Private addresses
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Here is how the private addresses work.
- Teague: please correct, I left my notebook in SF.
Form:
10.XXX.YYY.ZZZ
XXX
- First digit: future use
- Second digit: cluster # ; 0=UCSF legacy, 1=UofT, 2=UCSF new
- Third digit: future use
YYY
- First digit: 0=private network ; 1 = IPMI
- Second digit: rack number (0-7)
- Third digit: 0 = physical, 1,2,3,4... = is a VM
ZZZ
- If physical, then second and third digits = physical location in rack.
- If virtual, then serial number, starting from 1.
- Use first digit if there are 4 machines in 2U, as in SiM 4-in-1 2U machines.
Examples
- 10.0.20.12 - UCSF legacy cluster 0 (0), physical computer located in slot 12 (and possibly above) of rack 2
- 10.20.26.11 - UCSF new cluster 2 (20), VM hosted in rack 2, this is the 11th VM hosted on the the sixth VM host in that rack
- 10.10.110.9 - Toronto cluster 1 (10), this is the IPMI address for a physical machine in rack 1, in slot 9 (and possibly above)
Clear as mud?