mirror of
https://github.com/rocky-linux/rocky-tools.git
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55b70e0913
In case the script gets copied around and mirrored, the end user should see where to get the latest version.
598 lines
19 KiB
Bash
598 lines
19 KiB
Bash
#!/bin/bash
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#
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# migrate2rocky - Migrate another EL8 distribution to RockyLinux 8.
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# By: Peter Ajamian <peter@pajamian.dhs.org>
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# Adapted from centos2rocky.sh by label <label@rockylinux.org>
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#
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# The latest version of this script can be found at:
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# https://github.com/rocky-linux/rocky-tools
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#
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## Rocky is RC status. Using this script means you accept all risks of system
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## instability.
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# Path to logfile
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logfile=/var/log/migrate2rocky.log
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# Send all output to the logfile as well as stdout.
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truncate -s0 "$logfile"
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exec > >(tee -a "$logfile") 2> >(tee -a "$logfile" >&2)
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# List nocolor last here so that -x doesn't bork the display.
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#errcolor=$(tput setaf 1)
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#blue=$(tput setaf 4)
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#nocolor=$(tput op)
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unset errcolor blue nocolor
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export LANG=en_US.UTF-8
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shopt -s nullglob
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SUPPORTED_MAJOR="8"
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SUPPORTED_PLATFORM="platform:el$SUPPORTED_MAJOR"
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ARCH=$(arch)
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repo_urls=(
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"rockybaseos,https://dl.rockylinux.org/pub/rocky/${SUPPORTED_MAJOR}/BaseOS/$ARCH/os/"
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"rockyappstream,https://dl.rockylinux.org/pub/rocky/${SUPPORTED_MAJOR}/AppStream/$ARCH/os/"
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)
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unset CDPATH
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exit_message() {
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printf '%s\n' "$1"
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final_message
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exit 1
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} >&2
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final_message() {
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printf '%s\n' "${errcolor}An error occurred while we were attempting to convert your system to Rocky Linux. Your system may be unstable. Script will now exit to prevent possible damage.$nocolor"
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logmessage
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}
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logmessage(){
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printf '%s\n' "${blue}A log of this installation can be found at $logfile$nocolor"
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}
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# This just grabs a field from os-release and returns it.
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os-release () (
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. /etc/os-release
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if ! [[ ${!1} ]]; then
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return 1
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fi
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printf '%s\n' "${!1}"
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)
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# Check the version of a package against a supplied version number. Note that
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# this uses sort -V to compare the versions which isn't perfect for rpm package
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# versions, but to do a proper comparison we would need to use rpmdev-vercmp in
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# the rpmdevtools package which we don't want to force-install. sort -V should
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# be adequate for our needs here.
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pkg_ver() (
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ver=$(rpm -q --qf '%{VERSION}\n' "$1") || return 2
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if [[ $(sort -V <<<"$ver"$'\n'"$2" | head -1) != $2 ]]; then
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return 1
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fi
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return 0
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)
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# All of the binaries used by this script are available in a EL8 minimal install
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# and are in /bin, so we should not encounter a system where the script doesn't
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# work unless it's severly broken. This is just a simple check that will cause
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# the script to bail if any expected system utilities are missing.
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bin_check() {
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# Make sure we're root.
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if (( EUID != 0 )); then
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exit_message "You must run this script as root. Either use sudo or 'su -c ${0}'"
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fi
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# Check the platform.
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if [[ $(os-release PLATFORM_ID) != $SUPPORTED_PLATFORM ]]; then
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exit_message "This script must be run on an EL8 distribution. Migration from other distributions is not supported."
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fi
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# We need bash version >= 4 for associative arrays. This will also verify
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# that we're actually running bash.
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if (( BASH_VERSINFO < 4 )); then
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exit_message "bash >= 4.0 is required for this script."
