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