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