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Background

Last updated: 2024-01-08 09:37:01

    Background

    CentOS plans to officially discontinue support for CentOS Linux, with details shown in the table below. For more information, see CentOS's official announcement.
    OS Version
    Maintenance End Date
    Customer Impact
    CentOS 8
    January 1, 2022
    After end of maintenance, any software maintenance and support including bug fixes and feature updates are unavailable.
    CentOS 7
    June 30, 2024
    Choose the OpenCloudOS Community Stable Edition (free of charge) or TencentOS Server images for newly purchased CVMs

    Introduction to OpenCloudOS and TencentOS Server

    Initiated by Tencent and its partners, CloudOpenOS is a standalone, fully open OS and ecosystem with security, stability, and high performance.
    For more information about OpenCloudOS, see OpenCloudOS Overview.
    TencentOS Server is Tencent's Linux OS designed for cloud scenarios. With specific features and optimized performance, TencentOS Server provides a high-performance, secure, and reliable operating environment for applications in CVM instances.
    For a more comprehensive understanding of TencentOS Server, please refer to the TencentOS Server Documentation.

    Linux editions issued in the ecosystem supply chain are classified into four categories here:

    L1 Stream Edition, such as OpenCloudOS Stream and the well-known Fedora and Debian.
    L2 Commercial Edition, the majority of which are issued by commercial companies, such as TencentOS Server by Tencent, RHEL by Redhat, and Ubuntu by Canonical.
    L3 Community Stable Edition, usually a free reissue of a commercial system such as OpenCloudOS and the original CentOS. This edition has few differences from the L2 Commercial Edition.
    L4 Community Derived Edition, an optimized and customized edition based on L3.
    
    OpenCloudOS falls under the L3 Community Stable Edition category and TencentOS Server the L2 Commercial Edition category. OpenCloudOS is to TencentOS Server what CentOS is to RHEL.
    OpenCloudOS is derived from the commercial stable edition of TencentOS Server and has basically the same source code. The main difference is that the commercial edition provides SLA Guaranteed technical support.
    
    OpenCloudOS
    TencentOS Server
    Kernel version
    Linux v5.4 kernel
    Linux v5.4 kernel
    User mode
    Compatible with CentOS 8 (OpenCloudOS 8.X)
    Compatible with CentOS 7 (TencentOS Server 2.4) and CentOS 8 (TencentOS Server 3.1)
    Technical support
    From the OpenCloudOS community
    From TencentOS Server technical support
    Flaw/vulnerability publish
    In the community
    By TencentOS Server technical support
    OpenCloudOS is a community-based OS, available to you for free and maintained by developers in the community. If you need service and maintenance from a professional OS team, you can purchase the TencentOS Server subscription service.

    Directions for CentOS migration

    If you are using CentOS 8, you can migrate it to OpenCloudOS as instructed in Migrating CentOS to OpenCloudOS.
    If you have CentOS instances, you can migrate them to TencentOS Server as instructed in Migrating CentOS to TencentOS.
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