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Version Lifecycle and Support

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最終更新日: 2026-10-19 15:16:15
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Version Support Notes

The TencentOS Server lifecycle is 10+3 years, ensuring long-term stable support.
Phase 1 (Full support: about 5 years)
Phase 2 (Maintenance: about 5 years)
Phase 3 (Extended lifecycle: about 3 years)
The maintenance lifecycle for each major version is 10 years and can be extended by 3 years if needed (requiring additional purchase). The lifecycle is divided into three phases, which are described as follows:
Phase
Definition
Duration
Full support phase
(Phase 1)
Includes fixes for Critical and Important security vulnerabilities, fixes for urgent high-priority bugs, OS software feature enhancements and optimizations, support for new hardware features that do not require extensive code changes, and continuous minor version updates for images on the cloud or ISO images in yum repositories. Tencent Cloud provides full OS technical support.
5 years
Maintenance phase
(Phase 2)
Includes fixes for Critical and Important security vulnerabilities and fixes for urgent high-priority bugs. Generally, new OS software features or hardware features are no longer supported. Continuous minor version updates for images on the cloud or ISO images in yum repositories are provided.
5 years
Extended lifecycle phase
(Phase 3)
Only fixes for Critical and Important security vulnerabilities and urgent high-priority bugs are included. New OS software features and new hardware features are no longer provided. Minor versions of cloud images or ISO images in yum repositories are no longer updated.
3 years

TencentOS Server 2.4 (TK4)

GA
End of Full Support (EOFS)
End of Maintenance (EOM)
End of Support (EOS)
2019.12.31
2024.12.31
2029.12.31
2032.12.31

TencentOS Server 3

GA
End of Full Support (EOFS)
End of Maintenance (EOM)
End of Support (EOS)
2019.12.31
2024.12.31
2029.12.31
2032.12.31

TencentOS Server 4

GA
End of Full Support (EOFS)
End of Maintenance (EOM)
End of Support (EOS)
2023.4.30
2028.4.30
2033.4.30
2036.4.30
A major version is released approximately every 4 years. Tencent provides standard services for Phases 1 and 2 (10 years) for each major version, and provides Extended Lifecycle Services (ELS) for Phase 3 on demand.
During each major version lifecycle, a minor version is released every 3-4 years, and Lifecycle Extension Update Services (LLUS) are provided for minor versions on demand.
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