Prometheus LTS are selected releases of Prometheus which gets bugfixes for an extended period of time.
Every 6 weeks, a new Prometheus minor release cycle is started. Past those 6 weeks, minor releases generally don't receive bugfixes anymore. If a user is impacted by a bug in a minor release, very often they need to upgrade to the latest Prometheus release.
Upgrading Prometheus should be straightforward thanks to our API stability guarantees. However, there is a risk that new features and enhancements also bring regressions, requiring to upgrade again.
Prometheus LTS only gets bug, security, and documentation fixes. The build toolchain will also be kept up-to-date. This enables companies relying on Prometheus to limit the risks of upgrades while having a Prometheus server still maintained by the community.
The first Prometheus LTS release will be Prometheus v2.37. This version will be released in July 2022 and will be supported until January 31 2023.
Some features are excluded from LTS support:
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