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