Ceph 发布版本（通用）

Understanding the release cycle

Starting with the Nautilus release (14.2.0), there is a new stable release cycle every year, targeting the month of March. Each stable release series will receive a name (e.g., ‘Mimic’) and a major release number (e.g., 13 for Mimic because ‘M’ is the 13th letter of the alphabet).

Releases are named after a species of cephalopod (usually the common name, since the latin names are harder to remember or pronounce).

Version numbers have three components,x.y.z. xidentifies the release cycle (e.g., 13 for Mimic).yidentifies the release type:

x.0.z - development versions
x.1.z - release candidates (for test clusters, brave users)
x.2.z - stable/bugfix releases (for users)

Release candidates (x.1.z)

There is a feature freeze roughly two months prior to the planned initial stable release, after which focus shifts to stabilization and bug fixes only.

Release candidate release every 1-2 weeks
Intended for final testing and validation of the upcoming stable release

Stable releases (x.2.z)

Once the initial stable release is made (x.2.0), there are semi-regular bug-fix point releases with bug fixes and (occasionally) feature backports. Bug fixes are accumulated and included in the next point release.

Stable point release every 4 to 6 weeks
Intended for production deployments
Bug fix backports for 2 full release cycles (2 years).
Online, rolling upgrade support and testing from the last two (2) stable release(s) (starting from Luminous).
Online, rolling upgrade support and testing from prior stable point releases

For each stable release:

Integration and upgrade testsare run on a regular basis andtheir resultsanalyzed by Ceph developers.
Issuesfixed in the development branch (master) are scheduled to be backported.
When an issue found in the stable release isreported, it is triaged by Ceph developers.
Thestable releases and backport teampublishespoint releasesincluding fixes that have been backported to the stable release.

Lifetime of stable releases

The lifetime of a stable release series is calculated to be approximately 24 months (i.e., two 12 month release cycles) after the month of the first release. For example, Mimic (13.2.z) will reach end of life (EOL) shortly after Octopus (15.2.0) is released. The lifetime of a release may vary because it depends on how quickly the stable releases are published.

Detailed information on all releases, past and present, can be found atCeph 发布版本（索引）

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