Hiera Eyaml Error - Cannot load backend eyaml: no such file to load -- hiera/backend/eyaml_backend

[vishc...@gmail.com]

We installed hiera-eyaml rubygem as the root user on the Puppet Master node to encrypt/decrypt our passwords.

# /opt/puppetlabs/bin/puppetserver gem install hiera-eyaml --no-doc --no-ri --verbose
# /opt/puppetlabs/puppet/bin/gem install hiera-eyaml --no-doc --no-ri --verbose

eyaml command seems to work fine on the commandline to encrypt/decrypt passwords and also edit the *.yaml files containing the passwords

# /opt/puppetlabs/puppet/bin/eyaml

Our Hiera file : 

:backends:
 - eyaml
 - yaml

:eyaml:
 :datadir: "/etc/puppetlabs/code/environments/%{environment}/hieradata"
 :pkcs7_private_key: /etc/puppetlabs/puppet/eyaml-keys/%{environment}/%{::zone}/private_key.pkcs7.pem
 :pkcs7_public_key: /etc/puppetlabs/puppet/eyaml-keys/%{environment}/%{::zone}/public_key.pkcs7.pem
 :cache_decrypted: false
 :extension: 'yaml'

:yaml:
 :datadir: "/etc/puppetlabs/code/environments/%{environment}/hieradata"

:hierarchy:
 - "environments/%{::environment}/%{::zone}_secure"
 - "environments/%{::environment}/%{::zone}"
 - "environments/%{::environment}/%{::environment}"
 - "roles/%{::role}"
 - "common"
 - "versions/artifact-versions"

Note : zone and role are our external facts

We also restarted PuppetMaster and reinstalled hiera-eyaml. We have the same issue.

PuppetMaster is unable to decrypt the passwords during a puppet agent run for us . It produces the following error :

[puppetserver] Puppet Evaluation Error: Error while evaluating a Function Call, Cannot load backend eyaml: no such file to load --
hiera/backend/eyaml_backend at /etc/puppetlabs/code/environments/production/manifests/site.pp:2:10 on node

Any ideas?

I have enclosed the below version information that we use :  

Puppet Version : 4.7.0

pe-puppetserver-2016.4.0.1006

pe-puppet-enterprise-release-2016.4.2.0

puppet-agent-1.7.1

64-bit, RHEL 7.3 (Maipo)

# /opt/puppetlabs/bin/puppetserver gem list --local | grep -E "(eyaml|trollop|highline)"
hiera-eyaml (2.1.0)
highline (1.6.21)
trollop (2.1.2)

# /opt/puppetlabs/puppet/bin/gem list --local | grep -E "(eyaml|trollop|highline)"
hiera-eyaml (2.1.0)
highline (1.6.21)
trollop (2.1.2)

# /opt/puppetlabs/puppet/bin/ruby --version
ruby 2.1.9p490

# /opt/puppetlabs/puppet/bin/gem --version
2.2.5

[vishc...@gmail.com]

We rebooted the PuppetMaster. It did not come up!....

The infrastructure team built us a new PuppetMaster VM.

Hiera-Eyaml works fine now.