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fi
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local -a missing bins
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bins=(
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rpm dnf awk column tee tput mkdir
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cat arch sort uniq rmdir rm head
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)
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if [[ $update_efi ]]; then
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bins+=(findmnt grub2-mkconfig efibootmgr)
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fi
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for bin in "${bins[@]}"; do
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if ! type "$bin" >/dev/null 2>&1; then
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missing+=("$bin")
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fi
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done
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if ! pkg_ver dnf 4.2; then
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exit_message 'dnf >= 4.2 is required for this script. Please run "dnf update" first.'
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fi
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if (( ${#missing[@]} )); then
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exit_message "Commands not found: ${missing[@]}. Possible bad PATH setting or corrupt installation."
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fi
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}
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# This function will overwrite the repoquery_results associative array with the
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# info for the resulting package. Note that we explicitly disable the epel repo
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# as a special-case below to avoid having the extras repository map to epel.
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repoquery () {
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local name val prev result=$(
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dnf -q --setopt=epel.excludepkgs=epel-release repoquery -i "$1" ||
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exit_message "Failed to fetch info for package $1."
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)
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if ! [[ $result ]]; then
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# We didn't match this package, the repo could be disabled.
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return 1
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fi
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declare -gA repoquery_results=()
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while IFS=" :" read -r name val; do
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if [[ -z $name ]]; then
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repoquery_results[$prev]+=" $val"
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else
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prev=$name
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repoquery_results[$name]=$val
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fi
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done <<<"$result"
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}
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# This function will overwrite the repoinfo_results associative array with the
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# info for the resulting repository.
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repoinfo () {
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local name val result
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result=$(dnf -q repoinfo "$1") ||
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exit_message "Failed to fetch info for repository $1."
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if [[ $result == 'Total packages: 0' ]]; then
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# We didn't match this repo.
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return 1
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fi
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declare -gA repoinfo_results=()
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while IFS=" :" read -r name val; do
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if [[ -z $name ]]; then
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repoinfo_results[$prev]+=" $val"
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else
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prev=$name
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repoinfo_results[$name]=$val
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fi
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done <<<"$result"
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# dnf repoinfo doesn't return the gpgkey, but we need that so we have to get
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# it from the repo file itself.
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# "end_of_file" is a hack here. Since it is not a valid dnf setting we know
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# it won't appear in a .repo file on a line by itself, so it's safe to
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# search for the string to make the awk parser look all the way to the end
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# of the file.
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repoinfo_results[Repo-gpgkey]=$(
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awk '
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$0=="['"${repoinfo_results[Repo-id]}"']",$0=="end_of_file" {
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if (l++ < 1) {next}
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else if (/^\[.*\]$/) {nextfile}
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else if (sub(/^gpgkey\s*=\s*file:\/\//,"")) {print; nextfile}
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else {next}
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}
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' < "${repoinfo_results[Repo-filename]}"
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)
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# Add an indicator of whether this is a subscription-manager managed
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# repository.
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repoinfo_results[Repo-managed]=$(
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awk '
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BEGIN {FS="[)(]"}
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/^# Managed by \(.*\) subscription-manager$/ {print $2}
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' < "${repoinfo_results[Repo-filename]}"
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)
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}
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provides_pkg () (
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if [[ ! $1 ]]; then
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return 0
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fi
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set -o pipefail
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provides=$(dnf -q provides "$1" | awk '{print $1; nextfile}') ||
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return 1
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set +o pipefail
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pkg=$(dnf -q repoquery --queryformat '%{NAME}' "$provides") ||
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exit_message "Can't get package name for $provides."
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printf '%s\n' "$pkg"
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)
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collect_system_info () {
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# Check the efi mount first, so we can bail before wasting time on all these
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# other checks if it's not there.
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if [[ $update_efi ]]; then
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declare -g efi_mount
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efi_mount=$(findmnt --mountpoint /boot/efi --output SOURCE \
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--noheadings) ||
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exit_message "Can't find EFI mount. No EFI boot detected."
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fi
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# Don't enable these module streams, even if they are enabled in the source
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# distro.
