还是之前那个问题，yum安装的时候报错
yum -y install net-snmp net-snmp-devel curl-devel java-1.8.0-openjdk java-1.8.0-openjdk-devel OpenIPMI-devel libssh2-devel
报错信息是
Error: Package: rpm-devel-4.11.3-25.el7.x86_64 (mnt) Requires: rpm-libs(x86-64) = 4.11.3-25.el7 Installed: rpm-libs-4.11.3-32.el7.x86_64 (@rhel7) rpm-libs(x86-64) = 4.11.3-32.el7 Available: rpm-libs-4.11.3-25.el7.x86_64 (mnt) rpm-libs(x86-64) = 4.11.3-25.el7 Error: Package: rpm-devel-4.11.3-25.el7.x86_64 (mnt) Requires: rpm-build-libs(x86-64) = 4.11.3-25.el7 Installed: rpm-build-libs-4.11.3-32.el7.x86_64 (@rhel7) rpm-build-libs(x86-64) = 4.11.3-32.el7 Available: rpm-build-libs-4.11.3-25.el7.x86_64 (mnt) rpm-build-libs(x86-64) = 4.11.3-25.el7 Error: Package: rpm-devel-4.11.3-25.el7.x86_64 (mnt) Requires: rpm = 4.11.3-25.el7 Installed: rpm-4.11.3-32.el7.x86_64 (@rhel7) rpm = 4.11.3-32.el7 Available: rpm-4.11.3-25.el7.x86_64 (mnt) rpm = 4.11.3-25.el7 Error: Package: rpm-libs-4.11.3-25.el7.i686 (mnt) Requires: rpm = 4.11.3-25.el7 Installed: rpm-4.11.3-32.el7.x86_64 (@rhel7) rpm = 4.11.3-32.el7 Available: rpm-4.11.3-25.el7.x86_64 (mnt) rpm = 4.11.3-25.el7 You could try using --skip-broken to work around the problem ** Found 5 pre-existing rpmdb problem(s), 'yum check' output follows: libselinux-devel-2.5-11.el7.x86_64 has missing requires of libselinux(x86-64) = ('0', '2.5', '11.el7') libselinux-utils-2.5-11.el7.x86_64 has missing requires of libselinux(x86-64) = ('0', '2.5', '11.el7') pam-1.1.8-22.el7.i686 has missing requires of libselinux.so.1 systemd-libs-219-57.el7.i686 has missing requires of libselinux.so.1 zlib-1.2.7-17.el7.x86_64 is a duplicate with zlib-1.2.7-15.el7.i686
rpm -qa|grep zlib的时候有两个版本，卸载旧的版本之后，出现如题报错，我就纳闷了，不是有这个包吗
再次查看
# rpm -qa|grep zlib zlib-1.2.7-15.el7.i686 zlib-devel-1.2.7-17.el7.x86_64
版本也在，按照网上说的重新安装是不可能了，查找这个文件
# find / -name libz.so.1 /usr/lib/libz.so.1 /usr/local/lib/libz.so.1
libz.so.1文件还在，我之前编译安装过zlib
所以做个软链接就好了
ln -s /usr/local/lib/libz.so.1 /lib64/libz.so.1