<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Exchange Server">  <style></style> </head> <body> <font face="Calibri, sans-serif" size="2"> <div>Nagios 3.3.1. Two identical RHEL6.1 systems, and all I’m trying to do is get a total disk space reading. So nrpe is running on both, with the identical command in nrpe.cfg:</div> <div> </div> <div>command[check_all_disk]=/usr/lib/nagios/plugins/check_disk -w $ARG1$ -c $ARG2$</div> <div>command[check_all_disk]=/usr/lib/nagios/plugins/check_disk -w $ARG1$ -c $ARG2$</div> <div> </div> <div>Running as user nagios from the central server.</div> <div> </div> <div>One works fine:</div> <div> </div> <div>-sh-4.1$ /usr/lib/nagios/plugins/check_nrpe -H server1 -c check_all_disk -a 20% 10%</div> <div>DISK OK - free space: / 24673 MB (98% inode=99%); /dev/shm 12007 MB (100% inode=99%); /boot 154 MB (65% inode=99%); /home 7507 MB (98% inode=99%); </div> <div> </div> <div>the other gives me this:</div> <div> </div> <div>-sh-4.1$ /usr/lib/nagios/plugins/check_nrpe -H server2 -c check_all_disk -a 20% 10%</div> <div>DISK CRITICAL - /sys is not accessible: Permission denied</div> <div> </div> <div>Identical versions of nrpe (2.12); a diff on check_disk shows they’re both identical; both commands work correctly locally run as user Nagios:</div> <div> </div> <div>[nagios@server1 ~)$ /usr/lib/nagios/plugins/check_disk -w20% -c10%</div> <div>DISK OK - free space: / 24673 MB (98% inode=99%); /dev/shm 12007 MB (100% inode=99%); /boot 154 MB (65% inode=99%); /home 7507 MB (98% inode=99%); </div> <div> </div> <div>[nagios@server2 /]$ /usr/lib/nagios/plugins/check_disk -w20% -c10%</div> <div>DISK OK - free space: / 22004 MB (77% inode=96%); /dev/shm 498 MB (100% inode=99%); /boot 387 MB (84% inode=99%);</div> <div> </div> <div> Multiple other nrpe commands running on both; this is the only thing they’re having problems with.</div> <div> </div> <div>/sys is user-readable in both. Logs show nothing.</div> <div> </div> <div>I’ve run out of ideas. Pointers in the right direction appreciated…</div> <div> </div> <div> </div> <div>Tim</div> <div> </div> <div> </div> </font> </body> </html>