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declare -g -a module_excludes
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module_excludes=(
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libselinux-python:2.8
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)
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# We need to map rockylinux repository names to the equivalent repositories
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# in the source distro. To do that we look for known packages in each
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# repository and see what repo they came from. We need to use repoquery for
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# this which requires downloading the package, so we pick relatively small
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# packages for this.
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declare -g -A repo_map pkg_repo_map
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declare -g -a managed_repos
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pkg_repo_map=(
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[baseos]=rootfiles.noarch
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[appstream]=apr-util-ldap.$ARCH
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[ha]=pacemaker-doc.noarch
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[powertools]=libaec-devel.$ARCH
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[extras]=epel-release.noarch
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)
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# [devel]=quota-devel.$ARCH
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PRETTY_NAME=$(os-release PRETTY_NAME)
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printf '%s\n' "${blue}Preparing to migrate $PRETTY_NAME to Rocky Linux 8.$nocolor"
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printf '\n%s' "${blue}Determining repository names for $PRETTY_NAME$nocolor"
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for r in "${!pkg_repo_map[@]}"; do
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printf '.'
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p=${pkg_repo_map[$r]}
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repoquery "$p" || continue
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repo_map[$r]=${repoquery_results[Repository]}
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done
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printf '%s\n' '' '' "Found the following repositories which map from $PRETTY_NAME to Rocky Linux 8:"
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column -t -N "$PRETTY_NAME,Rocky Linux 8" < <(for r in "${!repo_map[@]}"; do
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printf '%s %s\n' "${repo_map[$r]}" "$r"
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done)
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printf '\n%s' "${blue}Getting system package names for $PRETTY_NAME$nocolor."
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# We don't know what the names of these packages are, we have to discover
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# them via various means. The most common means is to look for either a
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# distro-agnostic provides or a filename. In a couple of cases we need to
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# jump through hoops to get a filename that is provided specifically by the
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# source distro.
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# Get info for each repository to determine which ones are subscription
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# managed.
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# system-release here is a bit of a hack, but it ensures that the
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# rocky-repos package will get installed.
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for r in "${!repo_map[@]}"; do
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repoinfo "${repo_map[$r]}"
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if [[ $r == "baseos" ]]; then
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local baseos_filename=system-release
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if [[ ! ${repoinfo_results[Repo-managed]} ]]; then
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baseos_filename="${repoinfo_results[Repo-filename]}"
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fi
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local baseos_gpgkey="${repoinfo_results[Repo-gpgkey]}"
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fi
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if [[ ${repoinfo_results[Repo-managed]} ]]; then
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managed_repos+=("${repo_map[$r]}")
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fi
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done
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# First get info for the baseos repo
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repoinfo "${repo_map[baseos]}"
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declare -g -A pkg_map provides_pkg_map
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declare -g -a addl_provide_removes addl_pkg_removes
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provides_pkg_map=(
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[rocky-backgrounds]=system-backgrounds
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[rocky-indexhtml]=redhat-indexhtml
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[rocky-repos]="$baseos_filename"
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[rocky-logos]=system-logos
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[rocky-gpg-keys]="$baseos_gpgkey"
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[rocky-release]=system-release
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)
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addl_provide_removes=(
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redhat-release-eula
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)
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for pkg in "${!provides_pkg_map[@]}"; do
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printf '.'
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prov=${provides_pkg_map[$pkg]}
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pkg_map[$pkg]=$(provides_pkg $prov) ||
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exit_message "Can't get package that provides $prov."
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done
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for prov in "${addl_provide_removes[@]}"; do
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printf '.'
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local pkg;
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pkg=$(provides_pkg $prov) || continue
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addl_pkg_removes+=("$pkg")
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done
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printf '%s\n' '' '' "Found the following system packages which map from $PRETTY_NAME to Rocky Linux 8:"
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column -t -N "$PRETTY_NAME,Rocky Linux 8" < <(for p in "${!pkg_map[@]}"; do
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printf '%s %s\n' "${pkg_map[$p]}" "$p"
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done)
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printf '%s\n' '' "${blue}Getting list of installed system packages$nocolor."
