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