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