GitHub CI/CD is the platform that allows developers to spend more time on code building by automating testing processes and encouraging collaboration. If you are seeking to know more about GitHub CI/CD, this is the blog post prepared for you. Well! This tutorial discusses GitHub CI/CD, its features, GitHub actions, how to get started with GitHub, how to create a workflow, and many more.
Be it an individual or enterprise, facing challenges is an everyday occurrence. Enhancing the quality is one of the ways to overcome your challenges – whether it is software development or any other arena. When developers spend more time on coding than testing and debugging, they can produce quality codes for no reason.
In this way, GitHub is the platform that offers a shared repository to developers where they can build and test codes and merge them with the main codes automatically. GitHub is one of the code hosting platforms which encourages collaboration and manages version control effectively. In other words, developers can work with their team members – no matter where they are and in which time zone. Simply put, GitHub is the platform that breaks the barriers of walls in the office environment without compromising the quality of code development.
In this tutorial, you will learn GitHub CI/CD, its features, GitHub actions, its key components, how to get started with GitHub, how to create a workflow, and many more. Let’s begin:
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CI refers to Continuous Integration, and CD refers to Continuous Delivery and Continuous Deployment.
Let’s take a look at CI and CD below:
1. Continuous Integration (CI): CI is a software practice allowing developers to push their codes into GitHub repositories frequently. Once the codes are pushed into the repository, testing is automatically carried out, and errors are flagged. Also, team members can share their suggestions to change the codes if needed. If there are no errors, the codes will be ready to merge with the main codes or project. This process reduces the developer’s time on testing and debugging significantly and allows them to spend more time in code building.
When all the team members of a development project frequently share their codes in the GitHub repositories, correct errors, and merge codes, the speed of code-building will be geared up to higher levels. Know that the CI server supports checking new code commits in a GitHub repository. Here, commit means saving the new codes in the repository.
When it comes to continuous delivery and continuous deployment, they differ by the way the codes are pushed into production. Let’s know them in detail below:
2. Continuous Delivery: In this type, approval is required before GitHub delivers the changes that you have made in the codes to the production.
3. Continuous Deployment: Here, GitHub directly deploys the changes you have made in the codes to the production.
Additionally, Continuous Delivery needs human involvement, which in turn causes some delays in the delivery. On the other hand, Continuous Deployment pushes codes directly into production once the codes pass the testing stages in GitHub. That is why continuous deployment is faster than continuous delivery.
4. GitHub CI/CD Pipeline: It is a series of automated workflows used by GitHub, which helps avoid manual tasks.
Undeniably, speedy code deployment is the primary benefit of GitHub CI/CD. But how is this achieved? Let’s understand this from the below pointers.
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GitHub is nothing short compared to other similar tools in terms of its features. Let’s find the outline of the features of GitHub:
GitHub provides an automatic environment through which developers can update their codes by taking feedback from the team members. You can allow the team members to review the pushed codes with pull requests. Through discussion forums, the team members can suggest changes in the codes as soon as you push the codes into the GitHub repository and enable pull requests. In this regard, GitHub Pilot supports getting feedback for your code lines and functions inside the editor itself. As a whole, you can improve the quality of the codes. Note that GitHub allows you to limit the team members who can review your codes.
GitHub automates code development workflows, simplifying writing and testing codes and their deployment. Not only this, GitHub automates the essential tasks such as planning, project management, testing, issue labelling, and approvals. You can share and update secret codes across many repositories on GitHub and sync them automatically. Once it is made, it enhances the security of the codes significantly. Besides, you can scale best practices, improve security features, and satisfy compliances in GitHub with its automation capabilities.
With GitHub, once you start building codes, simultaneously you start to secure the codes – throughout the code-building process. GitHub supports identifying vulnerabilities before pushing your codes into production. GitHub allows maintaining private repositories, which helps developers to secure their secret codes. Know that only the developers can view the codes in private repositories.
You can apply Multifactor Authentication (MFA) to protect your data on GitHub. MFA provides two-stage authentication for logging in to GitHub, which is the extra layer of protection. Also, notification will be enabled whenever new vulnerabilities are found in the repositories. What’s more! GitHub provides enterprise security through SAML, IP allow list, audit log API, LDAP, and GitHub connect.
GitHub supports all types of platforms, such as Windows, Linux, and macOS. GitHub allows you to use a powerful text interface along with using a UI interface. Nevertheless, you can simplify development workflow through GUI without using CLI. It enables you to visualize, commit, and make code changes quickly.
With the project management tools of GitHub, you can easily organize as well as prioritize your tasks on GitHub. You can mention the priority or category by applying labels to issues and pull requests. Be it a small-scale or big-scale project, GitHub project management helps to coordinate effectively with the support of tools such as project tables, task lists, and boards.
Tracking the progress of group issues and pull requests is simplified in GitHub and easily mapped with the overall project goals. GitHub offers a profile contribution graph through which you can view all your contribution towards GitHub enterprises and others. Sure! Insights like trends generated through the repository activity data are used to make data-driven decisions and quality improvements.
GitHub allows you to manage access to repositories and deal with permissions. In other words, you can update permissions, do reviews, add new users, and control the permissions effectively. You can also group users and organize access control both group-wise and individually.
[ Check out Git Tips and Tricks ]
Here’s what you can do with the components of the CI/CD tool kit.
GitHub Version Control System (VCS) is the tool that keeps tracking all the versions of a software project. Also, VCS keeps tracking the history of changes that developers frequently made on those projects. In one place, you can find all the decisions, progressions, etc., made related to the projects. Therefore, developers can collaborate with the team members irrespective of location and time.
