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