apt install software-properties-common apt-transport-https ca-certificates
add-apt-repository ppa:linbit/linbit-drbd9-stack
ls -alh /etc/apt/sources.list.d/
#vi /etc/apt/sources.list.d/linbit-ubuntu-linbit-drbd9-stack-jammy.list
#apt update
apt install linux-headers-`uname -r`
apt install drbd-dkms drbd-utils