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