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