based on the check results you sent, it looks like something went wrong during puppet agents starting on secondary nodes…
Please, do the following:
run “yum erase puppet” on all your nodes
run “yum erase hmc” on your HMC node
reboot all 4 nodes
run “yum install hmc” on your HMC node
run “rm -rf /var/log/hmc/*; rm -rf /var/log/puppet*” on all your nodes
run “service hmc start” on your HMC node
then connect to HMC UI and run installation again.
Let us know about results.
If it still failed, then we will need to look closer to logs.