Remote command execution failed: Permission denied,please...

[rajesh.mehra]

Please check these values also.

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[root@localhost etc]# cat nagios.cfg | grep nagios_user
nagios_user=nagios
[root@localhost etc]# cat nagios.cfg | grep nagios_group
nagios_group=nagios

[aleks1]

this is wrong see the answer below

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root@maestro:/usr/lib/nagios/plugins# cat nagios.cfg | grep nagios_user
cat: nagios.cfg: No such file or directory
root@maestro:/usr/lib/nagios/plugins# cat nagios.cfg | grep nagios_group
cat: nagios.cfg: No such file or directory
root@maestro:/usr/lib/nagios/plugins# 

i think because this nagios was implemented ( not by me ) with root user!

[aleks1]

Ops! my stupid error! i was in the wrong directory!
in the right directory:

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root@maestro:/etc/nagios3# cat nagios.cfg | grep nagios_user
nagios_user=nagios
root@maestro:/etc/nagios3# cat nagios.cfg | grep nagios_group
nagios_group=nagios

[rajesh.mehra]

check nagios user is available in your system ???

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[root@localhost ~]# id nagios
uid=494(nagios) gid=490(nagios) groups=490(nagios)

If available
then
Switch to nagios user and run command by nagios user.

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[root@localhost ~]# su - nagios
[nagios@localhost]$ /usr/lib/nagios/plugins/check_by_ssh -4 -H remote address -l root -p 2022 -C "/usr/local/nagios/libexec/check_nagios -t 20 -e 5 -F /usr/local/nagios/var/nagios.log -C /usr/local/nagios/bin/nagios" -vvvvvvvvvvvvvvvvvvvvv

else

add nagios user in system

[aleks1]

check nagios user is available in your system ???

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root@maestro:/etc/nagios3# id nagios
uid=121(nagios) gid=124(nagios) groups=124(nagios)

is available?

Switch to nagios user and run command by nagios user.

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root@maestro:/etc/nagios3# su - nagios
root@maestro:/etc/nagios3# su - nagios
root@maestro:/etc/nagios3# su - nagios

i can't switch to nagios user!

i must create a nagios user?

because this nagios (implemented not by me) have a lot of service and hosts to other remote servers.... if i create nagios user... could cause problems to other remote servers?

[rajesh.mehra]

Hi

You dont need to create nagios user It is already on your system. If you will switch to nagios user it will not effect your system.
because all commands are running by nagios in backend not by root.

Switch to nagios user then run the command I hope it will show exact problem

[Stuart Watts]

Forums ate my response...

The clue is in the error message "Port must be a positive integer"

The problem is the service definition - $ARG1$ is passing "2022" to the command, which is used as the value for the option -H, which should be the host address or name. You're passing "root" as $ARG2$ which is sent to the plugin as the value for -p, hence the error message.

Update your service definition to:

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    define service {
            use generic-service
            host_name backups
            service_description Nagios Status
            check_command check_nagios_ssh!$HOSTADDRESS$!2022!root!"/usr/local/nagios/libexec/check_nagios -t 20 -e 5 -F /usr/local/nagios/var/nagios.log -C /usr/local/nagios/bin/nagios"
    }

[rajesh.mehra]

Thanks Stuart Watts

Exactly right

Change command definition according to below

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define command{
command_name check_nagios_ssh
command_line /usr/lib/nagios/plugins/check_by_ssh -H $HOSTADDRESS$ -p $ARG1$ -l $ARG2$ -C $ARG3$
}

OR

Forums ate my response...

The clue is in the error message "Port must be a positive integer"

The problem is the service definition - $ARG1$ is passing "2022" to the command, which is used as the value for the option -H, which should be the host address or name. You're passing "root" as $ARG2$ which is sent to the plugin as the value for -p, hence the error message.

Update your service definition to:

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    define service {
            use generic-service
            host_name backups
            service_description Nagios Status
            check_command check_nagios_ssh!$HOSTADDRESS$!2022!root!"/usr/local/nagios/libexec/check_nagios -t 20 -e 5 -F /usr/local/nagios/var/nagios.log -C /usr/local/nagios/bin/nagios"
    }

both are correct

[rajesh.mehra]

Come to the previous error


Give access to nagios user so that it can login to root@remote.server without password. Still it can login by root.

