Default collectors
At the time of writing, there are a whopping 49 different collectors that are enabled by default in the Node Exporter. Many of them are either niche (such as dmi) or dependent on your infrastructure (such as filesystem collectors for xfs and zfs). Rather than go through all of them, we’ll take a look at some of the most useful ones to see what info they provide and why you would care about it.
conntrack
The conntrack collector exposes metrics related to the Linux kernel’s netfilter connection tracking subsystem. This is used to keep track of connections established to your server and can cause issues when the table it uses becomes full.
Two commonly used metrics from this collector are as follows:
|
Metric |
Description |
|
|
Current number of entries in the connection tracking table |
