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