Prometheus 企业微信报警/inhibit抑制 /静默(二)

创建企业微信应用

注册企业微信:访问https://work.weixin.qq.com/,注册企业,随便填,不需要认证

创建应用

Prometheus 企业微信报警/inhibit抑制 /静默(二)

Prometheus 企业微信报警/inhibit抑制 /静默(二)

Prometheus 企业微信报警/inhibit抑制 /静默(二)

Prometheus 企业微信报警/inhibit抑制 /静默(二)

创建告警配置

vim /usr/local/prometheus-2.1/rule2.yml
groups:
- name: cluster
rules:
- alert: HIGHCPU
expr: (1-irate(node_cpu_seconds_total{mode="idle",job="export_test2"}[1m]))*100 > 10
for: 5s
labels:
for: 'highcpu'
annotations:
description: CPU MORE THAN 10%
summary: 'cpu more than 10%'

在Prometheus的配置中添加以上规则

vim /usr/local/prometheus-2.1/prometheus.yml
rule_files:
- "/usr/local/prometheus-2.1/rule.yml"
- "/usr/local/prometheus-2.1/rule2.yml" #添加此规则

创建报警策略

 vim /usr/local/alertmanager-0.15.2/alertmanager.yml
global:
wechat_api_corp_id: 'ww0cxxxxf5b5'
wechat_api_url: 'https://qyapi.weixin.qq.com/cgi-bin/'
wechat_api_secret: 'K4jHxxxxxxxL4_4Xj-lvQ' route:
group_by: ['alertname']
group_wait: 10s
group_interval: 5s
repeat_interval: 10s
receiver: 'weixin'
routes:
- receiver: 'weixin'
match:
severity: 'critical'
- receiver: 'weixin'
match:
for: 'highcpu'
receivers:
- name: 'weixin'
wechat_configs:
- send_resolved: true #告警恢复发送通知
to_party: '1'
agent_id: '1000003'
corp_id: 'ww0cxxxxf5b5'
api_url: 'https://qyapi.weixin.qq.com/cgi-bin/'
api_secret: 'K4jHxxxxxxxL4_4Xj-lvQ'

corp_id :在企业微信中我的企业 --> 企业信息 --> 企业ID

agent_id 与 api_secret :点击创建的应用Prometheus,可以看到AgentId 与 Secret

to_party:是指发送信息的部门ID

api_url : 企业微信地址

Prometheus 企业微信报警/inhibit抑制 /静默(二)

重启prometheus 与 alertmanager 服务

测试

在被监控机上拉高cpu

cat /dev/urandom | md5sum

企业微信收到告警信息

[FIRING:1] HIGHCPU (0 highcpu node2 export_test2 idle)
CPU MORE THAN 10% cpu more than 10%
Alerts Firing:
Labels:
- alertname = HIGHCPU
- cpu = 0
- for = highcpu
- instance = node2
- job = export_test2
- mode = idle
Annotations:
- description = CPU MORE THAN 10%
- summary = cpu more than 10%
Source: http://centos1.com:9090/graph?g0.expr=%281+-+irate%28node_cpu_seconds_total%7Bjob%3D%22export_test2%22%2Cmode%3D%22idle%22%7D%5B1m%5D%29%29+%2A+100+%3E+10&g0.tab=1 AlertmanagerUrl:
http://centos1.com:9093/#/alerts?receiver=weixin

cpu恢复,收到通知信息

[RESOLVED] HIGHCPU (0 highcpu node2 export_test2 idle)
CPU MORE THAN 10% cpu more than 10% Alerts Resolved:
Labels:
- alertname = HIGHCPU
- cpu = 0
- for = highcpu
- instance = node2
- job = export_test2
- mode = idle
Annotations:
- description = CPU MORE THAN 10%
- summary = cpu more than 10%
Source: http://centos1.com:9090/graph?g0.expr=%281+-+irate%28node_cpu_seconds_total%7Bjob%3D%22export_test2%22%2Cmode%3D%22idle%22%7D%5B1m%5D%29%29+%2A+100+%3E+10&g0.tab=1 AlertmanagerUrl:
http://centos1.com:9093/#/alerts?receiver=weixin

注:如果你的企业微信收不到告警信息,并坚信配置没有问题,那么可以重新注册一个企业微信试试。

抑制规则试用

注:本文中配置抑制的两个监控项没有直接逻辑联系,纯属测试抑制功能

添加新的告警配置

vim /usr/local/prometheus-2.1/rule2.yml  在尾部添加以下配置
- name: test
rules:
- alert: go_goroutines
expr: go_goroutines{instance="node2",job="export_test2"} > 5
for: 10s
labels:
severity: 'warning'
annotations:
description: go_goroutines > 5

添加以上规则的通知方式与抑制配置

vim /usr/local/alertmanager-0.15.2/alertmanager.yml
global:
wechat_api_corp_id: 'ww0xxxxxxx5b5'
wechat_api_url: 'https://qyapi.weixin.qq.com/cgi-bin/'
wechat_api_secret: 'K4jH8xxxxxxxxxxxXj-lvQ' #templates:
# - '/alertmanager/template/wechat.tmpl' route:
group_by: ['alertname']
group_wait: 10s
group_interval: 5s
repeat_interval: 10s
receiver: 'weixin'
routes:
- receiver: 'weixin'
match:
severity: 'critical'
- receiver: 'weixin'
match:
for: 'highcpu'
- receiver: 'weixin' #新添加通知方式(三行)
match:
severity: 'warning'
receivers:
- name: 'weixin'
wechat_configs:
- send_resolved: true
to_party: '1'
agent_id: '1000003'
corp_id: 'ww0xxxxxxxxx5b5'
api_url: 'https://qyapi.weixin.qq.com/cgi-bin/'
api_secret: 'K4jH8xxxxxxxxxxxxxxxxxxxXj-lvQ' inhibit_rules: #新添加抑制规则
- source_match:
for: 'highcpu'
target_match:
severity: 'warning'
equal: ['instance','job']

实现效果为:当cpu与go_goroutines都满足告警条件,cpu发出告警,go_goroutines被抑制

当已经发送的告警通知匹配到target_match和target_match_re规则,当有新的告警规则如果满足source_match或者定义的匹配规则,并且以发送的告警与新产生的告警中equal定义的标签完全相同,则启动抑制机制,新的告警不会发送。

静默规则试用

在alertmanager的web界面创建临时静默规则,将label为 for:highcpu 的告警静默,web界面 silences --> New Silence

注:以下start与end使用的是UTC时间,比北京时间晚8h

Prometheus 企业微信报警/inhibit抑制 /静默(二)

Prometheus 企业微信报警/inhibit抑制 /静默(二)

添加静默规则后在指定时间段内不再收到label为 for:highcpu 的告警信息。

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