使用Jiralert实现AlertManager告警对接Jira

简介

Alertmanager 处理由客户端应用程序（如 Prometheus server）发送的警报。它负责去重(deduplicating)，分组(grouping)，并将它们路由(routing)到正确的接收器(receiver)集成，如电子邮件，微信，或钉钉。它还负责处理警报的静默/屏蔽(silencing)、定时发送/不发送(Mute)和抑制(inhibition)问题。

AlertManager 作为 开源的为 Prometheus 而设计的告警应用, 已经具备了告警应用各类丰富、灵活、可定制的功能：

• Prometheus AlertManager 系列文章

Jiralert

用于JIRA的Prometheus Alertmanager Webhook Receiver。

JIRAlert实现了Alertmanager的webhook HTTP API，并连接到一个或多个JIRA实例以创建高度可配置的JIRA Issues。每个不同的 Groupkey 创建一个Issue--由Alertmanager的路由配置部分的group_by参数定义--但在警报解决时不会关闭(默认参数, 可调整)。我们的期望是，人们会查看这个issue。，采取任何必要的行动，然后关闭它。如果没有人的互动是必要的，那么它可能首先就不应该报警。然而，这种行为可以通过设置auto_resolve部分进行修改，它将以所需的状态解决jira issue。

如果一个相应的JIRA issue。已经存在，但被解决了，它将被重新打开(reopened)。在解决的状态和重开的状态之间必须存在一个JIRA transition--如reopen_state--否则重开将失败。可以选择定义一个 "won't fix" 的决议(resolution)--由wont_fix_resolution定义：有此决议的JIRA问题将不会被JIRAlert重新打开。

安装 Jiralert

Jiralert 的安装比较简单, 主要由 Deployment、Secret（Jiralert 的配置）和 Service 组成。典型示例如下：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: jiralert
spec:
  selector:
    matchLabels:
      app: jiralert
  template:
    metadata:
      labels:
        app: jiralert
    spec:
      containers:
      - name: jiralert
        image: quay.io/jiralert/jiralert-linux-amd64:latest
        imagePullPolicy: IfNotPresent
        args:
        - "--config=/jiralert-config/jiralert.yml"
        - "--log.level=debug"
        - "--listen-address=:9097"
        readinessProbe:
          tcpSocket:
            port: 9097
          initialDelaySeconds: 15
          periodSeconds: 15
          timeoutSeconds: 5
        livenessProbe:
          tcpSocket:
            port: 9097
          initialDelaySeconds: 15
          periodSeconds: 15
          timeoutSeconds: 5
        ports:
        - containerPort: 9091
          name: metrics
        volumeMounts:
        - mountPath: /jiralert-config
          name: jiralert-config
          readOnly: true
      volumes:
      - name: jiralert-config
        secret:
          secretName: jiralert-config
---
apiVersion: v1
kind: Secret
type: Opaque
metadata:
  name: jiralert-config
stringData:
  jiralert.tmpl: |-
    {{ define "jira.summary" }}[{{ .Status | toUpper }}{{ if eq .Status "firing" }}:{{ .Alerts.Firing | len }}{{ end }}] {{ .GroupLabels.SortedPairs.Values | join "," }}{{ end }}
    
    {{ define "jira.description" }}{{ range .Alerts.Firing }}Labels:
    {{ range .Labels.SortedPairs }} - {{ .Name }} = {{ .Value }}
    {{ end }}
    
    Annotations:
    {{ range .Annotations.SortedPairs }} - {{ .Name }} = {{ .Value }}
    {{ end }}
    
    Source: {{ .GeneratorURL }}
    {{ end }}
    
    CommonLabels:
    {{ range .CommonLabels.SortedPairs }} - {{ .Name }} = {{ .Value}}
    {{ end }}
    
    GroupLabels:
    {{ range .GroupLabels.SortedPairs }} - {{ .Name }} = {{ .Value}}
    {{ end }}
    {{ end }}
  jiralert.yml: |-
    # Global defaults, applied to all receivers where not explicitly overridden. Optional.
    template: jiralert.tmpl
    defaults:
      # API access fields.
      api_url: https://jira.example.com
      user: foo
      password: bar
      # The type of JIRA issue to create. Required.
      issue_type: Bug
      # Issue priority. Optional.
      priority: Major
      # Go template invocation for generating the summary. Required.
      summary: '{{ template "jira.summary" . }}'
      # Go template invocation for generating the description. Optional.
      description: '{{ template "jira.description" . }}'
      # State to transition into when reopening a closed issue. Required.
      reopen_state: "REOPENED"
      # Do not reopen issues with this resolution. Optional.
      wont_fix_resolution: "Won't Fix"
      # Amount of time after being closed that an issue should be reopened, after which, a new issue is created.
      # Optional (default: always reopen)
      # reopen_duration: 30d
    
    # Receiver definitions. At least one must be defined.
    # Receiver names must match the Alertmanager receiver names. Required.
    receivers:
    - name: 'jiralert'
      project: 'YOUR-JIRA-PROJECT'
---
apiVersion: v1
kind: Service
metadata:
  name: jiralert
spec:
  selector:
    app: jiralert
  ports:
  - port: 9097
    targetPort: 9097                

相应 AlertManager 的配置:

...
receivers:
- name: jiralert
  webhook_configs:
  - send_resolved: true
    url: http://jiralert:9097/alert
routes:
- receiver: jiralert
  matchers:
  - severity = critical
  continue: true
...