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📁 ..	-	2025-05-25 12:27
📄 .gitignore vendor dashboards_out	22 B	2025-05-25 12:27
📄 .lint exclusions: target-instance-rule: reason: no need to have every query contains two matchers within every selector - `{job=~"$job", instance=~"$instance"}` template-job-rule: entries: - dashboard: Alertmanager / Overview reason: multi-select is not always required template-instance-rule: entries: - dashboard: Alertmanager / Overview reason: multi-select is not always required panel-units-rule: entries: - dashboard: Alertmanager / Overview reason: Dashboard does not benefit from specific unit specification.	565 B	2025-05-25 12:27
📄 Makefile JSONNET_FMT := jsonnetfmt -n 2 --max-blank-lines 1 --string-style s --comment-style s ALERTMANAGER_ALERTS := alertmanager_alerts.yaml default: vendor build dashboards_out all: fmt build vendor: jb install fmt: find . -name 'vendor' -prune -o -name '.libsonnet' -print -o -name '.jsonnet' -print \| \ xargs -n 1 -- $(JSONNET_FMT) -i lint: build find . -name 'vendor' -prune -o -name '.libsonnet' -print -o -name '.jsonnet' -print \| \ while read f; do \ $(JSONNET_FMT) "$$f" \| diff -u "$$f" -; \ done mixtool lint mixin.libsonnet dashboards_out: mixin.libsonnet config.libsonnet $(wildcard dashboards/*) @mkdir -p dashboards_out jsonnet -J vendor -m dashboards_out dashboards.jsonnet build: vendor mixtool generate alerts mixin.libsonnet > $(ALERTMANAGER_ALERTS) clean: rm -rf $(ALERTMANAGER_ALERTS)	828 B	2025-05-25 12:27
📄 README.md # Alertmanager Mixin The Alertmanager Mixin is a set of configurable, reusable, and extensible alerts (and eventually dashboards) for Alertmanager. The alerts are designed to monitor a cluster of Alertmanager instances. To make them work as expected, the Prometheus server the alerts are evaluated on has to scrape all Alertmanager instances of the cluster, even if those instances are distributed over different locations. All Alertmanager instances in the same Alertmanager cluster must have the same `job` label. In turn, if monitoring multiple different Alertmanager clusters, instances from different clusters must have a different `job` label. The most basic use of the Alertmanager Mixin is to create a YAML file with the alerts from it. To do so, you need to have `jsonnetfmt` and `mixtool` installed. If you have a working Go development environment, it's easiest to run the following: ```bash $ go get github.com/monitoring-mixins/mixtool/cmd/mixtool $ go get github.com/google/go-jsonnet/cmd/jsonnetfmt ``` Edit `config.libsonnet` to match your environment and then build `alertmanager_alerts.yaml` with the alerts by running: ```bash $ make build ``` For instructions on more advanced uses of mixins, see https://github.com/monitoring-mixins/docs.	1.24 KB	2025-05-25 12:27
📄 alerts.jsonnet std.manifestYamlDoc((import 'mixin.libsonnet').prometheusAlerts)	65 B	2025-05-25 12:27
📄 alerts.libsonnet { prometheusAlerts+:: { groups+: [ { name: 'alertmanager.rules', rules: [ { alert: 'AlertmanagerFailedReload', expr: \|\|\| # Without max_over_time, failed scrapes could create false negatives, see # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details. max_over_time(alertmanager_config_last_reload_successful{%(alertmanagerSelector)s}[5m]) == 0 \|\|\| % $._config, 'for': '10m', labels: { severity: 'critical', }, annotations: { summary: 'Reloading an Alertmanager configuration has failed.', description: 'Configuration has failed to load for %(alertmanagerName)s.' % $._config, }, }, { alert: 'AlertmanagerMembersInconsistent', expr: \|\|\| # Without max_over_time, failed scrapes could create false negatives, see # https://www.robustperception.io/alerting-on-gauges-in-prometheus-2-0 for details. max_over_time(alertmanager_cluster_members{%(alertmanagerSelector)s}[5m]) < on (%(alertmanagerClusterLabels)s) group_left count by (%(alertmanagerClusterLabels)s) (max_over_time(alertmanager_cluster_members{%(alertmanagerSelector)s}[5m])) \|\|\| % $._config, 'for': '15m', labels: { severity: 'critical', }, annotations: { summary: 'A member of an