Regarding serial ports - if you have IPMI then of course you have a virtual serial port.
I learned something new about serial ports and IPMI Serial Over LAN recently.. First of all you have to use the kernel config option console=ttyy0 console=ttyS1,115200 This is well known. In the bad old days you had to edit the /etc/inittab and arrange a spawn of a getty process on /dev/ttyS1 One gotcha - /dev/ttyS1 usualy corresponds to serial port 0 in the BIOS. (I may have that work=g but there is a mismatch) These days there is a service which is managed under system and will automatically detect and configure the serial terminal. You still need the kernel console= option of course. system enable serial-getty The youth of today etc. Not having to solder up RS232 plugs and find the baud rate by listening to a modem... Blog here on serial consoles in system http://0pointer.de/blog/projects/serial-console.html I am genuinely impressed at how good this is - it worked first time on Debian system On Fri, 14 Jun 2019 at 02:39, Robert G. Brown <r...@phy.duke.edu> wrote: > On Thu, 13 Jun 2019, Jonathan Engwall wrote: > > > I did not see Robert Brown's reply until J?rg Sa?manshausen quote the > entire > > thing.It's all gone now. I got rid of the netgear router too. My policies > > are Drop and my rsa keys are specific. It works perfectly when nobody > slips > > in. > > "Hang a console on it" this sound fscinationg. Consoles give me trouble. > > I will read up on it. > > In the old days -- and I'm a relic of the old days;-) -- one did > EVERYTHING from a console. Even now I do most of my systems work from a > tty interface, basically an xterm. > > It's a lot harder to manage now, since serial ports are dead... if the > particular problem you're trying to debug is the network... > > rgb > > > Thank you. > > Jonathan Engwall. > > > > > > Robert G. Brown http://www.phy.duke.edu/~rgb/ > Duke University Dept. of Physics, Box 90305 > Durham, N.C. 27708-0305 > Phone: 1-919-660-2567 Fax: 919-660-2525 email:r...@phy.duke.edu > > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > https://beowulf.org/cgi-bin/mailman/listinfo/beowulf >
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