91da6ab885
This change permits the yum-minimal element to be used in downstream custom distributions, which may have additional packages containing repo config or GPG keys needed. This could also be utilized at a later time to move the distribution-specific logic in this method to each distribution element separately. Change-Id: Ic1434bb2fe7301086cf11ba6bd7f2ee187c5e6c8
369 lines
14 KiB
Bash
Executable File
369 lines
14 KiB
Bash
Executable File
#!/bin/bash
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#
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# Copyright 2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# dib-lint: disable=safe_sudo
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if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
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set -x
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fi
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set -eu
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set -o pipefail
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source $_LIB/common-functions
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if [ -f ${TARGET_ROOT}/.extra_settings ] ; then
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. ${TARGET_ROOT}/.extra_settings
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fi
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ARCH=${ARCH:-x86_64}
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if [ $ARCH = amd64 ]; then
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ARCH=x86_64
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fi
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# Calling elements will need to set DISTRO_NAME and DIB_RELEASE
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# TODO Maybe deal with DIB_DISTRIBUTION_MIRROR
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http_proxy=${http_proxy:-}
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YUM=${YUM:-yum}
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WORKING=$(mktemp --tmpdir=${TMP_DIR:-/tmp} -d)
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EACTION="rm -r $WORKING"
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trap "$EACTION" EXIT
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YUM_CACHE=$DIB_IMAGE_CACHE/yum
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mkdir -p $YUM_CACHE
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# Note, on Debian/Ubuntu, %_dbpath is set in the RPM macros as
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# ${HOME}/.rpmdb/ -- this makes sense as RPM isn't the system
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# packager. This path is relative to the "--root" argument
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_RPM="rpm --dbpath=/var/lib/rpm"
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# install the [fedora|centos]-[release|repo] packages inside the
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# chroot, which are needed to bootstrap yum/dnf
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#
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# note this runs outside the chroot, where we're assuming the platform
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# has yum/yumdownloader
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function _install_repos {
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local packages
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local rc
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# pre-install the base system packages via rpm. We previously
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# just left it up to yum to drag these in when we "yum install
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# yum" in the chroot in _install_pkg_manager. This raised a small
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# problem that inside the empty chroot yum went ahead and did a
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# mkdir for /var/run to put some pid file in, which then messed up
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# the "filesystem" package making /var/run a symlink to /run
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# ... which leads to odd issues with a running system.
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#
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# TODO: these packages still have some small %posttrans stuff that
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# depends on other packages (see rhbz#1306489) ... maybe the idea
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# is that they are only installed in one big transaction with the
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# rest of the system? but we don't want to use yum to do this
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# (see above) so ...
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packages="${DIB_YUM_MINIMAL_BOOTSTRAP_PACKAGES:-} "
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packages+="basesystem filesystem setup "
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if [[ ${DISTRO_NAME} = fedora && ${DIB_RELEASE} -gt 29 ]]; then
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packages+="fedora-release-cloud fedora-release-common "
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else
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packages+="${DISTRO_NAME}-release "
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fi
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# Starting in F21 this was split into a separate package
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if [[ ${DISTRO_NAME} == 'fedora' ]]; then
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packages+="fedora-repos "
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fi
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# F27 started putting gpg keys into this separate package
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if [[ ${DISTRO_NAME} = fedora && ${DIB_RELEASE} -gt 26 ]]; then
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packages+="fedora-gpg-keys "
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fi
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# CentOS 8.1 split repositories and GPG keys out into subpackages
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if [[ ${DISTRO_NAME} = centos && ${DIB_RELEASE} > "7" ]]; then
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packages+="centos-gpg-keys "
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if [[ "$DIB_RELEASE" =~ (stream) ]]; then
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packages+="centos-stream-release centos-stream-repos "
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else
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packages+="centos-linux-release centos-linux-repos "
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fi
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fi
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# By default, parent elements (fedora-minimal, centos-minimal)
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# have a yum.repos.d directory in the element with a default repo;
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# this is copied to TMP_HOOK_PATH by the usual hook-copying
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# routines. In the gate, environment.d files for the funtional
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# tests will set DIB_YUM_MINIMAL_BOOTSTRAP_REPOS -- this contains
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# mirrors correct for the region setup by contrib/setup-gate-mirrors.sh
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local repo=${DIB_YUM_MINIMAL_BOOTSTRAP_REPOS:-}
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if [[ -z ${repo} ]]; then
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# take in preference more specific subdirs
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if [[ -d ${TMP_HOOKS_PATH}/yum.repos.d/${DIB_RELEASE} ]]; then
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repo=${TMP_HOOKS_PATH}/yum.repos.d/${DIB_RELEASE}
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else
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repo=${TMP_HOOKS_PATH}/yum.repos.d
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fi
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fi
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# yumdownloader puts repo xml files and such into a directory
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# ${TMPDIR}/yum-$USER-random. Since we don't need this once the
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# initial download happens, redirect TMPDIR for this call so we
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# can clean it up nicely
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local temp_tmp
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temp_tmp=$(mktemp -d)
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TMPDIR=${temp_tmp} yumdownloader --verbose \
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--releasever=${DIB_RELEASE/-*/} \
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--setopt=reposdir=$repo \
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--setopt=cachedir=$temp_tmp \
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--destdir=$WORKING \
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${packages} && rc=$? || rc=$?
