Power Management on a linux server

Power Management on a linux server

[Miguel González Castaños]

dear all,

 I have a home linux server where I would like to do some kind of power
saving.

 I have been looking around to see if I find any howto, but all are
related with laptops.

 What I would like to do is to power up and shutdown the PCs either
remotely or
automatically (with cron) or whatever.

  I have different kinds of computers: Pentium Celeron, Pentium II for
software routers (xDSL) and
Pentium III and AMD K-7 for two servers.

 If it is not easy to do some kind of software suspend/shutdowns or
resumes/powerups, It could be
cheap to do some kind of hardware tweak?

 BTW, I have a small UPS, I have tested that sends the shutdown to the
linux server, but what I would like
to achieve is to for instance to powerup the server at 9 AM and shut it
down at for instance 9 PM.

 Also I would like to know if there is any software to control the
temperature of the CPU or the fans of the box
in the command prompt.

 Many thanks in advance

 Miguel

Re: Power Management on a linux server

[Scott Taylor]

At 09:00 AM 4/11/03, Miguel González Castaños wrote:
>dear all,
>
>
>  BTW, I have a small UPS, I have tested that sends the shutdown to the
>linux server, but what I would like
>to achieve is to for instance to powerup the server at 9 AM and shut it
>down at for instance 9 PM.

Easy enough with UPS control: put a timer on your AC power (you can get 
cheep ones at most hardware stores).  Make sure you set the BIOS to start 
the PC when power resumes.

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Re: Power Management on a linux server

[Miguel González Castaños]

And for the PCs where I dont have an UPS? Is there any other choice?

Many thanks for your answer

Miguel

Scott Taylor ha escrito:

> At 09:00 AM 4/11/03, Miguel González Castaños wrote:
> >dear all,
> >
> >
> >  BTW, I have a small UPS, I have tested that sends the shutdown to the
> >linux server, but what I would like
> >to achieve is to for instance to powerup the server at 9 AM and shut it
> >down at for instance 9 PM.
>
> Easy enough with UPS control: put a timer on your AC power (you can get
> cheep ones at most hardware stores).  Make sure you set the BIOS to start
> the PC when power resumes.
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
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Re: Power Management on a linux server

[Mikel Bauer]

Well,
That could get interesting.
A hardware solution could be cobbled together by a power timer set to 
turn on at the specified time (with the bios set to turn on on power), 
and set to turn off some period of time after a cron shutdown.  Kinda 
cheezy though...

Obviously, turning the machine off is not a big deal, it's turning it 
back on...

You could always explore the wonderful (dripping sarcasm) world of Wake 
On Lan, assuming your hardware supports it.  But WOL is voodoo magic 
(literally...anything that requires you to send out a "magic" packet is 
a little shaddy)

-- 
Mikel Bauer

Miguel González Castaños wrote:
> And for the PCs where I dont have an UPS? Is there any other choice?
> 
> Many thanks for your answer
> 
> Miguel
> 
> Scott Taylor ha escrito:
> 
> 
>>At 09:00 AM 4/11/03, Miguel González Castaños wrote:
>>
>>>dear all,
>>>
>>>
>>> BTW, I have a small UPS, I have tested that sends the shutdown to the
>>>linux server, but what I would like
>>>to achieve is to for instance to powerup the server at 9 AM and shut it
>>>down at for instance 9 PM.
>>
>>Easy enough with UPS control: put a timer on your AC power (you can get
>>cheep ones at most hardware stores).  Make sure you set the BIOS to start
>>the PC when power resumes.
>>
>>-
>>To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>>the body of a message to majordomo@vger.kernel.org
>>More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 
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> 
> 

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Re: Power Management on a linux server

[Bob Swift]

On Friday 11 April 2003 12:03, Mikel Bauer wrote:

> A hardware solution could be cobbled together by a power timer set to
> turn on at the specified time (with the bios set to turn on on power),
> and set to turn off some period of time after a cron shutdown.  Kinda
> cheezy though...
>
> Obviously, turning the machine off is not a big deal, it's turning it
> back on...

How about using a cron job to shut the system down, then have the timer set to 
turn off the power some reasonable time later (say 10-15 minutes to make sure 
that the shutdown had completed and to allow for any clock / timer setting 
differences?  Then when the system powers back up, same process as the 
suggestion for the boxes connected to UPS.
-- 
Bob Swift

Re: Power Management on a linux server

[Milan P. Stanic]

On Fri, Apr 11, 2003 at 12:03:28PM -0600, Mikel Bauer wrote:
> Obviously, turning the machine off is not a big deal, it's turning it 
> back on...

About: NVRAM WakeUp can read and write the WakeUp time in the BIOS (via
/dev/nvram on recent 2.4.x kernels). On this WakeUp time the computer will
be powered on automatically from the soft-off state.

Changes: This release added support for configuration files, a manual page
for the configuration file, and support for mainboard auto-detection. The
ACTUALLY_WRITE option was removed,as the program now writes by default. A
new option --nowrite option emulates the old default behaviour. Some of
the auto-detection information was guessed and may be incorrect.

License: GNU General Public License (GPL)

URL: http://freshmeat.net/projects/nvram-wakeup/


Milan

Re: Power Management on a linux server

[Miguel González Castaños]

Many thanks for this reply. Sounds exactly what I am looking for. I would need

a software solution rather than a hardware solution, mainly because not all
the PCs
have an UPS connected and are phisycally available.

If you could give more information of which kind of configuration I would need
to set up
in the machine, and if It could be used in any kind of BIOS.

Many thanks

Miguel

"Milan P. Stanic" ha escrito:

> On Fri, Apr 11, 2003 at 12:03:28PM -0600, Mikel Bauer wrote:
> > Obviously, turning the machine off is not a big deal, it's turning it
> > back on...
>
> About: NVRAM WakeUp can read and write the WakeUp time in the BIOS (via
> /dev/nvram on recent 2.4.x kernels). On this WakeUp time the computer will
> be powered on automatically from the soft-off state.
>
> Changes: This release added support for configuration files, a manual page
> for the configuration file, and support for mainboard auto-detection. The
> ACTUALLY_WRITE option was removed,as the program now writes by default. A
> new option --nowrite option emulates the old default behaviour. Some of
> the auto-detection information was guessed and may be incorrect.
>
> License: GNU General Public License (GPL)
>
> URL: http://freshmeat.net/projects/nvram-wakeup/
>
> Milan
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> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
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Re: Power Management on a linux server

[Milan P. Stanic]

On Mon, Apr 14, 2003 at 09:05:55AM +0200, Miguel González Casta?os wrote:

> If you could give more information of which kind of configuration I
> would need to set up in the machine, and if It could be used in any
> kind of BIOS.

BIOS must have support for wake-up, I think. You can try to find
newer BIOS for your mainboard if it doesn't have wake-up feature and
upgrade it.

In the nvram-wakeup package are two README's, read them and you will
know what to do.

Milan
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