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