Google Container-Optimized OS (COS)
OSGoogle Container-Optimized OS (COS) cos-133 is the newest actively maintained release, currently at patch cos-133-19999-44-126. 4 of 17 tracked cycles remain supported. The next cycle scheduled to reach end-of-life is cos-121, on March 1, 2027.
Support pattern
How Google Container-Optimized OS (COS) has behaved across the cycles tracked here, rather than what its policy documents state. Useful for judging how much runway a version is likely to have before you commit to it.
Support windows have stayed consistent across the tracked history, so past cycles are a reasonable guide to what a new one will get.
Computed from release and end-of-life dates tracked for Google Container-Optimized OS (COS). Medians are used rather than averages so one unusually short or long release does not skew the figure. Cycles with no recorded end-of-life date are excluded from the support window.
Release lifecycle
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