Re: How to enter DDB through a terminal server / remote console ... ?

On Wed, 28 Jun 2006, Robert Watson wrote:


On Wed, 28 Jun 2006, User Freebsd wrote:

'k, now that I'm up to 3 6-STABLE servers that are deadlocking, I'm spending time with the remote tech today to get a serial console put online ... how do I drop into DDB remotely, where the serial console is going through a Portmaster Terminal server? issuing CTL-ALT-ESC, I doubt, will work, will it?

If configured to use a serial console (console="comconsole" in loader.conf), you can enter the debugger with BREAK_TO_DEBUGGER in the kernel config by sending a serial break. With my portmasters, I telnet to a TCP port to connect to the serial console, so I send a telnet break, using ^]send break.

Have you ever had a problem with this warning: "(useful for remote diagnostics, but also dangerous if you generate a spurious BREAK on the serial port!)" in the handbook?

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Relevant Pages

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  • Re: How to enter DDB through a terminal server / remote console ... ?
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