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