Nagios Support Forum

Hi,
I am still a newbie when it comes to Nagios. I setup Nagios for Lab environment. My goal is to to monitor all linux volume automatically. This mean I have to setup additional command for each volume on both servicess.cfg and nrpe.cfg which it requires a lot of work and not efficient to do it manually. First, I was wondering why check_disk does not allow multiple volume in one single check_disk, EX. check_disk... -p /usr, /, /db.. Second, is there a better way to tackle the issue.

nagios services.cfg
check_command check_nrpe!check_root_disk

nrpe.cfg
command[check_root_disk]=/usr/lib/nagios/plugins/check_disk -w 20 -c 10 -p /

Thank you in advance,

JC

You can pass arguments so that you don't need to modify the '-p /' part everytime, instead it could parse as '-p $ARG1$'.

Additionally, it's just the way the plugin works. It still does allow you to check multiple paths at once. See the below examples -

It worked with check_disk -w 20 -c 10 on local server!! I put it as "Checking all drive" into my service.cfg in Nagios server. However, I receive the error on Nagios server and no other space size passed over to Nagios server. I am including the file permission below. If this file permission problem then why it did not complaint when I run check_disk locally on server? Is there a way to modify it to check file size with root permission?

Nagio Core Server Error output:

Checking all disk
CRITICAL 05-25-2016 14:28:00 0d 23h 13m 11s 4/4 DISK CRITICAL - /hana/log/LF1/mnt00001 is not accessible: Permission denied

===================================================================
I am logging on as root

hana00:/hana/log/LF1 # ll
total 4
drwxr-x--- 5 lf1adm sapsys 4096 Apr 6 19:44 mnt00001

hana00:/hana/log/LF1/mnt00001 # ll
total 12
drwxrwxr-x 2 lf1adm sapsys 4096 Apr 6 19:43 hdb00001
drwxr-xr-x 2 lf1adm sapsys 4096 Apr 6 19:44 hdb00002
drwxr-xr-x 2 lf1adm sapsys 4096 Apr 6 19:45 hdb00003

=======================================================================================================
Target server:

hana00:/etc/nagios # df -h
Filesystem Size Used Avail Use% Mounted on
rootfs 50G 6.4G 44G 13% /
udev 505G 228K 505G 1% /dev
tmpfs 505G 0 505G 0% /dev/shm
172.16.109.5:/LeapFrog_lf_87h1_HANATierHN1 50G 6.4G 44G 13% /
storage1-4-37-1.benjamin.sap.com:/hana_shared 48G 8.9G 39G 19% /hana/shared
storage1-4-37-1.benjamin.sap.com:/HANATier_SAP_HANA_DB_usr_sap_1 48G 112M 48G 1% /usr/sap
storage1-4-40-1.benjamin.sap.com:/HANATier_SAP_HANA_DB_hana_log_1 973G 2.2G 971G 1% /hana/log/LF1/mnt00001
storage1-4-39-1.benjamin.sap.com:/HANATier_SAP_HANA_DB_hana_data_1 2.9T 4.1G 2.9T 1% /hana/data/LF1/mnt00001
172.16.120.4:/mnt1/mnt1 243G 221G 9.4G 96% /mnt1


hana00:/etc/nagios # /usr/lib/nagios/plugins/check_disk -w 20% -c 10%
DISK CRITICAL - free space: / 44729 MB (87% inode=88%); /dev 516845 MB (99% inode=-); /dev/shm 516845 MB (100% inode=99%); /hana/shared 39576 MB (81% inode=97%); /usr/sap 48528 MB (99% inode=99%); /hana/log/LF1/mnt00001 993917 MB (99% inode=99%); /hana/data/LF1/mnt00001 2984322 MB (99% inode=99%); /mnt1 9622 MB (4% inode=99%);| /=6470MB;40960;46080;0;51200 /dev=0MB;413476;465160;0;516845 /dev/shm=0MB;413476;465160;0;516845 /hana/shared=9063MB;38912;43776;0;48640 /usr/sap=111MB;38912;43776;0;48640 /hana/log/LF1/mnt00001=2230MB;796917;896532;0;996147 /hana/data/LF1/mnt00001=4118MB;2390752;2689596;0;2988441 /mnt1=226102MB;198668;223502;0;248336


Thank you in advance,

JC

Are you running it on the local server as the 'nagios' user? If not, try that.

Did you su to nagios first on the remote machine?

Hi All,
I did the following and the problem was resolved afterward. It was permission and sudo issue.

command[xxx]=/usr/bin/sudo /usr/lib/nagios/plugins/check_disk -w 20 -c 10


Thanks,

Johnny Chow

Glad to hear you were able to resolve this! Is it ok if we lock this thread and mark the issue as resolved?

Please lock the thread. Thx.

JC