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