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