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mod_prometheus/README.md

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mod_prometheus/README.md @ 6078:71c9a01b7e30

mod_checkcerts: fix warning.
author Menel <menel@snikket.de>
date Sat, 07 Dec 2024 22:51:41 +0100
parent 6047:8c3bacf3549e
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1 ---
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2 labels:
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3 - Stage-Obsolete
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4 - Statistics
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5 summary: Implementation of the Prometheus protocol
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6 ...
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7
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8 Description
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9 ===========
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11 This module implements the Prometheus reporting protocol, allowing you
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12 to collect statistics directly from Prosody into Prometheus.
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14 See the [Prometheus documentation][prometheusconf] on the format for
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15 more information.
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16
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17 [prometheusconf]: https://prometheus.io/docs/instrumenting/exposition_formats/
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18
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19 ::: {.alert .alert-info}
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20 **Note:** For use with Prosody 0.12 or later we recommend the bundled
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21 [mod_http_openmetrics](https://prosody.im/doc/modules/mod_http_openmetrics)
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22 instead. This module (mod_prometheus) will continue to be available in the
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23 community repository for use with older Prosody versions.
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24 :::
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25
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26 Configuration
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27 =============
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28
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29 mod\_prometheus itself doesn’t have any configuration option, but it
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30 requires Prosody’s [internal statistics
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31 provider](https://prosody.im/doc/statistics#built-in_providers) to be
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32 enabled. You may also want to change the default collection interval
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33 to the one your statistics consumer is using. See below for more information.
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34
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35 ```lua
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36 statistics = "internal"
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37 statistics_interval = 15 -- in seconds
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38 ```
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39
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40 ::: {.alert .alert-warning}
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41 **NOTE:** Make sure to put the statistics variables in the global section of
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42 the configuration, **not** in a `VirtualHost` or `Component` section. You can
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43 use `prosodyctl check` if you are unsure and want to check your configuration.
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44 :::
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45
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46 See also the documentation of Prosody’s [HTTP
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47 server](https://prosody.im/doc/http), since Prometheus is an HTTP
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48 protocol that is how you can customise its URL. The default one being
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49 http://localhost:5280/metrics
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50
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51 Scrape interval vs statistics_interval
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52 --------------------------------------
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53
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54 The `statistics_interval` should be set to `"manual"` on trunk if and only
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55 if you have a single Prometheus instance scraping Prosody. This will allow
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56 the internal statistics gathering to run optimally.
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57
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58 If you have multiple instances scraping Prosody, set `statistics_interval`
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59 to the scrape interval of Prometheus to avoid errors in rate calculations
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60 and similar.
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61
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62 Future work will allow the use of `"manual"` with multiple Prometheus
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63 instances and varying scrape intervals (stay tuned).
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64
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65 Compatibility
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66 =============
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67
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68 ------- -------------
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69 0.12 Works (but replaced by [mod_http_openmetrics](https://prosody.im/doc/modules/mod_http_openmetrics))
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70 0.11 Works
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71 0.10 Works
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72 0.9 Does not work
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73 ------- -------------