These slides are containing a brief intro to chef software and will let you know the power of chef, and how to use it and make deployment automatic.

1. Arpit Suthar
Software Consultant
Knoldus Software LLP
Arpit Suthar
Software Consultant
Knoldus Software LLP

2. Our 5 Course meal for today :)
➔ What is chef
➔ How chef works?
➔ How to use it?
➔ Chef alternatives
➔ Lets cook :)

3. What is chef
Chef is a powerful automation platform that transforms
complex infrastructure into code, Chef automates how
applications are configured, deployed, and managed across
your network, no matter its size.

4. Why chef?

5. Chef Components
➔ Recipe
➔ Cookbook
➔ Node
➔ Chef-client
➔ Workstation
➔ Chef-server
➔ Chef Supermarket
➔ Knife

6. What is the problem???What is the problem???

7. The real problem is STATE.The real problem is STATE.

12. How to use chef?How to use chef?

13. ➔ Download Chef Development Kit
(https://downloads.chef.io/chef-dk/)
➔Create a repo eg. chef-repo (mkdir learn-chef)
➔Create a folder to keep cookbooks (mkdir cookbooks)
➔Now create a cook book eg. (chef generate cookbook learn_chef)
➔ Download Chef Development Kit
(https://downloads.chef.io/chef-dk/)
➔Create a repo eg. chef-repo (mkdir learn-chef)
➔Create a folder to keep cookbooks (mkdir cookbooks)
➔Now create a cook book eg. (chef generate cookbook learn_chef)
How to use chef?How to use chef?

15. Cont.
Now there is a question where will I upload my recipes (chef server)
➔ Go to https://manage.chef.io/ and create a account on chef.io
➔ Create an organization
➔ Configure your workstation to communicate with the Chef server with knife
➔ knife requires two files to communicate with the Chef server – an RSA private key and a
configuration file.
➔ Every request to the Chef server is authenticated through an RSA public key-pair. The Chef
server holds the public part; you hold the private part.
➔ The configuration file is typically named knife.rb. It contains information such as the Chef
server's URL, the location of your RSA private key, and the default location of your cookbooks.
➔ The next step is to create the ~/learn-chef/.chef directory and add your RSA private key and
knife configuration files. Eg mkdir ~/learn-chef/.chef

16. Cont.
➔ Generate your knife configuration file
➔ From the command line, copy knife.rb to your ~/learn-chef/.chef directory
eg. cp ~/Downloads/knife.rb ~/learn-chef/.chef

17. Cont.
➔ Generate your RSA private key file

18. Cont.
➔ From the command line, copy knife.rb to your ~/learn-chef/.chef directory
eg. cp ~/Downloads/arpitkulria.pem ~/learn-chef/.chef

19. ➔ Run these commands to download the cookbook from Chef Supermarket and
extract it to your ~/learn-chef/cookbooks directory.
$ knife cookbook site download java
➔ In cookbook dir run this command
$ tar -zxvf java-1.39.0.tar.gz
➔ Upload your cookbook to the Chef server
$ knife cookbook upload java
➔ After uploading you can see your cookbooks on https://manage.chef.io/ under
policy tab
Cont.

20. ➔ You can see all the uploaded cookbooks by command
➔ $ knife cookbook list
Cont.

21. ➔ Set up an Ubuntu server, called a node, and prepare your node to be configured by
Chef remotely from your workstation is called bootstrapping a node
We will be doing this on virtual machine
For that you have to download virtual machine from here
➔ and vagrant from here
The next step is to download a base virtual machine image, called a box. Here's how to
download an Ubuntu 14.04 box
$ vagrant box add ubuntu-14.04 http://opscode-vm-
bento.s3.amazonaws.com/vagrant/virtualbox/opscode_ubuntu-14.04_chef-
provisionerless.box
Get a node to bootstrap

22. ➔ Run these commands to bring up an Ubuntu 14.04 instance.
$ vagrant init ubuntu-14.04
$ vagrant up –provider=virtualbox
➔ Now we can connect to our virtual instance by
$ vagrant ssh
➔ If you are using a real instance then you can follow steps from here
➔ Bootstrap the node by
$knife bootstrap localhost --ssh-port PORT --ssh-user vagrant --sudo
--identity-file IDENTITY_FILE_LOCATION --node-name node1 --run-list
'recipe[java]'
Cont.

23. ➔ Now that your updated cookbook is on the Chef server, you can run chef-client on your
node. The chef-client command pulls from Chef server the latest cookbooks from the
node's run-list and applies the run-list to the node.
➔ On virtual machine we can do this by
$ knife ssh localhost --ssh-port PORT 'sudo chef-client' --manual-list --ssh-user vagrant
--identity-file IDENTITY_FILE_LOCATION
Run the cookbook on your node

24. Chef alternatives
➔ Puppet
➔ Ansible
➔ Salt
➔ Rundeck

25. Lets cook :)Lets cook :)

26. Questions and Answers.getOrElse(“You'll get ASAP”)Questions and Answers.getOrElse(“You'll get ASAP”)

27. Thank youThank you

28. ReferencesReferences
● https://www.chef.io/
●http://www.slideshare.net/JoshPadnick/introduction-to-chef-autom
●http://www.slideshare.net/jweiss/infrastructure-automation-withch
● https://www.chef.io/
●http://www.slideshare.net/JoshPadnick/introduction-to-chef-autom
●http://www.slideshare.net/jweiss/infrastructure-automation-withch