CentOS Stream: The Successor and its Implications

CentOS Stream is a cutting-edge version of RHEL, providing an open platform for users to experience new RHEL features in advance. 1. CentOS Stream is the upstream development and testing environment for RHEL, connecting RHEL and Fedora. 2. Through rolling releases, users can continuously receive updates, but they need to pay attention to stability. 3. The basic usage is similar to traditional CentOS and needs to be updated frequently; advanced usage can be used to develop new features. 4. Frequently asked questions include package compatibility and configuration file changes, requiring debugging using dnf and diff. 5. Performance optimization suggestions include regular cleaning of the system, optimizing update policies, and monitoring system performance.

introduction

As the successor of CentOS, CentOS Stream has attracted widespread attention and discussion in the Linux community. As a long-term Linux user and developer, I know the importance of CentOS in the server field, and the emergence of CentOS Stream is undoubtedly a major change in the Linux ecosystem. This article will explore the background of CentOS Stream, its relationship with CentOS, and its impact on users and developers. By reading this article, you will learn about the core concepts of CentOS Stream, usage scenarios, and how to apply it in real-life projects.

Review of basic knowledge

CentOS has always been one of the top choices for enterprise-grade Linux distributions, and has won the favor of a large number of users for its stability and compatibility with Red Hat Enterprise Linux (RHEL). However, in 2020, Red Hat announced that it would stop supporting CentOS in favor of CentOS Stream, which surprised and confused many users. CentOS Stream is not a traditional distribution, but a rolling release development platform, aiming to provide RHEL with an upstream development and testing environment.

Core concept or function analysis

The definition and function of CentOS Stream

CentOS Stream can be regarded as a cutting-edge version of RHEL, providing an open platform that allows developers and users to experience upcoming features and updates in RHEL in advance. Its main role is to act as an intermediate layer, connecting RHEL and upstream Fedora projects, fostering collaboration between communities and businesses.

 # Install CentOS Stream
sudo dnf install centos-release-stream
sudo dnf upgrade -y
sudo dnf distro-sync -y

This simple installation command demonstrates the ease of use of CentOS Stream, but the meaning behind it goes far beyond that. By using CentOS Stream, users can participate in the development process of RHEL, submit bug reports and patches, thereby affecting future RHEL versions.

How it works

CentOS Stream works in that it is a rolling release system, meaning it will continuously receive updates from upstream, rather than having a fixed version cycle like traditional releases. The benefit of this approach is that users can always use the latest software packages, but also present challenges because the stability of the system may be affected.

In actual use, the update mechanism of CentOS Stream relies on the dnf package manager, which periodically pulls the latest packages from the CentOS Stream repository. Users can view and manage updates through the following commands:

 # View available updates sudo dnf check-update

# Apply all available updates sudo dnf update -y

Although this mechanism provides the latest features, it also requires users to pay more attention to the stability and compatibility issues of the system.

Example of usage

Basic usage

The basic usage of CentOS Stream is very similar to that of traditional CentOS, but due to its scrolling release features, users need to update the system more frequently. Here is a basic usage example showing how to install and configure a web server on CentOS Stream:

 # Install Apache web server sudo dnf install httpd -y

# Start the Apache service sudo systemctl start httpd

# Configure Apache to automatically start sudo systemctl when system starts

This example demonstrates the ease of use of CentOS Stream, but users need to note that the compatibility of installed software may be affected by rolling updates of the system.

Advanced Usage

For experienced users, CentOS Stream offers more possibilities. For example, new features can be tested and developed using its scrolling release features. Here is an example of advanced usage that shows how to set up a development environment on CentOS Stream:

 # Install development tool sudo dnf groupinstall "Development Tools" -y

# Install Python development environment sudo dnf install python3 python3-devel -y

# Create a virtual environment python3 -m venv myenv
source myenv/bin/activate

# Install the required Python package pip install flask

This example shows how to use the latest software packages of CentOS Stream to build a modern development environment, but it should be noted that the continuous update of the system may lead to changes in the development environment.

Common Errors and Debugging Tips

When using CentOS Stream, users may experience common problems, such as package compatibility issues or configuration file changes caused by system updates. Here are some common errors and their debugging tips:

• Package Compatibility Issues : Due to the scrolling release feature of CentOS Stream, some packages may be incompatible with other parts of the system. The workaround is to use the dnf command to view the dependencies of the package and try to use a different version or alternative package.

 # View the dependencies of the package sudo dnf repoquery --requires --resolve <package_name>

• Configuration file changes : System updates may cause configuration files to change, causing the service to fail to function properly. The solution is to use the diff command to compare the configuration files before and after the update and manually merge the changes.

 # Compare the changes in configuration file diff /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.conf.rpmsave

These debugging techniques can help users better deal with the challenges of CentOS Stream, but it should be noted that due to the continuous changes in the system, it may require continuous adjustment and optimization.

Performance optimization and best practices

Performance optimization and best practices are very important when using CentOS Stream. Here are some suggestions:

• Regularly clean up the system : Due to the scrolling release feature of CentOS Stream, the system may accumulate a large number of old software packages and cache files. Regularly using the dnf command to clean the system can improve performance.

 # Clean old packages and cache files sudo dnf clean all

• Optimize package updates : Due to continuous updates of the system, frequent updates of the package may be caused. The update process can be optimized by configuring the update strategy of dnf .

 # Configure the update policy of dnf sudo dnf config-manager --setopt=installonly_limit=3 --save

• Monitor system performance : System performance may be affected due to the scrolling release characteristics of CentOS Stream. Using tools such as top , htop or sysdig can help monitor system performance and promptly discover and resolve problems.

These best practices can help users better use CentOS Stream, but it should be noted that due to the ever-changing system, it may require continuous adjustment and optimization.

Overall, CentOS Stream, as the successor of CentOS, brings new opportunities and challenges. By understanding its core concepts and usage methods, users can better utilize their strengths while coping with the changes and uncertainties it brings. In actual projects, CentOS Stream can serve as a powerful development and testing platform, but users need to pay more attention to system stability and compatibility issues. Hope this article provides you with valuable insights and guidance to help you easily in the world of CentOS Stream.

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