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