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