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