CHEF INFRASTRUCTURE AUTOMATION COOKBOOK PDF
Contribute to jbl/devsoft development by creating an account on GitHub. Chef Infrastructure Automation Cookbook, Second Edition. This book takes you through covering the various artifacts of Chef and explains the techniques of. For systems administrators and developers this book could revolutionize your cloud and server infrastructure through automation. Packed with.
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Chef provides a framework for fully automating infrastructure, and has some .. declared in cookbook metadata, similar to packaging system. Infrastructure Automation with Chef. Speaker: Classic infrastructure & operations are major efforts to run. 14 . Chef Cookbook Examples. CouchDB. Java. Register Free To Download Files | File Name: Chef Infrastructure Automation Cookbook PDF. CHEF INFRASTRUCTURE AUTOMATION COOKBOOK.
The main pieces that influence thechef clientt behavior as of 0. The version field is important with the introduction of environments in 0. It allows you to pin an environment to a specific version of a cookbook. This way your production environment can remain on a tested version of your configuration while you are improving your development version.
Versions have to be managed by hand right now. When you use knife to upload a cookbook to the Chef server it will replace any files or recipes it finds that were uploaded with the same version number.
You can prevent yourself and others from overwriting a given version of a cookbook by passing knife the --freeze flag. The depends property specifies what other cookbooks are required on the client for this cookbook to work. The second depends clause in the example includes a version number.
This is optional but will allow you to keep major changes to your cookbooks from breaking others if you manage your version numbers well. Borrowing and Sharing Cookbooks One of the greatest assets of any open-source project is the way the community shares knowledge.
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Much of the community uses Git as version control for their Chef repository, so knife provides the knife cookbook site install command that downloads the cookbook and places it in a vendor branch within your Git repository and then merges it into the master branch. This allows local modifications to persist even if you upgrade the underlying cookbook.
For those who use Subversion or other version control system, you can use the knife cookbook site download command to bring down atar balll that you can unpack where you wish. Likewise you may spend hours building a cookbook and want to share it with the community.
Please do! You can either make a tgz file of your cookbooks directory or use the knife cookbook site share command to upload it to the community site. When you develop an interesting cookbook, consider sharing it with the community.
Also consider placing the source on GitHub or a similar public service so that others can contribute. You can override a file in this default directory with a version that is host specific, OS and version specific, or just OS specific. The utility versus the complexity of the file specificity system is in discussion in the community at the moment. There are clearer ways to specify template and file resources like in the resource itself , so I caution users to not make heavy use of this functionality.
It is more likely to confuse those that come after you. Behind each resource are one or more providers that tell Chef how to execute the actions you require against a certain type of system. For instance, the package resource has providers for yum, apt, gems, and more. Log The Log resource is the simplest resource there is. All it does is print a logging message at the level you provide defaulting to INFO.
INFO: This is a message from chef You can specify the level you want the message to be logged at with the level parameter.
These multiple providers allow the single package resource to be used on most major UNIX-based operating systems. The node object includes all the data discovered by the Ohai application. Ohai sets the platform element to the name of the distribution. Directory The directory resource lets us create, remove, and manage the permissions on directories. In defining your resources, you have the full power of Ruby available to you.
For instance, this allows you to loop through entries in an array to build a set of directories. File The file resource allows you to manage the permissions and ownership of files on the node, with the option to pass content from inside your recipe. The parameters for a file are the same as a directory with a couple of exceptions. It will not back up the file if it changes. Chef uses SHA for its checksums, but only the first characters of the hash are usually needed to ensure consistency.
An additional cookbook attribute is available to fetch files from cookbooks other than the one you are currently running. As a rule, do not store large binaries in Chef. It can handle it, but the side effects larger database size, slower repository checkouts make it less desirable than many alternatives such as a package repository, Templates Chef suppotemptingting text based configuration files using ERB.
In its simplest form, Ruby code is wrapped in special brackets. A similar tag is used to put a value into the resulting file. ERB will parse the statement included in that tag and replace the tag with the return value. By combining these elements with regular Ruby conditionals and flow control, we can create templates for even complex configuration.
Let us stick with the simple case for now, a resolv. This shows the first way Chef maketemptingng a little easier.
The second piece is a loop over each item in an array called nameservers. The template resource has a variables attribute that you can pass other data to for use in your templates without inserting it into the node object itself. You may have noticed that the each do and end statements have an extra hyphen attached to the end tag.