GitHub comes with effective tools for packaging files and running tests. These tools ensure performance, quality, and other code development and enhancement metrics. Once the codes are built, they will be pushed for further testing and staging.
Whenever developers enable pull requests to review their codes, CI/CD workflows get triggered and allow team members to review their codes. Know that it is one of the best practices followed on GitHub. This practice supports developers in boosting the quality of their codes, facilitates collaboration, and allows them to bring out the best outputs. Moreover, team members will approve pull requests after the changes are incorporated into the codes or if they have nothing to suggest. Note that codes can be merged with main codes only after the team members approve the pull requests.
GitHub allows you to configure the environment for CI/CD tests and deployment. Providing the protection rules and secrets, GitHub supports you in configuring an environment meeting the compliance and security requirements.
It is a CI/CD platform that automates building and testing codes and deployment pipeline. Here, action refers to the reusable extension used to simplify workflows. With GitHub Actions, you will create workflows that will help to test all the pull requests enabled by developers. Know that GitHub actions allow running workflows automatically though some events are still running on the GitHub repositories. Here, the event refers to creating an issue in the repository, opening a pull request, etc. With the automated workflows, you can deploy merged pull requests to production.
You will need to know the different components of GitHub Actions. Here are the functions of the components in detail.
Continuous Integration with GitHub actions creates workflows that test codes in the GitHub repositories. As said earlier, CI workflow is triggered when there are events such as pushing new codes into the GitHub repository. CI workflow runs the pushed codes and checks the errors. Once the codes pass the CI tests of the workflow, they will become ready to be merged with the main codes. Suppose errors are found while running the tests, they have to be rectified before the merging process.
In fact, GitHub offers workflows based on coding languages. Suppose you use the node.js language, GitHub will suggest to you the ‘starter workflows’ and install the corresponding packages and run the tests.
This tutorial will teach you to create a repository, start a branch, make file changes, and open and merge a pull request in detail. Let’s jump into the steps right away!
Prerequisites: You need to have a GitHub account along with stable internet access.
Step 1: Create a Repository:
Know that a repository is a place where you can organize a project. Repositories may contain folders, files, videos, spreadsheets, datasheets, images, etc. Usually, repositories will have a README file where you can find the information about the project. GitHub allows you to create a repository and add a README file simultaneously.
Let’s see how to create a repository below.
Step 2: Create a Branch
You can have different versions of a project in the repository with branches. Creating a branch allows you not to change the main source code. And you can make experiments or edits using branches. After that, you can commit and open a pull request to get suggestions from team members. Once the changes are incorporated into the branch, you can merge them with the main code.
The below diagram will help you to know the branches. Here, the new branch is named ‘feature’.
Let’s look at the steps below to create a branch:
By now, you will have two files – one is ‘main’, and the other is ‘readme-edits’.
Step 3: Make and Commit Changes
You can save the changes made in the branches, which is known as commit. Every commit is made with a message that will brief the reasons for your changes. This commit message will be helpful for team members to know the reasons behind the commits.
Let’s see how to make commits in repositories as shown below:
Step 4: Open a Pull Request
Pull request is the primary element in GitHub for achieving collaboration. By opening a pull request, you invite the team members to pour in their suggestions for your changes in the branch. Then, you can include their contributions in the branch and merge them with the main code. One of the main advantages of using a pull request is that it considerably saves developers time.
Let’s learn how to open a pull request below:
Step 5: Merge a Pull Request
This is the last step in which you can merge the branch code with the main code. Once the merging is done, the branch code will be incorporated with the main code. If any conflict occurs while merging, notifications will be enabled by GitHub. Note that merging won’t be successful until all the conflicts are resolved.
Once you have resolved the conflicts, you can follow the below steps to complete merging.
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This tutorial will help you to walk through creating a workflow with GitHub Actions.
Know that YAML syntax is used in GitHub actions to define workflows. Generally, workflows are stored in a directory named .github/workflows. You can create an example workflow to check the pushed codes and install the ‘bats’ testing framework. And then, the workflow runs the command to output the bats version.
Okay! Let’s dive into the steps below:
Step 1: Creating a Repository on GitHub
In the GitHub repository, you can create a .github/workflows/ directory where you can store your workflow files.
Step 2: Building a Workflow
In the above directory, you can create a new file named ‘learn-github actions.yml’ and then add the following code.
name: learn-github-actions on: [push] jobs: check-bats-version: runs-on: ubuntu-latest steps: - uses: actions/checkout@v3 - uses: actions/setup-node@v3 with: node-version: '14' - run: npm install -g bats - run: bats -v
Step 3: Committing Changes and Pushing
Finally, you can commit the changes and push them into the repository. Therefore, a new workflow file is created and installed in the repository. Whenever you make a change in the repository due to pushed codes, the workflow will be triggered automatically.
[ Related Article: Centralized Workflow in Git ]
GitHub CI/CD platform offers many benefits to developers. Here are the listicles:
[ Also check GitLab Tutorial ]
In a nutshell, GitHub CI/CD allows developers to make frequent changes to the codes in the repositories. Whenever code changes are committed, GitHub automatically tests to identify errors before merging the changes in the main code. It remarkably saves developers' testing and debugging time and allows them to focus on code building. Especially collaboration is simplified in the GitHub CI/CD. In this tutorial, you should have learned about GitHub CI/CD nuances, its features, GitHub actions, etc. Also, you must have learned how to get started with GitHub and create workflows with GitHub Actions.
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