rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
解决办法在rpm 语句后面加上 --force --nodeps就可以了
rpm -ivh zlib-devel-1.2.7-19.el7.x86_64.rpm --force --nodeps
打一些基础的命令包
yum install -y --downloadonly --downloaddir=/opt tree nmap sysstat lrzsz telnet bash-completion bash-completion-extras vim lsh-completion-extras vim lsof net-tools rsync ntpdate nfs-utils zlib zlib-devel openssl-devel gcc gcc-c++ autoconf pcre pcre-devel make automake wget httpd-tools tree