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