<html> <body> Hi list, <x-tab> </x-tab>I setup a Centralized and Distributed Montoring system which currently monitoring 15 hosts and have 69 services altogether using passive check with check freshness enabled. <x-tab> </x-tab>Both Central and Distributed Servers seems fine however I have the following problems and see if anyone in here can help me: 1) In central server, sometimes when do the ps it shows that nagios has more than 70 processes. Anyone in here has idea why and how to solve it? Or I have to write a script, put it in the cron and check it (which I dont want to if possible)? 2) Central Server said does not receive any passive check from one of the distribute servers. However when I check the distribute server it does run ...../send_nsca...... . Once the distribute server marked as down (due to does not receive any passive check after "check_freshness" sec), it takes really long time (1-2 hours about) to make the host is up again (I think it can receive the passive check again). Furthermore, it seems the central server does not do any active check when the passive check data is staled and sometimes I have to restart the nagios in that distribute server then wait for awhile to make the central server receive the passive check again. It only happened in one distribute server. 3) One of the service in one of the server marked as down ("No data received from host"). I clicked that host using web interface and click "Schedule an immediate check of all services on this host" but it still remain the same after almost an hr. Moreover the central server also does not run any active check after the data become stale. <x-tab> </x-tab>If these problems is due to the mis-configuration in the configuration files where should I take a look? Currently I set the freshness is 5 mins (300 sec). <x-tab> </x-tab>Thanks a lot. <x-sigsep></x-sigsep> David Suen IMPORTANT:This email(and any attachments) is commercial-in-confidence and or may be legally privileged and must not be forwarded, copied or shared without express permission from Squiz. If you are not the intended recipient, you may not legally copy, disclose or use the contents in any way and you should contact <a href="mailto:squiz@squiz.net">squiz@squiz.net</a> immediately and destroy this message and any attachments. Thank you. </body> </html>