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rm -rf ${temp_tmp}
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if [[ ${rc} != 0 ]]; then
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die "Failed to download initial packages: ${packages}"
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fi
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# --nodeps works around these wanting /bin/sh in some fedora
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# releases, see rhbz#1265873
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sudo $_RPM --root $TARGET_ROOT --nodeps -ivh $WORKING/*rpm
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# install the bootstrap mirror repos over the default ones, if
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# set. we will remove this at the end so the final image has
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# regular mirrors
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if [[ -n ${DIB_YUM_MINIMAL_BOOTSTRAP_REPOS:-} ]]; then
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for repo in $TARGET_ROOT/etc/yum.repos.d/*.repo; do
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sudo mv $repo $repo.USING_MIRROR
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done
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sudo cp ${DIB_YUM_MINIMAL_BOOTSTRAP_REPOS}/* \
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$TARGET_ROOT/etc/yum.repos.d/
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fi
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if [[ -n ${DIB_YUM_MINIMAL_EXTRA_REPOS:-} ]]; then
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sudo cp ${DIB_YUM_MINIMAL_EXTRA_REPOS}/* \
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$TARGET_ROOT/etc/yum.repos.d/
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fi
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}
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# _install_pkg_manager packages...
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#
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# install the package manager packages. This is done outside the chroot
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# and with yum from the build system.
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# TODO: one day build systems will be dnf only, but we don't handle
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# that right now
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function _install_pkg_manager {
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# Install into the chroot, using the gpg keys from the release
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# rpm's installed in the chroot
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sudo sed -i "s,/etc/pki/rpm-gpg,$TARGET_ROOT/etc/pki/rpm-gpg,g" \
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$TARGET_ROOT/etc/yum.repos.d/*repo
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# See notes on $_RPM variable -- we need to override the
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# $HOME-based dbpath set on debian/ubuntu here. Unfortunately,
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# yum does not have a way to override rpm macros from the command
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# line. So we modify the user's ~/.rpmmacros to set %_dbpath back
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# to "/var/lib/rpm" (note, this is taken relative to the
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# --installroot).
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#
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# Also note, we only want this done around this call -- this is
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# the only place we are using yum outside the chroot, and hence
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# picking up the base-system's default rpm macros. For example,
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# the yumdownloader calls above in _install_repos want to use
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# ~/.rpmdb/ ... there is nothing in the build-system /var/lib/rpm!
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#
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# Another issue we hit is having to set --releasedir here. yum
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# determines $releasevar based on (more or less) "rpm -q
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# --whatprovides $distroverpkg". By default, this is
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# "redhat-release" (fedora-release provides redhat-release) but
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# some platforms like CentOS override it in /etc/yum.conf (to
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# centos-release in their case). You can't override this (see
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# [1]), but setting --releasever works around this.
