Help us improve by sharing your feedback. The best way to handle this limitation is to write your conditional logic in Ruby. The aggregate block is optional, and without it Facter merges hashes with hashes or arrays with arrays. The values of the hash are either the expected fact values or an array of values to compare against. When multiple resolutions are available for a fact, resolutions are evaluated from highest weight value to lowest. Writing powerful conditional statements. A call to Facter.
Iterating over multiple items. How do you feel about the new design? In can be considered similar to env variable of Bash or Linux. Making quick edits to config files. Managing virtual machines with Vagrant.
Puppet 3 Cookbook by John Arundel
The way that Facter decides the issue of resolution precedence is the weight property. Help us improve by sharing your feedback.
This allows you to do something like this:. Email The email address of the user submitting feedback. An optional aggregate block: Using array iterations in templates. Open menu Close menu. Select an element on the page. Passing parameters to classes.
Overview of custom facts with examples – Facter (PE and open source) | Puppet
By default, the weight of a fact is the number of confines for that resolution, so that more specific resolutions take priority over less specific resolutions. If you find that an external fact does not match what you have configured in your facts.
Page rank The page rank or the 1 our of 5 rating a user has given the page. Expand menu Collapse menu. The Facter API gives you a few ways to execute shell commands:. Managing NFS servers and file shares.
Writing facts with simple resolutions Example: While external facts provide a mostly-equal way to create variables for Puppet, they have a few drawbacks:.
Open menu Close menu. We are constantly improving the site and really appreciate your feedback! Each resource has its own facts and in Puppet the user has the wrtiing to build their own custom facts.
Creating custom facts – Puppet 3 Cookbook [Book]
These collection of facts comes with facter out-of-the-box and are referred to as core facts. Drawbacks While external facts provide a mostly-equal way to tacts variables for Puppet, they have a few drawbacks: A block of code, which is responsible for resolving the chunk to a value.
This is a way to compose the content of a structured fact but executing different chunks of code. Managing users with virtual resources. Download Puppet Learning VM. Adding a resource to a node. Using arrays of resources.
If the fact fails to resolve or is not present, Facter returns nil. Your shell command is also a Ruby string, so you need to escape special characters if you want to pass them through. Managing users’ SSH access. Cleaning up old files.