I have a big problem with my Raq3 w/ Raq4 OS. Sporadicly, sometimes daily, and than again after 10 days running fine, my server locks entirely. From the logs I can see it's actually still up and running, but apparently it's blocking all communication for all services. But I can't find anything else unusual in the logs. A friend of mine even wrote a little cron job, which automatically reboots the system when the server is locking again. But even that isn't helping at all, and the server still isn't able to communicate with the outside world. ONLY a hard reboot (power off/power on) by the ISP is solving the problem temporarily, and the server is running fine again.
I'm not a Linux expert, but even Linux gurus seem to be rather clueless on this one. I'm afraid it could be an hardware issue, any other ideas what could cause something like that? If it's an hardware issue, what hardware could be damaged?
When this happens see if you can gain access at all. I have seen problems with the ethernet drivers that cause a system to stop responding but the system is up. If you serial in to a console and restart the network the system comes back up. I found this to be due to a mis-negotiation of the 10/100 half/full duplex settings.
Run ifconfig on your system and see if there are collisions.
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thanks for your help.
No, I'm not able to communicate at all with the server when the problem occurs, and Ifconfig isn't showing me any collusions. However, I have changed the cron job now to restart the network when it isn't able to communicate again. But if it would the problem you are describing, wouldn't a restart have solved the problem as well?