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