choosing desired os to boot over ssh

[Tapas Mishra]

What I am looking for is some thing like a service console similar to IDRAC
of Dell Power edge (if available for Ubuntu)
or any software where in Wake On Lan with a special key combination can
boot my desired OS.

On Sat, Feb 11, 2012 at 9:00 PM, Pandu Poluan <pandu at poluan.info> wrote:

> Similar to Neal, I'm scratching my head as to exactly what @Tapas wanted...
>
> The only other possibility would be to install a hypervisor (XenServer
> comes to mind) and access the VM's virtual console output using VNC or
> whatever the management app the hypervisor uses (XenCenter in case of
> XenServer). This will enable you to actually choose which OS to boot in the
> grub menu.
>
> If that still doesn't answer your needs, then I give up :-P
>
> PS: grub is actually capable of booting non-grub-using OS like Windows;
> you'll have to decipher the proper incantations for "chainloading" (plus
> all the complexities of juggling partitions - Windows its wickedly invasive
> and greedy in that regard), but it's doable.
>
> Rgds,
> On Feb 11, 2012 9:21 PM, "Neal McBurnett" <neal at bcn.boulder.co.us> wrote:
>
>> It seems to me that grub-reboot does what you asked for.  You do have to
>> modify /etc/default/grub *one time* to set the "saved" option, but after
>> that you just quickly run grub-reboot before a reboot and it boots the one
>> you picked, on just the next reboot.  If on that boot, you DON'T run
>> grub-reboot, it will reboot the time after that with your default, safe
>> boot option.  If you're worried about testing odd kernels and panics, you
>> can also set a boot option like "panic=30" so it reboots into a safe kernel
>> after a panic.
>>
>> If that isn't what you wanted, can you clarify in more detail what you're
>> looking for?
>>
>> You could set up a serial console connected to a separate computer let
>> you connect to it at boot time, but it is much more complicated and
>> expensive.
>> I guess if you need to boot into OS's that don't use grub, a serial
>> console boot would be more convenient than rebooting to the default one
>> that does do grub, and then choosing the one you really want next via
>> grub-reboot from there.
>>
>> Neal McBurnett                 http://neal.mcburnett.org/
>>
>> On Sat, Feb 11, 2012 at 05:54:30PM +0530, Tapas Mishra wrote:
>> > No this is not what I want.I am aware of these options.
>> >
>> >
>> > On Sat, Feb 11, 2012 at 3:39 PM, Pandu Poluan <pandu at poluan.info>
>> wrote:
>> >
>> >
>> >     Go here:
>> >
>> >     https://help.ubuntu.com/community/Grub2
>> >
>> >     find grub-set-default and grub-reboot. These commands will be
>> available if
>> >     you set grub.cfg according to the procedure in the section.
>> >
>> >     Rgds,
>> >
>> >     On Feb 11, 2012 3:39 PM, "Tapas Mishra" <mightydreams at gmail.com>
>> wrote:
>> >
>> >         I forgot to mention in previous message I do not want to be
>> manually
>> >         editing the grub.cfg file each time if I have to frequently
>> switch
>> >         between different OS.
>> >
>> >         On Sat, Feb 11, 2012 at 2:04 PM, Tapas Mishra <
>> mightydreams at gmail.com>
>> >         wrote:
>> >
>> >             I have a machine which is multiple boot.For sysadmin kind
>> of work I
>> >             have to boot into different different Operating System's.
>> Main Os
>> >             is Ubuntu 11.10 with grub2.
>> >
>> >             Each time if I reboot then I want to be able to select
>> desired
>> >             operating system to boot while remotely logged in via ssh
>> as we do
>> >             when we are physically present on that machine by moving
>> the up
>> >             down arrow keys.I want to do some thing similar via ssh or
>> if
>> >             possible by some other protocol.
>> >             Is it possible some how.Is there any package available for
>> the
>> >             same?
>> >
>> >             --
>> >
>> >
>> >
>> >
>>
>> > --
>> > ubuntu-server mailing list
>> > ubuntu-server at lists.ubuntu.com
>> > https://lists.ubuntu.com/mailman/listinfo/ubuntu-server
>> > More info: https://wiki.ubuntu.com/ServerTeam
>>
>


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