How does hiera work in Puppet?

How does hiera work in Puppet?

Hiera is a built-in key-value configuration data lookup system, used for separating data from Puppet code. Puppet’s strength is in reusable code. Code that serves many needs must be configurable: put site-specific information in external configuration data files, rather than in the code itself.

How do I set up hiera Puppet?

To enable eyaml on the command line and with puppet apply , use sudo /opt/puppetlabs/puppet/bin/gem install hiera-eyaml . Each eyaml hierarchy level needs the following keys: name — A name for this level, shown in debug messages and –explain output. lookup_key — Which backend to use.

How do you use Puppet lookup?

You can log into a Puppet Server node and run puppet lookup with sudo . The most common version of this command is: puppet lookup –node –environment –explain. The puppet lookup command searches your Hiera data and returns a value for the requested lookup key, so you can test and explore your data.

What is hiera-Eyaml?

hiera-eyaml is a backend for Hiera that provides per-value encryption of sensitive data within yaml files to be used by Puppet.

Does Puppet use Yaml?

Place plan files in your module’s ./plans directory, using these file extensions: Puppet plans — . pp. YAML plans — .

Does Puppet use YAML?

What is a Yaml file?

YAML is a data serialization language that is often used for writing configuration files. Depending on whom you ask, YAML stands for yet another markup language or YAML ain’t markup language (a recursive acronym), which emphasizes that YAML is for data, not documents.

How do you use hiera Eyaml?

eyaml file in your VCS repository directory. You can use the eyaml command to input your sensitive data and receive an encrypted block. Next, copy and paste the text from after block: to the end of the block into yoursecure. eyaml file as you would any other Hiera yaml file.

What is Eyaml?

Encrypted yaml, or eyaml, provides a secure key-based facility to encrypt the sensitive data in yaml config files used by Hiera. This tool was designed specifically for managing yaml files with sensitive data. Fortunately, it also works on other config file formats such as dotenv, ini, and generally any text format.

What do you need to know about Hiera in puppet?

Puppet uses Hiera to do two things: 1 Store the configuration data in key-value pairs 2 Look up what data a particular module needs for a given node during catalog compilation More

Where do I put the hieradata file in puppet?

If you have a lot of values for the nginx example and you want to separate them for manageability, you simply can move them to the /etc/puppet/hieradata/environment/ /nginx.yaml file. Finally, as a default, Hiera will check for the value in defaults.yaml at the top of the hieradata directory.

Which is operating system does puppet Hiera use?

For example, if the operating system is Linux then do this with this specific data, if the operating system is windows, then do this with this specific data etc etc. But even that approach is not at all a good one.

Where does the hierarchy search begin in puppet?

The :datadir: is just the path to where the hierarchy search path should begin, and is usually a place within your Puppet configuration. The :hierarchy: section is where the core algorithm of how Hiera does its key/value lookups is defined.