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annotate mod_measure_modules/README.md @ 5737:72b0fa7e36dc
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Also not sure if the timestamp comparisons were correct before.
author | Kim Alvefur <zash@zash.se> |
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date | Mon, 27 Nov 2023 14:27:35 +0100 |
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mod_measure_modules: Report module statuses via OpenMetrics
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1 # Introduction |
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2 |
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3 This module reports [module status priorities][doc:developers:moduleapi#logging-and-status] as metrics, which are a kind of persistent log messages |
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4 indicating whether the module is functioning properly. |
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5 |
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6 This concept was introduced in [Prosody 0.12.0][doc:release:0.12.0#api] and is not used extensively yet, primarily for reporting failure to load |
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7 modules or e.g. [mod_component] not being connected to its external component yet. |
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8 |
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9 Besides using this to report problems, this metric could also be used to count how many modules are loaded or monitor for when critical modules aren't |
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10 loaded at all. |
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11 |
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12 # Configuration |
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13 |
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14 After installing, enable by adding to [`modules_enabled`][doc:modules_enabled] like many other modules: |
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15 |
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16 ``` lua |
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17 -- in the global section |
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18 modules_enabled = { |
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19 -- Other globally enabled modules here... |
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20 "http_openmetrics"; |
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21 "measure_modules"; -- add |
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22 } |
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23 ``` |
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24 |
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25 # Example OpenMetrics |
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26 |
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27 ``` openmetrics |
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28 # HELP prosody_module_status Prosody module status |
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29 # UNIT prosody_module_status |
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30 # TYPE prosody_module_status gauge |
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31 prosody_module_status{host="example.org",module="message"} 0 |
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32 prosody_module_status{host="example.org",module="presence"} 0 |
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33 prosody_module_status{host="groups.example.org",module="muc"} 0 |
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34 ``` |
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35 |
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36 # Details |
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37 |
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38 The priorities are reported as the following values: |
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39 |
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40 0 |
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41 : `core` - no problem, nothing to report |
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42 |
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43 1 |
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44 : `info` - no problem, but a module had something important to say |
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45 |
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46 2 |
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47 : `warn` - something is not right |
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48 |
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49 3 |
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50 : `error` - something has gone wrong |
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51 |
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52 Status changes are generally also reported in Prosodys logs, so look there for details. |
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53 |
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54 # See also |
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55 |
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56 - [mod_http_status] provides all module status details as JSON via HTTP |