Hi, thanks!
Don't think it is bios related, the Dell workstations go down at the same time, while the supermicro server stay up. And these machines are booted in the same way. I have also confirmed that the time is related to the lease time I give in dhcpd.conf. Haven't found anything in the logs, but now I start to suspect it has to do with how I let them boot, I use ip=dhcp would suspect it to work differently if I instead use static values here. But then again, ip=dhcp is "easier", and why should it work on some machines, and not on others? And using infinite lease time seems to solve the issue (but a bit more "ugly"). /jon On 22 October 2019 at 09:00:58 +02:00, Tony Brian Albers <t...@kb.dk> wrote: > On Tue, 2019-10-22 at 08:39 +0200, <teg...@renget.se> wrote: > > > Hi, > > > > have been using disk less machines extensively, and just recently > > experienced a problem connected to the dhcp lease time. > > > > Initial contact is over dhcp (tied to mac address), but once the > > machines boot over the nfs exported root file system static ip is > > used (with the same address as initially used by dhcp). > > > > This strategy has previously worked without any issues, but recently, > > when setting up a small experimental environment using older Dell > > desktop machines I have noted that these machines fail when the lease > > time for the dhcp server expires. > > > > This ONLY happens on the desktop machines - the server grade machines > > I have used this far are not affected. > > > > By putting infinite lease time in dhcpd.conf the problem goes away - > > but I still would like to understand why this happens on just some of > > the machines. > > > > Regards, > > /jon > > > > _______________________________________________ > > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin > > Computing > > To change your subscription (digest mode or unsubscribe) visit https: > > //beowulf.org/cgi-bin/mailman/listinfo/beowulf > > > Hejsan Tegner, > > It could be something as stupid as BIOS power management shutting down > the NIC to save electricity. > But then again, it could be a hardware profile in the OS that doesn't > let you keep using the static IP from the root FS. > > Nothing in the logs? > > /tony > > > -- > Tony Albers - Systems Architect - IT Development > Royal Danish Library, Victor Albecks Vej 1, 8000 Aarhus C, Denmark > Tel: +45 2566 2383 - CVR/SE: 2898 8842 - EAN: 5798000792142 >
_______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit https://beowulf.org/cgi-bin/mailman/listinfo/beowulf
