mirror of
https://github.com/bin456789/reinstall.git
synced 2025-12-10 07:28:56 +08:00
改用 alpine 作为中间系统
This commit is contained in:
bin456789
321
reinstall.sh
321
reinstall.sh
@ -3,21 +3,47 @@ confhome=https://raw.githubusercontent.com/bin456789/reinstall/main
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localtest_confhome=http://192.168.253.1
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usage_and_exit() {
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echo "Usage: reinstall.sh centos-7/8/9 alma-8/9 rocky-8/9 fedora-36/37/38 ubuntu-20.04/22.04"
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echo "Usage: reinstall.sh centos-7/8/9 alma-8/9 rocky-8/9 fedora-36/37/38 ubuntu-20.04/22.04 alpine-3.16/3.17/3.18"
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exit 1
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}
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is_in_china() {
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# https://geoip.ubuntu.com/lookup
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curl -L https://geoip.fedoraproject.org/city | grep -w CN
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if [ -z $_is_in_china ]; then
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# https://geoip.ubuntu.com/lookup
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curl -L https://geoip.fedoraproject.org/city | grep -w CHN
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_is_in_china=$?
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fi
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return $_is_in_china
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}
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setos() {
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step=$1
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distro=$2
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releasever=$3
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ks=$4
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vault=$5
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local step=$1
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local distro=$2
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local releasever=$3
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local ks=$4
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setos_alpine() {
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eval ${step}_distro=$distro
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if [ "$localtest" = 1 ]; then
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mirror=$confhome/alpine-netboot-3.17.3-x86_64/boot
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eval ${step}_vmlinuz=$mirror/vmlinuz-lts
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eval ${step}_initrd=$mirror/initramfs-lts
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eval ${step}_repo=https://mirrors.aliyun.com/alpine/v3.17/main
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eval ${step}_modloop=$mirror/modloop-lts
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else
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# 不要用https 因为甲骨文云arm initramfs阶段不会从硬件同步时钟，导致访问https出错
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if is_in_china; then
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mirror=http://mirrors.aliyun.com/alpine/v$releasever
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else
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mirror=http://dl-cdn.alpinelinux.org/alpine/v$releasever
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fi
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eval ${step}_vmlinuz=$mirror/releases/$basearch/netboot/vmlinuz-lts
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eval ${step}_initrd=$mirror/releases/$basearch/netboot/initramfs-lts
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eval ${step}_repo=$mirror/main
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eval ${step}_modloop=$mirror/releases/$basearch/netboot/modloop-lts
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fi
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}
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setos_ubuntu() {
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if [ "$localtest" = 1 ]; then
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@ -48,40 +74,28 @@ setos() {
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eval ${step}_distro=ubuntu
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}
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setos_rh() {
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setos_redhat() {
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if [ "$localtest" = 1 ]; then
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mirror=$confhome/$releasever/
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eval ${step}_ks=$confhome/$ks
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else
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# 甲骨文 arm 1g内存，用 centos 7.9 镜像会 oom 进不了安装界面，所以用7.6
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if [ "$vault" = 1 ]; then
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if is_in_china; then
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[ "$basearch" = "x86_64" ] && dir= || dir=/altarch
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mirror="https://mirrors.aliyun.com/centos-vault$dir/7.6.1810/os/$basearch/"
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else
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[ "$basearch" = "x86_64" ] && dir=centos || dir=altarch
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mirror=http://vault.centos.org/$dir/7.6.1810/os/$basearch/
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fi
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else
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case $distro in
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"centos")
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case $releasever in
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"7") mirrorlist="http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=os" ;;
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"8") mirrorlist="http://mirrorlist.centos.org/?release=8-stream&arch=$basearch&repo=BaseOS" ;;
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"9") mirrorlist="https://mirrors.centos.org/mirrorlist?repo=centos-baseos-9-stream&arch=$basearch" ;;
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esac
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;;
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"alma") mirrorlist="https://mirrors.almalinux.org/mirrorlist/$releasever/baseos" ;;
