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annotate mod_host_status_check/README.markdown @ 4877:adc6241e5d16

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mod_measure_process: Report the enforced limit The soft limit is what the kernel actually enforces, while the hard limit is is how far you can change the soft limit without privileges. Unless the process dynamically adjusts the soft limit, knowing the hard limit is not as useful as knowing the soft limit. Reporting the soft limit and the number of in-use FDs allows placing alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jan 2022 18:55:20 +0100
parents 2a16a6c67288
children 694b62d8a82f
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2 labels: Stage-Beta
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3 summary: Host status check
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4 ...
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6 Introduction
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7 ============
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9 This module allows you to monitor the state of hosts and components in your Prosody server. For example,
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10 it will track whether components are connected and (if the component supports it) listen for heartbeats
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11 sent by the component to indicate that it is functioning.
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13 This module does not expose any interface to access the status information itself. See [mod\_http\_host\_status\_check]
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14 for a module that allows you to access host status information over HTTP(S).
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16 Configuration
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17 =============
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19 There are no configuration options for this module.
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21 You should enable it on every host that you want to monitor, by adding it to modules\_enabled. Note
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22 that to monitor components, adding to the global modules\_enabled list will not suffice - you will
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23 need to add it to the component's own modules\_enabled, like this:
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25 ``` {.lua}
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26 Component "mycomponent.example.com"
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27 modules_enabled = { "host_status_check" }
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28 ```
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30 Compatibility
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31 =============
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33 Works with Prosody 0.9.x and later.