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