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"rocky") mirrorlist="https://mirrors.rockylinux.org/mirrorlist?arch=$basearch&repo=BaseOS-$releasever" ;;
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"fedora") mirrorlist="https://mirrors.fedoraproject.org/mirrorlist?arch=$basearch&repo=fedora-$releasever" ;;
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case $distro in
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"centos")
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case $releasever in
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"7") mirrorlist="http://mirrorlist.centos.org/?release=7&arch=$basearch&repo=os" ;;
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"8") mirrorlist="http://mirrorlist.centos.org/?release=8-stream&arch=$basearch&repo=BaseOS" ;;
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"9") mirrorlist="https://mirrors.centos.org/mirrorlist?repo=centos-baseos-9-stream&arch=$basearch" ;;
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esac
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# rocky/centos9 需要删除第一行注释， alma 需要替换$basearch，anigil 这个源不稳定
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mirror=$(curl -L $mirrorlist | sed "/^#/d" | sed "/anigil/d" | head -1 | sed "s,\$basearch,$basearch,")
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eval "${step}_mirrorlist='${mirrorlist}'"
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fi
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eval ${step}_ks=$confhome/$ks
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;;
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"alma") mirrorlist="https://mirrors.almalinux.org/mirrorlist/$releasever/baseos" ;;
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"rocky") mirrorlist="https://mirrors.rockylinux.org/mirrorlist?arch=$basearch&repo=BaseOS-$releasever" ;;
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"fedora") mirrorlist="https://mirrors.fedoraproject.org/mirrorlist?arch=$basearch&repo=fedora-$releasever" ;;
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esac
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# rocky/centos9 需要删除第一行注释， alma 需要替换$basearch，anigil 这个源不稳定
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mirror=$(curl -L $mirrorlist | sed "/^#/d" | sed "/anigil/d" | head -1 | sed "s,\$basearch,$basearch,")
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eval "${step}_mirrorlist='${mirrorlist}'"
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fi
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eval ${step}_ks=$confhome/$ks
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eval ${step}_distro=${distro}
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eval ${step}_vmlinuz=${mirror}images/pxeboot/vmlinuz
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eval ${step}_initrd=${mirror}images/pxeboot/initrd.img
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@ -92,20 +106,59 @@ setos() {
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fi
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}
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if [ "$distro" = "ubuntu" ]; then
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setos_ubuntu
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else
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setos_rh
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fi
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case "$distro" in
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ubuntu) setos_ubuntu ;;
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alpine) setos_alpine ;;
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*) setos_redhat ;;
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esac
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}
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# 检查是否为正确的系统名
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verify_os_string() {
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for os in 'centos-7|8|9' 'alma|rocky-8|9' 'fedora-36|37|38' 'ubuntu-20.04|22.04' 'alpine-3.16|3.17|3.18'; do
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ds=$(echo $os | cut -d- -f1)
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vers=$(echo $os | cut -d- -f2 | sed 's \. \\\. g')
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finalos=$(echo "$@" | tr '[:upper:]' '[:lower:]' | sed -n -E "s,^($ds)[ :-]?($vers)$,\1:\2,p")
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if [ -n "$finalos" ]; then
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distro=$(echo $finalos | cut -d: -f1)
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releasever=$(echo $finalos | cut -d: -f2)
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return
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fi
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done
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echo "Please specify a proper os."
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usage_and_exit
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}
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apt_install() {
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[ -z "$apk_updated" ] && apt update && apk_updated=1
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apt install -y $pkgs
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}
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install_pkg() {
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pkgs=$*
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for pkg in $pkgs; do
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if ! command -v $pkg; then
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{
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apt_install $pkgs ||
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dnf install -y $pkgs ||
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yum install -y $pkgs ||
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zypper install -y $pkgs ||
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pacman -Syu $pkgs ||
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apk add $pkgs
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} 2>/dev/null
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break
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fi
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done
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}
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# 脚本入口
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if [ "$EUID" -ne 0 ]; then
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echo "Please run as root."
