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