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#
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# [1] https://bugzilla.redhat.com/show_bug.cgi?id=1287333
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(
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flock -w 1200 9 || die "Can not lock .rpmmacros"
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echo "%_dbpath /var/lib/rpm" >> $HOME/.rpmmacros
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local _lang_pack=""
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local _extra_pkgs=""
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if [[ $DISTRO_NAME == "fedora" ]] || \
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[[ $DISTRO_NAME == "centos" && $DIB_RELEASE > "7" ]]; then
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# glibc from F24 onwards has split locales into "langpack"
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# packages. Host yum doesn't understand the
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# weak-dependencies glibc now uses to get the
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# minimal-langpack and chooses a random(ish) one that
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# satisfies the locale dependency (rhbz#1349258).
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# Work-around this by explicitly requring the minimal and
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# english (for en_US.UTF-8) pack.
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_lang_pack="glibc-minimal-langpack glibc-langpack-en"
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fi
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# Yum has some issues choosing weak dependencies. It can end
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# up choosing "coreutils-single" instead of "coreutils" which
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# causes problems later when a package actually requires
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# coreutils. For more info see
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# https://bugzilla.redhat.com/show_bug.cgi?id=1286445
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# Really all we can do is pre-install the right thing
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_extra_pkgs+="coreutils "
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# Legacy yum reads vars from directory /etc/yum/vars and, unlike dnf,
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# does not provide setopt=varsdir. So, if $YUM is legacy yum and our
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# target root is dnf, symlink dnf vars.
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if [[ ! -d $TARGET_ROOT/etc/yum/vars ]]; then
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sudo mkdir -p $TARGET_ROOT/etc/yum
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sudo ln -s $TARGET_ROOT/etc/dnf/vars $TARGET_ROOT/etc/yum/vars
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fi
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sudo -E yum -y \
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--disableexcludes=all \
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--setopt=cachedir=$YUM_CACHE/$ARCH/$DIB_RELEASE \
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--setopt=reposdir=$TARGET_ROOT/etc/yum.repos.d \
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--releasever=${DIB_RELEASE/-*/} \
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--installroot $TARGET_ROOT \
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install $@ ${_lang_pack} ${_extra_pkgs} && rc=$? || rc=$?
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# we may have symlinked yum/vars -> dnf/vars, unset if so
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sudo unset $TARGET_ROOT/etc/yum/vars 2>/dev/null || true
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# Note we've modified the base system's .rpmmacros. Ensure we
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# clean it up *always*
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# sed makes it easy to remove last line, but not last n lines...
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sed -i '$ d' $HOME/.rpmmacros; sed -i '$ d' $HOME/.rpmmacros;
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if [ $rc != 0 ]; then
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die "Initial yum install to chroot failed! Can not continue."
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fi
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) 9>$DIB_LOCKFILES/.rpmmacros.dib.lock
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# Set gpg path back because subsequent actions will take place in
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# the chroot
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sudo sed -i "s,$TARGET_ROOT/etc/pki/rpm-gpg,/etc/pki/rpm-gpg,g" \
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$TARGET_ROOT/etc/yum.repos.d/*repo
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}
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# Note this is not usually done for root.d elements (see
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# lib/common-functions:mount_proc_dev_sys) but it's important that
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# we have things like /dev/urandom around inside the chroot for
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# the rpm [pre|post]inst scripts within the packages.
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sudo mkdir -p $TARGET_ROOT/proc $TARGET_ROOT/dev $TARGET_ROOT/sys
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sudo mount -t proc none $TARGET_ROOT/proc
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sudo mount --bind /dev $TARGET_ROOT/dev
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sudo mount -t devpts $(mount_dev_pts_options) devpts $TARGET_ROOT/dev/pts
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# Mounting /sys as RO indicates to various systemd things
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# that we are in a container
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sudo mount -o ro -t sysfs none $TARGET_ROOT/sys
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# initalize rpmdb
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sudo mkdir -p $TARGET_ROOT/var/lib/rpm
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sudo $_RPM --root $TARGET_ROOT --initdb
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# this makes sure that running yum/dnf in the chroot it can get
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# out to download stuff
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sudo mkdir $TARGET_ROOT/etc
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sudo cp /etc/resolv.conf $TARGET_ROOT/etc/resolv.conf
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# Bind mount the external yum cache inside the chroot. Same logic
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# as in the yum element to provide for yum caching copied here
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# because the sequencing is wrong otherwise
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sudo mkdir -p $TMP_MOUNT_PATH/tmp/yum
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sudo mount --bind $YUM_CACHE $TMP_MOUNT_PATH/tmp/yum
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_install_repos
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# Install package manager
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# We are somewhat fighting against the "yum" version on the host to
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# get things installed correctly. Fedora 27 onwards has a
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# "curl-minimal" package that will get pulled in by default for the
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# initial install (ianw: I think because the yum doesn't understand
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# weak dependencies correctly). This causes problems later if/when
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# "curl" gets installed (you need to add --allowerasing to let dnf get
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# rid of the old package). To avoid this, just install the full curl
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# and first up. On Centos, it's different again and we need to
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# specify libcurl as well, or the minimal libcurl packages come in
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# causing similar problems. *But* -- we can't also do that on Fedora
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# it seems, as it seems like as part of the Fedora modular updates
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# (https://docs.fedoraproject.org/en-US/modularity/) we can pick up
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# seemingly mismatched libraries.
