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