I have 4 RHEL 5.3 servers (running on HP blades) on my server farm that seem to hang every 2 weeks and needs rebooting to resolve the problem When this happens the server goes unresponsive to ssh attempted connections and cannot be reached.It can only be reached via the ILO. before the server goes unresponsive ..sometimes the ssh session hangs for a long long time before the server goes into unresponsive mode.
After cold rebooting via ILO it comes back to normal operation mode .I have looked through the log files thoroughly and found nothing .The other RHEL 5.3 server on this farm dont seem to have that problem and dont have IP tables enabled on them
The only hting i found is that these affected servers have IPtables enabled on them and seem to have high packet rejections..thats all i seem to see in their logs ie system logs /var/log/messages.High volumes of packet rejections in log files because IP tables is turned on
Could it be the IPtables causing this ?.the logs show no indication of any disk ,hardware problem or any other problem. Patching is not an option at the moment.If it IP tables causing this can anyone explain please Help Please anyone any help would be greatly appreciated