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