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