pkg/collector/corechecks/system/disk/disk_nix.go spam in newer version of agents

[kvitaly2005]

Output of the info page (if this is a bug)

EDT | CORE | WARN | (pkg/collector/corechecks/system/disk/disk_nix.go:68 in collectPartitionMetrics) | Unable to get disk metrics of /run/docker/netns/[id] mount point: permission denied

Describe what happened:
After upgrade to 7.32.4 logs are filled with spam from disk_nix.go messages hundreds of the same every minute

Describe what you expected:
I expect logs to be clear as in version 6.18
Adding following blacklists configuration does not help:

/etc/datadog-agent/conf.d/disk.d/conf.yaml
init_config:
instances:

• use_mount: false
  file_system_blacklist:
  • tracefs
    mount_point_blacklist:
  • /sys/kernel/debug/tracing
  • /var/lib/docker/(containers|overlay2)/.*/(shm|merged)
  • /run/docker/netns.*

Steps to reproduce the issue:
Install 7.32.4 on Linux with Docker daemon running.

Additional environment details (Operating System, Cloud provider, etc):
Debian Linux / Docker

[bkabrda]

Hi 👋 thanks for opening the issue. The log line you provided seems to suggest that you're using datadog-iot-agent instead of datadog-agent (the simplified Go version of the check is running instead of the full Python version). Is this correct and intentional?

In between 6.18 and 7.32 we renamed the *_blacklist arguments to *_exclude, so the configuration value you're using will not work in 7.32.4. Now, the way to fix this is slightly different for Python and Go versions of the check.

• For the regular Python version of the check in Agent 7.32.4, as documented, you should use mount_point_exclude instead of mount_point_blacklist.
• Assuming you want to continue using the Go version of the check, in 7.32.x you should use excluded_mountpoint_re, which accepts only a single string value as a regexp (so to transform what you have, you would have to use something like <first_exclude>|<second_exclude>|<third_exclude>).

Let me know if this helps.

[tristanpemble]

the config values excluded_filesystems and excluded_disks are simply not being parsed, I submitted a fix in #13954