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exit 1
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fi
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opts=$(getopt -a -n $0 --options l --long localtest -- "$@")
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if [ "$?" != 0 ]; then
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if ! opts=$(getopt -a -n $0 --options l --long localtest -- "$@"); then
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usage_and_exit
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fi
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@ -128,68 +181,45 @@ while true; do
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esac
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done
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# 检查是否为正确的系统名
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for re in \
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"s,.*\b(centos|alma|rocky)(linux)?[ :-]?([789])\b.*,\1:\3,p" \
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"s,.*\b(fedora)(linux)?[ :-]?(3[678])\b.*,\1:\3,p" \
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"s,.*\b(ubuntu)(linux)?[ :-]?(2[02]\.04)\b.*,\1:\3,p"; do
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finalos=$(echo "$@" | tr '[:upper:]' '[:lower:]' | sed -n -E "$re")
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if [ -n "$finalos" ]; then
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break
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fi
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done
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if [ -z "$finalos" ]; then
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echo "Please specify a proper os."
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usage_and_exit
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fi
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# 最小安装的 debian 不包含 curl dmidecode
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install_pkg() {
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pkgs=$1
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for pkg in $pkgs; do
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if ! command -v $pkg; then
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{
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{ apt update && apt install -y $pkgs; } ||
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dnf install -y $pkgs ||
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yum install -y $pkgs ||
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zypper install -y $pkgs ||
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pacman -Syu $pkgs
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} 2>/dev/null
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break
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fi
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done
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}
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# 获取内存大小，lsmem最准确但centos7 arm不能用
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# arm 24g dmidecode 显示少了128m
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ram_size=$(lsmem -b | grep 'Total online memory:' | awk '{ print $NF/1024/1024 }')
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if [ -z $ram_size ]; then
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install_pkg dmidecode
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ram_size=$(dmidecode -t 17 | grep "Size.*[GM]B" | awk '{if ($3=="GB") s+=$2*1024; else s+=$2} END {print s}')
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fi
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if [ $ram_size -lt 1024 ]; then
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echo 'RAM < 1G. Unsupported.'
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exit 1
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fi
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verify_os_string "$@"
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# 必备组件
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install_pkg curl
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distro=$(echo $finalos | cut -d: -f1)
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releasever=$(echo $finalos | cut -d: -f2)
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basearch=$(uname -m)
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# alpine 自带的 grep 是 busybox 里面的， 要下载完整版grep
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if [ -f /etc/alpine-release ]; then
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apk add grep
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fi
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# 以下目标系统需要两步安装
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# ubuntu
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# 获取内存大小，lsmem最准确但centos7 arm 和alpine不能用
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# arm 24g dmidecode 显示少了128m
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if [ $distro != "alpine" ]; then
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install_pkg util-linux
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ram_size=$(lsmem -b 2>/dev/null | grep 'Total online memory:' | awk '{ print $NF/1024/1024 }')
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if [ -z $ram_size ]; then
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install_pkg dmidecode
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ram_size=$(dmidecode -t 17 | grep "Size.*[GM]B" | awk '{if ($3=="GB") s+=$2*1024; else s+=$2} END {print s}')
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fi
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if [ $ram_size -lt 1024 ]; then
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echo 'RAM < 1G. Unsupported.'
