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