Alertmanager cluster has not found all other cluster members.', description: 'Alertmanager %(alertmanagerName)s has only found {{ $value }} members of the %(alertmanagerClusterName)s cluster.' % $._config, }, }, { alert: 'AlertmanagerFailedToSendAlerts', expr: \|\|\| ( rate(alertmanager_notifications_failed_total{%(alertmanagerSelector)s}[5m]) / ignoring (reason) group_left rate(alertmanager_notifications_total{%(alertmanagerSelector)s}[5m]) ) > 0.01 \|\|\| % $._config, 'for': '5m', labels: { severity: 'warning', }, annotations: { summary: 'An Alertmanager instance failed to send notifications.', description: 'Alertmanager %(alertmanagerName)s failed to send {{ $value \| humanizePercentage }} of notifications to {{ $labels.integration }}.' % $._config, }, }, { alert: 'AlertmanagerClusterFailedToSendAlerts', expr: \|\|\| min by (%(alertmanagerClusterLabels)s, integration) ( rate(alertmanager_notifications_failed_total{%(alertmanagerSelector)s, integration=~`%(alertmanagerCriticalIntegrationsRegEx)s`}[5m]) / ignoring (reason) group_left rate(alertmanager_notifications_total{%(alertmanagerSelector)s, integration=~`%(alertmanagerCriticalIntegrationsRegEx)s`}[5m]) ) > 0.01 \|\|\| % $._config, 'for': '5m', labels: { severity: 'critical', }, annotations: { summary: 'All Alertmanager instances in a cluster failed to send notifications to a critical integration.', description: 'The minimum notification failure rate to {{ $labels.integration }} sent from any instance in the %(alertmanagerClusterName)s cluster is {{ $value \| humanizePercentage }}.' % $._config, }, }, { alert: 'AlertmanagerClusterFailedToSendAlerts', expr: \|\|\| min by (%(alertmanagerClusterLabels)s, integration) ( rate(alertmanager_notifications_failed_total{%(alertmanagerSelector)s, integration!~`%(alertmanagerCriticalIntegrationsRegEx)s`}[5m]) / ignoring (reason) group_left rate(alertmanager_notifications_total{%(alertmanagerSelector)s, integration!~`%(alertmanagerCriticalIntegrationsRegEx)s`}[5m]) ) > 0.01 \|\|\| % $._config, 'for': '5m', labels: { severity: 'warning', }, annotations: { summary: 'All Alertmanager instances in a cluster failed to send notifications to a non-critical integration.', description: 'The minimum notification failure rate to {{ $labels.integration }} sent from any instance in the %(alertmanagerClusterName)s cluster is {{ $value \| humanizePercentage }}.' % $._config, }, }, { alert: 'AlertmanagerConfigInconsistent', expr: \|\|\| count by (%(alertmanagerClusterLabels)s) ( count_values by (%(alertmanagerClusterLabels)s) ("config_hash", alertmanager_config_hash{%(alertmanagerSelector)s}) ) != 1 \|\|\| % $._config, 'for': '20m', // A config change across an Alertmanager cluster can take its time. But it's really bad if it persists for too long. labels: { severity: 'critical', }, annotations: { summary: 'Alertmanager instances within the same cluster have different configurations.', description: 'Alertmanager instances within the %(alertmanagerClusterName)s cluster have different configurations.' % $._config, }, }, // Both the following critical alerts, AlertmanagerClusterDown and // AlertmanagerClusterCrashlooping, fire if a whole cluster is // unhealthy. It is implied that a generic warning alert is in place // for individual instances being down or crashlooping. { alert: 'AlertmanagerClusterDown', expr: \|\|\| ( count by (%(alertmanagerClusterLabels)s) ( avg_over_time(up{%(alertmanagerSelector)s}[5m]) < 0.5 ) / count by (%(alertmanagerClusterLabels)s) ( up{%(alertmanagerSelector)s} ) ) >= 0.5 \|\|\| % $._config, 'for': '5m', labels: { severity: 'critical', }, annotations: { summary: 'Half or more of the Alertmanager instances within the same cluster are down.', description: '{{ $value \| humanizePercentage }} of Alertmanager instances within the %(alertmanagerClusterName)s cluster have been up for less than half of the last 5m.' % $._config, }, }, { alert: 'AlertmanagerClusterCrashlooping', expr: \|\|\| ( count by (%(alertmanagerClusterLabels)s) ( changes(process_start_time_seconds{%(alertmanagerSelector)s}[10m]) > 4 ) / count by (%(alertmanagerClusterLabels)s) ( up{%(alertmanagerSelector)s} ) ) >= 0.5 \|\|\| % $._config, 'for': '5m', labels: { severity: 'critical', }, annotations: { summary: 'Half or more of the Alertmanager instances within the same cluster are crashlooping.', description: '{{ $value \| humanizePercentage }} of Alertmanager instances within the %(alertmanagerClusterName)s cluster have restarted at least 5 times in the last 10m.' % $._config, }, }, ], }, ], }, }	7.59 KB	2025-05-25 12:27
