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