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