From a96898a74efa9ff2f682c2c8b8b36d637be5f1fb Mon Sep 17 00:00:00 2001 From: Nicolas Lamirault Date: Fri, 18 Jun 2021 18:29:28 +0200 Subject: [PATCH] Add: init alertmanager-mixin chart Signed-off-by: Nicolas Lamirault --- charts/alertmanager-mixin/.helmignore | 23 +++ charts/alertmanager-mixin/Chart.yaml | 54 +++++ charts/alertmanager-mixin/LICENSE | 195 ++++++++++++++++++ charts/alertmanager-mixin/README.md | 28 +++ charts/alertmanager-mixin/ci/test-values.yaml | 8 + charts/alertmanager-mixin/templates/NOTES.txt | 4 + .../alertmanager-mixin/templates/_helpers.tpl | 86 ++++++++ .../alertmanager-mixin/templates/alerts.yaml | 135 ++++++++++++ charts/alertmanager-mixin/values.schema.json | 22 ++ charts/alertmanager-mixin/values.yaml | 12 ++ 10 files changed, 567 insertions(+) create mode 100644 charts/alertmanager-mixin/.helmignore create mode 100644 charts/alertmanager-mixin/Chart.yaml create mode 100644 charts/alertmanager-mixin/LICENSE create mode 100644 charts/alertmanager-mixin/README.md create mode 100644 charts/alertmanager-mixin/ci/test-values.yaml create mode 100644 charts/alertmanager-mixin/templates/NOTES.txt create mode 100644 charts/alertmanager-mixin/templates/_helpers.tpl create mode 100644 charts/alertmanager-mixin/templates/alerts.yaml create mode 100644 charts/alertmanager-mixin/values.schema.json create mode 100644 charts/alertmanager-mixin/values.yaml diff --git a/charts/alertmanager-mixin/.helmignore b/charts/alertmanager-mixin/.helmignore new file mode 100644 index 00000000..0e8a0eb3 --- /dev/null +++ b/charts/alertmanager-mixin/.helmignore @@ -0,0 +1,23 @@ +# Patterns to ignore when building packages. +# This supports shell glob matching, relative path matching, and +# negation (prefixed with !). Only one pattern per line. +.DS_Store +# Common VCS dirs +.git/ +.gitignore +.bzr/ +.bzrignore +.hg/ +.hgignore +.svn/ +# Common backup files +*.swp +*.bak +*.tmp +*.orig +*~ +# Various IDEs +.project +.idea/ +*.tmproj +.vscode/ diff --git a/charts/alertmanager-mixin/Chart.yaml b/charts/alertmanager-mixin/Chart.yaml new file mode 100644 index 00000000..97e2a460 --- /dev/null +++ b/charts/alertmanager-mixin/Chart.yaml @@ -0,0 +1,54 @@ +# Copyright (C) 2020 Nicolas Lamirault + +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +apiVersion: v2 +name: alertmanager-mixin +description: A Helm chart for Alertmanager Mixin +home: https://charts.portefaix.xyz +icon: https://upload.wikimedia.org/wikipedia/commons/thumb/3/38/Prometheus_software_logo.svg/242px-Prometheus_software_logo.svg.png +sources: + - https://github.com/nlamirault/portefaix-hub/tree/master/charts/alertmanager-mixin +type: application +keywords: + - alertmanager + - monitoring-mixin + - portefaix + +# This is the chart version. This version number should be incremented each time you make changes +# to the chart and its templates, including the app version. +# Versions are expected to follow Semantic Versioning (https://semver.org/) +version: 0.1.0 + +# This is the version number of the application being deployed. This version number should be +# incremented each time you make changes to the application. Versions are not expected to +# follow Semantic Versioning. They should reflect the version the application is using. +appVersion: 0.22.0 + +maintainers: + - name: nlamirault + email: nicolas.lamirault@gmail.com + +# https://artifacthub.io/docs/topics/repositories/ +annotations: + artifacthub.io/changes: | + - Artifact Hub informations + - Refactoring Prometheus rules configuration + artifacthub.io/links: | + - name: alertmanager + url: https://alertmanager.io + - name: Portefaix + url: https://portefaix.xyz + artifacthub.io/maintainers: | + - name: nlamirault + email: nicolas.lamirault@gmail.com diff --git a/charts/alertmanager-mixin/LICENSE b/charts/alertmanager-mixin/LICENSE new file mode 100644 index 00000000..70a865f1 --- /dev/null +++ b/charts/alertmanager-mixin/LICENSE @@ -0,0 +1,195 @@ + +Apache License +Version 2.0, January 2004 +http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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Check its status by running: + kubectl --namespace {{ template "alertmanager-mixin.namespace" . }} get prometheusrules + +Visit https://github.com/nlamirault/portefaix-hub/charts/alertmanager-mixin. diff --git a/charts/alertmanager-mixin/templates/_helpers.tpl b/charts/alertmanager-mixin/templates/_helpers.tpl new file mode 100644 index 00000000..7919cf47 --- /dev/null +++ b/charts/alertmanager-mixin/templates/_helpers.tpl @@ -0,0 +1,86 @@ +{{/* vim: set filetype=mustache: */}} + +{{/* +Expand the name of the chart. +*/}} +{{- define "alertmanager-mixin.name" -}} +{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }} +{{- end }} + +{{/* +Create a default fully qualified app name. +We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec). +If release name contains chart name it will be used as a full name. +*/}} +{{- define "alertmanager-mixin.fullname" -}} +{{- if .Values.fullnameOverride }} +{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }} +{{- else }} +{{- $name := default .Chart.Name .Values.nameOverride }} +{{- if contains $name .Release.Name }} +{{- .Release.Name | trunc 63 | trimSuffix "-" }} +{{- else }} +{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }} +{{- end }} +{{- end }} +{{- end }} + +{{/* +Create chart name and version as used by the chart label. +*/}} +{{- define "alertmanager-mixin.chart" -}} +{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }} +{{- end }} + +{{/* +Selector labels +*/}} +{{- define "alertmanager-mixin.selectorLabels" -}} +app.kubernetes.io/name: {{ include "alertmanager-mixin.name" . }} +app.kubernetes.io/instance: {{ .Release.Name }} +{{- end }} + +{{/* +Common labels +*/}} +{{- define "alertmanager-mixin.labels" -}} +helm.sh/chart: {{ include "alertmanager-mixin.chart" . }} +{{ include "alertmanager-mixin.selectorLabels" . }} +{{- if .Chart.AppVersion }} +app.kubernetes.io/version: {{ .Chart.AppVersion | quote }} +{{- end }} +app.kubernetes.io/component: monitoring-mixin +app.kubernetes.io/part-of: {{ include "alertmanager-mixin.name" . }} +app.kubernetes.io/managed-by: {{ .Release.Service }} +{{- end }} + +{{/* See: https://ambassadorlabs.github.io/k8s-for-humans/ */}} +{{/* +Common annotations +*/}} +{{- define "alertmanager-mixin.annotations" -}} +a8r.io/description: Monitoring Mixin for alertmanager +a8r.io/owner: portefaix +a8r.io/bugs: https://github.com/portefaix/portefaix-hub/issues +a8r.io/documentation: https://artifacthub.io/packages/helm/portefaix-hub/alertmanager-mixin +a8r.io/repository: https://github.com/portefaix/portefaix-hub +a8r.io/support: https://github.com/portefaix/portefaix-hub/issues +{{- end }} + +{{/* a8r.io/logs: */}} +{{/* a8r.io/runbook: */}} +{{/* a8r.io/incidents: */}} +{{/* a8r.io/uptime */}} +{{/* a8r.io/performance */}} +{{/* a8r.io/dependencies */}} + +{{/* +Allow the release namespace to be overridden +*/}} +{{- define "alertmanager-mixin.namespace" -}} + {{- if .Values.namespaceOverride -}} + {{- .Values.namespaceOverride -}} + {{- else -}} + {{- .Release.Namespace -}} + {{- end -}} +{{- end -}} \ No newline at end of file diff --git a/charts/alertmanager-mixin/templates/alerts.yaml b/charts/alertmanager-mixin/templates/alerts.yaml new file mode 100644 index 00000000..ccff2862 --- /dev/null +++ b/charts/alertmanager-mixin/templates/alerts.yaml @@ -0,0 +1,135 @@ +--- +apiVersion: monitoring.coreos.com/v1 +kind: PrometheusRule +metadata: + name: {{ printf "%s-%s" (include "alertmanager-mixin.fullname" .) "alerts" | trunc 63 | trimSuffix "-" }} + namespace: {{ include "alertmanager-mixin.namespace" . }} + annotations: +{{ include "alertmanager-mixin.annotations" . | indent 4 }} +{{- if .Values.additionalAnnotations }} +{{ toYaml .Values.additionalAnnotations | indent 4 }} +{{- end }} + labels: + app: {{ include "alertmanager-mixin.name" . }} +{{ include "alertmanager-mixin.labels" . | indent 4 }} +{{- if .Values.additionalLabels }} +{{ toYaml .Values.additionalLabels | indent 4 }} +{{- end }} +spec: + groups: + - name: alertmanager.rules + rules: + - alert: AlertmanagerFailedReload + annotations: + description: Configuration has failed to load for {{`{{`}}.instance{{`}}`}}. + summary: Reloading an Alertmanager configuration has failed. + 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{job="alertmanager"}[5m]) == 0 + for: 10m + labels: + severity: critical + - alert: AlertmanagerMembersInconsistent + annotations: + description: Alertmanager {{`{{`}}.instance{{`}}`}} has only found {{`{{`}} $value {{`}}`}} members of the {{`{{`}}.job{{`}}`}} cluster. + summary: A member of an Alertmanager cluster has not found all other cluster members. + 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{job="alertmanager"}[5m]) + < on (job) group_left + count by (job) (max_over_time(alertmanager_cluster_members{job="alertmanager"}[5m])) + for: 10m + labels: + severity: critical + - alert: AlertmanagerFailedToSendAlerts + annotations: + description: Alertmanager {{`{{`}}.instance{{`}}`}} failed