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