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readarray -t installed_packages < <(rpm -qa --queryformat="%{NAME}\n" "${pkg_map[@]}")
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declare -g -A installed_pkg_check installed_pkg_map
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for p in "${installed_packages[@]}"; do
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installed_pkg_check[$p]=1
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done
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for p in "${!pkg_map[@]}"; do
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if [[ ${installed_pkg_check[${pkg_map[$p]}]} ]]; then
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installed_pkg_map[$p]=${pkg_map[$p]}
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fi
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done;
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printf '%s\n' '' "We will replace the following $PRETTY_NAME packages with their Rocky Linux 8 equivalents"
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column -t -N "Packages to be Removed,Packages to be Installed" < <(
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for p in "${!installed_pkg_map[@]}"; do
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printf '%s %s\n' "${installed_pkg_map[$p]}" "$p"
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done
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)
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if (( ${#addl_pkg_removes[@]} )); then
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printf '%s\n' '' "In addition to the above the following system packages will be removed:" \
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"${addl_pkg_removes[@]}"
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fi
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# Release packages that are part of SIG's should be listed below when they
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# are available.
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# UPDATE: We may or may not do something with SIG's here, it could just be
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# left as a separate excersize to swap out the sig repos.
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#sigs_to_swap=()
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printf '%s\n' '' "${blue}Getting a list of enabled modules for the system repositories$nocolor."
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# Get a list of system enabled modules.
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readarray -t enabled_modules < <(
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set -e -o pipefail
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dnf -q "${repo_map[@]/#/--repo=}" module list --enabled |
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awk '
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$1 == "@modulefailsafe", /^$/ {next}
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$1 == "Name", /^$/ {if ($1!="Name" && !/^$/) print $1":"$2}
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' | sort -u
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set +e +o pipefail
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)
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# Remove entries matching any excluded modules.
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if (( ${#module_excludes[@]} )); then
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printf '%s\n' '' "Excluding modules:" "${module_excludes[@]}"
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local -A module_check='()'
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local -a tmparr='()'
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for m in "${module_excludes[@]}"; do
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module_check[$m]=1
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done
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for m in "${enabled_modules[@]}"; do
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if [[ ! ${module_check[$m]} ]]; then
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tmparr+=("$m")
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fi
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done
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enabled_modules=("${tmparr[@]}")
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fi
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printf '%s\n' '' "Found the following modules to re-enable at completion:" \
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"${enabled_modules[@]}" ''
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if (( ${#managed_repos[@]} )); then
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printf '%s\n' '' "In addition, since this system uses subscription-manger the following managed repos will be disabled:" \
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"${managed_repos[@]}"
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fi
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}
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convert_info_dir=/root/convert
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unset convert_to_rocky reinstall_all_rpms verify_all_rpms update_efi
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usage() {
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printf '%s\n' \
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"Usage: ${0##*/} [OPTIONS]" \
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'' \
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'Options:' \
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'-h Display this help' \
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'-r Convert to rocky' \
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'-V Verify switch' \
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' !! USE WITH CAUTION !!'
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exit 1
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} >&2
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generate_rpm_info() {
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mkdir /root/convert
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printf '%s\n' "${blue}Creating a list of RPMs installed: $1$nocolor"
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rpm -qa --qf "%{NAME}|%{VERSION}|%{RELEASE}|%{INSTALLTIME}|%{VENDOR}|%{BUILDTIME}|%{BUILDHOST}|%{SOURCERPM}|%{LICENSE}|%{PACKAGER}\n" | sort > "${convert_info_dir}/$HOSTNAME-rpm-list-$1.log"
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printf '%s\n' "${blue}Verifying RPMs installed against RPM database: $1$nocolor" ''
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rpm -Va | sort -k3 > "${convert_info_dir}/$HOSTNAME-rpm-list-verified-$1.log"
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}
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package_swaps() {
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# Use dnf shell to swap the system packages out.
