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