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