Chef Infrastructure Automation Cookbook
This prevents the newline character outside the tag from being printed, keeping you from having extra blank lines in your template. Lets take a quick look at how to declare the template resource for the file above. Then we add a variables attribute that assigns an array to the symbol name servers. This array will be made available, as you saw in our template, as the variable nameservers.
Services Once the package is installed and you have put your configurations either as files or templates in place, it is time to manage the services you intend to provide. Again, Chef providers are available for most of the major service management schemes. Execute So far we can manage files, install packages, and restart services. But sometimes you just need to run a real command. Perhaps it is an installer for your monitoring system or to add records to an LDAP server.
Script Bash, csh, Perl, Python, Ruby The script resource is an extension of the execute resource, supporting all of parameters of the latter, while allowing you to pass a block of commands inside the resource. This works well for running a custom compile of an application that you do not have a package for or for running a set of tasks every time the Chef client runs.
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Attributes extend the node model just like Ohai does but are set or changed inside of cookbooks and roles. Once again, the attributes file is just Ruby with some shortcuts built in. Raspberry Pi. Virtual and Augmented Reality. NET and C. Cyber Security. Full Stack. Game Dev. Git and Github. Technology news, analysis, and tutorials from Packt. Stay up to date with what's important in software engineering today.
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You don't have anything in your cart right now. Irrespective of whether you're a systems administrator or a developer, if you're sick and tired of repetitive manual work and not knowing whether you may dare to reboot your server, it's time for you to get your infrastructure automated. Chef Infrastructure Automation Cookbook has all the required recipes to configure, deploy, and scale your servers and applications, irrespective of whether you manage 5 servers, 5, servers, or , servers. Chef Infrastructure Automation Cookbook is a collection of easy-to-follow, step-by-step recipes showing you how to solve real-world automation challenges.
Learn techniques from the pros and make sure you get your infrastructure automation project right the first time. Chef Infrastructure Automation Cookbook takes you on a journey through the many facets of Chef. It teaches you simple techniques as well as fully fledged real-world solutions.
By looking at easily digestible examples, you'll be able to grasp the main concepts of Chef, which you'll need for automating your own infrastructure. Instead of wasting time trying to get existing community cookbooks running in your environment, you'll get ready made code examples to get you started.
After describing how to use the basic Chef tools, the book shows you how to troubleshoot your work and explains the Chef language. Then, it shows you how to manage users, applications, and your whole cloud infrastructure. The book concludes by providing you additional, indispensable tools and giving you an in-depth look into the Chef ecosystem.
Chef Infrastructure Automation Cookbook will help you learn the techniques of the pros by walking you through a host of step-by-step guides to solve real-world infrastructure automation challenges. Matthias Marschall is a Software Engineer "made in Germany".
His four children make sure that he feels comfortable in lively environments, and stays in control of chaotic situations. A lean and agile engineering lead, he's passionate about continuous delivery, infrastructure automation, and all things DevOps. In recent years, Matthias has helped build several web-based businesses, first with Java and then with Ruby on Rails.
He quickly grew into system administration, writing his own configuration management tool before migrating his whole infrastructure to Chef in its early days. In , he started a blog http: There, they have shared their ideas about DevOps since the early days of the continually emerging movement. You can find him on Twitter as mmarschall. Matthias holds a Master's degree in Computer Science Dipl. When not writing or coding, Matthias enjoys drawing cartoons and playing Go.
He lives near Munich, Germany. Sign up to our emails for regular updates, bespoke offers, exclusive discounts and great free content.
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Features Free Trial. Search for eBooks and Videos. Chef Infrastructure Automation Cookbook. For systems administrators and developers this book could revolutionize your cloud and server infrastructure through automation. Are you sure you want to claim this product using a token?
Matthias Marschall August Quick links: What do I get with a Packt subscription? What do I get with an eBook?Deep Learning. The node object includes all the data discovered by the Ohai application. Section 9 Advanced Chef So now you have an idea how to build your cookbooks. Users and Applications. All it does is print a logging message at the level you provide defaulting to INFO.
News Become a contributor. Most environments start with a base or common role that holds the pieces that apply to every node and then grow to include individual application. The utility versus the complexity of the file specificity system is in discussion in the community at the moment.
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