mirror of
https://github.com/leitbogioro/Tools.git
synced 2024-11-15 05:34:34 +08:00
165 lines
7.1 KiB
Bash
165 lines
7.1 KiB
Bash
#!/bin/ash
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#
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# Alpine Linux use "ash" as the default shell.
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# Find available temporary tty.
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for ttyItems in "/dev/tty0" "/dev/ttyS0" "/dev/ttyAMA0"; do
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ttyAttribute=$(stty -F "$ttyItems")
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[[ -n "$ttyAttribute" && -n $(echo "$ttyAttribute" | grep -io "\-brkint ixoff \-imaxbel") ]] && {
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break
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}
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done
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exec >"$ttyItems" 2>&1
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# Delete the initial script itself to prevent to be executed in the new system.
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rm -f /etc/local.d/rhelConf.start
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rm -f /etc/runlevels/default/local
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# Install necessary components.
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apk update
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apk add coreutils grep sed
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# Get RHEL Linux configurations.
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confFile='/root/alpine.config'
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cloudInitFile='/mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg'
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# Read configs from initial file.
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rhelArchitecture=$(grep "rhelArchitecture" $confFile | awk '{print $2}')
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IncDisk=$(grep "IncDisk" $confFile | awk '{print $2}')
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LinuxMirror=$(grep -w "LinuxMirror" $confFile | awk '{print $2}')
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alpineVer=$(grep "alpineVer" $confFile | awk '{print $2}')
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TimeZone1=$(grep "TimeZone" $confFile | awk '{print $2}' | cut -d'/' -f 1)
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TimeZone2=$(grep "TimeZone" $confFile | awk '{print $2}' | cut -d'/' -f 2)
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tmpWORD=$(grep -w "tmpWORD" $confFile | awk '{print $2}')
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sshPORT=$(grep "sshPORT" $confFile | awk '{print $2}')
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networkAdapter=$(grep "networkAdapter" $confFile | awk '{print $2}')
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IPv4=$(grep "IPv4" $confFile | awk '{print $2}')
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MASK=$(grep "MASK" $confFile | awk '{print $2}')
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ipPrefix=$(grep "ipPrefix" $confFile | awk '{print $2}')
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actualIp4Prefix=$(grep "actualIp4Prefix" $confFile | awk '{print $2}')
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GATE=$(grep "GATE" $confFile | awk '{print $2}')
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ipDNS1=$(grep "ipDNS1" $confFile | awk '{print $2}')
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ipDNS2=$(grep "ipDNS2" $confFile | awk '{print $2}')
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iAddrNum=$(grep "iAddrNum" $confFile | awk '{print $2}')
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writeIpsCmd=$(grep "writeIpsCmd" $confFile | awk '{print $2}')
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ip6Addr=$(grep "ip6Addr" $confFile | awk '{print $2}')
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ip6Mask=$(grep "ip6Mask" $confFile | awk '{print $2}')
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actualIp6Prefix=$(grep "actualIp6Prefix" $confFile | awk '{print $2}')
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ip6Gate=$(grep "ip6Gate" $confFile | awk '{print $2}')
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ip6DNS1=$(grep "ip6DNS1" $confFile | awk '{print $2}')
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ip6DNS2=$(grep "ip6DNS2" $confFile | awk '{print $2}')
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i6AddrNum=$(grep "i6AddrNum" $confFile | awk '{print $2}')
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writeIp6sCmd=$(grep "writeIp6sCmd" $confFile | awk '{print $2}')
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setIPv6=$(grep "setIPv6" $confFile | awk '{print $2}')
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HostName=$(grep "HostName" $confFile | awk '{print $2}')
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DDURL=$(grep "DDURL" $confFile | awk '{print $2}')
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DEC_CMD=$(grep "DEC_CMD" $confFile | awk '{print $2}')
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cloudInitUrl=$(grep "cloudInitUrl" $confFile | awk '{print $2}')
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RedHatSeries=$(grep "RedHatSeries" $confFile | awk '{print $2}')
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lowMemMode=$(grep "lowMemMode" $confFile | awk '{print $2}')
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serialConsolePropertiesForGrub=$(grep "serialConsolePropertiesForGrub" $confFile | sed -e 's/serialConsolePropertiesForGrub //g')
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# Reset configurations of repositories.
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true >/etc/apk/repositories
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setup-apkrepos $LinuxMirror/$alpineVer/main
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setup-apkcache /var/cache/apk
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# Add community mirror.
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sed -i '$a\'$LinuxMirror'/'$alpineVer'/community' /etc/apk/repositories
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# Add edge testing to the repositories
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# sed -i '$a\'$LinuxMirror'/edge/testing' /etc/apk/repositories
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# Synchronize time from hardware.
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hwclock -s || true
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# Install necessary components.
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apk update
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apk add hdparm multipath-tools util-linux wget xz
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# Start dd.
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wget --no-check-certificate --report-speed=bits --tries=0 --timeout=10 --wait=5 -O- "$DDURL" | $DEC_CMD | dd of="$IncDisk" status=progress
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# Get valid loop device.
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loopDevice=$(echo $(losetup -f))
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loopDeviceNum=$(echo $(losetup -f) | cut -d'/' -f 3)
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# Make a soft link between valid loop device and disk.
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losetup $loopDevice $IncDisk
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# Get mapper partition.
