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mod_client_management: Fix traceback if no last seen timestamp available
author Kim Alvefur <zash@zash.se>
date Fri, 14 Jul 2023 16:09:43 +0200
parents f1a63271dcfc
children
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1 ---
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2 labels:
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3 - 'Stage-Beta'
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4 - 'Statistics'
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5 summary: Implementation of the Munin node protocol
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6 ...
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7
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8 Summary
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9 =======
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11 This module implements the Munin reporting protocol, allowing you to
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12 collect statistics directly from Prosody into Munin.
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14 Configuration
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15 =============
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16
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17 There is only one recommended option, `munin_node_name`, which specifies
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18 the name that Prosody will identify itself by to the Munin server. You
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19 may want to set this to the same hostname as in the [SRV record][doc:dns]
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20 for the machine.
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21
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22 ```lua
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23 modules_enabled = {
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24 -- your other modules
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25 "munin",
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26 }
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28 munin_node_name = "xmpp.example.com"
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29 ```
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30
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31 You will also want to enable statistics collection by setting:
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32
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33 ```lua
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34 statistics_interval = 300 -- every 5 minutes, same as munin
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35 ```
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37 ## Summary
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38
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39 All these must be in [the global section][doc:configure#overview].
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40
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41 Option Type Default
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42 ----------------------- -------- ---------------------------
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43 munin\_node\_name string `"localhost"`
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44 munin\_ignored\_stats set `{ }`
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45 munin\_ports set `{ 4949 }`
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46 munin\_interfaces set `{ "0.0.0.0", "::" }`[^1]
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48 [^1]: Varies depending on availability of IPv4 and IPv6
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49
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50 ## Ports and interfaces
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53 `mod_munin` listens on port `4949` on all local interfaces by default.
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54 This can be changed with the standard [port and network configuration][doc:ports]:
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56
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57 ``` lua
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58 -- defaults:
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59 munin_ports = { 4949 }
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60 munin_interfaces = { "::", "0.0.0.0" }
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61 ```
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62
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63 If you already have a `munin-node` instance running, you can set a
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64 different port to avoid the conflict.
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65
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66 ## Configuring Munin
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67
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68 Simply add `munin_node_name` surrounded by brackets to `/etc/munin/munin.conf`:
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69
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70 ``` ini
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71 [xmpp.example.com]
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72 address xmpp.example.com
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73 port 4949
2009
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74 ```
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75
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76 You can leave out `address` if it equal to the name in brackets, and
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77 leave out the `port` if it is the default (`4949`).
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78
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79 Setting `address` to an IP address may sometimes be useful as the Munin
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80 collection server is not delayed by DNS lookups in case of network
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81 issues.
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82
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83 If you set a different port, or if the hostname to connect to is
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84 different from this hostname, make sure to add `port` and/or `address`
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85 options.
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86
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87 See [Munin documentation][muninconf] for more information.
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88
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89 Compatibility
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90 =============
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91
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92 **Requires** Prosody 0.10 or above
2009
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93
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94 [muninconf]: http://guide.munin-monitoring.org/en/stable-2.0/reference/munin.conf.html