Bug ID 554461: Serial-based Virtual Edition (VE) consoles do not display boot messages.

Last Modified: Mar 21, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP VE(all modules)

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4

Opened: Oct 27, 2015
Severity: 3-Major

Symptoms

Messages do not display during bootup for serial-based Virtual Edition (VE) consoles.

Impact

Any bootup messages of interest cannot be seen on the serial console, which hinders debugging in the event of a boot failure or error.

Conditions

This occurs because by design VE grub and kernel configurations defaults to vga (tty0).

Workaround

To add the serial console, follow these steps: 1) Login to the VE and run the following command to edit the grub configuration: # vi $( grub_open ) 2) Add the following two lines after 'timeout=8': serial --unit=0 --speed=19200 terminal --timeout=3 serial console 3) Edit each kernel boot entry to define two consoles as follows: console=tty0 console=ttyS0 4) Write and quit the vi editor with the command :wq 5) Synchronize the grub changes to storage such that they apply on the next boot: # grub_close Note: Some Xen variants may need to specify 'hvc0' instead of 'ttyS0' for their serial console. Other Xen variants may need to specify 'ttyS1'. In all cases, leaving 'console=tty0' in place is required to keep VGA console functionality.

Fix Information

None

Behavior Change