Install useful packages:
apt install -y micro htop mosh qemu-guest-agent openjdk-21-jdk openjdk-21-jre-headless gcc python3-pip python3.12-venv make libsqlite3-devEnable guest agent in the proxmox environment, and shutdown the machine, then start it up again:
systemctl enable qemu-guest-agent
systemctl status qemu-guest-agent