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