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exit 1
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fi
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fi
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basearch=$(uname -m)
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# 以下目标系统需要进入alpine环境安装
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# ubuntu/alpine
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# el8/9/fedora 任何架构 <2g
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# el7 aarch64 <1.5g
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# shellcheck disable=SC2154
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if [ $distro = "ubuntu" ] ||
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[ $distro = "alpine" ] ||
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{ [ $releasever -ge 8 ] && [ $ram_size -lt 2048 ]; } ||
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{ [ $releasever -eq 7 ] && [ $ram_size -lt 1536 ] && [ $basearch = "aarch64" ]; }; then
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[ $distro = "ubuntu" ] && ks=user-data || ks=ks.cfg
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# 安装alpine时，使用指定的版本。 alpine作为中间系统时，使用 3.18
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[ $distro = "alpine" ] && alpine_releasever=$releasever || alpine_releasever=3.18
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setos finalos $distro $releasever $ks
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setos nextos centos 7 ks-trans.cfg 1
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setos nextos alpine $alpine_releasever
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else
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setos nextos $distro $releasever ks.cfg
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fi
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@ -198,53 +228,110 @@ fi
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# shellcheck disable=SC2154
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{
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cd /
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curl -LO $nextos_vmlinuz
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curl -LO $nextos_initrd
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echo $nextos_vmlinuz
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curl -Lo vmlinuz $nextos_vmlinuz
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echo $nextos_initrd
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curl -Lo initrd $nextos_initrd
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touch reinstall.mark
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}
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# 转换 finalos_a=1 为 finalos.a=1 ，排除 finalos_mirrorlist
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build_finalos_cmdline() {
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for var in $(compgen -v finalos_); do
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key=${var//_/.}
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[ $key != "finalos.mirrorlist" ] && finalos_cmdline+=" $key=${!var}"
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for key in $(compgen -v finalos_); do
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value=${!key}
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key=${key#finalos_}
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if [ -n "$value" ] && [ $key != "mirrorlist" ]; then
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finalos_cmdline+=" finalos.$key=$value"
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||||
fi
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||||
done
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}
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build_extra_cmdline() {
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extra_cmdline+=" extra.confhome=$confhome"
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if [ "$localtest" = 1 ]; then
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extra_cmdline+=" extra.localtest=$localtest"
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||||
else
