Serial over Lan

diosim · 07-17-2017, 09:59 AM

Hi guys,

I'm having some issue to login via serial over lan ttyS1.
I can the output during the reboot via the serial console, but can't login, no getting any login prompt.
Can someone please help?
Thanks
Here my /etc/inittab

Code:

S1:23:respawn:/sbin/agetty -L 115200 ttyS1 xterm

my grub: /etc/grub.conf

Code:

default=0
default ttyS1
serial 0x30e0 115200
label ttyS1
timeout=5
#splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
serial --port=0x30e0 --unit=1 --speed=115200 --word=8 --parity=no --stop=1
terminal --timeout=5 serial console
timeout=10
kernel /boot/vmlinuz-2.6.32-696.3.2.el6.x86_64 ro root=UUID=2e5016ed-970a-4089-9c81-d47979c4b47c nomodeset rghb guiet rdblacklist=snd_hda_intel console=ttyS1,115200n8 noirqdebug selinux=0 nodmraid nompth nolvm raid=noautodetect rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us LANG=en_US.UTF-8 rd_NO_MD pci=nommconf SYSFONT=latarcyrheb-sun16 rd_NO_LVM rd_NO_DM crashkernel=auto
initrd /boot/initramfs-2.6.32-696.3.2.el6.x86_64.img

michaelk · 07-17-2017, 11:22 AM

Looks like you are running Redhat/CentOS 6. Version 6.x uses Upstart and not SysV so adding the agetty line to inittab has no effect.

From everything I have found on the internet all you need to do is add the console=ttyS1,115200n8 as a kernel parameter. Although one thread seemed to indicate that version 6.4 required a /etc/init/ttyS1.conf and 6.5 did not.

This thread contains both methods so try it and see what works.
https://www.cyberciti.biz/faq/centos...erial-console/

diosim · 07-18-2017, 04:23 AM

Thanks, I've done some test with both, but still hanging at

Code:

FS-Cache: Netfs ‘nfs’ registered for caching

Even if the machine is up and running on the main screen, so I don't understand what is wrong.
Latest logs

Code:

FS-Cache: Netfs 'nfs' registered for caching
polkitd[3244]: started daemon version 0.96 using authority implementation `local' version `0.96'
rtkit-daemon[3250]: Sucessfully made thread 3248 of process 3248 (/usr/bin/pulseaudio) owned by 'gdm' high priority at nice level -11.
rtkit-daemon[3250]: Sucessfully made thread 3254 of process 3248 (/usr/bin/pulseaudio) owned by 'gdm' RT at priority 5.
rtkit-daemon[3250]: Sucessfully made thread 3255 of process 3248 (/usr/bin/pulseaudio) owned by 'gdm' RT at priority 5.

michaelk · 07-18-2017, 04:57 AM

As far as I know that is a NFS issue and should be unrelated to using a serial console. Not enough information provided to know what is happening.

diosim · 07-18-2017, 05:01 AM

Which log would you need?

diosim · 07-18-2017, 07:06 AM

I checked other machines with same messages, it's the last line in dmesg so I'm just wondering if not related to serial console login which is not working?