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