Lustre 2.10.x dkms usage

get the src for the lustre-client-dkms package from the:

https://build.hpdd.intel.com/job/lustre-b2_10/arch=x86_64,build_type=client,distro=el7,ib_stack=inkernel/

1) rpmbuild --rebuild --without servers lustre-client-dkms-2.10.2_RC1-1.el7.src.rpm
2) yum install /root/pmbuild/RPMS/noarch/lustre-client-dkms-2.10.2_RC1-1.el7.centos.noarch.rpm
It will rebuild the modules for the active kernel with the following commands:
 

/bin/bash /sbin/dkms build -m lustre-client -v 2.10.2_RC1 -k 3.10.0-693.5.2.el7.x86_64

PS troubleshooting
if dkms  status shows something like this:

 dkms status
lustre-client, 2.10.2_RC1, 3.10.0-693.5.2.el7.x86_64, x86_64: installed (original_module exists) (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!) (WARNING! Diff between built and installed module!)

1) dkms --force remove  -m  lustre-client -v 2.10.2_RC1 -k 3.10.0-693.5.2.el7.x86_64
2) rm -fr  /lib/modules/3.10.0-693.5.2.el7.x86_64/extra/lustre
3) find and remove manually the module leftovers: find /lib/modules/| grep lustre
4) dkms --force install -m  lustre-client -v 2.10.2_RC1 -k 3.10.0-693.5.2.el7.x86_64

Deleting the funny 192.168.122.xxx network from CentOS 7.4

In order to stop unnecessary interface on the VM:
 
yum install -y libvirt-client
systemctl start  libvirtd 
virsh net-destroy default
systemctl stop  libvirtd 
systemctl disable  libvirtd