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||||
# 指定最终安装系统的 mirrorlist，链接有&，在grub中是特殊字符，所以要加引号
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if [ -n "$finalos_mirrorlist" ]; then
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extra_cmdline+=" extra.mirrorlist='$finalos_mirrorlist'"
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elif [ -n "$nextos_mirrorlist" ]; then
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extra_cmdline+=" extra.mirrorlist='$nextos_mirrorlist'"
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for key in localtest confhome; do
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||||
value=${!key}
|
||||
if [ -n "$value" ]; then
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||||
extra_cmdline+=" extra.$key=$value"
|
||||
fi
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||||
done
|
||||
|
||||
# 指定最终安装系统的 mirrorlist，链接有&，在grub中是特殊字符，所以要加引号
|
||||
if [ -n "$finalos_mirrorlist" ]; then
|
||||
extra_cmdline+=" extra.mirrorlist='$finalos_mirrorlist'"
|
||||
elif [ -n "$nextos_mirrorlist" ]; then
|
||||
extra_cmdline+=" extra.mirrorlist='$nextos_mirrorlist'"
|
||||
fi
|
||||
}
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||||
|
||||
# arm64 不需要添加 efi 字样
|
||||
if [ -d /sys/firmware/efi ] && [ "$basearch" = x86_64 ]; then
|
||||
action='efi'
|
||||
fi
|
||||
|
||||
build_finalos_cmdline
|
||||
build_extra_cmdline
|
||||
grub_cfg=$(find /boot -type f -name grub.cfg -exec grep -E -l 'menuentry|blscfg' {} \;)
|
||||
grub_cfg_dir=$(dirname $grub_cfg)
|
||||
|
||||
# 在x86 efi机器上，可能用 linux 或 linuxefi 加载内核
|
||||
# 通过检测原有的条目有没有 linuxefi 字样就知道当前 grub 用哪一种
|
||||
search_files=$(find /boot -type f -name grub.cfg)
|
||||
if [ -d /boot/loader/entries/ ]; then
|
||||
search_files="$search_files /boot/loader/entries/"
|
||||
fi
|
||||
if grep -q -r -E '^[[:blank:]]*linuxefi[[:blank:]]' $search_files; then
|
||||
efi=efi
|
||||
fi
|
||||
|
||||
# 修改 alpine 启动时运行我们的脚本
|
||||
# shellcheck disable=SC2154,SC2164
|
||||
if [ -n "$finalos_cmdline" ]; then
|
||||
install_pkg gzip cpio
|
||||
|
||||
# 解压
|
||||
# 先删除临时文件，避免之前运行中断有残留文件
|
||||
tmp_dir=/tmp/reinstall/
|
||||
rm -rf $tmp_dir
|
||||
mkdir -p $tmp_dir
|
||||
cd $tmp_dir
|
||||
zcat /initrd | cpio -idm
|
||||
|
||||
# hack
|
||||
# exec /bin/busybox switch_root $switch_root_opts $sysroot $chart_init "$KOPT_init" $KOPT_init_args # 3.17
|
||||
# exec switch_root $switch_root_opts $sysroot $chart_init "$KOPT_init" $KOPT_init_args # 3.18
|
||||
line_num=$(grep -E -n '^exec (/bin/busybox )?switch_root' init | cut -d: -f1)
|
||||
line_num=$((line_num - 1))
|
||||
cat <<EOF | sed -i "${line_num}r /dev/stdin" init
|
||||
# alpine arm initramfs 时间问题 要添加 --no-check-certificate
|
||||
wget --no-check-certificate -O \$sysroot/etc/local.d/trans.start $confhome/trans.sh
|
||||
chmod a+x \$sysroot/etc/local.d/trans.start
|
||||
ln -s /etc/init.d/local \$sysroot/etc/runlevels/default/
|
||||
EOF
|
||||
|
||||
# 重建
|
||||
# 注意要用 cpio -H newc 不要用 cpio -c ，不同版本的 -c 作用不一样，很坑
|
||||
# -c Use the old portable (ASCII) archive format
|
||||
# -c Identical to "-H newc", use the new (SVR4)
|
||||
# portable format.If you wish the old portable
|
||||
# (ASCII) archive format, use "-H odc" instead.
|
||||
find . | cpio -o -H newc | gzip -1 >/initrd
|
||||
|
||||
# 删除临时文件
|
||||
cd /
|
||||
rm -rf $tmp_dir
|
||||
|
||||
# 可添加 pkgs=xxx,yyy 启动时自动安装
|
||||
# apkovl=http://xxx.com/apkovl.tar.gz 可用，arm https未测但应该不行
|
||||
# apkovl=sda2:ext4:/apkovl.tar.gz 官方有写但不生效
|
||||
cmdline="alpine_repo=$nextos_repo modloop=$nextos_modloop $extra_cmdline $finalos_cmdline "
|
||||
else
|
||||
cmdline="root=live:$nextos_squashfs inst.ks=$nextos_ks $extra_cmdline"
|
||||
fi
|
||||
|
||||
custom_cfg=$grub_cfg_dir/custom.cfg
|
||||
echo $custom_cfg
|
||||
# shellcheck disable=SC2154
|
||||
cat <<EOF | tee $custom_cfg
|
||||
menuentry "reinstall" {
|
||||
insmod lvm
|
||||
insmod xfs
|
||||
search --no-floppy --file --set=root /reinstall.mark
|
||||
linux$action /vmlinuz root=live:$nextos_squashfs inst.ks=$nextos_ks $finalos_cmdline $extra_cmdline
|
||||
initrd$action /initrd.img
|
||||
linux$efi /vmlinuz $cmdline
|
||||
initrd$efi /initrd
|
||||
}
|
||||
EOF
|
||||
|
||||
|
||||
Reference in New Issue
Block a user