How to monitor used space on partitions?

[cjacobm]

Hi,

I My fluent-bit.conf I have:

[INPUT]
Name disk
tag disk.local
Interval_Sec 5

But, my output is this:
disk.local: [1678020620.794262218, {"read_size"=>0, "write_size"=>1146880}]

How to monitor used space on partitions? The disk´s input not support this feature?

Thank You!

[leonardo-albertovich]

You can get that from node_exporter_metrics with this configuration :

[SERVICE]
    flush 1
    grace 1
    log_level info

[INPUT]
    name node_exporter_metrics
    # If you are running 2.0 you cannot filter which metrics are produced
    # but if you are running master you can uncomment the following line in 
    # order to get just the filesystem stats
    #metrics filesystem

[OUTPUT]
    name stdout
    match *

Just keep in mind that those are metrics, not logs.

[cjacobm]

It worked! Thank you very much!

[aspantel]

For some reason, node_exporter_metrics does not produce any metrics for me on Ubuntu.
How can I debug this? Thank you

[patrick-stephens]

Turn on debug log_level, check for warnings: https://chronosphere.io/learn/fluent-bit-tips-tricks/#Warnings%20are%20errors

Check permissions for /proc.
How are you running it - container/package? What's the config?

[aspantel]

No container is involved here, fluentbit was installed using apt on Ubuntu and is run using sysctl
All my inputs work fine (i.e. exec below) except the node_exporter_metrics. I have this config on 7,8 virtual servers and they all have this problem.

[INPUT]
name node_exporter_metrics
tag node_metrics
metrics "meminfo,filesystem"

[INPUT]
Name          exec
Tag           disk_space
Command       df --output=avail,pcent,target --type=ext4
Interval_Sec  60
Interval_NSec 0

[OUTPUT]
Name            http
Match           *
Host            api.axiom.co
Port            443

...

/proc permissions dr-xr-xr-x 192 root root

[aspantel]

[ info] [input:node_exporter_metrics:node_exporter_metrics.3] thread instance initialized
[router] match rule node_exporter_metrics.3:http.0

[aspantel]

I see this but I don't know if it's related to node_exporter_metrics

[debug] [task] created task=0x7f6925c37860 id=1 without routes, dropping.