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Update RHELinit.sh
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Molly Lau
GitHub
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commit
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1 changed files with 131 additions and 0 deletions
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#!/bin/ash
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#
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# Alpine Linux use "ash" as the default shell.
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exec >/dev/tty0 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 bash coreutils grep sed
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# Get RHEL Linux configurations.
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confFile="/root/alpine.config"
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# Read configs from initial file.
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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 $2}')
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setFail2banStatus=$(grep "setFail2banStatus" $confFile | awk '{print $2}')
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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\'$LinuxMirror'/edge/testing' /etc/apk/repositories
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# Synchronize time from hardware
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hwclock -s
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# Install necessary components.
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apk update
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apk add ca-certificates hdparm multipath-tools parted util-linux wget xfsprogs xz
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# start dd
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wget --no-check-certificate -qO- "$DDURL" | $DEC_CMD | dd of="$IncDisk"
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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 /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg ''$cloudInitUrl''
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# user config
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sed -ri 's/HostName/'${HostName}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/tmpWORD/'${tmpWORD}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/sshPORT/'${sshPORT}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/TimeZone/'${TimeZone1}'\/'${TimeZone2}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/networkAdapter/'${networkAdapter}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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if [[ "$iAddrNum" -ge "2" ]]; then
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sed -ri 's#IPv4/ipPrefix#'${writeIpsCmd}'#g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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else
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sed -ri 's/IPv4/'${IPv4}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/ipPrefix/'${ipPrefix}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri "s/${IPv4}\/${ipPrefix}/${IPv4}\/${actualIp4Prefix}/g" /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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fi
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sed -ri 's/GATE/'${GATE}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/ipDNS1/'${ipDNS1}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/ipDNS2/'${ipDNS2}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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if [[ "$i6AddrNum" -ge "2" ]]; then
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sed -ri 's#ip6Addr/ip6Mask#'${writeIp6sCmd}'#g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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else
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sed -ri 's/ip6Addr/'${ip6Addr}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/ip6Mask/'${ip6Mask}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri "s/${ip6Addr}\/${ip6Mask}/${ip6Addr}\/${actualIp6Prefix}/g" /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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fi
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sed -ri 's/ip6Gate/'${ip6Gate}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/ip6DNS1/'${ip6DNS1}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -ri 's/ip6DNS2/'${ip6DNS2}'/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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# Disable any datahouse
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# Reference: https://github.com/canonical/cloud-init/issues/3772
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echo 'datasource_list: [ NoCloud, None ]' > /mnt/etc/cloud/cloud.cfg.d/90_dpkg.cfg
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# disable IPv6
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[[ "$setIPv6" == "0" ]] && {
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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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}
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# disable installing fail2ban
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[[ "$setFail2banStatus" != "1" ]] && {
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sed -ri 's/dnsutils fail2ban/dnsutils/g' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -i '/\/etc\/fail2ban/d' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -i '/fail2ban enable/d' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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sed -i '/fail2ban restart/d' /mnt/etc/cloud/cloud.cfg.d/99-fake_cloud.cfg
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}
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# Reboot, the system in the memory will all be written to the hard drive.
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exec reboot
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