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