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