to send {{`{{`}} $value | humanizePercentage {{`}}`}} of notifications to {{`{{`}} $labels.integration {{`}}`}}. + summary: An Alertmanager instance failed to send notifications. + expr: | + ( + rate(alertmanager_notifications_failed_total{job="alertmanager"}[5m]) + / + rate(alertmanager_notifications_total{job="alertmanager"}[5m]) + ) + > 0.01 + for: 5m + labels: + severity: warning + - alert: AlertmanagerClusterFailedToSendAlerts + annotations: + description: The minimum notification failure rate to {{`{{`}} $labels.integration {{`}}`}} sent from any instance in the {{`{{`}}.job{{`}}`}} cluster is {{`{{`}} $value | humanizePercentage {{`}}`}}. + summary: All Alertmanager instances in a cluster failed to send notifications to a critical integration. + expr: | + min by (job, integration) ( + rate(alertmanager_notifications_failed_total{job="alertmanager", integration=~`.*`}[5m]) + / + rate(alertmanager_notifications_total{job="alertmanager", integration=~`.*`}[5m]) + ) + > 0.01 + for: 5m + labels: + severity: critical + - alert: AlertmanagerClusterFailedToSendAlerts + annotations: + description: The minimum notification failure rate to {{`{{`}} $labels.integration {{`}}`}} sent from any instance in the {{`{{`}}.job{{`}}`}} cluster is {{`{{`}} $value | humanizePercentage {{`}}`}}. + summary: All Alertmanager instances in a cluster failed to send notifications to a non-critical integration. + expr: | + min by (job, integration) ( + rate(alertmanager_notifications_failed_total{job="alertmanager", integration!~`.*`}[5m]) + / + rate(alertmanager_notifications_total{job="alertmanager", integration!~`.*`}[5m]) + ) + > 0.01 + for: 5m + labels: + severity: warning + - alert: AlertmanagerConfigInconsistent + annotations: + description: Alertmanager instances within the {{`{{`}}.job{{`}}`}} cluster have different configurations. + summary: Alertmanager instances within the same cluster have different configurations. + expr: | + count by (job) ( + count_values by (job) ("config_hash", alertmanager_config_hash{job="alertmanager"}) + ) + != 1 + for: 20m + labels: + severity: critical + - alert: AlertmanagerClusterDown + annotations: + description: '{{`{{`}} $value | humanizePercentage {{`}}`}} of Alertmanager instances within the {{`{{`}}.job{{`}}`}} cluster have been up for less than half of the last 5m.' + summary: Half or more of the Alertmanager instances within the same cluster are down. + expr: | + ( + count by (job) ( + avg_over_time(up{job="alertmanager"}[5m]) < 0.5 + ) + / + count by (job) ( + up{job="alertmanager"} + ) + ) + >= 0.5 + for: 5m + labels: + severity: critical + - alert: AlertmanagerClusterCrashlooping + annotations: + description: '{{`{{`}} $value | humanizePercentage {{`}}`}} of Alertmanager instances within the {{`{{`}}.job{{`}}`}} cluster have restarted at least 5 times in the last 10m.' + summary: Half or more of the Alertmanager instances within the same cluster are crashlooping. + expr: | + ( + count by (job) ( + changes(process_start_time_seconds{job="alertmanager"}[10m]) > 4 + ) + / + count by (job) ( + up{job="alertmanager"} + ) + ) + >= 0.5 + for: 5m + labels: + severity: critical diff --git a/charts/alertmanager-mixin/values.schema.json b/charts/alertmanager-mixin/values.schema.json new file mode 100644 index 00000000..5704ab71 --- /dev/null +++ b/charts/alertmanager-mixin/values.schema.json @@ -0,0 +1,22 @@ +{ + "$schema": "http://json-schema.org/schema#", + "title": "Alertmanager Mixin Chart JSON Schema", + "type": "object", + "properties": { + "fullnameOverride": { + "type": "string", + "default": "" + }, + "additionalLabels": { + "title": "Additional labels to add to the Prometheus rules", + "type": "object", + "default": {} + }, + "additionalAnnotations": { + "title": "Additional annotations to add to the Prometheus rules", + "type": "object", + "default": {} + } + }, + "required": [] +} \ No newline at end of file diff --git a/charts/alertmanager-mixin/values.yaml b/charts/alertmanager-mixin/values.yaml new file mode 100644 index 00000000..56c89e95 --- /dev/null +++ b/charts/alertmanager-mixin/values.yaml @@ -0,0 +1,12 @@ +# Default values for alertmanager-mixin. +# This is a YAML-formatted file. +# Declare variables to be passed into your templates. + +# -- Provide a name to substitute for the full names of resources +fullnameOverride: "" + +# -- Additional labels to add to the Prometheus rules +additionalLabels: {} + +# -- Additional annotations to add to the Prometheus rules +additionalAnnotations: {}