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