Download Puppet 2.7 Cookbook by John Arundel PDF

By John Arundel

Build trustworthy, scalable, safe, high-performance platforms to totally make the most of the ability of cloud computing
* indicates you ways to take advantage of a hundred strong complex positive factors of Puppet, with targeted step by step instructions
* Covers the entire renowned instruments and frameworks used with Puppet: Dashboard, Foreman, MCollective, and more
* contains the most recent beneficial properties and updates in Puppet 2.7
* Written in an easy, functional variety through a qualified structures administrator and Puppet professional, each recipe has distinctive step by step directions exhibiting you the precise instructions and configuration settings you need

In Detail

A revolution is coming to IT operations. Configuration administration instruments can construct servers in seconds, and automate your whole community. instruments like Puppet are necessary to take complete benefit of the facility of cloud computing, and construct trustworthy, scalable, safe, high-performance systems.

The e-book takes you past the fundamentals to discover the complete strength of Puppet, exhibiting you intimately easy methods to take on numerous real-world difficulties and functions. At each step it exhibits you precisely what instructions you want to sort, and comprises complete code samples for each recipe.

The ebook takes the reader from a simple wisdom of Puppet to a whole and professional realizing of Puppet's newest and such a lot complex positive aspects, neighborhood most sensible practices, writing nice manifests, scaling and function, and the way to increase Puppet via including your personal companies and resources.

The booklet comprises genuine examples from creation platforms and methods which are in use in the various world's greatest Puppet installations, together with a allotted Puppet structure and a high-performance Puppetmaster resolution utilizing Apache and Passenger.

Explore the ability of Puppet with this sensible advisor to the world's most well liked configuration administration system

What you'll examine from this book
* Make Puppet trustworthy, performant, and scalable
* Produce attention-grabbing studies and data for administration
* comprehend universal mistakes messages and troubleshooting universal difficulties
* deal with huge networks with instruments like Foreman and MCollective
* Use sessions and inheritance to jot down strong Puppet code
* install configuration records and templates for lightning-fast installations
* Use digital machines to construct try out and staging environments, and creation structures on cloud systems equivalent to EC2
* Automate each point of your platforms together with provisioning, deployment and alter management

Approach

This publication is written in a Cookbook variety displaying you ways to establish and extend your Puppet infrastructure. It progresses via certain info at the language and contours, exterior instruments, reporting, tracking, and troubleshooting, and concludes with many particular recipes for coping with well known applications.

Who this booklet is written for

The ebook assumes that the reader already has a operating Puppet deploy and maybe has written a few easy manifests or tailored a few released modules. It additionally calls for a few event of Linux platforms management, together with familiarity with the command line, dossier procedure, and textual content enhancing. No programming adventure is required.

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Additional resources for Puppet 2.7 Cookbook

Example text

You can use puppet cert --generate to do this. How to do it... 1. com Puppet will now generate and sign a client certificate in the name of client1. com. 2. Transfer the three required files; the private key, the client certificate, and the CA certificate, to the new client. pem Transfer these to the corresponding directories on the client, and it will then be authenticated without the certificate request step. conf. "—Anon We all make mistakes; that's why pencils have erasers. Whenever Puppet changes a file on the client, it keeps a backup copy of the previous version.

That kind of error can be hard to see. ff Could not request certificate: Retrieved certificate does not match private key; please remove certificate from server and regenerate it with the current key Either the node's SSL host key has changed, or Puppet's SSL directory has been deleted, or you are trying to request a certificate for a machine with the same name as an existing node. Generally, the simplest way to fix this is to remove Puppet's SSL directory from the client machine (usually this is /etc/puppet/ssl) and run puppet cert --clean on the Puppetmaster.

A common requirement is to apply a certain resource before all others (for example, installing a package repository), or after all others (for example, deploying an application once its dependencies are installed). Puppet's run stages allow you to do this. How to do it… 1. Add the following to your manifest: class install_repos { notify { "This will be done first": } } class deploy_app { notify { "This will be done last": } } stage { "first": before => Stage["main"] } stage { "last": require => Stage["main"] } class { "install_repos": stage => "first" } class { "deploy_app": stage => "last" } 2.

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