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