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