[STDERR][EC 126]/bin/sh: Cannot execute binary file

[mrochelle]

nagiosdeva 2.6.32-279.5.1.el6.x86_64 x86_64
CentOS release 6.3 (Final)

I believe this must be something obvious that I have missed. I have refreshed my dev. environment and the default local host checks indicate the following:
[STDERR][EC 126]/bin/sh: /usr/local/nagios/libexec/check_ping: cannot execute binary file

However, I can execute the check without a problem manually from the command line?
Thanks in advance,

[mguthrie]

Can you try running it as the Nagios user?

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su nagios -c '/usr/local/nagios/libexec/check_ping'

[mrochelle]

Command line as nagios user works fine. I only have the problem from the check in the web interface.

[scottwilkerson]

Can you send the output of the following command

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ls -l /usr/local/nagios/libexec/check_ping

thanks

[mrochelle]

[root@nagiosdeva ~]# ls -l /usr/local/nagios/libexec/check_ping
-rwxr-xr-x. 1 root root 99658 Jun 6 16:15 /usr/local/nagios/libexec/check_ping

[scottwilkerson]

Can you send the command from your /usr/local/nagios/etc/commands.cfg that you are trying to run from nagios that is producing this error

[mrochelle]

check_xi_host_ping
$USER1$/check_icmp -H $HOSTADDRESS$ -w $ARG1$,$ARG2$ -c $ARG3$,$ARG4$ -p 5

check_xi_host_http
$USER1$/check_http -H $HOSTADDRESS$ $ARG1$

check_icmp
$USER1$/check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$

[mguthrie]

Just to rule out any permissions issues, lets try adding the following permissions to the file and see the issue resolves itself:

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chmod +x /usr/local/nagios/libexec/check_ping

[mrochelle]

No change...For the record, I believe I mentioned previously, that all commands work from the command line. The problem seems to be from the web interface?

[mguthrie]

Agreed, but the Nagios Core daemon is what executes the check from the command-line as the nagios user, and the output is simply displayed in the browser.

What do you get from running:

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whereis ping