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