Prometheus apache_exporter 监控配置

Prometheus apache_exporter 监控配置

在安装apache_exporter之前，首先得保证Apache有mod_status这个模块

#修改Apache的配置文件：httpd-info.conf
vim /usr/local/apache/conf/extra/httpd-info.conf
<Location /server-status>
    SetHandler server-status
    Order deny,allow
    allow from all
    AuthType Basic
    AuthName 'Apache Server Status'
    AuthUserFile '/usr/local/apache/conf/.htpasswd'
    Require valid-user
</Location>
 
<Location /server-info>
    SetHandler server-status
    Order deny,allow
    allow from all
    AuthType Basic
    AuthName 'Apache Server Status'
    AuthUserFile '/usr/local/apache/conf/.htpasswd'
    Require valid-user
</Location>

• 由于Apache服务信息属于敏感信息，需配置用户身份证

  htpasswd -c -m /usr/local/apache/conf/.htpasswd hdkj

• 接下来正式安装apache_exporter

• 创建一个临时目录

• $ mkdir /tmp/go

• 设置环境变量

• $ export GOPATH=/tmp/go

• 进入临时目录使用go命令从远程仓库获取apache_exporter

• $ cd /tmp/go

• $ go get -u github.com/Lusitaniae/apache_exporter

• 查看一下下载好的apache_exporter

• ll src/github.com/Lusitaniae/apache_exporter/

• 使用make命令编译源代码

• 编译完成之后，将生成的apache_exporter拷贝至安装目录

配置启动服务：

• vim /usr/lib/systemd/system/apache_exporter.service

  [Unit]
  Description=Prometheus apache exporter
  Documentation=https://github.com/Lusitaniae/apache_exporter
  After=network.target
  ​
  [Service]
  ​
  Type=simple
  ​
  ExecStart=/usr/local/apache_exporter/apache_exporter --scrape_uri=http://hdkj:HDkj123456@localhost/server-status?auto
  Restart=on-failure
  ​
  [Install]
  WantedBy=multi-user.target

   

• 启动一下服务

• systemctl start apache_exporter

• ss -tnl | grep 9117 #如果端口9117存在，说明服务启动成功；

在Promethus配置文件中加入apache_exporter

job_name: 'apache_exporter'
metrics_path: "/metrics"
static_configs:
​
- targets: ['192.168.8.133:9117']
  labels:
    instance: '192.168.8.133:9117'
​
- targets: ['192.168.8.134:9117']
  labels:
    instance: '192.168.8.134:9117'

 

配置监控规则：

groups:
​
- name: apache_exporter_alerts
  rules:
    - alert: ApacheWorkerStatus
      expr: apache_workers{state="busy"} > 320
      for: 30s
      labels:
        severity: warning
      annotations:
        summary: "ApacheWorkerStatus (instance {{ $labels.instance }})"
        description: "Apache worker status is busy more than 80%
  VALUE = {{ $value }}
  LABELS: {{ $labels }}"
​
    - alert: ApacheConnectionsStatus
      expr: apache_connections{state="total"} > 1000
      for: 30s
      labels:
        severity: warning
      annotations:
        summary: "Apache Connection Statuses (instance {{ $labels.instance }})"
        description: "Apache Connections  Is Too many 
  VALUE = {{ $value }}
  LABELS: {{ $labels }}"
​
    - alert: Apache Service
      expr: apache_up == 0
      for: 30s
      labels:
        severity: error
      annotations:
        summary: "ApacheServiceStatuses (instance {{ $labels.instance }})"
        description: "Apache Service Is Not Work;Please Connect Ops Group Quick Deal With 
  VALUE = {{ $value }}
  LABELS: {{ $labels }}"