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dnf -y shell --nogpg --disablerepo=\* --noautoremove \
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--setopt=protected_packages= --setopt=keepcache=True \
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"${repo_urls[@]/#/--repofrompath=}" <<EOF
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remove ${installed_pkg_map[@]} ${addl_pkg_removes[@]}
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install ${!installed_pkg_map[@]}
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run
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exit
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EOF
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# We need to check to make sure that all of the original system packages
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# have been removed and all of the new ones have been added. If a package
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# was supposed to be removed and one with the same name added back then
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# we're kind of screwed for this check, as we can't be certain, but all the
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# packages we're adding start with "rocky-*" so this really shouldn't happen
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# and we can safely not check for it. The worst that will happen is a rocky
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# linux package will be removed and then installed again.
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local -a check_removed check_installed
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readarray -t check_removed < <(
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rpm -qa --qf '%{NAME}\n' "${installed_pkg_map[@]}" \
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"${addl_pkg_removes[@]}" | sort -u
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)
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if (( ${#check_removed[@]} )); then
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printf '%s\n' '' "${blue}Packages found on system that should still be removed. Forcibly removing them with rpm:$nocolor"
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# Removed packages still found on the system. Forcibly remove them.
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for pkg in "${check_removed[@]}"; do
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printf '%s\n' "$pkg"
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rpm -e --allmatches --nodeps "${check_removed[@]}" ||
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rpm -e --allmatches --nodeps --noscripts --notriggers "$pkg"
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done
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fi
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# Check to make sure we installed everything we were supposed to.
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readarray -t check_installed < <(
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{
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printf '%s\n' "${!installed_pkg_map[@]}" | sort -u
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rpm -qa --qf '%{NAME}\n' "${!installed_pkg_map[@]}" | sort -u
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} | sort | uniq -u
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)
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if (( ${#check_installed[@]} )); then
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printf '%s\n' '' "${blue}Some required packages were not installed by dnf. Attempting to force with rpm:$nocolor"
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# Get a list of rpm packages to package names
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local -A rpm_map
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local -a file_list
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for rpm in /var/cache/dnf/{rockybaseos,rockyappstream}-*/packages/*.rpm
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do
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rpm_map[$(
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rpm -q --qf '%{NAME}\n' --nodigest "$rpm" 2>/dev/null
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)]=$rpm
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done
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# Attempt to install.
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for pkg in "${check_installed[@]}"; do
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printf '%s\n' "$pkg"
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if ! rpm -i --force --nodeps --nodigest "${rpm_map[$pkg]}" \
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2>/dev/null; then
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# Try to install the package in just the db, then clean it up.
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|
rpm -i --force --justdb --nodeps --nodigest "${rpm_map[$pkg]}" \
|
|
2>/dev/null
|
|
|
|
# Get list of files that are still causing problems and donk
|
|
# them.
|
|
readarray -t file_list < <(
|
|
rpm -V "$pkg" 2>/dev/null | awk '$1!="missing" {print $2}'
|
|
)
|
|
for file in "${file_list[@]}"; do
|
|
rmdir "$file" ||
|
|
rm -f "$file" ||
|
|
rm -rf "$file"
|
|
done
|
|
|
|
# Now try re-installing the package to replace the missing
|
|
# files. Regardless of the outcome here we just accept it and
|
|
# move on and hope for the best.
|
|
rpm -i --reinstall --force --nodeps --nodigest \
|
|
"${rpm_map[$pkg]}" 2>/dev/null
|
|
fi
|
|
done
|
|
fi
|
|
|
|
# Distrosync
|
|
printf '%s\n' '' "${blue}Removing dnf cache$nocolor"
|
|
rm -rf /var/cache/{yum,dnf}
|
|
printf '%s\n' "${blue}Ensuring repos are enabled before the package swap$nocolor"
|
|
dnf -y config-manager --set-enabled "${!repo_map[@]}" || {
|
|
printf '%s\n' 'Repo name missing?'
