ubuntu 도커 레지스트리 ovs libvirt ceph nvidia-smi libvirt-vagrant kubeadm vagrant-libvirt ovpn localGPT jaeger-ceph x509 yt-dlp 쿠버네티스 인증서 리눅스설정 klosedstack 도커 nvcc bpf_trace_printk openvSwitch uprobe vagrant BPF docker net-scripts bind9 dns ceph-osd ebpf