (default current directory) - Optional
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BUILD_OUTDIR : Output directory name in working dir - Optional
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BUILD_FLAG_OUTOUT_IN_PWD : Set this flag to true to write output files in current working directory. Default value is false. When value is set to `true`, any value passed to `BUILD_OUTDIR` will be ignored.
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BUILD_FLAG_WRITE_META : Generate meta data about the kickstart build system - Optional
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BUILD_FLAG_RETAIN_LOG : Retain generated output log files under 'logs' output directory - Optional
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USAGE:
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ks2rootfs KICKSTART_FILE_NAME ROOTFS_FILE_NAME
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EXAMPLES:
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ks2rootfs centos8-minimal.ks centos8-minimal.tar.xz
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ks2rootfs os-minimal.ks os-minimal.tar.xz
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EOF
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}
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run-summary() {
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cat 1>&2 <<EOF
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ks2rootfs - Script input summary:
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FLAGS
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-----
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FLAG_OUTOUT_PWD : ${BUILD_FLAG_OUTOUT_IN_PWD}
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FLAG_WRITE_META : ${BUILD_FLAG_WRITE_META}
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FLAG_RETAIN_LOG : ${BUILD_FLAG_RETAIN_LOG}
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VARIABLES
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---------
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BUILD_WORK_DIR : ${BUILD_WORK_DIR}
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BUILD_OUTDIR : ${BUILD_OUTDIR}
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BUILD_LOGDIR : ${BUILD_LOGDIR}
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INPUT_KICKSTART : ${BUILD_WORK_DIR}${BUILD_KICKSTART}
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OUTPUT_ROOTFS : ${BUILD_OUTDIR}/${BUILD_ROOTFS}
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EOF
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}
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BUILD_WORK_DIR=${BUILD_WORK_DIR:-./}
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BUILD_KICKSTART=${BUILD_KICKSTART:-$1}
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BUILD_ROOTFS=${BUILD_ROOTFS:-$2}
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BUILD_OUTDIR=${BUILD_OUTDIR:-./result}
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BUILD_WRITE_META=${BUILD_WRITE_META:-true}
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BUILD_RETAIN_LOG=${BUILD_RETAIN_LOG:-false}
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BUILD_FLAG_WRITE_META=${BUILD_FLAG_WRITE_META:-true}
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BUILD_FLAG_RETAIN_LOG=${BUILD_FLAG_RETAIN_LOG:-false}
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BUILD_FLAG_OUTOUT_IN_PWD=${BUILD_FLAG_OUTOUT_IN_PWD:-false}
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USE_PWD_OUTPUT=${USE_PWD_OUTPUT:-false}
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BUILD_OUTDIR=${BUILD_OUTDIR:-result}
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BUILD_LOGDIR=${BUILD_OUTDIR}/logs
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if [ ${BUILD_FLAG_OUTOUT_IN_PWD} == 'true' ]; then
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echo 'Build output files will be in current working folder ... '
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BUILD_OUTDIR=${BUILD_WORK_DIR}
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else
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BUILD_OUTDIR=${BUILD_WORK_DIR}${BUILD_OUTDIR:-result}
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echo "Build output files will be in '${BUILD_OUTDIR}' folder ... "
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if [[ -d "${BUILD_OUTDIR}" ]]; then
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echo "Output directory ${BUILD_OUTDIR} already exists, please remove it"
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exit 1
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fi
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mkdir -p ${BUILD_OUTDIR}
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if [[ -d "${BUILD_OUTDIR}" ]]; then
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echo "Output directory ${BUILD_OUTDIR} created successfully"
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else
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echo "Error in creating output directory: ${BUILD_OUTDIR}"
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exit 1
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fi
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fi
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BUILD_LOGDIR=${BUILD_OUTDIR}/logs
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if [ -z ${BUILD_KICKSTART} ] || [ -z ${BUILD_ROOTFS} ]
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then
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@ -35,6 +90,9 @@ then
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exit 1
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fi
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# Write run summary to console
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run-summary
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# set anaconda base product
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cat << _EOF > /etc/anaconda/product.d/ks2rootfs.conf
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# Anaconda configuration file for Kickstart to Rootfs.
