puppet agents fail due to Puppet Master CA issues (workaround)

ISSUE

puppet agent -t

output

Warning: Unable to fetch my node definition, but the agent run will continue:
Warning: SSL_connect returned=1 errno=0 state=error: certificate verify failed: [self signed certificate in certificate chain for /CN=Puppet CA:

Workaround to fix it, based on [Satellite 6] How to regenerate the Puppet CA and Puppet Client certificates for Red Hat Satellite with Puppet4 or Puppet 5

I write this, as I found some of the steps in the article were missing and I found myself in trouble

Some of the steps I added, as they were provided by a fellow customer @johnT

On the server

# service puppet stop
# for i in `puppet cert list --all | cut -d '"' -f2`; do puppet cert clean $i; done
# service puppetserver stop
# rm -rf /etc/puppetlabs/puppet/ssl/*
# puppet master --no-daemonize --verbose  (Wait until you see: "Notice: Starting Puppet master version 5.5.0", then press Ctrl+C)
# service puppetserver start
# service puppet start

On each client

# yum erase puppet -y
# rm -rf /etc/puppetlabs/*
# yum install puppet -y
# echo "server=satellite.example.com" >> /etc/puppetlabs/puppet.conf
# puppet agent -tv
# systemctl enable --now puppet