Puppet 3 Cookbook

By John Arundel

Build trustworthy, scalable, safe, and high-performance structures to totally make the most of the ability of cloud computing

Overview

  • Use Puppet three to take regulate of your servers and computers, with distinctive step by step instructions
  • Covers all of the well known instruments and frameworks used with Puppet: Dashboard, Foreman, MCollective, and more
  • Teaches you ways to increase Puppet with customized services, kinds, and providers
  • Packed with tips and encouraging rules for utilizing Puppet to automate server builds, deployments, and workflows

In Detail

A revolution is occurring in net operations. Configuration administration instruments can construct servers in seconds, and automate your whole community. instruments like Puppet are necessary to taking complete good thing about the facility of cloud computing, and development trustworthy, scalable, safe, high-performance structures. an increasing number of structures management and IT jobs require a few wisdom of configuration administration, and particularly Puppet.

"Puppet three Cookbook" takes you past the fundamentals to discover the total strength of Puppet, exhibiting you intimately tips to take on various real-world difficulties and purposes. At each step it exhibits you precisely what instructions you must kind, and contains complete code samples for each recipe.

The ebook takes the reader from a uncomplicated wisdom of Puppet to an entire and professional knowing of Puppet’s most recent and so much complex positive aspects, group most sensible practices, writing nice manifests, scaling and function, and lengthening Puppet via including your personal companies and assets. It starts off with suggestions on how you can manage and extend your Puppet infrastructure, then progresses via particular details at the language and contours, exterior instruments, reporting, tracking, and troubleshooting, and concludes with many particular recipes for handling well known applications.

The e-book comprises actual examples from construction platforms and methods which are in use in a few of the world’s greatest Puppet installations, together with a dispensed Puppet structure according to the Git model keep watch over procedure. It covers universal difficulties and blunders and exhibits you ways to troubleshoot your Puppet manifests. You’ll be brought to robust instruments that paintings with Puppet equivalent to Hiera and MCollective. You’ll how you can use objection orientation and periods to write down robust, reusable manifests, and the way to embed Ruby code in templates. You’ll easy methods to expand Puppet with customized source kinds and services. The publication additionally explains coping with Rails functions and databases, construction internet servers, load balancers, high-availability structures with Heartbeat, and plenty of different cutting-edge techniques.

What you'll examine from this book

  • Install and manage Puppet for the 1st time
  • Manage huge networks with instruments like Foreman and MCollective
  • Take keep an eye on of configuration info with Hiera and encrypting secrets and techniques with GnuPG
  • Produce trustworthy, fresh, maintainable code to group criteria with puppet-lint and rspec-puppet
  • Use sessions and inheritance to put in writing strong Puppet code
  • Deploy configuration records and templates for lightning-fast installations
  • Use digital machines to construct try and staging environments, and construction structures on cloud structures corresponding to EC2
  • Automate each element of your platforms together with provisioning, deployment, and alter management

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Certain caution: completely further 'ec2-107-22-22-159. compute-1. amazonaws. com,107. 22. 22. 159' (RSA) to the record of identified hosts. sudo: not able to unravel host cookbook-test --2013-03-15 15:53:44-release-precise. deb http://apt. puppetlabs. com/puppetlabs- Resolving apt. puppetlabs. com (apt. puppetlabs. com)... ninety six. 126. 116. 126, 2600:3c00::f03c:91ff:fe93:711a Connecting to apt. puppetlabs. com (apt. puppetlabs. com)|96. 126. 116. 126|:80... attached. HTTP request despatched, watching for response... two hundred okay size: 3392 (3. 3K) [application/x-debian-package] Saving to: `puppetlabs-release-precise.

So, how can we specify dotfiles for person clients? @ssh_user { 'jamil': key => 'xyz', dotfile => ['bashrc','vimrc'], } now we have handed in an array of strings to the dotfile parameter of our ssh_user definition. this is the place that will get multiplied into source declarations: if $dotfile { $filepath = regsubst($dotfile,'^(. *)$',"/home/${name}/. \\0", 'G') user_dotfile { $filepath: person => $name, } } So, if a cost is handed in for dotfile, we to start with rework it into the entire direction for dotfile (bashrc turns into /home/jamil/.

Sh script clears all current firewall principles, lots the typical and host-specific function records, and tells iptables to log and drop all packets no longer matched through any of its ideas. 185 Servers and Cloud Infrastructure subsequent, the host-specific dossier, which units the machine's private and non-private IP addresses (in case you must discuss with them), and the other variables you will have: dossier { "/etc/firewall/hosts/${::hostname}": content material => "export MAIN_IP=${::ipaddress}\nexport PRIVATE_IP=${::ipaddress_eth1}\n", require => File['/etc/firewall/hosts'], exchange => fake, notify => Exec['run-iptables'], } to really make whatever occur, we'd like an exec source to run the iptables.

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Even supposing NFS is quite outdated know-how, it really is nonetheless popular, so that you will potentially encounter it. easy methods to do it… here is a recipe that would assist you create an NFS server utilizing Puppet and manage shared directories: 1. Run the subsequent command: ubuntu@cookbook:~/puppet$ mkdir -p modules/nfs/manifests 2. Create the dossier modules/nfs/manifests/init. pp with the next contents: # deal with NFS server classification nfs { package deal { 'nfs-kernel-server': verify => put in } 171 Servers and Cloud Infrastructure carrier { 'nfs-kernel-server': make certain => working, permit => actual, hasrestart => real, require => Package['nfs-kernel-server'], } dossier { '/etc/exports.

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