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