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