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