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