Often used

System update

• emerge --sync
• emerge --update --deep --newuse --with-bdeps=y @world
• revdep-rebuild
• emerge --depclean

Hetzner VNC rescue

• https://robot.your-server.de/server
• Rescue -> vKVM 64 bit
• ssh root@<host> -p 47772 -L5901:localhost:5901
• cat /opt/vkvm/vkvm-pass
• vnc localhost:1

 Or in case the os does not boot:

• https://robot.your-server.de/server
• Rescue -> Linux 64 bit
• ssh root@<host>
• cd /mnt
• mkdir root
• mount /dev/md126 root
• cd root
• mount /dev/md127 boot
• mount -t proc proc /mnt/root/proc
• mount --rbind /sys /mnt/root/sys
• mount --rbind /dev /mnt/root/dev
• chroot /mnt/root /bin/bash
• source /etc/profile
• export PS1="(chroot) $PS1"

If the boot setup was forgotten:

• genkernel --install --no-ramdisk-modules --mdadm --disklabel initramfs
• cd /boot
• mv initramfs-genkernel-x86_64-<kernelversion> initramfs-<kernelversion>.img
• grub-mkconfig -o /boot/grub/grub.cfg