Disable legacy Prometheus metric names by default. They can still be re-enabled for now, but they will be removed altogether in Synapse 1.73.0. (#14353)

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reivilibre 2022-11-02 17:33:45 +00:00 committed by GitHub
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Synapse (Next) (2022-11-01)
=========================
Please note that, as announced in the release notes for Synapse 1.69.0, legacy Prometheus metric names are now disabled by default.
They will be removed altogether in Synapse 1.73.0.
If not already done, server administrators should update their dashboards and alerting rules to avoid using the deprecated metric names.
See the [upgrade notes](https://matrix-org.github.io/synapse/v1.71/upgrade.html#upgrading-to-v1710) for more details.
Synapse 1.71.0rc1 (2022-11-01) Synapse 1.71.0rc1 (2022-11-01)
============================== ==============================

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Disable legacy Prometheus metric names by default. They can still be re-enabled for now, but they will be removed altogether in Synapse 1.73.0.

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@ -116,6 +116,22 @@ local users and some remote users is why the spec was changed/clarified and this
caveat is no longer supported. caveat is no longer supported.
## Legacy Prometheus metric names are now disabled by default
Synapse v1.71.0 disables legacy Prometheus metric names by default.
For administrators that still rely on them and have not yet had chance to update their
uses of the metrics, it's still possible to specify `enable_legacy_metrics: true` in
the configuration to re-enable them temporarily.
Synapse v1.73.0 will **remove legacy metric names altogether** and at that point,
it will no longer be possible to re-enable them.
If you do not use metrics or you have already updated your Grafana dashboard(s),
Prometheus console(s) and alerting rule(s), there is no action needed.
See [v1.69.0: Deprecation of legacy Prometheus metric names](#deprecation-of-legacy-prometheus-metric-names).
# Upgrading to v1.69.0 # Upgrading to v1.69.0
## Changes to the receipts replication streams ## Changes to the receipts replication streams

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@ -2441,8 +2441,8 @@ enable_metrics: true
Set to `true` to publish both legacy and non-legacy Prometheus metric names, Set to `true` to publish both legacy and non-legacy Prometheus metric names,
or to `false` to only publish non-legacy Prometheus metric names. or to `false` to only publish non-legacy Prometheus metric names.
Defaults to `true`. Has no effect if `enable_metrics` is `false`. Defaults to `false`. Has no effect if `enable_metrics` is `false`.
**In Synapse v1.71.0, this will default to `false` before being removed in Synapse v1.73.0.** **In Synapse v1.67.0 up to and including Synapse v1.70.1, this defaulted to `true`.**
Legacy metric names include: Legacy metric names include:
- metrics containing colons in the name, such as `synapse_util_caches_response_cache:hits`, because colons are supposed to be reserved for user-defined recording rules; - metrics containing colons in the name, such as `synapse_util_caches_response_cache:hits`, because colons are supposed to be reserved for user-defined recording rules;

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@ -43,7 +43,7 @@ class MetricsConfig(Config):
def read_config(self, config: JsonDict, **kwargs: Any) -> None: def read_config(self, config: JsonDict, **kwargs: Any) -> None:
self.enable_metrics = config.get("enable_metrics", False) self.enable_metrics = config.get("enable_metrics", False)
self.enable_legacy_metrics = config.get("enable_legacy_metrics", True) self.enable_legacy_metrics = config.get("enable_legacy_metrics", False)
self.report_stats = config.get("report_stats", None) self.report_stats = config.get("report_stats", None)
self.report_stats_endpoint = config.get( self.report_stats_endpoint = config.get(