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@ -53,25 +111,38 @@ eula =
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_EOF
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# create rootfs
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livemedia-creator --logfile="/tmp/rootfs-creator.log" \
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livemedia-creator --logfile="/tmp/ks2rootfs.log" \
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--make-tar --ks="${BUILD_WORK_DIR}/${BUILD_KICKSTART}" --no-virt \
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--image-only --image-name="${BUILD_ROOTFS}" \
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--anaconda-arg "--product Kickstart to Rootfs"
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# move rootfs to working dir
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cp -rp /var/tmp/${BUILD_ROOTFS} ${BUILD_WORK_DIR}/${BUILD_ROOTFS}
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# copy rootfs to working dir
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cp -rp /var/tmp/${BUILD_ROOTFS} ${BUILD_OUTDIR}/${BUILD_ROOTFS}
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# extract os-release info
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tar -xvf /var/tmp/${BUILD_ROOTFS} -C /tmp/ --strip-components=3 ./usr/lib/os-release
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os_release_id=$(awk -F= '$1=="ID" { print $2 ;}' /tmp/os-release | tr -d '"')
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distro_release=$(grep "${os_release_id}.*-release-" /tmp/anaconda/packaging.log | grep -o "Verifying:.*" | sed -n 's/Verifying: //p')
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if [ -z ${distro_release+x} ]; then
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exit 1
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if [ ${BUILD_FLAG_WRITE_META} == 'true' ]; then
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# extract os-release info
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tar -xvf /var/tmp/${BUILD_ROOTFS} -C /tmp/ --strip-components=3 ./usr/lib/os-release
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os_release_id=$(awk -F= '$1=="ID" { print $2 ;}' /tmp/os-release | tr -d '"')
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distro_release=$(grep "${os_release_id}.*-release-" /tmp/anaconda/packaging.log | grep -o "Verifying:.*" | sed -n 's/Verifying: //p')
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if [ -z ${distro_release+x} ]; then
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exit 1
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else
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echo 'Writting meta data ... '
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# save distro release info
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echo "$distro_release" > ${BUILD_OUTDIR}/distro-release
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fi
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# save list of packages installed
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jq .[] -r /tmp/dnf.cache/tempfiles.json | awk -F '/' '{print $5}' | sort > ${BUILD_OUTDIR}/pkgs-list
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else
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# save distro release info
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echo "$distro_release" > ${BUILD_WORK_DIR}/distro-release
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echo 'Skip writing meta data based on configuration.'
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fi
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# save list of packages installed
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jq .[] -r /tmp/dnf.cache/tempfiles.json | awk -F '/' '{print $5}' | sort > ${BUILD_WORK_DIR}/pkgs-list
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if [ ${BUILD_FLAG_RETAIN_LOG} == 'true' ]; then
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rm -rf ${BUILD_LOGDIR}
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mkdir -p ${BUILD_LOGDIR} ${BUILD_LOGDIR}/anaconda
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echo "Copying logs to '${BUILD_LOGDIR}'"
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cp /tmp/ks2rootfs.log rm -rf ${BUILD_LOGDIR}/ks2rootfs.log
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cp -rp /tmp/anaconda/* ${BUILD_LOGDIR}/anaconda
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else
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echo 'Skip writing logs data based on configuration (default). '
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fi
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@ -0,0 +1,99 @@
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# AlmaLinux 8 kickstart file for x86_64 base Docker image
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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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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 --fstype=ext4 --type=plain --nohome --noboot --noswap
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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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binutils
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coreutils-single
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dnf
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findutils
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glibc-minimal-langpack
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hostname
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iputils
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less
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rootfiles
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tar
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vim-minimal
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yum
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xz
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-brotli
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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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-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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-platform-python-pip
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-shared-mime-info
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-trousers
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-unbound-libs
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-xkeyboard-config
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%end
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%post --erroronfail --log=/root/anaconda-post.log
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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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# 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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# 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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