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