CentOS 7.x Rocks cluster 7.0 Customize compute node during installation

To customer compute node immediately after the OS installer completes use following steps:

Create extend-compute.xml file using:

cd /export/rocks/install/site-profiles/7.0/nodes/
cp -i skeleton.xml extend-compute.xml   #Dont overwrite existing file, if any

Edit 'extend-compute.xml' and inside <post> and </post> enter bash script that should be executed during install. For example

<post>
yum -y install iotop
echo "Configured" > /state/partition1/test.txt
<!-- Do this before <eval shell="python"> section -->
</post>

Rebuild the compute node distribution

cd /export/rocks/install/
rocks create distro

Test the build on a compute node (one where these packages are not installed yet)

rocks set host boot <compute-node-hostname> action=install
ssh <compute-node-hostname> "shutdown -r now"

Refer:

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