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