This is a guest post from 47Line Technologies
As explained in the last blog post, Chef comprises of three main elements – a server, one or more nodes, and at least one workstation.
- The server acts as a hub that is available to every node. All chef-client nodes will be registered with the server. The server holds all the cookbooks, recipes and policies. Clients communicate with the server to get the right configuration elements from the server and apply it to the nodes.
- The workstation is the development machine from which configuration elements like cookbooks, recipes and policies are defined. Configuration elements are synchronized with the chef-repo and uploaded to the server with knife command.
- Nodes contain chef-client which performs all the infrastructure automation.
In this blog post, we will set up
- Chef server on an AWS EC2 Ubuntu instance
- Workstation on an AWS ECS Ubuntu instance
Chef Server Installation on Amazon EC2 Ubuntu 12.04
Download the Chef server from the main website, and select the appropriate package as shown below
Launch an instance of Ubuntu Server 12.04 LTS (PV) – ami-3c39686e (64-bit) in your AWS account and SSH to the server with the key file and username ubuntu
# switch to home folder cd ~ # Download the Chef Server Package wget https://opscode-omnibus-packages.s3.amazonaws.com/ubuntu/12.04/x86_64/chef-server_11.0.10-1.ubuntu.12.04_amd64.deb # Install the Chef Server sudo dpkg -i chef-server* # reconfigure the service for your machine sudo chef-server-ctl reconfigure
After the above step, you can access the web interface by typing https:// from your browser. Because the SSL certificate is signed by an authority not recognized by your browser, you will get a warning. Click on the “Proceed anyway” button. Ensure port 443 is open in the security group associated with the server.
Login with the default admin credentials
username: admin password: p@ssw0rd1
Kindly change the default password immediately after logging in for the first time!
Setting up the Workstation
The first step in setting up the workstation is to install git or any other VCS of your choice. Chef community heavily uses git.
sudo apt-get update sudo apt-get install git # Download and run the client installation script from the Chef website. curl -L https://www.opscode.com/chef/install.sh | sudo bash
The Chef package is now installed. The next step is to clone the chef-repo skeleton directory.
cd ~ git clone https://github.com/opscode/chef-repo.git
This will create a directory called chef-repo in your home directory. This is where the entire configuration will be contained.
Create a .chef directory inside chef-repo to save the authentication and configuration files.
Login to the Chef Server (https://<<ElasticIP of the Chef Server>>) with the admin credentials.
Click on the “Clients” tab in the top navigation bar.
Click on the “Edit” button associated with the chef-validator client. Regenerate the private key by selecting that check box and clicking “Save Client”
Copy the private key and save it in the chef-validator.pem file in ~/chef-repo/.chef directory.
Similarly Click on the Users tab in the Navigation bar, Click on the Edit hyperlink associated with admin user and regenerate the private key.
Copy the private key and save it in admin.pem file in ~/chef-repo/.chef directory
Next step is to configure the knife command
Knife is a command-line tool that provides an interface between a local chef-repo and the Chef server. Knife helps provisioning resources, manage recipes/cookbooks, nodes & more.
knife configure –initial
The command will prompt you for the path to pem files, server URL, username and password.
Add the .chef directory to be ignored in the .gitignore list.
Setup your email and name with git and add the ruby embedded with chef path to PATH variable.
To ensure everything is fine, run the “knife user list” command. It will list all the users.
In the next blog, we will look into bootstrapping EC2 instances with Chef.
Cloud Migration Risks & Benefits
If you’re like most businesses, you already have at least one workload running in the cloud. However, that doesn’t mean that cloud migration is right for everyone. While cloud environments are generally scalable, reliable, and highly available, those won’t be the only considerations dri...
Real-Time Application Monitoring with Amazon Kinesis
Amazon Kinesis is a real-time data streaming service that makes it easy to collect, process, and analyze data so you can get quick insights and react as fast as possible to new information. With Amazon Kinesis you can ingest real-time data such as application logs, website clickstre...
Google Cloud Functions vs. AWS Lambda: The Fight for Serverless Cloud Domination
Serverless computing: What is it and why is it important? A quick background The general concept of serverless computing was introduced to the market by Amazon Web Services (AWS) around 2014 with the release of AWS Lambda. As we know, cloud computing has made it possible for users to ...
Google Vision vs. Amazon Rekognition: A Vendor-Neutral Comparison
Google Cloud Vision and Amazon Rekognition offer a broad spectrum of solutions, some of which are comparable in terms of functional details, quality, performance, and costs. This post is a fact-based comparative analysis on Google Vision vs. Amazon Rekognition and will focus on the tech...
New on Cloud Academy: CISSP, AWS, Azure, & DevOps Labs, Python for Beginners, and more…
As Hurricane Dorian intensifies, it looks like Floridians across the entire state might have to hunker down for another big one. If you've gone through a hurricane, you know that preparing for one is no joke. You'll need a survival kit with plenty of water, flashlights, batteries, and n...
Amazon Route 53: Why You Should Consider DNS Migration
What Amazon Route 53 brings to the DNS table Amazon Route 53 is a highly available and scalable Domain Name System (DNS) service offered by AWS. It is named by the TCP or UDP port 53, which is where DNS server requests are addressed. Like any DNS service, Route 53 handles domain regist...
How to Unlock Complimentary Access to Cloud Academy
Are you looking to get trained or certified on AWS, Azure, Google Cloud Platform, DevOps, Cloud Security, Python, Java, or another technical skill? Then you'll want to mark your calendars for August 23, 2019. Starting Friday at 12:00 a.m. PDT (3:00 a.m. EDT), Cloud Academy is offering c...
What Exactly Is a Cloud Architect and How Do You Become One?
One of the buzzwords surrounding the cloud that I'm sure you've heard is "Cloud Architect." In this article, I will outline my understanding of what a cloud architect does and I'll analyze the skills and certifications necessary to become one. I will also list some of the types of jobs ...
Boto: Using Python to Automate AWS Services
Boto allows you to write scripts to automate things like starting AWS EC2 instances Boto is a Python package that provides programmatic connectivity to Amazon Web Services (AWS). AWS offers a range of services for dynamically scaling servers including the core compute service, Elastic...
Content Roadmap: AZ-500, ITIL 4, MS-100, Google Cloud Associate Engineer, and More
Last month, Cloud Academy joined forces with QA, the UK’s largest B2B skills provider, and it put us in an excellent position to solve a massive skills gap problem. As a result of this collaboration, you will see our training library grow with additions from QA’s massive catalog of 500+...
DevSecOps: How to Secure DevOps Environments
Security has been a friction point when discussing DevOps. This stems from the assumption that DevOps teams move too fast to handle security concerns. This makes sense if Information Security (InfoSec) is separate from the DevOps value stream, or if development velocity exceeds the band...
Test Your Cloud Knowledge on AWS, Azure, or Google Cloud Platform
Cloud skills are in demand | In today's digital era, employers are constantly seeking skilled professionals with working knowledge of AWS, Azure, and Google Cloud Platform. According to the 2019 Trends in Cloud Transformation report by 451 Research: Business and IT transformations re...