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