centos belongs to linux. centos is an enterprise-level Linux distribution based on Red Hat Linux that can freely use source code; centos is the product of recompilation of RHEL source code and is more stable than other Linux distributions.
The operating environment of this article: centos 6.4 system, Dell G3 computer.
Is centos linux or unix
CentOS (Community ENTerprise Operating System) is one of the Linux distributions. It is derived from the source code released by Red Hat Enterprise Linux in accordance with open source regulations. compiled. Because it comes from the same source code, some servers that require high stability use CentOS instead of the commercial version of Red Hat Enterprise Linux.
CentOS is an enterprise-level Linux distribution based on Red Hat Linux that can freely use source code. Each version of CentOS is supported (via security updates) for ten years. A new version of CentOS is released approximately every two years, and each version of CentOS is updated regularly (approximately every six months) to support new hardware. In this way, a secure, low-maintenance, stable, highly predictable, and highly repeatable Linux environment is established. [1] CentOS is the abbreviation of Community Enterprise Operating System.
CentOS is the product of recompilation of RHEL (Red Hat Enterprise Linux) source code, and many known bugs have been corrected on the basis of RHEL. Compared with other Linux distributions, its stability is trustworthy. In addition, since the Fedora Core plan is also rooted in the Red Hat system, in most cases, friends who use Fedora Core can also complete the construction and installation of servers through various CentOS-related techniques and methods introduced on this site. maintenance work. But compared to stability, Fedora Core focuses more on the latest technology and is more oriented to desktop applications and development testing, which also causes the stability of Fedora Core to be considered as a secondary aspect.
RHEL has always provided a source code distribution method. CentOS recompiles the source code released by RHEL to form a usable binary version. Since the source code of LINUX is GNU, it is legal to obtain the source code of RHEL and compile it into a new binary. It’s just that REDHAT is a trademark, so the REDHAT trademark must be removed in the new release.
REDHAT's attitude towards this kind of distribution is: "We are not actually opposed to this kind of distribution. The users who really pay us do not value the system itself, but the commercial services we provide. .”
So, CentOS can get all the functions of RHEL, even better software. However, CentOS does not provide commercial support to users, and of course it does not bear any commercial responsibility.
But if it is a purely business-oriented enterprise, it is recommended to purchase RHEL software and purchase corresponding services. This saves you IT management costs and provides you with professional services.
CentOS announced that it would join Red Hat in early 2014.
CentOS is an operating system distribution based on Linux;
Linux is a kernel system with only a terminal command interface and no graphical interface;
CentOS has a terminal command interface and a graphical interface Interface;
Recommended tutorial: "centos tutorial"
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CentOS is widely selected as a server operating system because it is stable, secure and free. 1.CentOS is based on RHEL, providing enterprise-level stability and a life cycle of up to 10 years. 2. It has rich software packages and strong community support. 3. Simple installation, use yum management software package, and intuitive configuration. 4. Improve server management efficiency through command line tools, regular backups and log management. 5. Optimize server performance by adjusting kernel and network parameters.

CentOS will continue to develop through CentOSStream in the future. CentOSStream is no longer a direct clone of RHEL, but is part of RHEL development. Users can experience the new RHEL functions in advance and participate in development.

The transition from development to production in CentOS can be achieved through the following steps: 1. Ensure the consistent development and production environment, use the YUM package management system; 2. Use Git for version control; 3. Use Ansible and other tools to automatically deploy; 4. Use Docker for environmental isolation. Through these methods, CentOS provides powerful support from development to production, ensuring the stable operation of applications in different environments.

CentOSStream is a cutting-edge version of RHEL, providing an open platform for users to experience the new RHEL functions in advance. 1.CentOSStream is the upstream development and testing environment of 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 functions. 4. Frequently asked questions include package compatibility and configuration file changes, and requires debugging using dnf and diff. 5. Performance optimization suggestions include regular cleaning of the system, optimizing update policies and monitoring system performance.

The reason for the end of CentOS is RedHat's business strategy adjustment, community-business balance and market competition. Specifically manifested as: 1. RedHat accelerates the RHEL development cycle through CentOSStream and attracts more users to participate in the RHEL ecosystem. 2. RedHat needs to find a balance between supporting open source communities and promoting commercial products, and CentOSStream can better convert community contributions into RHEL improvements. 3. Faced with fierce competition in the Linux market, RedHat needs new strategies to maintain its leading position in the enterprise-level market.

RedHat shut down CentOS8.x and launches CentOSStream because it hopes to provide a platform closer to the RHEL development cycle through the latter. 1. CentOSStream, as the upstream development platform of RHEL, adopts a rolling release mode. 2. This transformation aims to enable the community to get exposure to new RHEL features earlier and provide feedback to accelerate the RHEL development cycle. 3. Users need to adapt to changing systems and reevaluate system requirements and migration strategies.

CentOS stands out among enterprise Linux distributions because of its stability, security, community support and enterprise application advantages. 1. Stability: The update cycle is long and the software package has been strictly tested. 2. Security: Inherit the security features of RHEL, update and announce in a timely manner. 3. Community support: a huge community and detailed documentation to respond to problems quickly. 4. Enterprise applications: Support container technologies such as Docker, suitable for modern application deployment.

Alternatives to CentOS include AlmaLinux, RockyLinux, and OracleLinux. 1.AlmaLinux provides RHEL compatibility and community-driven development. 2. RockyLinux emphasizes enterprise-level support and long-term maintenance. 3. OracleLinux provides Oracle-specific optimization and support. These alternatives have similar stability and compatibility to CentOS, and are suitable for users with different needs.


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