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if [[ ${DISTRO_NAME} == 'fedora' ]]; then
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_install_pkg_manager dnf dnf-plugins-core curl
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elif [[ ${DISTRO_NAME} == centos && $DIB_RELEASE > "7" ]]; then
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_install_pkg_manager dnf dnf-plugins-core curl libcurl
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else
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_install_pkg_manager yum
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fi
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# sort of like run_in_target; but we're not in a phase where that
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# works yet. strip unnecessary external env vars that can cause
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# problems.
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function _run_chroot {
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local cmd="$@"
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sudo -E chroot $TARGET_ROOT env -u TMPDIR sh -c "$cmd"
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}
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# we just installed yum/dnf with "outside" tools (yum/rpm) which
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# might have created /var/lib/[yum|rpm] (etc) that are slighlty
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# incompatible. Refresh everything with the in-chroot tools
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_run_chroot rpm --rebuilddb
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_run_chroot ${YUM} clean all
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# populate the lang reduction macro in the chroot
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echo "%_install_langs C:en_US:en_US.UTF-8" | \
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sudo tee -a $TARGET_ROOT/etc/rpm/macros.langs > /dev/null
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_base_packages="systemd passwd findutils sudo util-linux-ng "
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# This package is split out from systemd on >F24, dracut is
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# missing the dependency and will fail to make an initrd without
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# it; see
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# https://bugzilla.redhat.com/show_bug.cgi?id=1398505
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_base_packages+="systemd-udev "
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# bootstrap the environment within the chroot; bring in new
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# metadata with an update and install some base packages we need.
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_run_chroot ${YUM} -y update
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_run_chroot ${YUM} -y \
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--setopt=cachedir=/tmp/yum/$ARCH/$DIB_RELEASE \
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install ${_base_packages}
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# Put in a dummy /etc/resolv.conf over the temporary one we used
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# to bootstrap. systemd has a bug/feature [1] that it will assume
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# you want systemd-networkd as the network manager and create a
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# broken symlink to /run/... if the base image doesn't have one.
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# This broken link confuses things like dhclient.
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# [1] https://bugzilla.redhat.com/show_bug.cgi?id=1197204
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echo -e "# This file intentionally left blank\n" | \
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sudo tee $TARGET_ROOT/etc/resolv.conf
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# set the most reliable UTF-8 locale
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echo -e 'LANG="en_US.UTF-8"' | \
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sudo tee $TARGET_ROOT/etc/locale.conf
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# default to UTC
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_run_chroot ln -sf /usr/share/zoneinfo/UTC \
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/etc/localtime
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# cleanup
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# TODO : move this into a exit trap; and reconsider how
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# this integrates with the global exit cleanup path.
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sudo umount $TMP_MOUNT_PATH/tmp/yum
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sudo umount $TARGET_ROOT/proc
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sudo umount $TARGET_ROOT/dev/pts
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sudo umount $TARGET_ROOT/dev
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sudo umount $TARGET_ROOT/sys
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# RPM doesn't know whether files have been changed since install
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# At this point though, we know for certain that we have changed no
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# config files, so anything marked .rpmnew is just a bug.
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for newfile in $(sudo find $TARGET_ROOT -type f -name '*rpmnew') ; do
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sudo mv $newfile $(echo $newfile | sed 's/.rpmnew$//')
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done
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sudo rm -f ${TARGET_ROOT}/.extra_settings
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