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Added Support for Alloy Module Imports
Resolves #537
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103 changes: 103 additions & 0 deletions
103
charts/k8s-monitoring/templates/alloy_config/_alloy-modules.alloy.txt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| {{ define "alloy.config.alloyMetricModules" }} | ||
| // Alloy Modules | ||
| {{- $connections := .Values.metrics.alloyModules.connections }} | ||
| {{- /* Determine the default connection */}} | ||
| {{- $defaultConnection := dict }} | ||
| {{- range $connections }} | ||
| {{- if .default }} | ||
| {{- $defaultConnection = . }} | ||
| {{- end }} | ||
| {{- end }} | ||
| {{- $extraRelabelingRules := .Values.metrics.extraRelabelingRules | default "" }} | ||
| {{- $extraMetricRelabelingRules := .Values.metrics.extraMetricRelabelingRules | default "" }} | ||
| {{- $defaultMaxCacheSize := .Values.metrics.maxCacheSize }} | ||
| {{- $defaultScrapeInterval := .Values.metrics.scrapeInterval }} | ||
| {{- $clustering := .Values.alloy.alloy.clustering.enabled }} | ||
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| {{- range $module := .Values.metrics.alloyModules.modules }} | ||
| {{- $moduleName := $module.alias }} | ||
| {{- /* Find the connection for the module or use the default */}} | ||
| {{- $moduleConnection := $defaultConnection }} | ||
| {{- range $conn := $connections }} | ||
| {{- if and $module.connection (eq $conn.alias $module.connection) }} | ||
| {{- $moduleConnection = $conn }} | ||
| {{- end }} | ||
| {{- end }} | ||
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| // {{ $moduleName }}: import the module | ||
| import.git "module_{{ $moduleName }}" { | ||
| repository = "{{ $moduleConnection.repository }}" | ||
| revision = "{{ $moduleConnection.revision }}" | ||
| path = "{{ $module.path }}" | ||
| pull_frequency = "{{ $moduleConnection.pull_frequency }}" | ||
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| {{- with $moduleConnection.basic_auth }} | ||
| basic_auth { | ||
| {{ if .username }}username = "{{ .username }}"{{ end }} | ||
| {{ if .password }}password = "{{ .password }}"{{ end }} | ||
| {{ if .password_file }}password_file = "{{ .password_file }}"{{ end }} | ||
| } | ||
| {{- end }} | ||
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| {{- with $moduleConnection.ssh_key }} | ||
| ssh_key { | ||
| {{ if .username }}username = "{{ .username }}"{{ end }} | ||
| {{ if .key }}key = "{{ .key }}"{{ end }} | ||
| {{ if .key_file }}key_file = "{{ .key_file }}"{{ end }} | ||
| {{ if .passphrase }}passphrase = "{{ .passphrase }}"{{ end }} | ||
| } | ||
| {{- end }} | ||
| } | ||
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| // {{ $moduleName }}: call the targets component | ||
| module_{{ $moduleName }}.kubernetes "targets" { | ||
| {{- if $module.targets }} | ||
| {{- range $key, $value := $module.targets }} | ||
| {{ $key }} = {{ if kindIs "slice" $value }}[{{ range $index, $item := $value }}"{{ $item }}"{{ if lt $index (sub (len $value) 1) }}, {{ end }}{{ end }}]{{ else }}"{{ $value }}"{{ end }} | ||
| {{- end }} | ||
| {{- end }} | ||
| } | ||
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| // {{ $moduleName }}: additional service discovery relabelings | ||
| discovery.relabel "module_{{ $moduleName }}" { | ||
| targets = module_{{ $moduleName }}.kubernetes.targets.output | ||
| // global discovery relabelings | ||
| {{- if $extraRelabelingRules }} | ||
| {{ $extraRelabelingRules | indent 2 }} | ||
| {{- end }} | ||
| // {{ $moduleName }}: additional discovery relabelings | ||
