Install Chef

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DevOps (8 4 Blogs) Become a Certified Professional AWS Global Infrastructure Introduction To DevOps What is DevOps? A Beginner's Guide To Understanding DevOps And Its EvolutionWhat Are Important Pre-Requisites For DevOps Professionals?DevOps in various domains â€" How DevOps solves the problem?DevOps Real Time Scenarios â€" Know What Happens Real TimeWaterfall vs Agile: Which Is Better For You And Why?DevOps vs Agile! Everything You Need To KnowMystery of DevOpsInfrastructure as Code â€" What is it and Why is it it important?Linux commands in DevOps: Must Know For Every DevOps ProfessionalDevOps Tutorial : Introduction To DevOpsTop 10 DevOps Tools You Must Know In 2020Understanding DevOps Tools Development, Testing Deployment Technologies Involved In DevOps Git 6 Simple Steps for Installing Chef On CentOS Last updated on May 22,2019 18.2K Views Saurabh Saurabh is a technology enthusiast working as a Research Analyst at Edureka.... Saurabh is a technology enthusiast working as a Re search Analyst at Edureka. His areas of interest are - DevOps, Artificial Intelligence, Big Data and...2 Comments Bookmark 2 / 3 Blog from Chef Become a Certified Professional Install ChefAre you looking forward to become a Certified Professional in DevOps? Well, if the answer is yes, let me tell you that you need to master in all top tools of DevOps. One such tool out of the lot is Chef. So this blog is a guide on how to install Chef on a CentOS machine. Installing Chef is like a cake walk, you just have to execute a few commands.Chef has three major components:WorkstationServerNodesFor demonstration purpose I will be using only one Node. There can be hundredsof Nodes managed by one Chef Server. I am using two CentOS Virtual Images one for Workstation and other for a Node. For Server, I will use the hosted version of Chef Server (on a cloud) available at manage. chef. myselfFollowing are the steps to install Chef:Install Chef DK (Development Kit) on Chef WorkstationSetupa Chef S erverCreate a Recipe or a Cookbook/ download a Cookbook from Chef Supermarketin WorkstationUpload a Cookbook on the Chef ServerConnect ANode To The Chef ServerDeploy the Cookbook from the Server to the Node1. Install Chef DK (Development Kit)In my Chef Workstation I will install Chef DK.Chef DK is a package that contains all the development tools that you will need when coding Chef. Here is the link to download Chef DK.Here, choose the operating system that you are using. I am using CentOS 6.8. So, I will click on Red Hat Enterprise Linux.Copy the link according to the version of CentOS that you are using. I am using CentOS 6, as you can see that I have highlighted in the above screenshot.Go to your Workstation terminal and download the Chef DK by using wget command and paste the link.Execute this command: wget https://packages.chef.io/stable/el/6/chefdk-1.0.3-1.el6.x86_64.rpm The package is now downloaded.Now I will install this package using rpm.Execute this: rpm -ivh chefdk-1.0.3-1.el6.x86_64.rpm 2. SetupChef ServerI will use the hosted version of Chef Server on the cloud but you can use a physical machine as well.This Chef-Server is present at manage.chef.ioOver here, create an account if you dont have one. Once you have created an account, sign-in with your login credentials.This is how Chef Server looks like.If you are signing in for the first time, the very first thing that you will be doing is creating an organization. Organization is basically a group of Machines that you will be managing with the Chef Server.First, I will go to the administration tab. Over there, I have already created an organization called edu. So I need to download the starter kit in my Workstation. This starter kit will help you to push files from the Workstation to the Chef Server. Click on the settings icon on the right hand side and click on Starter Kit.Now you will get an option to download the Starter Kit. Just click on it to download the Starter Kit zip file.Move this file to your root direct ory. Now unzip this file by using unzip command in your terminal. You will notice that it includes a directory called chef-repo.Execute this: unzip chef-starter.zip Now move this starter kit tothe cookbook directory in chef-repodirectory.Execute this: mv starter /root/chef-repo/cookbooks 3. Download ACookbook From Chef Supermarket In WorkstationChef Cookbooks are available in the Cookbook Supermarket, we can go to the Chef Supermarket. Download the required Cookbooks from supermarket.chef.io. Im downloading one of the Cookbook to install Apache from there.Execute this: cd chef-repo knife cookbook site download learn_chef_httpd There is Tar ball downloaded for the Apache Cookbook. Now, I willextract the contents from this downloaded Tar file. For that, I will use tar command.Execute this: tar -xvf learn_chef_httpd-0.2.0.tar.gz All the required files are automatically created under this Cookbook. There is no need to make any modifications. Lets check the Recipe description inside my recipe folder.Execute this: cd /root/chef-repo/learn_chef_httpd/recipes cat default.rb Now, I will just upload this cookbook to my Chef Server as it looks perfect to me.4. Upload A Cookbook InThe Chef ServerIn order to upload the Apache Cookbook that I have downloaded, first move this learn_chef_httpd file to the Cookbooks folder in the chef-repo. Then change your directory to cookbooks.Execute this: mv /root/chef-repo/learn_chef_httpd /root/chef-repo/cookbooks cd /root/chef-repo/cookbooks Now in this directory, execute the below command to upload the Apache Cookbook:Execute this: knife cookbook upload learn_chef_httpd Verify the Cookbook from the Chef Server Management console. In the policy section, you will find the Cookbook that you have uploaded. Refer the screenshot below:Now, our final step is to add Chef Node. Weve setup a Workstation, a Chef Server and we need to add our Nodesto the Chef Server for automation.5. Connect ANode To The Chef ServerThe terminal color of my Node machine is different from the Workstation so that you will be able to differentiate between both.I just need the IP address of my Node for that I will execute the below command in my Node machine.Execute this: ifconfig I will add my Chef Node to the Server by executing Knife Bootstrap command in which I will specify the IP address of The Chef Node and its name. Execute the command shown below:Execute this: knife bootstrap 192.168.56.102 --ssh-user root --ssh-password edureka --node-name chefNode This command will also initialize the installation of the Chef-Client in the Chef Node. You can verify it from the CLI on the Workstation using the knife command,as shown below:Execute this: Knife node list You can also verify from the Chef Server. Go to the nodes tab in your Server Management Console, here you will notice that the node that you have added is present. Refer the screenshot below:6. Deploy The Cookbook From The Server To The NodeLets see how we can add a Cookbook to the Node and manage its Run list from the Chef Server. Run List describes the order in which the Cookbooks should be executed. As you can see in the screenshot below, click the Actions tab and select the Edit Run list option to manage the Run list.In the Available Recipes, you can see our learn_chef_httpd Recipe, you can drag that from the available packages to the current Run List and save the Run list.Now login to your Node and just run chef-client to execute the Run List.Execute this: chef-client Congratulations! youhave successfully installed Chef and deployed Apache from your Chef Serverto the Node.I hope you were able to follow me through the installation process of Chef and by now Chef must be up and running in your machine.If you found this blog on InstallChef relevant,check out theDevOps training by Edureka,a trusted online learning companywith a network of more than250,000satisfied learnersspread acrossthe globe. 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