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