Download Managing Infrastructure with Puppet by James Loope PDF

By James Loope

Get begun with Puppet, and find out how this well known configuration administration framework is helping you automate your servers. This concise creation exhibits you the way to take advantage of Puppet’s instruments and templates to prepare and execute configuration plans on Linux, Unix, and home windows servers. via code samples and real-world examples, you’ll methods to deal with swimming pools of servers and digital situations, and the way to manage entry keep an eye on. If you’re new to Puppet, yet conversant in structures management and Ruby language fundamentals, this booklet is the best solution to commence utilizing this open resource framework.

* examine Puppet basics, together with its occur syntax and integrated features
* shop configurations in a significant situation with PuppetMaster, and outline which configurations observe to which nodes
* construct a framework to create person debts in preference to LDAP or Kerberos KDC
* practice strategies to execute and deal with server configurations with MCollective
* Use Puppet as an auditing instrument to make sure that configurations are right
* assemble info at the nodes you deal with with the Facter library

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Extra resources for Managing Infrastructure with Puppet

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Com/. There are plenty of great patterns of implementation and organization in these projects, and you may even come across an out-of-the-box solution to a problem of your own. Templates | 19 CHAPTER 3 Who Needs LDAP? ” There are many options, including LDAP, Kerberos KDC, and the like, but I disliked each of them for one reason or another. Centralized auth is prone to failure and proper redundancy is painful to manage. Often password auth is well managed, but key distribution is difficult, or vice versa.

Lookupvar('externalclass::myvariable'). Injecting variables into config file templates like this will let us drastically reduce the number of individual configuration files we need to maintain. org/stdlib/libdoc/erb/rdoc/, and there are plenty of online tutorials on complex templating. I’ve tried to give you a few real-world examples of how to implement the various features of Puppet, but the applications are vast and varied. com/. There are plenty of great patterns of implementation and organization in these projects, and you may even come across an out-of-the-box solution to a problem of your own.

Class-scoped variables are also available publicly by qualifying their parent class: class classone { $variableone = 'test' $variabletwo = [ 'foo', 'bar', 'baz', 'qux' ] $variablethree = { foo => 'bar', baz => 'qux' } } class classtwo { $variableone = $classone::variableone $variabletwo = $classone::variabletwo[1] $variablethree = $classtwo::variablethree[foo] } This can be useful in some circumstances, but it is somewhat difficult to ensure predictable behavior, as the values are dependent on the order of evaluation of the two classes.

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