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