<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Hi! Thanks for replying! Yes, i already did set up the shell environment properly (actually in /etc/profile). I just did the test you adviced : user a shell script to launch the python script. But it is exactly the same behaviour. i ask the program to display the environment variables (print os.environ) : - when lauched from the command line, the python script (and the shell script) returns me exactly the same variable than the shell. I can even set up new variables (os.environ["TESTVAR2"]="blibli") and it display fine. ---- output ---- {'LANG': 'fr_FR@euro', 'TERM': 'xterm', 'SHELL': '/bin/sh', 'ORACLE_HOME': '/opt/oracle/product/10.2.0/client_1', 'SHLVL': '2', 'ORACLE_BASE': '/opt/oracle', 'TESTVAR2': 'blibli', 'PWD': '/home/www-data', 'LOGNAME': 'www-data', 'USER': 'www-data', 'MAIL': '/var/mail/www-data', 'PATH': '/opt:/usr/local/bin:/usr/bin:/bin:/usr/games:/opt/oracle/product/10.2.0/client_1/bin', 'HOME': '/home/www-data', 'LD_LIBRARY_PATH': '/opt/oracle/product/10.2.0/client_1/lib', '_': '/usr/local/nagios/libexec/dbRequest.py'} --------------- You can even see the variable TESTVAR2 that i set in the python script..... - when lauched from Nagios, the python script (and the shell script) returns me this stuff : <span class="Apple-style-span" style="border-collapse: separate; color: rgb(82, 82, 82); font-family: Verdana; font-size: 9px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;">{'NAGIOS_SERVICEDOWNTIME': '0', 'NAGIOS_HOSTDURATIONSEC': '3956006', 'NAGIOS_SERVICEGROUPNAME': '', 'NAGIOS_SERVICEACKCOMMENT': '', 'NAGIOS_DATE': '07-12-2008', 'NAGIOS_CONTACTPAGER': '', 'NAGIOS_HOSTACKAUTHOR': '', 'NAGIOS_RESOURCEFILE': '/usr/local/nagios/etc/resource.cfg', 'NAGIOS_LASTHOSTUNREACHABLE': '0', 'SHELL': '/bin/sh' I don't know where it gets that from.... Wait!!! I just performed a test while writing. This confirm my fears... I just create a new command that just launch a shell script. The shell script just echo an environment variable. when echoing $PATH, i get this frim nagios : <span class="Apple-style-span" style="border-collapse: separate; color: rgb(82, 82, 82); font-family: Verdana; font-size: 9px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;">/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin This is different than the shell environment PATH variable set in /etc/profile : PATH=/opt:/usr/local/bin:/usr/bin:/bin:/usr/games:/opt/oracle/product/10.2.0/client_1/bin The best : if i try to echo $ORACLE_HOME, guess what?..... "no output"!!!! Those tests really show that some setting completely substitutes its own environment variables to those from the shell..... WAIT AGAIN!!!! Amazing : if i restart the /etc/init.d/nagios then things go ok! But if i reboot the machine (/etc/init.d/nagios is in the runlevel scripts) then it fails back!!!! There is really something going strange with nagios executing environment!!! <span class="Apple-style-span" style="border-collapse: separate; color: rgb(82, 82, 82); font-family: Verdana; font-size: 9px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px;"> If you have any idea about it!!! I'll look in the init script if it has something special.... <pre class="moz-signature" cols="72">Guillaume </pre> </body> </html>