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