/data/alertmanager/alertmanager.yml文件，将原配置删除，加入如下内容并重启alertmanger服务~~~yaml
global:
# 在没有报警的情况下声明为已解决的时间
resolve_timeout: 5m
# 配置邮件发送信息
smtp_smarthost: 'smtp.163.com:25'
# 邮箱地址
smtp_from: 'youremail@163.com'
# 邮箱地址
smtp_auth_username: 'youremail@163.com'
# 邮箱授权码，需要自行开启设置，非邮箱密码
smtp_auth_password: 'xxxxxxxx'
# 邮箱地址
smtp_hello: 'youremail@163.com'
smtp_require_tls: false
route:
# 接收到告警后到自定义分组
group_by: ["alertname"]
# 分组创建后初始化等待时长
group_wait: 10s
# 告警信息发送之前的等待时长
group_interval: 30s
# 重复报警的间隔时长
repeat_interval: 5m
# 默认消息接收
receiver: "email"
receivers:
# 邮件
- name: 'email'
email_configs:
- to: 'your email'
send_resolved: true
~~~
alert_rules.yaml配置文件，内容如下~~~yaml
groups:
- name: alert_rules
rules:
- alert: CpuUsageAlertWarning
expr: sum(avg(irate(node_cpu_seconds_total{mode!='idle'}[5m])) without (cpu)) by (instance) > 0.60
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} CPU usage high"
description: "{{ $labels.instance }} CPU usage above 60% (current value: {{ $value }})"
- alert: CpuUsageAlertSerious
#expr: sum(avg(irate(node_cpu_seconds_total{mode!='idle'}[5m])) without (cpu)) by (instance) > 0.85
expr: (100 - (avg by (instance) (irate(node_cpu_seconds_total{job=~".*",mode="idle"}[5m])) * 100)) > 85
for: 3m
labels:
level: serious
annotations:
summary: "Instance {{ $labels.instance }} CPU usage high"
description: "{{ $labels.instance }} CPU usage above 85% (current value: {{ $value }})"
- alert: MemUsageAlertWarning
expr: avg by(instance) ((1 - (node_memory_MemFree_bytes + node_memory_Buffers_bytes + node_memory_Cached_bytes) / node_memory_MemTotal_bytes) * 100) > 70
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} MEM usage high"
description: "{{$labels.instance}}: MEM usage is above 70% (current value is: {{ $value }})"
- alert: MemUsageAlertSerious
expr: (node_memory_MemTotal_bytes - node_memory_MemAvailable_bytes)/node_memory_MemTotal_bytes > 0.90
for: 3m
labels:
level: serious
annotations:
summary: "Instance {{ $labels.instance }} MEM usage high"
description: "{{ $labels.instance }} MEM usage above 90% (current value: {{ $value }})"
- alert: DiskUsageAlertWarning
expr: (1 - node_filesystem_free_bytes{fstype!="rootfs",mountpoint!="",mountpoint!~"/(run|var|sys|dev).*"} / node_filesystem_size_bytes) * 100 > 80
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} Disk usage high"
description: "{{$labels.instance}}: Disk usage is above 80% (current value is: {{ $value }})"
- alert: DiskUsageAlertSerious
expr: (1 - node_filesystem_free_bytes{fstype!="rootfs",mountpoint!="",mountpoint!~"/(run|var|sys|dev).*"} / node_filesystem_size_bytes) * 100 > 90
for: 3m
labels:
level: serious
annotations:
summary: "Instance {{ $labels.instance }} Disk usage high"
description: "{{$labels.instance}}: Disk usage is above 90% (current value is: {{ $value }})"
- alert: NodeFileDescriptorUsage
expr: avg by (instance) (node_filefd_allocated{} / node_filefd_maximum{}) * 100 > 60
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} File Descriptor usage high"
description: "{{$labels.instance}}: File Descriptor usage is above 60% (current value is: {{ $value }})"
- alert: NodeLoad15
expr: avg by (instance) (node_load15{}) > 80
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} Load15 usage high"
description: "{{$labels.instance}}: Load15 is above 80 (current value is: {{ $value }})"
- alert: NodeAgentStatus
expr: avg by (instance) (up{}) == 0
for: 2m
labels:
level: warning
annotations:
summary: "{{$labels.instance}}: has been down"
description: "{{$labels.instance}}: Node_Exporter Agent is down (current value is: {{ $value }})"
- alert: NodeProcsBlocked
expr: avg by (instance) (node_procs_blocked{}) > 10
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} Process Blocked usage high"
description: "{{$labels.instance}}: Node Blocked Procs detected! above 10 (current value is: {{ $value }})"
- alert: NetworkTransmitRate
#expr: avg by (instance) (floor(irate(node_network_transmit_bytes_total{device="ens192"}[2m]) / 1024 / 1024)) > 50
expr: avg by (instance) (floor(irate(node_network_transmit_bytes_total{}[2m]) / 1024 / 1024 * 8 )) > 40
for: 1m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} Network Transmit Rate usage high"
description: "{{$labels.instance}}: Node Transmit Rate (Upload) is above 40Mbps/s (current value is: {{ $value }}Mbps/s)"
- alert: NetworkReceiveRate
#expr: avg by (instance) (floor(irate(node_network_receive_bytes_total{device="ens192"}[2m]) / 1024 / 1024)) > 50
expr: avg by (instance) (floor(irate(node_network_receive_bytes_total{}[2m]) / 1024 / 1024 * 8 )) > 40
for: 1m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} Network Receive Rate usage high"
description: "{{$labels.instance}}: Node Receive Rate (Download) is above 40Mbps/s (current value is: {{ $value }}Mbps/s)"
- alert: DiskReadRate
expr: avg by (instance) (floor(irate(node_disk_read_bytes_total{}[2m]) / 1024 )) > 200
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} Disk Read Rate usage high"
description: "{{$labels.instance}}: Node Disk Read Rate is above 200KB/s (current value is: {{ $value }}KB/s)"
- alert: DiskWriteRate
expr: avg by (instance) (floor(irate(node_disk_written_bytes_total{}[2m]) / 1024 / 1024 )) > 20
for: 2m
labels:
level: warning
annotations:
summary: "Instance {{ $labels.instance }} Disk Write Rate usage high"
description: "{{$labels.instance}}: Node Disk Write Rate is above 20MB/s (current value is: {{ $value }}MB/s)"
~~~
prometheys.yaml,最上方三个节点改为如下配置，执行curl -XPOST localhost:9090/-/reload刷新配置注意⚠️：若prometheus为docker部署的服务，则需要关闭后重新启动，同时使用 -v 挂载目录才会读取到rules文件
~~~yaml
global:
scrape_interval: 15s
evaluation_interval: 15s
alerting:
alertmanagers:
- static_configs:
# alertmanager服务地址
- targets: ['11x.xx.x.7:9093']
rule_files:
- "alert_rules.yml"
~~~
~~~shell
[root@JD ~]# docker stop mysqld-exporter
~~~
