Hi, on a server 1, the plugin works well by specifying its own address :
/usr/lib/nagios/plugins/check_ntp_time -H 192.168.50.7 -v sending request to peer 0 response from peer 0: offset -0,0005108481273 sending request to peer 0 response from peer 0: offset -6,853620289e-05 sending request to peer 0 response from peer 0: offset -2,743146615e-05 sending request to peer 0 response from peer 0: offset -2,787803533e-05 overall average offset: -0,0005108481273 NTP OK: Décalage -0,0005108481273 secs|offset=-0,000511s;60,000000;120,000000; on a second, it doesn't work : /usr/lib64/nagios/plugins/check_ntp_time -H 192.168.50.2 -v sending request to peer 0 re-sending request to peer 0 re-sending request to peer 0 re-sending request to peer 0 re-sending request to peer 0 re-sending request to peer 0 re-sending request to peer 0 NTP CRITICAL: No response from NTP server But a request on localhost seems to work : /usr/lib64/nagios/plugins/check_ntp_time -H localhost -v sending request to peer 0 response from peer 0: offset -4,291534424e-06 sending request to peer 0 response from peer 0: offset -2,002716064e-05 sending request to peer 0 response from peer 0: offset -2,062320709e-05 sending request to peer 0 response from peer 0: offset -1,752376556e-05 sending request to peer 1 re-sending request to peer 1 re-sending request to peer 1 re-sending request to peer 1 re-sending request to peer 1 re-sending request to peer 1 re-sending request to peer 1 discarding peer 1: stratum=0 overall average offset: -4,291534424e-06 NTP OK: Décalage -4,291534424e-06 secs|offset=-0,000004s;60,000000;120,000000; The configuration of ntpd daemon are strictly the same on both servers. Has anyone an idea to help me ? Best regards ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null