The CentOS Replacement Landscape: Current Trends and Choices

CentOS alternatives should have the characteristics of stability, compatibility, community support and package management. 1. AlmaLinux provides 10 years of support, 2. Rocky Linux is initiated by the founder of CentOS to ensure compatibility with CentOS. Migration cost and performance optimization should be considered when choosing.

introduction

Over the past few years, CentOS has won the favor of countless businesses and developers as a stable Linux distribution. However, with Red Hat announcing the suspension of support for CentOS 8 and turning its focus to CentOS Stream, many users began looking for alternatives. This article will take you into the current CentOS alternative market, explore the pros and cons of various options, and share some experiences and lessons I have encountered in actual projects. After reading this article, you will have a clear understanding of how to choose a CentOS alternative that suits your needs.

Review of basic knowledge

CentOS has always been known for its stability and compatibility with Red Hat Enterprise Linux (RHEL). However, the launch of CentOS Stream has changed that, forcing users to find new alternatives. The choice of Linux distributions is usually based on factors such as stability, community support, package management, and compatibility with existing systems. These factors are still key to consider when choosing alternatives.

Core concept or function analysis

Definition and function of CentOS alternatives

CentOS alternatives are Linux distributions that can provide similar functionality and stability after CentOS is discontinued. The role of these alternatives is to provide users with a smooth migration path, ensuring the continuous operation and security of the system.

How it works

When choosing a CentOS alternative, we need to consider the following aspects:

• Stability : Whether the alternatives can provide similar stability and security updates to CentOS.
• Compatibility : Whether it is compatible with existing applications and services, and whether the migration costs are controllable.
• Community support : Whether there is active community and official support, and whether it can be solved quickly when problems are encountered.
• Package management : Whether to support commonly used package management tools, such as yum or dnf.

Example of usage

Basic usage

Let's look at several common CentOS alternatives and their basic usage:

AlmaLinux

AlmaLinux is a CentOS alternative powered by CloudLinux, which promises a 10-year support cycle.

 # Install AlmaLinux
wget https://repo.almalinux.org/almalinux/8/BaseOS/x86_64/kickstart/AlmaLinux-8.4-x86_64-dvd.iso

Rocky Linux

Rocky Linux was initiated by Greg Kurtzer, one of the founders of CentOS, and aims to provide an alternative that is fully compatible with CentOS.

 # Install Rocky Linux
wget https://download.rockylinux.org/pub/rocky/8/isos/x86_64/Rocky-8.4-x86_64-dvd1.iso

Advanced Usage

In actual projects, we may encounter some complex migration scenarios. For example, how to migrate an existing CentOS system to a new alternative while ensuring that all services and applications are functioning properly.

 # Use rsync for data migration rsync -avz /path/to/centos/data/ root@new-server:/path/to/new/data/

# After the migration is completed, update the software package sudo dnf update

Common Errors and Debugging Tips

During the migration process, you may encounter some common problems, such as package dependency issues, configuration file incompatibility, etc. Here are some debugging tips:

• Package dependency problem : Use the --skip-broken option of dnf or yum to skip unsolved dependency problem.
• Configuration file incompatibility : Manually check and adjust the configuration file to ensure compatibility with the new system.

Performance optimization and best practices

Here are some recommendations for performance optimization and best practices when selecting and using CentOS alternatives:

• Performance comparison : When selecting alternatives, you can compare the performance of different distributions through benchmarking tools such as sysbench .

 # Install sysbench
sudo dnf install sysbench

# Run the benchmark sysbench --test=cpu --cpu-max-prime=20000 run

• Best practices : Keep systems and software packages updated, back up data regularly, and ensure system security and stability.

In a real project, I encountered a case where a customer found that some applications had a decline in performance after migrating from CentOS to Rocky Linux. After detailed performance analysis, we found that the problem lies in the database configuration. By tuning database parameters and optimizing queries, we successfully restored performance to its original level. This experience made me deeply realize that during the migration process, we should not only pay attention to the system itself, but also consider the optimization of the application layer.

In short, when choosing a CentOS alternative, factors such as stability, compatibility, community support and package management need to be comprehensively considered. With the introduction and examples of this article, I hope you can find alternatives that suit your needs and avoid common pitfalls during the migration process.

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