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