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