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