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annotate mod_measure_modules/README.md @ 5788:31c331d05a75

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mod_s2s_status: Add missing return (thanks Zash)
author Matthew Wild <mwild1@gmail.com>
date Fri, 08 Dec 2023 12:45:22 +0000
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children
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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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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