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