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