wiki:ipmi

Version 1 (modified by Jamie McClelland, 6 months ago) (diff)

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IPMI

IPMI allows us to access a physical server removetly, as if we were in the colo with a monitor and keyboard plugged in. At least in theory. We used to use a simple serial cable to achieve this feat. However, new servers are no longer beings shipped with serial ports and motherboard/bios software no longer support them. Instead, we are expected to use IPMI.

IPMI provides a million ways to connect, but we are enabling two. Both are configured to use a local, non-routable IP address.

  • web-based access (we will setup nginx to proxy from a public address to the non-routable address)
  • serial over LAN access, using ipmiutil which will be run from a server in the cabinet

Unfortunately, IPMI is complex and varies considerably from computer to computer. Here are the steps used to connect john.

BIOS/Setup

When you first boot the computer, IPMI has to be enabled and assigned an IP address.

We use a non-routable IP address so the only way to connect to IPMI is via a machine in the colo itself.

Below are the screen shots of the bios and their settings.

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