[Beowulf] Intel motherboard BMC

[Jörg Saßmannshausen]

Hi Tony,

nope. The GUI gives me a hostname, something like BMC23453234 and it is 
greyed-out so I cannot change it. The string after BMC is basically the MAC 
address without any hyphens or so. 

However, given I can go to the login page and given I then get rejected by the 
webserver and redirected to another page, I am not quite sure how that could 
affect my ability to log in. Something I am missing here?

All the best

Jörg

Am Donnerstag, 21. Juni 2018, 09:20:51 BST schrieb Tony Brian Albers:
> Does the BMC itself know its own hostname?
> 
> /tony
> 
> On 21/06/18 11:13, Jörg Saßmannshausen wrote:
> > Dear all,
> > 
> > I got a bit of a confusing situation with the BMC of some Intel
> > motherboards which we recently purchased and I am not quite sure what to
> > make out of it.
> > 
> > We have install a generic user via the IPMI commands on the compute nodes
> > and I can access the BMC remotely, again via the IPMI command like this:
> > 
> > $ ipmitool -H node105-bmc -U username -P xxx power status
> > 
> > This is working, Also, this works:
> > 
> > $ ipmitool -H 10.0.1.105 -U username -P xxx power status
> > 
> > A nslookup of node105-bmc gives the right IP address as well.
> > 
> > However, if I want to use the GUI for the BMC, i.e. opening my browser and
> > put:
> > 
> > https://node105-bmc
> > 
> > in the URL, I get the loging page When I enter my login credentials then,
> > which are the same as above, I have a problem to log in *IF* I am using
> > the
> > hostname as address but not *IF* I am using the IP address. Just to add to
> > the confusion more, on one node the hostname was working.
> > With problems I mean the browser tells me my login credentials are wrong
> > which does not happen when I am using the IP address.
> > Also, I can only use https and not http and for now I got the generic self
> > signed certificates. I want to change them at one point but right now that
> > is more on the bottom of my to-do list.
> > 
> > I find that really odd and I am not quite sure what is going on here. With
> > all the Supermicro kit I once had I never had these issues before. I was
> > able to log in regardless of using the hostname or IP address.
> > So clearly Intel does something here Supermicro did not (at the time).
> > 
> > The boards in question are Intel S2600BPB ones.
> > 
> > Has anybody seen this before?
> > 
> > I got a second issue with these boards. I usually do the normal PXE/NFS
> > boot and the setup is working well for the other, older Supermicro
> > machines. However, with the new Intel ones, this is crashing.
> > The procedure is you are selecting in the boot-menu you want to do a PXE
> > boot and not boot from the local hard drive.
> > It then boots the initramfs which seems to be fine. From what I can see,
> > both during the boot process and from the log files of the DHCP-server,
> > it is getting the right IP address.
> > However, when the initramfs hands over to the kernel, it crashes with:
> > kernel panic! attempt to kill init
> > and you literally have to pull the plug on the machine, i.e. a hard reset.
> > 
> > The only time I have seen that was when I did not specify the NIC and when
> > I had two NICs, it somehow decided to use the other one. I fixed that
> > problem by defining the interface in the boot-arguments and also the
> > second NIC is not connected anyway. It also has a InfiniBand card which
> > does allow booting from it. Again, it is not connected so in theory it
> > should not matter.
> > 
> > I am stuck here. I am using a 4.x kernel for the PXE boot, so a fairly
> > recent one. As I said, it works for the older machines but not for the
> > newer ones.> 
> >   I upgraded the whole PXE/NFS boot and that is not working too.
> > 
> > Does anybody have any ideas here?
> > 
> > Sorry for asking 2 questions in one email but as they are related I hope
> > that is ok.
> > 
> > All the best from a sunny London
> > 
> > Jörg
> > 
> > _______________________________________________
> > Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
> > To change your subscription (digest mode or unsubscribe) visit
> > http://www.beowulf.org/mailman/listinfo/beowulf