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