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