|
|
exit 25
|
|
}
|
|
|
|
if (( ${#managed_repos[@]} )); then
|
|
# Filter the managed repos for ones still in the system.
|
|
readarray -t managed_repos < <(
|
|
dnf -q repolist "${managed_repos[@]}" | awk '$1!="repo" {print $1}'
|
|
)
|
|
|
|
if (( ${#managed_repos[@]} )); then
|
|
printf '%s\n' '' "${blue}Disabling subscription managed repos$nocolor."
|
|
dnf -y config-manager --disable "${managed_repos[@]}"
|
|
fi
|
|
fi
|
|
|
|
if (( ${#enabled_modules[@]} )); then
|
|
printf '%s\n' "${blue}Enabling modules$nocolor" ''
|
|
dnf -y module enable "${enabled_modules[@]}" ||
|
|
exit_message "Can't enable modules ${enabled_modules[@]}"
|
|
fi
|
|
|
|
# Make sure that excluded repos are disabled.
|
|
printf '%s\n' "${blue}Disabling excluded modules$nocolor" ''
|
|
dnf -y module disable "${module_excludes[@]}" ||
|
|
exit_message "Can't disable modules ${module_excludes[@]}"
|
|
|
|
printf '%s\n' '' "${blue}Syncing packages$nocolor" ''
|
|
dnf -y distro-sync || exit_message "Error during distro-sync."
|
|
}
|
|
|
|
# Check if this system is running on EFI
|
|
# If yes, we'll need to run fix_efi() at the end of the conversion
|
|
efi_check () {
|
|
# Check if we have /sys mounted and it is looking sane
|
|
if ! [[ -d /sys/class/block ]]; then
|
|
exit_message "/sys is not accessible."
|
|
fi
|
|
|
|
# Now that we know /sys is reliable, use it to check if we are running on EFI or not
|
|
if [[ -d /sys/firmware/efi/ ]]; then
|
|
declare -g update_efi
|
|
update_efi=true
|
|
fi
|
|
}
|
|
|
|
# Called to update the EFI boot.
|
|
fix_efi () (
|
|
grub2-mkconfig -o /boot/efi/EFI/rocky/grub.cfg ||
|
|
exit_message "Error updating the grub config."
|
|
efibootmgr -c -d "$efi_mount" -L "Rocky Linux" -l /EFI/rocky/grubx64.efi ||
|
|
exit_message "Error updating uEFI firmware."
|
|
)
|
|
|
|
## End actual work
|
|
|
|
noopts=0
|
|
while getopts "hrVR" option; do
|
|
(( noopts++ ))
|
|
case "$option" in
|
|
h)
|
|
usage
|
|
;;
|
|
r)
|
|
convert_to_rocky=true
|
|
;;
|
|
V)
|
|
verify_all_rpms=true
|
|
;;
|
|
*)
|
|
printf '%s\n' "${errcolor}Invalid switch.$nocolor"
|
|
usage
|
|
;;
|
|
esac
|
|
done
|
|
if (( ! noopts )); then
|
|
usage
|
|
fi
|
|
|
|
efi_check
|
|
bin_check
|
|
|
|
if [[ $verify_all_rpms ]]; then
|
|
generate_rpm_info begin
|
|
fi
|
|
|
|
if [[ $convert_to_rocky ]]; then
|
|
collect_system_info
|
|
package_swaps
|
|
fi
|
|
|
|
if [[ $verify_all_rpms && $convert_to_rocky ]]; then
|
|
generate_rpm_info finish
|
|
printf '%s\n' "${blue}You may review the following files:$nocolor"
|
|
find /root/convert -type f -name "$HOSTNAME-rpms-*.log"
|
|
fi
|
|
|
|
if [[ $update_efi && $convert_to_rocky ]]; then
|
|
fix_efi
|
|
fi
|
|
|
|
printf '\n\n\n'
|
|
if [[ $convert_to_rocky ]]; then
|
|
cat /etc/issue | awk 'NR<=15'
|
|
printf '%s\n' "$blue" "Done, please reboot your system.$nocolor"
|
|
fi
|
|
logmessage
|