Prometheus+Grafana+Alertmanager 开源监控平台部署

Prometheus+Grafana+Alertmanager监控部署

1.环境准备
Prometheus部署
node_export部署
编辑Prometheus.yml
Grafana安装部署
部署Alertmanger

环境准备

阿里云ECS实例*1 4C 8G 系统盘100G 数据盘 300G
Prometheus+Grafana+Alermanager
开启防火墙对应端口 :

# systemctl start firewalld
# firewall-cmd --zone=pubic --add-port=9090/tcp --premanent  #Prometheus端口
# firewall-cmd --zone=pubic --add-port=3000/tcp --premanent  #grafana看板端口
# firewall-cmd --zone=pubic --add-port=9100/tcp --premanent  #node-export 端口 
# firewall-cmd --zone=pubic --add-port=9093/tcp --premanent  # Alermanager 端口
# firewall-cmd --zone=pubic --add-port=9094/tcp --premanent  # Alermanager 端口
# firewall-cmd --reload  #重载防火墙,生效

————————————————

Prometheus部署
下载Prometheus次新稳定版本 : https://prometheus.io/download/
Prometheus基础环境配置

# yum -y install golang nodejs yarn ## yum安装golang不需要可以不需要再/etc/profile配置环境变量

如果使用编译安装,则需要在/etc/profile 设置环境变量,示例:

export GOROOT=/usr/lib/golang 
export GOPATH=/root/Work/programmer/go/gopath/ 
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin

2、解压Prometheus的tar包,我这里下载的是2.26

# tar -zxvf prometheus-2.26.0.linux-amd64.tar.gz
# mv prometheus-2.26.0.linux-amd64 /usr/local/

3、运行Prometheus有两种方式
1)使用nohup ./prometheus >> out.log &
但是使用nohup 如果需要关闭或重启Prometheus,需要ps -aux | grep prometheus 查询Prometheus进程的PID ,手动kill -9 进行关闭进程

2)编写system文件

# vim /usr/lib/systemd/system/prometheus.service
[Unit]
Description=Prometheus
Documentation=https://prometheus.io/
After=network.target

[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/prometheus-2.26.0.linux-amd64/prometheus --config.file=/usr/local/prometheus-2.26.0.linux-amd64/prometheus.yml --storage.tsdb.path=/var/lib/prometheus --storage.tsdb.retention=180d --web.enable-admin-api    
# storage.tsdb.path手动指定Prometheus的存储位置  config.file指定Prometheus的配置文件  ExecStart指定Prometheus运行文件 
Restart=on-failure

[Install]
WantedBy=multi-user.target

配置完system文件之后
systemctl start prometheus
systemctl enable prometheus

node-export 部署
开启Prometheus node端
下载 node_exporter-1.1.2.linux-amd64.tar.gz Linux监控node端
下载地址: https://github.com/prometheus/node_exporter

# tar -zxvf node_exporter-1.1.2.linux-amd64.tar.gz
# mv /usr/local/node_exporter-1.1.2.linux-amd64
# cd /usr/local/node_exporter-1.1.2.linux-amd64
# nohup ./node_exporter >> out.log &

编辑Prometheus.yml
编辑Prometheus.yml 文件

# vim /usr/local/prometheus-2.26.0.linux-amd64/prometheus.yml
scrape_configs:
  - job_name: 'prometheus'
    static_configs:
    - targets: ['localhost:9090']
  - job_name: Linux_export
    static_configs:
    - targets: ['localhost:9100']

之后重启Prometheus

systemctl restart prometheus

访问 localhost:9090 查看Prometheus状态
Prometheus+Grafana+Alertmanager 开源监控平台部署

Grafana 安装部署
下载grafana安装包

https://grafana.com/grafana/dow

yum localinstall grafana-7.3.6-1.x86_64.rpm

# systemctl start grafana
# systemctl enable grafana

启动grafana后,访问
localhost:3000 (默认端口3000) 查看grfana面板

grafana默认密码 admin admin 第一次登陆需要修改密码
Prometheus+Grafana+Alertmanager 开源监控平台部署
部署Alertmanger 告警
下载alermanager告警组件

https://prometheus.io/docs/alerting/latest/alertmanager/

这边用的是0.20.0版本

# tar -zxvf alertmanager-0.20.0.linux-amd64.tar.gz
# mv alertmanager-0.20.0.linux-amd64 /usr/local/alertmanager
# vim /usr/local/alertmanager/alertmanager.yml

global:
  resolve_timeout: 5m
  smtp_smarthost: 'smtp.163.com:465'
  smtp_from: 'xxxxxxxxx@163.com'
  smtp_auth_username: 'xxxxxxxx@163.com'
  smtp_auth_password: 'xxxxxxxxxxxxxxx'
  smtp_require_tls: false

templates:
  - '/alertmanager/template/*.tmpl'

route:
  group_by: ['alertname']
  group_wait: 30s
  group_interval: 5m
  repeat_interval: 10m
  receiver: 'mail'
  receivers:
- name: 'mail'
  email_configs:
  - to: 'xxxxxxxxx@xxx.com'

inhibit_rules:
  - source_match:
      severity: 'critical'
    target_match:
      severity: 'warning'
    equal: ['alertname', 'dev', 'instance']


编辑system文件

 # vim /usr/lib/systemd/system/alertmanager.service
 [Unit]
Description=alertmanager
Documentation=https://github.com/prometheus/alertmanager
After=network.target
[Service]
Type=simple
User=prometheus
ExecStart=/usr/local/alertmanager/alertmanager --config.file=/usr/local/alertmanager/alertmanager.yml
Restart=on-failure
[Install]
WantedBy=multi-user.target

systemctl start alermanage
systemctl enable alermanage

编辑Prometheus.yml 文件

# vim /usr/local/prometheus-2.26.0.linux-amd64/prometheus.yml

alerting:
  alertmanagers:
  - static_configs:
    - targets:
      - localhost:9093   #指定本地alermanage端口
'evaluation_interval'.
rule_files:
  -  "/usr/local/prometheus-2.26.0.linux-amd64/rule/*.yml"  #在Prometheus下定制的规则将用于告警

之后再Prometheus目录下,创建一个rule文件夹,将定义规则的 .yml文件 放入rule文件夹中 实现告警

以下以告警组件状态为例:

# cd /usr/local/prometheus-2.26.0.linux-amd64/rule/
# vim nodestatus_rule.yml

groups:
- name: alert-rules.yml
  rules:
  - alert: InstanceStatus
    expr: up == 0
    for: 10s
    labels:
      severity: "critical"
    annotations:
      summary: "主机 {{ $labels.instance }} 无响应"
      description: "{{ $labels.instance }} 无响应 (当前值: {{ $value }}) "


之后重启Prometheus,就可以正常告警了

systemctl restart prometheus

如果想验证告警是否成功,可以手动关闭 node-export 验证是否有告警邮件发出

ps -aux | grep node

kill -9 PID

感谢观看,您的点赞是对我最大的支持
后续会陆续更新如何监控nginx、tomcat、MySQL、Oracle

以后会继续更新ansible相关教程。

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