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mod_auth_sql: Document database table in README
author Christian Weiske <cweiske@cweiske.de>
date Tue, 27 Jan 2026 21:12:21 +0100
parents 1d48c75c8200
children 13c61a068c71
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1 ---
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2 labels:
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3 - 'Statistics'
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4 ...
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5
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6 Exposes server information over Pub/Sub per [XEP-0485: PubSub Server Information](https://xmpp.org/extensions/xep-0485.html).
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8 The module announces support (used to 'opt-in', per the XEP) and publishes the name of the local domain via a Pub/Sub node. The published data
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9 will contain a 'remote-domain' element for inbound and outgoing s2s connections. These elements will be named only when the remote domain announces
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10 support ('opts in') too.
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12 **Known issues:**
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14 - [Issue #1841](https://issues.prosody.im/1841): In Prosody 0.12, this module conflicts with mod_server_contact_info (both will run, but it may affect the ability of some implementations to read the server/contact information provided). To work around this issue, the [mod_server_contact_info](https://modules.prosody.im/mod_server_contact_info) community module can be used.
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16 Configuration
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17 =============
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18
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19 ### Loading the module
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21 Simply enable this module on the hosts/components that you want to publish information for. Note that, as with most other modules, adding it to the
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22 global `modules_enabled` will automatically load it on all VirtualHosts on your server:
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23
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24 ```
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25 modules_enabled = {
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26 ...
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27 "pubsub_serverinfo";
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28 ...
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29 }
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30 ```
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31
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32 Note that adding it to the global modules_enabled won't load it on any Component hosts on your server. If you want to publish info about those, you
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33 also need to add it to a `modules_enabled` setting under that Component, for example:
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34
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35 ```
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36 Component "rooms.example.com" "muc"
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37 modules_enabled = {
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38 "pubsub_serverinfo";
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39 }
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40 ```
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41
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42 ### Specifying the publish destination
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43
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44 This module publishes information to any XMPP pubsub service, which could be local (i.e. served by the same Prosody instance) or remote (via
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45 server-to-server connections).
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47 The destination to publish to is controlled by two settings:
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48
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49 - `pubsub_serverinfo_service`
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50 - `pubsub_serverinfo_node`
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51
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52 As usual, these options can be set in the global section (inherited by all hosts/component) or underneath each VirtualHost/Component to apply
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53 to that VirtualHost/Component only.
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54
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55 If unset, `pubsub_serverinfo_service` will default to `pubsub.<domain>` - that is, it will try to publish to a pubsub service that is on the
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56 `pubsub` subdomain of the host it is publishing about. For example, if you load the module on `example.com` it will default to publishing to
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57 `pubsub.example.com`. If this is incorrect, you should set `pubsub_serverinfo_service` to a valid pubsub service address.
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58
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59 The `pubsub_serverinfo_node` option defaults to `"serverinfo"`. Note that if you have multiple hosts publishing to the same pubsub service, you
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60 *must* set this to something unique for each one, otherwise they will overwrite each other.
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61
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62 ### Pubsub service configuration
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63
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64 As mentioned, you can publish to a local or remote pubsub service. The publish commands will come from the reporting domain(s) where the module
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65 is loaded (e.g. `example.com`), so those domains must be permitted to publish to the destination pubsub service you have chosen.
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66
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67 If you want to run a local pubsub service in the same Prosody instance, you can use this configuration:
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69 ```
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70 Component "pubsub.example.com" "pubsub"
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71 -- Grant permission for example.com to publish here, by simply making it
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72 -- an admin:
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73 admins = { "example.org" }
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74 ```
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75
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76 ### Other settings
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77
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78 To prevent a surplus of event notifications, this module will only publish new data after a certain period of time has expired. The default duration
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79 is 300 seconds (5 minutes). To change this simply put in the config:
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80
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81 ```
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82 pubsub_serverinfo_publication_interval = 180 -- or any other number of seconds
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83 ```
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84
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85 To detect if remote domains allow their domain name to be included in the data that this module publishes, this module will perform a service
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86 discovery request to each remote domain. To prevent a continuous flood of disco/info requests, the response to these requests is cached. By default,
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87 a cached value will remain in cache for one hour. This duration can be modified by adding this configuration option:
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89 ```
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90 pubsub_serverinfo_cache_ttl = 1800 -- or any other number of seconds
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91 ```
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92
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93 To include the count of active (within the past 30 days) users:
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95 ```
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96 pubsub_serverinfo_publish_user_count = true
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97 ```
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98
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99 Enabling this option will automatically load mod_measure_active_users, which must be installed.
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101 Compatibility
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102 =============
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103
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104 Incompatible with 0.11 or lower.
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105
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106 Known Issues / TODOs
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107 ====================
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108
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109 The reported data does not contain the optional 'connection' child elements. These can be used to describe the direction of a connection.
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110
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111 Common Configuration Issues
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112 ===========================
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113
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114 ### Incorrect permissions on pubsub service
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116 The XMPP domain itself (for example, `example.org`) must be allowed to publish to the chosen pubsub service, e.g. by making it an admin of that service.
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117 Sometimes people mistakenly assume a user JID (e.g., `admin@example.org`) should be an admin. See the example above for correct configuration.
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118
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119 ### Enabling the module on the wrong host
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120
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121 `mod_pubsub_serverinfo` must be enabled globally or within a virtual host, **not inside the PubSub component** (unless you want to publish info about that
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122 component). Generally you are instructing other hosts to publish data to the pubsub service, not extending the pubsub service itself.
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123
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124 Additionally, be aware that adding mod_pubsub_serverinfo to the global modules_enabled will not load it on any Components by default, you must still specify
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125 that explicitly (see the earlier configuration example).
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126
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127 ### Conditional dependency on `mod_measure_active_users`
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128
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129 Publishing user counts requires `mod_measure_active_users`. This module will be loaded automatically if user count publication is enabled, but it must be installed on the system for this to succeed.
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130
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131 ### DNS records for the PubSub service
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132
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133 External servers must be able to connect to the PubSub service. Ensure the hostname of the PubSub service has appropriate A/AAAA and SRV records so remote servers can discover and reach the service.
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134 You can use the 'prosodyctl check' command to help with this.