I started to compose this message, then got busy with other work... Hopefully I'll have better details by the end of today.
Thanks Lamar!
On Thu, Oct 15, 2015 at 3:54 PM, Lamar Owen lowen@pari.edu wrote:
On 10/15/2015 03:05 PM, Mike - st257 wrote:
Would anyone be so kind as to share their experience? What has worked for your BMC/SoL configurations?
I have a C7 server with a physical RS-232 console, but the config should be similar. I did not have to generate a systemd service for this; systemd saw the console line and automatically started the getty without me having to generate a .service file (as far as I recall all I had to do was generate the proper /etc/default/grub, and then run 'grub2-mkconfig -o /boot/grub2/grub.cfg' and it Just Worked).
Now, I have the system set for console on both the VGA and on ttyS0, and I am not using flow-control. Here's what I have that works (again with a physical ttyS0):
[root@backup670 ~]# cat /etc/default/grub GRUB_TIMEOUT=5 GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_SERIAL_COMMAND="serial --unit=0 --speed=9600 --word=8 --parity=no --stop=1" GRUB_TERMINAL_OUTPUT="console serial"
I didn't have Term Output specified as you do. Probably the biggest problem right there, g'ah! ( will know when I have a moment to test )
GRUB_CMDLINE_LINUX="rd.md.uuid=long-uuid-string crashkernel=auto rd.lvm.lv=vg/swap rd.lvm.lv=vg/root rd.md.uuid=another-long-uuid console=tty0 console=ttyS0,9600 rd_NO_PLYMOUTH"
I didn't have the option to disable Plymouth.
I see you don't have flow control enabled, otherwise you'd have 9600n8r I'll try it without n8r.
GRUB_DISABLE_RECOVERY="true"
Also see: http://0pointer.de/blog/projects/serial-console.html
There should be no need to modify any .service files; simply editing /etc/default/grub and regenerating grub2's
The baud rate I used is not specified in any of the service files systemd generates. But as you've said I should _not need_ a service file (which is much like CentOS6 behaved with serial kernel params).
config should be enough; it was in my case (I verified by looking through root's .bash_history and finding the lines around editing /etc/default/grub and not finding any edits of any .service files....)
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