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