On Tue, 13 Oct 2009, Adam Goodall wrote:
I'm trying to setup a RHEL5.4 server to output to a serial console with as
little setup effort as possible.
A laudable goal (-:
When i was doing the same on RHEL4, it was a two step process:
1) add console=ttyS1,19200 to the kernel boot argument at install time
2) add bootloader --location mbr --append="console=ttyS1,19200" to the
kickstart file.
Well, here's selected bits from my setup.
RHEL4:
1) label rhel4
kernel vmlinuz4
append initrd=init4.img ks=hd:sdb1:/configs/rhel4.cfg console=ttyS0,9600
2) bootloader --location=mbr --append="console=tty0 console=ttyS0,9600 rhgb quiet"
Not quite sure about the first part of the --append, but it works and has
done for years. We use ttyS0 on every Dell and Sun box I've ever
kickstarted. Perhaps RHEL5 has relabeled your serial port?
RHEL5:
1) label rhel5
kernel vmlinuz5
append initrd=init5.img ks=hd:sdb1:/configs/rhel5.cfg console=ttyS0,9600
2) bootloader --location=mbr --append="console=ttyS0,9600 rhgb quiet"
Here, the --append section is identical to yours (other than S0 over S1).
Which is surprising if your setup setup doesn't work...
This set up everything required in the following files:
/boot/grub/grub.conf
/etc/inittab
/etc/securetty
And life was easy...
I am now trying to do the same thing in RHEL5 but it is not having the
same effect. Using the setup above, It sets up the grub config but doesnt
setup the inittab or securetty entries, resulting in no output to the
serial console after the server has booted. Obviously i could handle this
in the post section and ammend the files as required, but i was wondering
if anyone had an elegant solution that makes it as easy as the way i did
it on RHEL4?
Well, the above lines have worked for me on RHEL5.x up to current for 32 and
64 bit on over 80 assorted machines (with only one serial port). Perhaps if
there's no ttyS1 on your boxes (being discovered as ttyS0) then the install
isn't adding the necessary lines.
Just a guess.
Ben
--
Unix Support, MISD, University of Cambridge, England
Plugger of wire, typer of keyboard, imparter of Clue
Life Is Short. It's All Good.
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