chef adding nodes

CREATE ADMIN USER & ORGANIZATION

Create an admin user who will have access to make changes to the infrastructure components in the organization.

The below command will generate the RSA private key automatically & should be saved to a safe location.

Syntax:

chef-server-ctl user-create user_name first_name last_name email password file_name

Run the following command to create an organization and provide the access to the user to whom you want to provide the access.

Syntax:

chef-server-ctl org-create short_name ‘first_organization_name’ --assocaition_user user_name --filename organization-validator.pem

The Starter Kit contains a file named Berksfile that lists your cookbooks. Berkshelf is a tool for managing cookbooks and their dependencies. It downloads a specified cookbook into local storage, which is called the Berkshelf. You can specify which cookbooks and versions to use with your Chef server and upload them. Once you downloaded the starter kit, it contains the necessary configuration files such as the .chef directory, config.rb, ORGANIZATION-validator.pem, and USER.pem under the chef-repo directory.

Login to Chef Manage GUI on the chef server and click the “Administration” tab and select the organization “zcs” from the list. Once the organization is selected, click on “Starter Kit” from the menu on the left side as shown below.

Bootstrap is a process that installs the chef-client on a target system (different platforms such as CentOS, Ubuntu & Windows OS) so that it can run as a chef-client and communicate with a chef server. Installing & configuring a node with chef agent which will start pulling configuration from central chef server, using knife command.

Bootstrap the client node either using the client node’s root user or a user with elevated privileges:

As the node’s root user, change the password to your root password and node name to the desired name for your client node:

*knife bootstrap 192.0.2.0 -x root -P password --node-name node name

As a user with sudo privileges, change username to a node user, password to the user’s password, and node name to the desired name for the client node:

*knife bootstrap 192.0.2.0 -x username -P password --sudo --node-name node name

As a user with key-pair authentication, change username to a node user and node name to the desired name for the client node:

*knife bootstrap 192.0.2.0 --ssh-user username --sudo --identity-file

ADDING A CENTOS NODE 

Now adding the chefnode to the chef server using bootstrap command as follows:

Once the bootstrapping is complete, click the “Nodes” tab a new machine has been listed.