| {{- if $module.extraRelabelingRules }} | ||
| {{ $module.extraRelabelingRules | indent 2 }} | ||
| {{- end }} | ||
| } | ||
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| // {{ $moduleName }}: call the scrape component | ||
| module_{{ $moduleName }}.scrape "metrics" { | ||
| targets = discovery.relabel.module_{{ $moduleName }}.output | ||
| forward_to = [prometheus.relabel.module_{{ $moduleName }}.receiver] | ||
| clustering = {{ $clustering }} | ||
| scrape_interval = "{{ if and (hasKey $module "scrape") (hasKey $module.scrape "scrape_interval") }}{{ index $module.scrape "scrape_interval" }}{{- else }}{{ $defaultScrapeInterval }}{{- end }}" | ||
| {{- if $module.scrape }} | ||
| {{- range $key, $value := $module.scrape }} | ||
| {{- if not (eq $key "scrape_interval") }} | ||
| {{ $key }} = {{ if kindIs "slice" $value }}[{{ range $index, $item := $value }}"{{ $item }}"{{ if lt $index (sub (len $value) 1) }}, {{ end }}{{ end }}]{{ else }}"{{ $value }}"{{ end }} | ||
| {{- end }} | ||
| {{- end }} | ||
| {{- end }} | ||
| } | ||
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| // {{ $moduleName }}: additional metric relabelings | ||
| prometheus.relabel "module_{{ $moduleName }}" { | ||
| max_cache_size = {{ if and (hasKey $module "scrape") (hasKey $module.scrape "max_cache_size") }}{{ index $module.scrape "max_cache_size" | int }}{{- else }}{{ $defaultMaxCacheSize | int }}{{- end }} | ||
| // global metric relabelings | ||
| {{- if $extraMetricRelabelingRules }} | ||
| {{ $extraMetricRelabelingRules | indent 2 }} | ||
| {{- end }} | ||
| // additional {{ $moduleName }} module specific metric relabelings | ||
| {{- if $module.extraMetricRelabelingRules }} | ||
| {{ $module.extraMetricRelabelingRules | indent 2 }} | ||
| {{- end }} | ||
| forward_to = [prometheus.relabel.metrics_service.receiver] | ||
| } | ||
| {{- end }} | ||
| {{ end }} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| # Alloy Modules | ||
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| This example shows a how to leverage the [Alloy Modules](https://github.com/grafana/alloy-modules) for collecting metrics. These modules are opinionated, where each module has at least the following two components defined: | ||
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| 1. `kubernetes` Used to find targets in the cluster | ||
| 2. `scrape` Used to scrape the found targets. | ||
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| ```yaml | ||
| cluster: | ||
| name: metric-module-imports | ||
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| externalServices: | ||
| prometheus: | ||
| host: https://prometheus.example.com | ||
| basicAuth: | ||
| username: 12345 | ||
| password: "It's a secret to everyone" | ||
| loki: | ||
| host: https://loki.example.com | ||
| basicAuth: | ||
| username: 12345 | ||
| password: "It's a secret to everyone" | ||
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| metrics: | ||
| alloyModules: | ||
| connections: | ||
| - alias: grafana | ||
| repository: https://github.com/grafana/alloy-modules.git | ||
| revision: main | ||
| pull_frequency: 15m | ||
| default: true | ||
| modules: | ||
| - alias: memcached | ||
| path: modules/databases/kv/memcached/metrics.alloy | ||
| - alias: loki | ||
| path: modules/databases/timeseries/loki/metrics.alloy | ||
| - alias: mimir | ||
| path: modules/databases/timeseries/mimir/metrics.alloy | ||
| - alias: tempo | ||
| path: modules/databases/timeseries/tempo/metrics.alloy | ||
| - alias: grafana | ||
| path: modules/ui/grafana/metrics.alloy | ||
| ``` |
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