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