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