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