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