通過上一篇（四）Prometheus + Grafana 可視化 的學習，我們已經對 prometheus 做了一個精美的可視化，本篇詳細講解 Prometheus + Grafana 監控 apache 服務。
準備環境
# 這裏使用的是（四）Prometheus + Grafana 可視化 完成時的環境
centos 7
prometheus 運行正常
grafana 運行正常
[root@fp-21 ~]# getenforce
Permissive
[root@fp-21 ~]# ss -lntp |grep prometheus
LISTEN 0 128 :::9090 :::* users:(("prometheus",pid=10531,fd=6))
[root@fp-21 ~]# ss -lntp |grep grafana
LISTEN 0 128 10.0.0.21:3000 *:* users:(("grafana-server",pid=10690,fd=7))
安裝 Apache
[root@fp-21 ~]# yum -y install httpd
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* epel: mirrors.tuna.tsinghua.edu.cn
……
Dependency Installed:
mailcap.noarch 0:2.1.41-2.el7
Complete!
安裝 Apache exporter 收集 nginx 的 json 數據，點擊下載
# 本地下載也可以
[root@fp-21 ~]# cd /opt/ ; mkdir apache_exporter ; cd apache_exporter
[root@fp-21 apache_exporter]# wget https://github.com/Lusitaniae/apache_exporter/releases/download/v0.5.0/apache_exporter-0.5.0.linux-amd64.tar.gz
[root@fp-21 apache_exporter]# ls
apache_exporter-0.5.0.linux-amd64.tar.gz
# 解壓
[root@fp-21 apache_exporter]# tar xf apache_exporter-0.5.0.linux-amd64.tar.gz
[root@fp-21 apache_exporter]# ls
apache_exporter-0.5.0.linux-amd64 apache_exporter-0.5.0.linux-amd64.tar.gz
# 移動位置
[root@fp-21 apache_exporter]# mv apache_exporter-0.5.0.linux-amd64 /usr/local/apache_exporter
[root@fp-21 apache_exporter]# cd !$
cd /usr/local/apache_exporter
[root@fp-21 apache_exporter]# ls
apache_exporter LICENSE
[root@fp-21 apache_exporter]# cp apache_exporter /usr/local/bin
啓動 apahce 服務
# 啓動
[root@fp-21 apache_exporter]# systemctl start httpd
# 查看進程
[root@fp-21 apache_exporter]# ps -ef |grep httpd
root 15455 1 0 21:06 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 15456 15455 0 21:06 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 15457 15455 0 21:06 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 15458 15455 0 21:06 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 15459 15455 0 21:06 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
apache 15460 15455 0 21:06 ? 00:00:00 /usr/sbin/httpd -DFOREGROUND
root 15462 15029 0 21:07 pts/1 00:00:00 grep --color=auto httpd
# 查看端口
[root@fp-21 apache_exporter]# ss -lntp |grep httpd
LISTEN 0 128 :::80 :::* users:(("httpd",pid=15460,fd=4),("httpd",pid=15459,fd=4),("httpd",pid=15458,fd=4),("httpd",pid=15457,fd=4),("httpd",pid=15456,fd=4),("httpd",pid=15455,fd=4))
啓動 apache_exporter
[root@fp-21 ~]# apache_exporter
INFO[0000] Starting apache_exporter (version=0.5.0, branch=HEAD, revision=f6a5b4814ea795ee9eac745c55649cce9e5117a9) source="apache_exporter.go:305"
INFO[0000] Build context (go=go1.9.2, user=root@0fdc4d8924f5, date=20171113-21:19:13) source="apache_exporter.go:306"
INFO[0000] Starting Server: :9117 source="apache_exporter.go:307"
查看是否啓動成功
[root@fp-21 ~]# ss -lntp |grep 9117
LISTEN 0 128 :::9117 :::* users:(("apache_exporter",pid=15466,fd=3))
添加監控至 Prometheus
[root@fp-21 ~]# vim /usr/local/prometheus/conf/prometheus.yml
35 - job_name: 'apache_status' # 標籤名，監控名
36 static_configs:
37 - targets: ['10.0.0.21:9117'] # IP:端口
查看 Prometheus 狀態
![[外鏈圖片轉存失敗,源站可能有防盜鏈機制,建議將圖片保存下來直接上傳(img-NG5qNLS5-1585663304207)(E:\知識點總結\Prometheus\assets\prometheus_26.png)]](https://pic1.xuehuaimg.com/proxy/csdn/https://img-blog.csdnimg.cn/20200331220354385.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h0bGh4bA==,size_16,color_FFFFFF,t_70#pic_center)
報錯：無法收集到頁面信息
ERRO[0206] Error scraping apache: Status 404 Not Found (404): <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /server-status/ was not found on this server.</p>
</body></html>
source="apache_exporter.go:287"
添加 apache 模板
[root@fp-21 ~]# vim /etc/httpd/conf/httpd.conf
354 LoadModule status_module modules/mod_status.so
355 <location /server-status>
356 SetHandler server-status
357 Order Deny,Allow
358 Deny from nothing
359 Allow from all
360 </location>
訪問測試數據頁面
![[外鏈圖片轉存失敗,源站可能有防盜鏈機制,建議將圖片保存下來直接上傳(img-6U5pi2Kz-1585663304211)(E:\知識點總結\Prometheus\assets\prometheus_27.png)]](https://pic1.xuehuaimg.com/proxy/csdn/https://img-blog.csdnimg.cn/20200331220343124.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3h0bGh4bA==,size_16,color_FFFFFF,t_70#pic_center)
再次啓動
[root@fp-21 ~]# apache_exporter
INFO[0000] Starting apache_exporter (version=0.5.0, branch=HEAD, revision=f6a5b4814ea795ee9eac745c55649cce9e5117a9) source="apache_exporter.go:305"
INFO[0000] Build context (go=go1.9.2, user=root@0fdc4d8924f5, date=20171113-21:19:13) source="apache_exporter.go:306"
INFO[0000] Starting Server: :9117 source="apache_exporter.go:307"
[root@fp-21 ~]# ss -lntp |grep 9117
LISTEN 0 128 :::9117 :::* users:(("apache_exporter",pid=15709,fd=3))
導入 Grafana 模板
