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