Unable to get disk metrics for /sys/kernel/debug/tracing: [Errno 13] Permission denied: '/sys/kernel/debug/tracing'

[SaloSentinelOne]

integrations-core/disk/datadog_checks/disk/disk.py

Line 63 in c9f7ce4

for part in psutil.disk_partitions(all=True):

>>> import psutil
>>> 
>>> psutil.disk_partitions(all=True)
[
sdiskpart(device='sysfs', mountpoint='/sys', fstype='sysfs', opts='rw,nosuid,nodev,noexec,relatime'), 
sdiskpart(device='proc', mountpoint='/proc', fstype='proc', opts='rw,nosuid,nodev,noexec,relatime'),
sdiskpart(device='udev', mountpoint='/dev', fstype='devtmpfs', opts='rw,nosuid,relatime,size=65254592k,nr_inodes=16313648,mode=755'),
sdiskpart(device='devpts', mountpoint='/dev/pts', fstype='devpts', opts='rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000'),
sdiskpart(device='tmpfs', mountpoint='/run', fstype='tmpfs', opts='rw,nosuid,noexec,relatime,size=13053332k,mode=755'),
sdiskpart(device='/dev/nvme0n1p2', mountpoint='/', fstype='ext4', opts='rw,relatime,data=ordered'),
sdiskpart(device='securityfs', mountpoint='/sys/kernel/security', fstype='securityfs', opts='rw,nosuid,nodev,noexec,relatime'),
sdiskpart(device='tmpfs', mountpoint='/dev/shm', fstype='tmpfs', opts='rw,nosuid,nodev'),
sdiskpart(device='tmpfs', mountpoint='/run/lock', fstype='tmpfs', opts='rw,nosuid,nodev,noexec,relatime,size=5120k'),
sdiskpart(device='tmpfs', mountpoint='/sys/fs/cgroup', fstype='tmpfs', opts='ro,nosuid,nodev,noexec,mode=755'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/systemd', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd'),
sdiskpart(device='pstore', mountpoint='/sys/fs/pstore', fstype='pstore', opts='rw,nosuid,nodev,noexec,relatime'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/cpu,cpuacct', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,cpu,cpuacct'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/pids', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,pids'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/devices', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,devices'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/blkio', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,blkio'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/freezer', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,freezer'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/perf_event', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,perf_event'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/memory', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,memory'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/cpuset', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,cpuset'),
sdiskpart(device='cgroup', mountpoint='/sys/fs/cgroup/net_cls,net_prio', fstype='cgroup', opts='rw,nosuid,nodev,noexec,relatime,net_cls,net_prio'),
sdiskpart(device='systemd-1', mountpoint='/proc/sys/fs/binfmt_misc', fstype='autofs', opts='rw,relatime,fd=29,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=13040'),
sdiskpart(device='mqueue', mountpoint='/dev/mqueue', fstype='mqueue', opts='rw,relatime'),
sdiskpart(device='debugfs', mountpoint='/sys/kernel/debug', fstype='debugfs', opts='rw,relatime'),
sdiskpart(device='hugetlbfs', mountpoint='/dev/hugepages', fstype='hugetlbfs', opts='rw,relatime'),
sdiskpart(device='sunrpc', mountpoint='/run/rpc_pipefs', fstype='rpc_pipefs', opts='rw,relatime'),
sdiskpart(device='/dev/md0', mountpoint='/mnt/dfs', fstype='xfs', opts='rw,noatime,attr2,inode64,noquota'),
sdiskpart(device='binfmt_misc', mountpoint='/proc/sys/fs/binfmt_misc', fstype='binfmt_misc', opts='rw,relatime'),
sdiskpart(device='tracefs', mountpoint='/sys/kernel/debug/tracing', fstype='tracefs', opts='rw,relatime')
]

# uname -a
Linux node 4.9.0-11-amd64 #1 SMP Debian 4.9.189-3+deb9u2 (2019-11-11) x86_64 GNU/Linux

# pip3 show psutil
Name: psutil
Version: 5.6.7
Summary: Cross-platform lib for process and system monitoring in Python.
Home-page: https://github.com/giampaolo/psutil
Author: Giampaolo Rodola
Author-email: g.rodola@gmail.com
License: BSD
Location: /usr/local/lib/python3.5/dist-packages
Requires: 

[SaloSentinelOne]

I suggest filtering some of the results psutil returns.
This bug affects our production and we can't have disk alerts or metrics because of it.

[therve]

Can you add tracefs to the file_system_blacklist configuration to see if that unblocks you? We can add it by default if it does.

[SaloSentinelOne]

@therve
It worked, thank you, +1 on the changing defaults suggestion.