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