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Configure the Knife Command

We now have to configure the knife command. This command is the central way of communicating with our server and the nodes that we will be configuring. We need to tell it how to authenticate and then generate a user to access the Chef server.

Luckily, we've been laying the groundwork for this step by acquiring the appropriate credential files. We can start the configuration by typing:

knife configure --initial

This will ask you a series of questions. We will go through them one by one:

WARNING: No knife configuration file found
Where should I put the config file? [/home/your_user/.chef/knife.rb]

The values in the brackets ([]) are the default values that knife will use if we do not select a value.

We want to place our knife configuration file in the hidden directory we have been using:

/home/your_user/chef-repo/.chef/knife.rb

In the next question, type in the domain name or IP address you use to access the Chef server. This should begin with https:// and end with :443:

https://server_domain_or_IP:443

You will be asked for a name for the new user you will be creating. Choose something descriptive:

Please enter a name for the new user: [root] station1

It will then ask you for the admin name. This you can just press enter on to accept the default value (we didn't change the admin name).

It will then ask you for the location of the existing administrators key. This should be:

/home/your_user/chef-repo/.chef/admin.pem

It will ask a similar set of questions about the validator. We haven't changed the validator's name either, so we can keep that as chef-validator. Press enter to accept this value.

It will then ask you for the location of the validation key. It should be something like this:

/home/your_user/chef-repo/.chef/chef-validator.pem

Next, it will ask for the path to the repository. This is the chef-repo folder we have been operating in:

/home/your_user/chef-repo

Finally, it will ask you to select a password for your new user. Select anything you would like.

This should complete our knife configuration. If we look in our chef-repo/.chef directory, we should see a knife configuration file and the credentials of our new user:

ls ~/chef-repo/.chef
admin.pem  chef-validator.pem  knife.rb  station1.pem
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Rajesh Kumar

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Total, Over 12 years of extensive experience in the Software Configuration Management domain having depth knowledge of DevOps, Continuous Integration and Delivery, Configuration Management, Build and Installer, Release Management and Application Management.

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