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

categraf 的 conf/input.ping/ping.toml。

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

systemctl edit categraf

Increase the number of open files:

ini

[Service]
LimitNOFILE=8192

Restart Categraf:

systemctl restart categraf

Linux Permissions

On most systems, ping requires CAP_NET_RAW capabilities or for Categraf to be run as root.

With systemd:

systemctl edit categraf

ini

[Service]
CapabilityBoundingSet=CAP_NET_RAW
AmbientCapabilities=CAP_NET_RAW

systemctl restart categraf

Without systemd:

setcap cap_net_raw=eip /usr/bin/categraf

Reference man 7 capabilities for more information about setting capabilities.

Other OS Permissions

When using method = "native", you will need permissions similar to the executable ping program for your OS.