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