在Docker容器容器出现错误或CarshLoopBackOff kubernetes时发出警报 [英] Alert when docker container pod is in Error or CarshLoopBackOff kubernetes

问题描述

我在AWS上安装了kubernetes集群，试图使用cAdvisor + Prometheus + Alert Manager监视多个Pod.如果容器/吊舱掉落或卡在Error或CarshLoopBackOff状态或stcuk除运行之外的任何其他状态下，我要执行的操作将启动电子邮件警报(带有服务/容器名称).

I have my kubernetes cluster setup on AWS where I am trying to monitor several pods, using cAdvisor + Prometheus + Alert manager. What I want to do it launch an email alert (with service/container name) if a container/pod goes down or stuck in Error or CarshLoopBackOff state or stcuk in anyother state apart from running.

推荐答案

Prometheus收集

Prometheus collects a wide range of metrics. As an example, you can use a metric kube_pod_container_status_restarts_total for monitoring restarts, which will reflect your problem.

它包含可以在警报中使用的标签:

It containing tags which you can use in the alert:

• container = container-name
• namespace = pod-namespace
• pod = pod-name

• container=container-name
• namespace=pod-namespace
• pod=pod-name

因此，您所需要做的就是配置alertmanager.yaml 配置，方法是添加正确的SMTP设置，收件人和类似的规则:

So, everything you need is to configure your alertmanager.yaml config by adding correct SMTP settings, receiver and rules like that:

global:
  # The smarthost and SMTP sender used for mail notifications.
  smtp_smarthost: 'localhost:25'
  smtp_from: '[e-mail]'
  smtp_auth_username: 'alertmanager'
  smtp_auth_password: 'password'

receivers:
- name: 'team-X-mails'
  email_configs:
  - to: '[e-mail]'

# Only one default receiver
route:
  receiver: team-X-mails

# Example group with one alert
groups:
- name: example-alert
  rules:
    # Alert about restarts
  - alert: RestartAlerts
    expr: count(kube_pod_container_status_restarts_total) by (pod-name) > 5
    for: 10m
    annotations:
      summary: "More than 5 restarts in pod {{ $labels.pod-name }}"
      description: "{{ $labels.container-name }} restarted (current value: {{ $value }}s) times in pod {{ $labels.pod-namespace }}/{{ $labels.pod-name }}"

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