Re: serial console
Mike Castle wrote:
>
> Serial multiplexors used to be common in datacenters. Connect to the
> multiplexor over ssh or equivalent, and select which physical device
> on the rack to connect to. Most enterprise hardware would output the
> boot screens (including BIOS) to the serial port. These days, I think
> most of them run sshd or equivalent in the BIOS?
Serious servers implement IPMI or a close relative (iDRAC,
ILO...) to connect to a BMC, a separate tiny computer with an ethernet
port, and has some combination of features like:
- serial console to the main system (with support for the
BIOS/UEFI, grub serial, and kernel console serial)
- full KVM emulation (usually at a fairly low resolution over
VNC or a webpage embedded view)
- main power control
You can still buy terminal servers which connect one to a few
dozen serial ports over an SSH connection, and some are
integrated with some amount of remote power switching.
You can also buy remote KVM devices that connect to VGA or HDMI,
USB or PS/2, and shuffle that all into a VNC-like session.
-dsr-
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