Seemingly incorrect disk space for check-disk inside a docke
Posted: Thu Mar 14, 2019 10:35 am
Hi, we run Icinga2 inside a docker container, which by default, pulls in some checks for things like the disk space.
This displays wildly incorrect warnings about the current state of disk usage:
df inside the container:
df on the parent host:
What should be the expectation here? This causes false alerts from our support services teams when the / disk inside the container is just fine with space.
Submitted: https://github.com/nagios-plugins/nagio ... issues/437
This displays wildly incorrect warnings about the current state of disk usage:
Code: Select all
$ '/usr/lib64/nagios/plugins/check_disk' '-c' '10%' '-w' '20%' '-X' 'none' '-X' 'tmpfs' '-X' 'sysfs' '-X' 'proc' '-X' 'configfs' '-X' 'devtmpfs' '-X' 'devfs' '-X' 'mtmfs' '-X' 'tracefs' '-X' 'cgroup' '-X' 'fuse.gvfsd-fuse' '-X' 'fuse.gvfs-fuse-daemon' '-X' 'fdescfs' '-X' 'overlay' '-X' 'nsfs' '-X' 'squashfs' '-m' -n
DISK WARNING - free space:
/ 7992 MB (78.16% inode=98%);
/icinga-backups 6275 MB (12.26% inode=99%);
/etc/icinga2 6275 MB (12.26% inode=99%);
/etc/icingaweb2 6275 MB (12.26% inode=99%);
/run/secrets 6275 MB (12.26% inode=99%);
/etc/resolv.conf 6275 MB (12.26% inode=99%);
/etc/hostname 6275 MB (12.26% inode=99%);
/etc/hosts 6275 MB (12.26% inode=99%);
/var/log/icinga2 6275 MB (12.26% inode=99%);
/var/lib/icinga2 6275 MB (12.26% inode=99%);
| /=2233MB;8180;9203;0;10226 /icinga-backups=44895MB;40936;46053;0;51171 /etc/icinga2=44895MB;40936;46053;0;51171 /etc/icingaweb2=44895MB;40936;46053;0;51171 /run/secrets=44895MB;40936;46053;0;51171 /etc/resolv.conf=44895MB;40936;46053;0;51171 /etc/hostname=44895MB;40936;46053;0;51171 /etc/hosts=44895MB;40936;46053;0;51171 /var/log/icinga2=44895MB;40936;46053;0;51171 /var/lib/icinga2=44895MB;40936;46053;0;51171Code: Select all
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/docker-253:3-126064738-5677da1e1badc5ac1a4a1258fa9acae03c5658db35c7f86abc38819b638aae14 10G 2.2G 7.9G 22% /
tmpfs 126G 0 126G 0% /dev
tmpfs 126G 0 126G 0% /sys/fs/cgroup
/dev/mapper/rhel-var 50G 44G 6.2G 88% /etc/hosts
shm 64M 0 64M 0% /dev/shm
tmpfs 126G 0 126G 0% /proc/acpi
tmpfs 126G 0 126G 0% /proc/scsi
tmpfs 126G 0 126G 0% /sys/firmwareCode: Select all
$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 4.0G 1.6G 2.5G 40% /
devtmpfs 126G 0 126G 0% /dev
tmpfs 126G 0 126G 0% /dev/shm
tmpfs 126G 4.1G 122G 4% /run
tmpfs 126G 0 126G 0% /sys/fs/cgroup
/dev/mapper/rhel-usr 20G 8.6G 12G 43% /usr
/dev/sda2 1016M 173M 844M 18% /boot
/dev/mapper/rhel-var 50G 44G 6.2G 88% /var
/dev/mapper/rhel-tmp 8.0G 546M 7.5G 7% /tmp
/dev/sda1 200M 9.8M 191M 5% /boot/efi
/dev/mapper/vg_data1-hadoop 500G 25G 476G 5% /hadoop
/dev/mapper/vg_data1-home 5.0G 4.1G 1002M 81% /home
tmpfs 26G 0 26G 0% /run/user/4906
tmpfs 26G 0 26G 0% /run/user/4434
tmpfs 26G 0 26G 0% /run/user/4955
tmpfs 26G 0 26G 0% /run/user/0
tmpfs 26G 0 26G 0% /run/user/4959
tmpfs 26G 0 26G 0% /run/user/4436
gdchdpmn04drlx.geisinger.edu:/group 219T 163T 56T 75% /hdfs/group
tmpfs 26G 0 26G 0% /run/user/4185Submitted: https://github.com/nagios-plugins/nagio ... issues/437