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