with this mail I want to make you heroes aware of
"slimhat.opensuse.org". This machine is installed in the same data
center as "widehat.opensuse.org".
Both those machines are cross-connected and can be used as "backdoor" to
the IPMI interface of the other machine.
In this way we can access the IPMI interfaces (console, etc.) remotely
in a secure way (and will hopefully not need to drive to this datacenter
for simple reboots ;-)).
Here is some more documentation:
Both machines have 4 NICs and one additional IPMI
interface. They are
cross-connected to each other via point-to-point IP connections in the
widehat/IPMI [172.16.0.5] <-> slimhat/pciright [172.16.0.6]
slimhat/IPMI [172.16.0.9] <-> widehat/pcieup [172.16.0.10]
So, in order to access widehat's IPMI interface connect to slimhat and use
port-forwarding to forward HTTP(S):
$ ssh root(a)slimhat.opensuse.org -L8443:172.16.0.5:443
You can then access localhost:8443 locally.
Alternatively you can also you ipmitool(1) to control the server remotely.
We were able to use this mechanism to reboot the machine already once
remotely, as it was somehow "stuck" (no logs available :-/), so this
does indeed safe some work / travel / effort.
SSH access to slimhat.opensuse.org
is restricted to the IP range(s) of
SUSE plus some documented exceptions . Feel free to open a merge
request in case you want to be able to access this machine via SSH also.
Martin Caj & Ricardo Klein have been super helpful in setting up this
machine, so please consider to buy them a beer the next time you meet
them (e.g. this weekend ;-)).
P.S.: Yes, I'm aware of current disk / capacity issues with