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