<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2658.24"> <TITLE>NSCA --daemon problem: too many child process</TITLE> </HEAD> <BODY> Dear All: I have a Nagios distributed setup (Central: Solaris 9, sparc , 1 GB RAM, Nagios 2.4, nsca 2.6/Distributed: Solaris 10, sparc , 1 GB RAM, Nagios 2.4, nsca 2.6) monitoring more than 600 servers and 2000+ services. I am running nsca in daemon mode and have noticed that it spawned child processes around 2800+ and my system swap usage was full. None of the service checks was happening there on. I could see lot of WARNING messages in nagios.log like, [1154408570] Warning: The results of service 'disk_d' on host 'server001' are stale by 21 seconds (threshold=862 seconds). I'm forcing an immediate check of the service. Also I could see lot of messages in /var/adm/messages like this, Aug 2 00:28:02 nagiosserver genunix: [ID 470503 kern.warning] WARNING: Sorry, no swap space to grow stack for pid 13531 (sshd) I had to login thorugh system console and kill nsca and restart for rectifying this problem. Any idea what would have caused this problem? Thanks and Regards, Ajay --------------------------------------------------------- Legal Notice: This electronic mail and its attachments are intended solely for the person(s) to whom they are addressed and contain information which is confidential or otherwise protected from disclosure, except for the purpose for which they are intended. Dissemination, distribution, or reproduction by anyone other than the intended recipients is prohibited and may be illegal. If you are not an intended recipient, please immediately inform the sender and return the electronic mail and its attachments and destroy any copies which may be in your possession. UCB screens electronic mails for viruses but does not warrant that this electronic mail is free of any viruses. UCB accepts no liability for any damage caused by any virus transmitted by this electronic mail. --------------------------------------------------------- </BODY> </HTML>