OpenWrt安装prometheus监控

英文参考：Monitor OpenWrt nodes with Prometheus | cloudrocket

一、修改Openwrt源

1. 更换为Openwrt为官方源：（自己确定自己的系统版本：按照URL自己去查看替换即可Index of /releases/ (openwrt.org)）

   src/gz openwrt_core https://downloads.openwrt.org/snapshots/targets/x86/64/packages
   src/gz openwrt_base https://downloads.openwrt.org/snapshots/packages/x86_64/base
   src/gz openwrt_luci https://archive.openwrt.org/releases/packages-18.06/x86_64/luci
   src/gz openwrt_packages https://downloads.openwrt.org/snapshots/packages/x86_64/packages
   src/gz openwrt_routing https://downloads.openwrt.org/snapshots/packages/x86_64/routing
   src/gz openwrt_telephony https://downloads.openwrt.org/snapshots/packages/x86_64/telephony

2. 设置源archive.openwrt.org走代理（否则有些地方无法访问，请根据自己网络环境设置）
   

3. 更新源：opkg update：部分更新失败，可能由于网络问题，稍后重试
   

二、安装Prometheus脚本

1. 安装

• opkg install prometheus-node-exporter-lua
• opkg install prometheus-node-exporter-lua-nat_traffic
• opkg install prometheus-node-exporter-lua-netstat
• opkg install prometheus-node-exporter-lua-openwrt
• opkg install prometheus-node-exporter-lua-wifi
• opkg install prometheus-node-exporter-lua-wifi_stations

2. 配置脚本网络

• 查看自己的网卡配置：vi /etc/config/network
  
• 修改替换监控网络

  sed -i.bak 's#loopback#lan#g' /etc/config/prometheus-node-exporter-lua

• 检查是否修改成功：cat prometheus-node-exporter-lua
  
• 重新启动脚本：/etc/init.d/prometheus-node-exporter-lua restart

三、检查是否安装成功

1. 检查网络监听是否开启：netstat -tulpn | grep 9100
   

2. 查看脚本配置是否启动：ps | grep prometheus
   

3. 使用端口扫描工具nmap检查端口：nmap 你的路由ip -p 9100
   

4. 使用curl获取监控数据：curl 192.168.0.2:9100/metrics

   # TYPE node_scrape_collector_duration_seconds gauge
   # TYPE node_scrape_collector_success gauge
   # TYPE node_nf_conntrack_entries gauge
   node_nf_conntrack_entries 1819
   # TYPE node_nf_conntrack_entries_limit gauge
   node_nf_conntrack_entries_limit 65535
   node_scrape_collector_duration_seconds{collector="conntrack"} 0.0001680850982666
   node_scrape_collector_success{collector="conntrack"} 1
   # TYPE node_boot_time_seconds gauge
   node_boot_time_seconds 1662694233
   # TYPE node_context_switches_total counter
   node_context_switches_total 54301646
   # TYPE node_cpu_seconds_total counter
   node_cpu_seconds_total{cpu="cpu0",mode="user"} 2126.74
   node_cpu_seconds_total{cpu="cpu0",mode="nice"} 340.49
   node_cpu_seconds_total{cpu="cpu0",mode="system"} 2844.26
   node_cpu_seconds_total{cpu="cpu0",mode="idle"} 273454.86
   node_cpu_seconds_total{cpu="cpu0",mode="iowait"} 3.12
   node_cpu_seconds_total{cpu="cpu0",mode="irq"} 0
   node_cpu_seconds_total{cpu="cpu0",mode="softirq"} 11707.05
   node_cpu_seconds_total{cpu="cpu0",mode="steal"} 4301.32
   node_cpu_seconds_total{cpu="cpu0",mode="guest"} 0
   node_cpu_seconds_total{cpu="cpu0",mode="guest_nice"} 0
   node_cpu_seconds_total{cpu="cpu1",mode="user"} 2203.07
   node_cpu_seconds_total{cpu="cpu1",mode="nice"} 339.14
   node_cpu_seconds_total{cpu="cpu1",mode="system"} 2590.75
   node_cpu_seconds_total{cpu="cpu1",mode="idle"} 272803.85
   node_cpu_seconds_total{cpu="cpu1",mode="iowait"} 8
   node_cpu_seconds_total{cpu="cpu1",mode="irq"} 0
   node_cpu_seconds_total{cpu="cpu1",mode="softirq"} 12972.49
   node_cpu_seconds_total{cpu="cpu1",mode="steal"} 3867.58
   node_cpu_seconds_total{cpu="cpu1",mode="guest"} 0
   node_cpu_seconds_total{cpu="cpu1",mode="guest_nice"} 0
   # TYPE node_intr_total counter
   node_intr_total 554010900
   # TYPE node_forks_total counter
   node_forks_total 804483
   # TYPE node_procs_running_total gauge
   node_procs_running_total 2
   # TYPE node_procs_blocked_total gauge
   node_procs_blocked_total 0
   node_scrape_collector_duration_seconds{collector="cpu"} 0.00092601776123047
   node_scrape_collector_success{collector="cpu"} 1
   # TYPE node_entropy_available_bits gauge
   node_entropy_available_bits 3413
   
   # TYPE node_entropy_pool_size_bits gauge
   node_entropy_pool_size_bits 4096
   ......

上面检查无误即配置成功！

四、配置Grafana

导入模板：11147 -> OpenWRT | Grafana Labs