Nagios Support Forum

Hi,

I read several topic in this forum and search in google about my problem but no find the solution.

I need to run a command 'check_disk' in a folder (filesystem) like 'root' (command sudo) where the limit access "drwx------ postgres postgres" .

(Remote host) I edit de file sudo (visudo)
#NAGIOS
Defaults:nrpe !requiretty
nrpe ALL=(root) NOPASSWD:/usr/lib64/nagios/plugins/check_disk

(Remote Host) I run the command:
/usr/bin/sudo /usr/lib64/nagios/plugins/check_disk -w 80 -c 90 -p /var/lib/pgsql/pg_tblspc ---> It is WORK !!!


In nrpe.cfg
command[check_disk_sdb2_1]=/usr/lib64/nagios/plugins/check_disk -w 80 -c 90 -p /var/lib/pgsql/pg_tblspc
command[check_disk_sdb2_2]==/usr/bin/sudo /usr/lib64/nagios/plugins/check_disk -w 80 -c 90 -p /var/lib/pgsql/pg_tblspc

command[check_disk_sdb1_1]=/usr/lib64/nagios/plugins/check_disk -w 80 -c 90 -p /
command[check_disk_sdb1_2]==/usr/bin/sudo /usr/lib64/nagios/plugins/check_disk -w 80 -c 90 -p /



I run command:
/usr/local/nagios/libexec/check_nrpe -H REMOTE_HOST check_disk_sdb2_1
DISK CRITICAL - /var/lib/pgsql/pg_tblspc is not accessible: Permission denied --> It is OK. It is running like no root

/usr/local/nagios/libexec/check_nrpe -H REMOTE_HOST check_disk_sdb2_2
NRPE: Unable to read output --> NO WORK, WHY?

/usr/local/nagios/libexec/check_nrpe -H REMOTE_HOST -c check_disk_sdb1_1
DISK OK - free space: / 195423 MB (83.60% inode=100%);| /=38333MB;233676;233666;0;233756 ---> It is OK.

/usr/local/nagios/libexec/check_nrpe -H REMOTE_HOST -c check_disk_sdb1
NRPE: Unable to read output --> NO WORK, WHY?




I try to use new my script file, but the result is the same.


I don't know what is happend ???? Why is the message "NRPE: Unable to read output " where i running some command ike sudo ?


The host is a both Centos 7 ( Kernel: Linux 3.10.0-693.17.1.el7.x86_64)
NRPE - Version: 3.2.0
Nagios Core 4.1.1

Do you really have '==' in your nrpe.cfg file or is it a typo?
If you have '==' try changing it to a single '='.

I think @danjoh may be on to something.

remember to restart nrpe after making the change

Sorry, I write '==' but in the file rnpe.cfg it is a '='

I rest the service : systemctl restart nrpe.service

But It is no work. When i run a command (Nagios Server) "/usr/local/nagios/libexec/check_nrpe -H vs-sigm-bd-pre -c check_disk_sdb1" the message is: "NRPE: Unable to read output"


I don't know it !!!??

I check that
(remote server) su nagios
(remote server) [nagios] /usr/lib64/nagios/plugins/check_disk -w 80 -c 90 -p /var/lib/pgsql/pg_tblspc --> IT IS WORK

Any idea?

Anybody?

please !!!

in visudo you need something like this (assuming NRPE daemon is running under the user "nrpe")

NOTE this is different that what you previously shared