Prometheus apache_exporter 監控配置

Prometheus apache_exporter 監控配置

在安裝apache_exporter之前，首先得保證Apache有mod_status這個模塊

#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>

• 由於Apache服務信息屬於敏感信息，需配置用戶身份證

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

• 接下來正式安裝apache_exporter

• 創建一個臨時目錄

• $ mkdir /tmp/go

• 設置環境變量

• $ export GOPATH=/tmp/go

• 進入臨時目錄使用go命令從遠程倉庫獲取apache_exporter

• $ cd /tmp/go

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

• 查看一下下載好的apache_exporter

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

• 使用make命令編譯源代碼

• 編譯完成之后，將生成的apache_exporter拷貝至安裝目錄

配置啟動服務：

• 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

   

• 啟動一下服務

• systemctl start apache_exporter

• ss -tnl | grep 9117 #如果端口9117存在，說明服務啟動成功；

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'

 

配置監控規則：

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%\n VALUE = {{ $value }}\n 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 \n VALUE = {{ $value }}\n 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 \n VALUE = {{ $value }}\n LABELS: {{ $labels }}"