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