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