Hi everybody!

I'm trying to implement a remote command from a nagios (let's call it for convenience nagios A ) to the new nagios on ubuntu server 12.04 lts (nagios B) (this nagios on ubuntu server , was done , with the precious help of this forum )
anyway i want to implement a simple command that control my nagios.log (on remote server nagios B)
i have just put the public key in authorized_keys.... and the access without password... works! the nagiosA access to the nagiosB only with a specific port:

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ssh -p 2022 root@intranet.xx.xx

then i have tried the command from the command line:

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root@maestro: root@maestro:/etc/nagios-plugins/config# /usr/lib/nagios/plugins/check_by_ssh  -H 'intranet.xx.xx' -p '2022'  -C "/usr/local/nagios/libexec/check_nagios -F '/usr/local/nagios/var/nagios.log' -e '5' -C '/usr/local/nagios/bin/nagios'"

NAGIOS OK: 40 processes, status log updated 47 seconds ago 

ok works!
but when i try to implement this command on servece definition (for control automatically the remote nagios.log)
i got this error:

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backups;Nagios Status;UNKNOWN;SOFT;2;Remote command execution failed: Permission denied, please try again.

where am i wrong?

this is my command definition:

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define command{
        command_name    check_nagios_ssh
        command_line    /usr/lib/nagios/plugins/check_by_ssh -H '$HOSTADDRESS$' -p '$ARG4$' -C "/usr/local/nagios/libexec/check_nagios -F '$ARG1$' -e '$ARG2$' -C '$ARG3$'"
        }

this is my service definition:

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define service {
        use                     generic-service
        host_name               backups
        service_description     Nagios Status
        check_command           check_nagios_ssh!/usr/local/nagios/var/nagios.log!5!/usr/local/nagios/bin/nagios!2022
}

this is my host definition:

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define host{
        use                     generic-host            ; Name of host template to use
        host_name               backups
        alias                   Server Nagios
        address                 intranet.xx.xx
        }

any help be appreciate!!!

[aleks1]

hi everybody and thanks for support! (

Forums ate my response...

why forums ate your response? hehehe )
with this service definition:

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    define service {
            use generic-service
            host_name backups
            service_description Nagios Status
            check_command check_nagios_ssh!$HOSTADDRESS$!2022!root!"/usr/local/nagios/libexec/check_nagios -t 20 -e 5 -F /usr/local/nagios/var/nagios.log -C /usr/local/nagios/bin/nagios"
    }

and this command definition:

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define command{
command_name check_nagios_ssh
command_line /usr/lib/nagios/plugins/check_by_ssh -H $ARG1$ -p $ARG2$ -l $ARG3$ -C $ARG4$
}

i got this error:

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SERVICE ALERT: backups;Nagios Status;UNKNOWN;SOFT;1;Remote command execution failed: Permission denied, please try again.

with this service definition:

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define service {
        use generic-service
        host_name backups
        service_description Nagios Status
        check_command check_nagios_ssh!2022!root!"/usr/local/nagios/libexec/check_nagios -t 20 -e 5 -F /usr/local/nagios/var/nagios.log -C /usr/local/nagios/bin/nagios"
}

and with command definition:

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define command{
command_name check_nagios_ssh
command_line /usr/lib/nagios/plugins/check_by_ssh -H $HOSTADDRESS$ -p $ARG1$ -l $ARG2$ -C $ARG3$
}

i got this errorr:

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SERVICE ALERT: backups;Nagios Status;UNKNOWN;SOFT;2;Remote command execution failed: Permission denied, please try again.

Switch to nagios user then run the command I hope it will show exact problem

but i can't switch to nagios user!!!

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root@maestro:/etc/nagios3# id nagios
uid=121(nagios) gid=124(nagios) groups=124(nagios)

but when i try...su -nagios :

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root@maestro:/etc/nagios3# su - nagios
root@maestro:/etc/nagios3# su - nagios
root@maestro:/etc/nagios3# su - nagios

i'm little bit confused! help!