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