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