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