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