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* docs: 2 to 3 migration guide Signed-off-by: Jan Fajerski <jfajersk@redhat.com> * docs/stability: add 3.0 section Signed-off-by: Jan Fajerski <jfajersk@redhat.com> * docs/migration: details on enabling legacy name validation Signed-off-by: Owen Williams <owen.williams@grafana.com>\ * migration: add log format and `le` normalization Signed-off-by: Jan Fajerski <jfajersk@redhat.com> * migration: add new enable_http2 default for remote write Signed-off-by: Jan Fajerski <jfajersk@redhat.com> --------- Signed-off-by: Jan Fajerski <jfajersk@redhat.com> Signed-off-by: Owen Williams <owen.williams@grafana.com> Co-authored-by: Owen Williams <owen.williams@grafana.com>
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| title | sort_rank |
|---|---|
| API Stability | 11 |
API Stability Guarantees
Prometheus promises API stability within a major version, and strives to avoid breaking changes for key features. Some features, which are cosmetic, still under development, or depend on 3rd party services, are not covered by this.
Things considered stable for 3.x:
- The query language and data model
- Alerting and recording rules
- The ingestion exposition format
- v1 HTTP API (used by dashboards and UIs)
- Configuration file format (minus the service discovery remote read/write, see below)
- Rule/alert file format
- Console template syntax and semantics
- Remote write sending, per the 1.0 specification and receiving
- Agent mode
- OTLP receiver endpoint
Things considered unstable for 3.x:
- Any feature listed as experimental or subject to change, including:
- The
double_exponential_smoothingPromQL function - Remote read and the remote read endpoint
- The
- Server-side HTTPS and basic authentication
- Service discovery integrations, with the exception of
static_configs,file_sd_configsandhttp_sd_config - Go APIs of packages that are part of the server
- HTML generated by the web UI
- The metrics in the /metrics endpoint of Prometheus itself
- Exact on-disk format. Potential changes however, will be forward compatible and transparently handled by Prometheus
- The format of the logs
Prometheus 2.x stability guarantees can be found in the 2.x documentation.
As long as you are not using any features marked as experimental/unstable, an
upgrade within a major version can usually be performed without any operational
adjustments and very little risk that anything will break. Any breaking changes
will be marked as CHANGE in release notes.