[mshaik@server ~]$ sudo yum install gem

[mshaik@server ~]$ sudo gem install yaml-lint

[mshaik@server ~]$ yaml-lint /etc/puppetlabs/code/environments/production/hieradata/common.yaml
Checking the content of [“/etc/puppetlabs/code/environments/production/hieradata/common.yaml”]
File : /etc/puppetlabs/code/environments/production/hieradata/common.yaml, Syntax OK
Done.