📄 config.libsonnet { _config+:: { local c = self, // alertmanagerSelector is inserted as part of the label selector in // PromQL queries to identify metrics collected from Alertmanager // servers. alertmanagerSelector: 'job="alertmanager"', // alertmanagerClusterLabels is a string with comma-separated // labels that are common labels of instances belonging to the // same Alertmanager cluster. Include not only enough labels to // identify cluster members, but also all common labels you want // to keep for resulting cluster-level alerts. alertmanagerClusterLabels: 'job', // alertmanagerNameLabels is a string with comma-separated // labels used to identify different alertmanagers within the same // Alertmanager HA cluster. // If you run Alertmanager on Kubernetes with the Prometheus // Operator, you can make use of the configured target labels for // nicer naming: // alertmanagerNameLabels: 'namespace,pod' alertmanagerNameLabels: 'instance', // alertmanagerName is an identifier for alerts. By default, it is built from 'alertmanagerNameLabels'. alertmanagerName: std.join('/', ['{{$labels.%s}}' % [label] for label in std.split(c.alertmanagerNameLabels, ',')]), // alertmanagerClusterName is inserted into annotations to name an // Alertmanager cluster. All labels used here must also be present // in alertmanagerClusterLabels above. alertmanagerClusterName: '{{$labels.job}}', // alertmanagerCriticalIntegrationsRegEx is matched against the // value of the `integration` label to determine if the // AlertmanagerClusterFailedToSendAlerts is critical or merely a // warning. This can be used to avoid paging about a failed // integration that is itself not used for critical alerts. // Example: @'pagerduty\|webhook' alertmanagerCriticalIntegrationsRegEx: @'.*', dashboardNamePrefix: 'Alertmanager / ', dashboardTags: ['alertmanager-mixin'], }, }	1.94 KB	2025-05-25 12:27
📁 dashboards	-	2025-05-25 12:27
📄 dashboards.jsonnet local dashboards = (import 'mixin.libsonnet').grafanaDashboards; { [name]: dashboards[name] for name in std.objectFields(dashboards) }	140 B	2025-05-25 12:27
📄 dashboards.libsonnet (import './dashboards/overview.libsonnet')	43 B	2025-05-25 12:27
📄 jsonnetfile.json { "version": 1, "dependencies": [ { "source": { "git": { "remote": "https://github.com/grafana/grafonnet.git", "subdir": "gen/grafonnet-latest" } }, "version": "main" } ], "legacyImports": false }	267 B	2025-05-25 12:27
📄 jsonnetfile.lock.json { "version": 1, "dependencies": [ { "source": { "git": { "remote": "https://github.com/grafana/grafonnet.git", "subdir": "gen/grafonnet-latest" } }, "version": "1ce5aec95ce32336fe47c8881361847c475b5254", "sum": "64fMUPI3frXGj4X1FqFd1t7r04w3CUSmXaDcJ23EYbQ=" }, { "source": { "git": { "remote": "https://github.com/grafana/grafonnet.git", "subdir": "gen/grafonnet-v11.1.0" } }, "version": "1ce5aec95ce32336fe47c8881361847c475b5254", "sum": "41w7p/rwrNsITqNHMXtGSJAfAyKmnflg6rFhKBduUxM=" }, { "source": { "git": { "remote": "https://github.com/jsonnet-libs/docsonnet.git", "subdir": "doc-util" } }, "version": "6ac6c69685b8c29c54515448eaca583da2d88150", "sum": "BrAL/k23jq+xy9oA7TWIhUx07dsA/QLm3g7ktCwe//U=" }, { "source": { "git": { "remote": "https://github.com/jsonnet-libs/xtd.git", "subdir": "" } }, "version": "63d430b69a95741061c2f7fc9d84b1a778511d9c", "sum": "qiZi3axUSXCVzKUF83zSAxklwrnitMmrDK4XAfjPMdE=" } ], "legacyImports": false }	1.19 KB	2025-05-25 12:27
📄 mixin.libsonnet (import 'config.libsonnet') + (import 'alerts.libsonnet') + (import 'dashboards.libsonnet')	92 B	2025-05-25 12:27

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