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mapperDevice=$(kpartx -av $loopDevice | grep "$loopDeviceNum" | sort -rn | sed -n '1p' | awk '{print $3}')
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# Mount RHEL dd partition to /mnt .
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mount /dev/mapper/$mapperDevice /mnt
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# Download cloud init file.
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wget --no-check-certificate -qO $cloudInitFile ''$cloudInitUrl''
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# User config.
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sed -ri 's/HostName/'${HostName}'/g' $cloudInitFile
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sed -ri 's/tmpWORD/'${tmpWORD}'/g' $cloudInitFile
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sed -ri 's/sshPORT/'${sshPORT}'/g' $cloudInitFile
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sed -ri 's/TimeZone/'${TimeZone1}'\/'${TimeZone2}'/g' $cloudInitFile
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sed -ri 's/networkAdapter/'${networkAdapter}'/g' $cloudInitFile
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if [[ "$iAddrNum" -ge "2" ]]; then
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sed -ri 's#IPv4/ipPrefix#'${writeIpsCmd}'#g' $cloudInitFile
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else
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sed -ri 's/IPv4/'${IPv4}'/g' $cloudInitFile
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sed -ri 's/ipPrefix/'${ipPrefix}'/g' $cloudInitFile
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sed -ri "s/${IPv4}\/${ipPrefix}/${IPv4}\/${actualIp4Prefix}/g" $cloudInitFile
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fi
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sed -ri 's/GATE/'${GATE}'/g' $cloudInitFile
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sed -ri 's/ipDNS1/'${ipDNS1}'/g' $cloudInitFile
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sed -ri 's/ipDNS2/'${ipDNS2}'/g' $cloudInitFile
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if [[ "$i6AddrNum" -ge "2" ]]; then
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sed -ri 's#ip6Addr/ip6Mask#'${writeIp6sCmd}'#g' $cloudInitFile
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else
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sed -ri 's/ip6Addr/'${ip6Addr}'/g' $cloudInitFile
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sed -ri 's/ip6Mask/'${ip6Mask}'/g' $cloudInitFile
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sed -ri "s/${ip6Addr}\/${ip6Mask}/${ip6Addr}\/${actualIp6Prefix}/g" $cloudInitFile
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fi
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sed -ri 's/ip6Gate/'${ip6Gate}'/g' $cloudInitFile
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sed -ri 's/ip6DNS1/'${ip6DNS1}'/g' $cloudInitFile
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sed -ri 's/ip6DNS2/'${ip6DNS2}'/g' $cloudInitFile
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# Disable SELinux permanently.
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sed -ri 's/^SELINUX=.*/SELINUX=disabled/g' /mnt/etc/selinux/config
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# Disable IPv6.
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[[ "$setIPv6" == "0" ]] && sed -ri 's/net.ifnames=0 biosdevname=0/net.ifnames=0 biosdevname=0 ipv6.disable=1/g' /mnt/etc/default/grub
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# Add tty console for grub.
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sed -ri 's/console=tty0//g' /mnt/etc/default/grub
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sed -ri 's/console=ttyS0,115200n8/console=tty1 console=ttyS0,115200n8/g' /mnt/etc/default/grub
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# Replace serial console parameters.
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[[ -n "$serialConsolePropertiesForGrub" && $(echo "$serialConsolePropertiesForGrub" | sed 's/[[:space:]]/#/g' | grep "ttyAMA[0-9]") ]] && {
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sed -ri 's/console=tty1/console=tty1 console=ttyAMA0,115200n8/g' /mnt/etc/default/grub
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}
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# Permit root user login by password, change ssh port.
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sed -ri 's/^#?PermitRootLogin.*/PermitRootLogin yes/g' /mnt/etc/ssh/sshd_config
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sed -ri 's/^#?PasswordAuthentication.*/PasswordAuthentication yes/g' /mnt/etc/ssh/sshd_config
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sed -ri 's/^#?Port.*/Port '${sshPORT}'/g' /mnt/etc/ssh/sshd_config
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# Disable allocate swap.
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# Note: Swap allowcation in "runcmd:" stage during execution of cloud init on aarch64 CPU architecture would cause a fatal because of "cloud-final.service" runs failed.
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[[ "$lowMemMode" != "1" || "$rhelArchitecture" == "aarch64" ]] && sed -i '/swapspace/d' $cloudInitFile
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# Hack cloud init.
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# Note: this trick has a great effect on Ubuntu 20.04+, AlmaLinux / Rocky 9+ in almost any cloud platforms but unfortunately it
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# is not suitable for Rocky 8 otherwise cloud init will meet a fatal may because of the lower version of python3.6(others are 3.9).
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# More details: https://github.com/leitbogioro/Tools/blob/master/Linux_reinstall/Ubuntu/ubuntuInit.sh
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[[ "$RedHatSeries" -ge "9" ]] && {
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utilProgram=$(find /mnt/usr/lib/python* -name "util.py" | grep "cloudinit" | head -n 1)
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sed -ri 's/iso9660/osi9876/g' $utilProgram
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sed -ri 's#"blkid"#"echo"#g' $utilProgram
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}
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# Umount mounted directory and loop device.
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umount /mnt
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kpartx -dv $loopDevice
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losetup -d $loopDevice
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# Reboot, the temporary intermediary system of AlpineLinux which is executing in memory will be destroyed during the power down and then server will reboot to the newly installed system immediately.
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exec reboot
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