By Navin Sabharwal
Automation via Chef Opscode offers an in-depth figuring out of Chef, that's written in Ruby and Erlang for configuration administration, cloud infrastructure administration, process management, and community administration.
specific at directors, experts, and architect, the ebook publications them during the complicated good points of the instrument that are priceless for infrastructure automation, devops automation, and reporting. The booklet presumes wisdom of Ruby and Erlang that are used as reference languages for growing recipes and cookbooks and as a refresher on them to assist the reader get on pace with the move of ebook.
The e-book presents step-by-step directions on set up and configuration of Chef, utilization eventualities of Chef, in infrastructure automation by means of supplying universal situations like digital computer provisioning, OS configuration for Windows, Linux, and Unix, provisioning and configuration of internet servers like Apache besides renowned databases like MySQL.
It extra elaborates at the construction of recipes, and cookbooks, which assist in deployment of servers and functions to any actual, digital, or cloud place, irrespective of the dimensions of the infrastructure.
The books covers complicated featureslike LWRPs and Knife and additionally includes numerous illustrative pattern cookbooks on MySQL, Apache, and CouchDB deployment utilizing a step-by-step approach.
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Extra info for Automation through Chef Opscode
The admin user to be used with knife. • Validation client name: Chef validator client that is automatically created with chef. • Location of validation key. • Path to a chef repository. Install Git (Optional) Git is required on the workstation if we want to clone the repository on github provided by Opscode. If we don’t want to do so, then we can create our own chef repository. This step is an optional, required only if we want to clone the repository provided by chef. chef). So, you need to place the following items in that directory: • The knife configuration file • The chef validator key file • The user to be used to make the API calls Verify the Workstation Configuration To verify that our workstation is properly configured we run a test command.
2. Install the chef client package. 3. pem from to the chef server. 4. Configure knife. 5. Install git (optional). 6. Copy the knife configuration and key files in the chef repository. 7. Verify the workstation configuration. We cover each and every step in detail in the upcoming sections. Identify the Operating System This step mainly includes identifying the OS, which will help us in installing the relevant package on the system. 44 Chapter 4 ■ Workstation Install the Chef Client Package There are two options to install the chef client package.
By default, chef uses Ohai to get the node name and it is the FQDN (fully qualified domain name) of the server. Using the FQDN as the node name, and then allowing Ohai to collect this information during each chef run is the recommended approach and the easiest way to ensure that the names of all nodes across the chef organization are unique. 49 Chapter 5 ■ Nodes Manage Nodes Nodes can be managed in chef using various approaches. They can be managed using knife or using the management console that chef provides.