prosody-modules
adc6241e5d16
mod_discodot/mod_discodot.lua

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mod_discodot/mod_discodot.lua @ 4877:adc6241e5d16

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
parent 4577:253df0798996
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4577
253df0798996 mod_discodot: Print a graph of service discovery
Kim Alvefur <zash@zash.se>
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1 local cm = require("core.configmanager");
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2
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3 local function format_host(host, conf)
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4 if host == "*" then
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5 return "Global"
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6 end
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7 local component_module = conf["component_module"];
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8 if type(component_module) == "string" then
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9 if component_module == "component" then
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10 return string.format("Component %q", host)
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11 else
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12 return string.format("Component %q %q", host, component_module)
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13 end
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14 else
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15 return string.format("VirtualHost %q", host)
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16 end
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17 end
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18
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19 function module.command(arg)
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20
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21 local config = cm.getconfig();
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22
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23 print("digraph \"prosody\" {")
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24 for host, conf in pairs(config) do
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25 print(string.format("%q [label=%q]", host, format_host(host, conf)));
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26 local parent = host:match("%.(.*)");
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27 if parent and rawget(config, parent) then
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28 print(string.format("%q -> %q", parent, host));
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29 end
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30 local disco_items = conf["disco_items"]
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31 if type(disco_items) == "table" then
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32 for _, pair in ipairs(disco_items) do
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33 print(string.format("%q -> %q", host, pair[1]));
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34 end
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35 end
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36
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37 end
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38
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39 print("}")
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40
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41 return 0
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42 end