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mod_pubsub_alertmanager/README.md

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mod_pubsub_alertmanager/README.md @ 5296:0f5657db1cfc

mod_isolate_host: handle server-generated stanzas The hook for setting the no_host_isolation is only called for c2s sessions. This does not work for stanzas generated by the server, such as PEP notifications or presence probe answers. To handle that, we do per-stanza checks for the case that the origin is local.
author Jonas Schäfer <jonas@wielicki.name>
date Sat, 01 Apr 2023 12:03:08 +0200
parent 4624:eba7e68120d8
child 5485:67190744b1eb
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1 ---
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2 labels:
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3 - 'Stage-Alpha'
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4 summary: Alertmanager webhook receiver for pubsub
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5 ---
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6
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7 # Introduction
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8
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9 This module lets
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10 [Alertmanager](https://prometheus.io/docs/alerting/latest/alertmanager/)
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11 publish alerts to [pubsub][doc:pubsub] via
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12 [webhooks](https://prometheus.io/docs/alerting/latest/configuration/#webhook_config).
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13
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14 # Setup
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15
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16 The relevant pubsub nodes must be created and configured somehow.
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17 Because the request IP address is used to publish, the `publisher`
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18 affiliation should be given to the IP address Alertmanager sends
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19 webhooks from.
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20
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21 # Configuration
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22
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23 ## Prometheus
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24
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25 A Prometheus `rule_files` might contain something along these lines:
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26
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27 ``` yaml
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28 groups:
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29 - name: Stuff
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30 rules:
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31 - alert: Down
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32 expr: up == 0
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33 for: 5m
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34 annotations:
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35 title: 'Stuff is down!'
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36 labels:
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37 severity: 'critical'
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38 ```
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39
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40 ## Alertmanager
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41 On the Alertmanager site the webhook configuration may look something
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42 like this:
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43
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44 ``` yaml
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45 receivers:
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46 - name: pubsub
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47 webhook_configs:
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48 - url: http://pubsub.localhost:5280/pubsub_alertmanager
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49 ```
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50
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51 And then finally some Alertmanager routes would point at that receiver:
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52
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53 ``` yaml
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54 route:
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55 receiver: pubsub
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56 ```
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57
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58 ## Prosody
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59
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60 On the Prosody side, apart from creating and configuring the node(s)
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61 that will be used, configure your pubsub service like this:
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62
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63 ``` lua
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64 Component "pubsub.example.com" "pubsub"
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65 modules_enabled = {
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66 "pubsub_alertmanager",
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67 }
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68
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69 -- optional extra settings:
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70 alertmanager_body_template = [[
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71 *ALARM!* {annotations.title?Alert} is {status}
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72 Since {startsAt}{endsAt& until {endsAt}}
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73 Labels: {labels%
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74 {idx}: {item}}
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75 Annotations: {annotations%
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76 {idx}: {item}}
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77 ]]
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78
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79 alertmanager_node_template = "alerts/{alert.labels.severity}"
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80 ```
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81
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82 If no node template is given, either an optional part after
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83 "pubsub_alertmanager" in the HTTP path is used as node, or the string
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84 "alerts". Here, an alerts would be published to different nodes based on
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85 the 'severity' label, so e.g. `alerts/critical` in this example.
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86
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87 ## All Options
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88
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89 Available configuration options:
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90
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91 `alertmanager_body_template`
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92 : Template for the textual representation of alerts.
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93
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94 `alertmanager_node_template`
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95 : Template for the pubsub node name, defaults to `"{path?alerts}"`