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