annotate mod_pubsub_alertmanager/README.md @ 5160:8474a3b80200

mod_firewall: Fix 'is_admin' internal dependency rule #1797 (thanks diane) Looks like the boolean logic was inverted here. Instead, for now, simply check if is_admin is there. It is deprecated in trunk and was briefly removed before being brought back with a 'deprecated' warning as part of the new roles and permissions work. Making this dependency conditioned on the existence of the underlying function should make it work until it actually goes away for real.
author Kim Alvefur <zash@zash.se>
date Fri, 27 Jan 2023 23:06:25 +0100
parents eba7e68120d8
children 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}"`