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#!/bin/bash |
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trap "exit" INT |
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echo -e "\nHost:" |
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ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -p 22 ubuntu@$1 \ |
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'uname -a && arch && uptime && sudo touch /home/ubuntu/.hushlogin /root/.hushlogin' |
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echo -e "\nAdding temporary SSH-key for Ubuntu root user..." |
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ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -p 22 ubuntu@$1 \ |
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'sudo cat /home/ubuntu/.ssh/authorized_keys | sudo tee /root/.ssh/authorized_keys' |
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echo -e "\nSystem trimming..." |
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ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -p 22 root@$1 -T <<'EOL' |
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export DEBIAN_FRONTEND=noninteractive |
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snap remove --purge oracle-cloud-agent && snap remove --purge core18 |
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apt-get purge -y linux-* lxc* lxd* vim* snapd* python* |
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apt-get update && apt-get install -y lsof |
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apt-get -y autoremove --purge |
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apt-get -y autoclean |
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rm -rf /var/log/* /var/lib/apt/* /var/cache/apt/* |
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df -h |
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EOL |
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echo "Check free space! for "/" mountpoint. <=700mb" |
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waittime=15 |
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while [ $waittime -gt 0 ]; do |
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echo -ne "$waittime\033[0K\r" |
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sleep 1 |
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: $((waittime--)) |
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done |
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echo -e "\nPreparing system..." |
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ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -p 22 root@$1 -T <<'EOL' |
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cd / |
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echo "Mounting tmpfs..." |
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mount -t tmpfs -o size=700m tmpfs mnt && tar --one-file-system -c . | tar -C /mnt -x |
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mount --make-private -o remount,rw / |
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mount --move dev mnt/dev && mount --move proc mnt/proc |
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mount --move run mnt/run && mount --move sys mnt/sys |
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sed -i "/^[^#]/d;" mnt/etc/fstab |
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echo "tmpfs / tmpfs defaults 0 0" >> mnt/etc/fstab |
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cd mnt && mkdir old_root |
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mount --make-private / |
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sleep 2 |
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echo "Changing the root mount..." |
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unshare -m |
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pivot_root . old_root |
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sleep 5 |
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echo "Starting SSH on 1022..." |
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iptables -I INPUT -p tcp -m state --state NEW -m tcp --dport 1022 -j ACCEPT |
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nohup /usr/sbin/sshd -D -p 1022 > /dev/null 2>&1 & |
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EOL |
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echo -e "\nFlashing the Debian image..." |
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ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -p 1022 root@$1 -T <<'EOL' |
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echo "Arch is $(arch)..." |
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IMAGEMIRROR="https://cloud.debian.org/images/cloud/bookworm" |
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IMAGEVERSION="debian-12-genericcloud" |
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IMAGEBUILD="20240701-1795" |
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for i in agetty dbus-daemon atd iscsid rpcbind unattended-upgrades; do pkill $i; done; kill 1; umount -l /dev/sda1 |
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if [ $(arch) = "x86_64" ] |
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then curl -L $IMAGEMIRROR/$IMAGEBUILD/$IMAGEVERSION-amd64-$IMAGEBUILD.tar.xz | tar -OJxvf - disk.raw | dd of=/dev/sda bs=1M; |
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elif [ $(arch) = "aarch64" ] |
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then curl -L $IMAGEMIRROR/$IMAGEBUILD/$IMAGEVERSION-arm64-$IMAGEBUILD.tar.xz | tar -OJxvf - disk.raw | dd of=/dev/sda bs=1M; |
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else |
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echo Unsported architecture! |
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fi |
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sleep 5 |
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echo "Syncing changes to the block storage..." |
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sync |
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sleep 5 |
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echo "Rebooting into Debian!" |
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nohup sh -c 'echo "1" > /proc/sys/kernel/sysrq && sleep 5 && echo "b" > /proc/sysrq-trigger' > /dev/null 2>&1 & |
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EOL |
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echo -e "\nWaiting until Debian starts... (3 min)" |
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waittime=180 |
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while [ $waittime -gt 0 ]; do |
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echo -ne "$waittime\033[0K\r" |
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sleep 1 |
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: $((waittime--)) |
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done |
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echo -e "\nAdding temporary SSH-key for Debian root user..." |
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ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -p 22 debian@$1 \ |
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'sudo cat /home/debian/.ssh/authorized_keys | sudo tee /root/.ssh/authorized_keys' |
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echo -e "\nDebian inititialisation..." |
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ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o LogLevel=ERROR -p 22 root@$1 -T <<'EOL' |
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export DEBIAN_FRONTEND=noninteractive |
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echo "deb http://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware |
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deb http://deb.debian.org/debian/ bookworm-updates main contrib non-free non-free-firmware |
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deb http://deb.debian.org/debian/ bookworm-backports main contrib non-free non-free-firmware |
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deb http://security.debian.org/debian-security/ bookworm-security main contrib non-free non-free-firmware" > /etc/apt/sources.list |
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apt-get update && apt-get install -y locales-all |
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rm -rf /root/.ssh/ |
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sync |
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reboot |
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EOL |
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sleep 10 |
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echo -e "\nDone!" |
One thing that OCI does not have is the ability to reinstall the OS, you have to completely remove the "VPS" and try to create it again. Sometimes it can take more than a day to get another VPS created.
I will try, with the little knowledge I have, to find a way to reinstall Debian with the steps you mentioned, I hope I have luck.