NRPE: Unable to read output

NRPE: Unable to read output

Solution:

1. Check if you have plugins for the right arch, i.e. if your client is x86_64 your plugins should be of 64 bit arch.
2. The plugin should be executable.
3. The nrpe user (nagios) should have execute permission for the plugins.




 [root@nagiosClient plugins]# ls -la check_swap
-rwxr-xr-x 1 root root 54025 Aug 30  2012 check_swap
[root@nagiosClient plugins]# file check_swap
check_swap: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, not stripped
[root@nagiosClient plugins]# uname -a
Linux nagiosClient 2.6.18-164.6.1.el5 #1 SMP Tue Oct 27 11:30:06 EDT 2009 i686 i686 i386 GNU/Linux
[root@nagiosClient plugins]#