Comments on: Stuff that happens to cluster sysadmins http://www.colino.net/wordpress/archives/2007/02/09/stuff-that-happens-to-cluster-sysadmins/ news for few, stuff no-one cares about Mon, 23 Jan 2012 19:44:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Calim (Martin H.) http://www.colino.net/wordpress/archives/2007/02/09/stuff-that-happens-to-cluster-sysadmins/comment-page-1/#comment-35320 Calim (Martin H.) Tue, 13 Feb 2007 11:44:25 +0000 http://www.colino.net/wordpress-1.5/archives/2007/02/09/stuff-that-happens-to-cluster-sysadmins/#comment-35320 Hi Colin, It happened to me too :) Remember that /proc/sys/net/ipv4/netfilter/ip_conntrack_max is reseted do it's default value each time ip_conntrack kernel modules in reloaded. It happens on RedHat when issuing a "service iptables restart" for examples. Solution: adding args to the module loading statement in modprobe.conf (redhat) , like this: options ip_conntrack hashsize=32768 With ip_conntrack_max = hashsize * 8 Greets !!! Hi Colin,

It happened to me too :) Remember that /proc/sys/net/ipv4/netfilter/ip_conntrack_max is reseted do it’s default value each time ip_conntrack kernel modules in reloaded. It happens on RedHat when issuing a “service iptables restart” for examples.

Solution:
adding args to the module loading statement in modprobe.conf (redhat) , like this:
options ip_conntrack hashsize=32768

With ip_conntrack_max = hashsize * 8

Greets !!!

]]> By: Hastur http://www.colino.net/wordpress/archives/2007/02/09/stuff-that-happens-to-cluster-sysadmins/comment-page-1/#comment-35171 Hastur Mon, 12 Feb 2007 07:25:08 +0000 http://www.colino.net/wordpress-1.5/archives/2007/02/09/stuff-that-happens-to-cluster-sysadmins/#comment-35171 You might want to consider setting ip_conntrack_tcp_timeouts to more reasonable values than the defaults You might want to consider setting ip_conntrack_tcp_timeouts to more reasonable values than the defaults

]]> By: Pierre Phaneuf http://www.colino.net/wordpress/archives/2007/02/09/stuff-that-happens-to-cluster-sysadmins/comment-page-1/#comment-34792 Pierre Phaneuf Fri, 09 Feb 2007 18:03:43 +0000 http://www.colino.net/wordpress-1.5/archives/2007/02/09/stuff-that-happens-to-cluster-sysadmins/#comment-34792 Hey! That's work stuff! Hey! That’s work stuff!

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