cdukes
September 23, 2013, 6:38pm
1
I tried searching to see if this was posted before, but oddly, there doesn’t seem to be a way to search these forums?
I am trying to collect disk stats on my server and, according to this:http://www.percona.com/doc/percona-monitoring-plugins/cacti/linux-templates.html[/URL]
I’ve actually tried just about every permutation of this that I can think of, none of which return values.
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 9.1T 0 disk
├─sda1 8:1 0 1M 0 part
├─sda2 8:2 0 244M 0 part /boot
└─sda3 8:3 0 9.1T 0 part
├─lzbfs-root (dm-0) 252:0 0 9T 0 lvm /
└─lzbfs-swap_1 (dm-1) 252:1 0 96G 0 lvm
sr0 11:0 1 1024M 0 rom
And
# pvdisplay
--- Physical volume ---
PV Name /dev/sda3
VG Name lzbfs
PV Size 9.09 TiB / not usable 1.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 2383298
Free PE 0
Allocated PE 2383298
PV UUID SuoiPA-4Dgl-K6zd-Qqdx-KYdT-2U2D-GsxdjK
I need to get stats for lzbfs-root. I have tried the following, but all return -1:
/usr/bin/php -q /usr/share/cacti/site/scripts/ss_get_by_ssh.php --host 192.168.28.29 --type df --items jw,jx --volume lzbfs-root
jw:-1 jx:-1
/usr/bin/php -q /usr/share/cacti/site/scripts/ss_get_by_ssh.php --host 192.168.28.29 --type df --items jw,jx --volume sda3
jw:-1 jx:-1
/usr/bin/php -q /usr/share/cacti/site/scripts/ss_get_by_ssh.php --host 192.168.28.29 --type df --items jw,jx --volume /dev/sda3
jw:-1 jx:-1
/usr/bin/php -q /usr/share/cacti/site/scripts/ss_get_by_ssh.php --host 192.168.28.29 --type df --items jw,jx --volume dm-0
jw:-1 jx:-1
/usr/bin/php -q /usr/share/cacti/site/scripts/ss_get_by_ssh.php --host 192.168.28.29 --type df --items jw,jx --volume /
jw:-1 jx:-1
/usr/bin/php -q /usr/share/cacti/site/scripts/ss_get_by_ssh.php --host 192.168.28.29 --type df --items jw,jx --volume lzbfs
jw:-1 jx:-1
As I understand the docs, it is supposed to work using the volume name from lsblk…in my case “lzbfs-root”, but it doesn’t seem to work.
NB:
weber
September 24, 2013, 9:35am
2
Please show me your “df” output. The volume should be the way it is listed in the first column of “df” output.
cdukes
September 24, 2013, 5:26pm
3
~# df
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/lzbfs-root 9.0T 174G 8.9T 2% /
udev 48G 12K 48G 1% /dev
tmpfs 19G 628K 19G 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 48G 92K 48G 1% /run/shm
/dev/sda2 229M 29M 188M 14% /boot
weber
September 25, 2013, 4:39am
4
You have to use “/dev/mapper/lzbfs-root”, i.e.
cdukes
September 25, 2013, 6:21am
5
I actually tried that before (just forgot to list it) and it doesn’t work:
/usr/bin/php -q /usr/share/cacti/site/scripts/ss_get_by_ssh.php --host 192.168.28.29 --type df --items jw,jx --volume /dev/mapper/lzbfs-root
jw:-1 jx:-1
weber
September 26, 2013, 3:45am
6
‘DISKFREE_used’ => ‘nj’,
It should be --items nj,nk. Also please check that the script from PMP 1.0.4 tarball or package.
robvas
December 4, 2018, 1:50pm
7
I had a similar issue. Out of all of my servers, a couple of them would not report disk space. However, the other disk graphs worked fine such as Disk IOPS and Disk Read/Write/Time.
I saw the following error in my log file:
When I ran the script manually, I got the correct results:
nj:62762065920 nk:98220564480
However, that was as the root user. When I ran the script as the Cacti user, it failed.
bash-4.2$ /bin/php -q /usr/share/cacti/scripts/ss_get_by_ssh.php --host ‘192.168.14.2’ --type df --items nj,nk --volume ‘/dev/mapper/centos-root’
Sure enough, there was a file in /tmp that was owned by root
I deleted all the files like this in file as root.
CMD: /bin/php -q /usr/share/cacti/scripts/ss_get_by_ssh.php --host ‘192.168.14.2’ --type df --items nj,nk --volume ‘/dev/mapper/centos-root’, output: nj:62763327488 nk:98219302912
–volume '/dev/mapper/centos-root ’
Thank you for updating this post with your solution, it could save someone a lot of time in the future. Appreciated!