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