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