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