add ping readme

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Ulric Qin 2022-06-13 16:40:36 +08:00
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### File Limit
# ping
ping 监控插件,探测远端目标地址能否 ping 通,如果机器没有禁 ping这就是一个很好用的探测机器存活的手段
## Configuration
要探测的机器配置到 targets 中targets 是个数组,可以配置多个,当然也可以拆成多个 `[[instances]]` 配置段,比如:
```
[[instances]]
targets = [ "10.4.5.6" ]
labels = { region="cloud", product="n9e" }
[[instances]]
targets = [ "10.4.5.7" ]
labels = { region="cloud", product="zbx" }
```
上例中是 ping 两个地址,为了信息更丰富,附加了 region 和 product 标签
## File Limit
```sh
systemctl edit categraf