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