view mod_prometheus/README.markdown @ 5170:4d6af8950016

mod_muc_moderation: Derive role from reserved nickname if occupant When using a different client to moderate than the one used to participate in the chat, e.g. a command line tool like clix, there's no occupant and no role to use in the permission check. Previously the default role based on affiliation was used. Now if you are present in the room using your reserved nick, the role you have there is used in the permission check instead of the default affiliation-derived role.
author Kim Alvefur <zash@zash.se>
date Sun, 19 Feb 2023 18:17:37 +0100
parents bb66e87a3604
children c90011054335
line wrap: on
line source

---
labels:
- Statistics
summary: Implementation of the Prometheus protocol
...

Description
===========

This module implements the Prometheus reporting protocol, allowing you
to collect statistics directly from Prosody into Prometheus.

See the [Prometheus documentation][prometheusconf] on the format for
more information.

[prometheusconf]: https://prometheus.io/docs/instrumenting/exposition_formats/

**Note:** For use with Prosody trunk (0.12) we recommend the bundled
[mod_http_openmetrics](https://prosody.im/doc/modules/mod_http_openmetrics)
instead. This module (mod_prometheus) will continue to be available in the
community repository for use with older Prosody versions.

Configuration
=============

mod\_prometheus itself doesn’t have any configuration option, but it
requires Prosody’s [internal statistics
provider](https://prosody.im/doc/statistics#built-in_providers) to be
enabled.  You may also want to change the default collection interval
to the one your statistics consumer is using. See below for more information.

```lua
statistics = "internal"
statistics_interval = 15 -- in seconds
```

::: {.alert .alert-warning}
**NOTE:** Make sure to put the statistics variables in the global section of
the configuration, **not** in a `VirtualHost` or `Component` section.  You can
use `prosodyctl check` if you are unsure and want to check your configuration.
:::

See also the documentation of Prosody’s [HTTP
server](https://prosody.im/doc/http), since Prometheus is an HTTP
protocol that is how you can customise its URL.  The default one being
http://localhost:5280/metrics

Scrape interval vs statistics_interval
--------------------------------------

The `statistics_interval` should be set to `"manual"` on trunk if and only
if you have a single Prometheus instance scraping Prosody. This will allow
the internal statistics gathering to run optimally.

If you have multiple instances scraping Prosody, set `statistics_interval`
to the scrape interval of Prometheus to avoid errors in rate calculations
and similar.

Future work will allow the use of `"manual"` with multiple Prometheus
instances and varying scrape intervals (stay tuned).

Compatibility
=============

  ------- -------------
  trunk   Works (but replaced by [mod_http_openmetrics](https://prosody.im/doc/modules/mod_http_openmetrics))
  0.11    Works
  0.10    Works
  0.9     Does not work
  ------- -------------