Thank's for your quick answer! I can't use ipmi in this machine... # ipmitool sel Could not open device at /dev/ipmi0 or /dev/ipmi/0 or /dev/ipmidev/0: No such file or directory Get SEL Info command failed # modprobe ipmi_si FATAL: Error inserting ipmi_si (/lib/modules/2.6.18-194.26.1.el5xen/kernel/drivers/char/ipmi/ipmi_si.ko): No such device # lsmod |grep ipmi ipmi_watchdog 52641 0 ipmi_devintf 44753 0 ipmi_msghandler 73369 2 ipmi_watchdog,ipmi_devintf This is a Virtual Server from 1and1, I cannot access the BIOS... any other idea? 2013/4/11 <m.roth@xxxxxxxxx> > nan del bosc wrote: > > Hi to all! > > > > We're using CentOS 5.5 64bits for our Plesk 11. > > > > This week we had the following problem 3 times... > > > > Suddenly, the server stops responding in all services (SSH, Apache, > > Postfix, ...) but ping works! > > > > After wait a few minutes (or 2 hours some times) the server continues > > unresponsive until we reboot. After reboot we search on /var/log/messages > > but cannot find useful information... > <snip> > > A quick google shows me that the postfix messages are just that, and you > might want to fix it so it's not asking for it. > > HOWEVER, the important thing is that it appears to have just gone > completely unresponsive. I've seen that happen to some servers here, and > we've never found any clues.... On the other hand, IIRC, they tended to be > boxes that we've had other problems with, and have had a number rebuilt > under warranty (mostly Penguins, and the problems I've had with them, as > they're all Supermicro m/b's, told me to NEVER buy a Supermicro m/b). > > The only thing I can suggest trying might be to use ipmitool (assuming you > don't want to bring them down and look in the BIOS) to read the SEL > (system event log), to look for hardware errors. > > mark > > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos > -- --- Salut! _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos