Re: [Samba] Re: Best practices for long-running Samba server

2005-01-28 Thread David Landgren
On Thu, 27 Jan 2005 14:14:46 -0800, Spike Burkhardt
[EMAIL PROTECTED] wrote:
 Paul  David,
 
  Good points that I agree with but at least at three managers I've had want 
 to the uptime get bigger  bigger.  Something about the 99.95% uptime
 industry standard. :-(((  Ridiculous.

They are wrong.

Tell them gently that they should not confuse uptime with
availability. A planned reboot at 03:00 that has no effect on the
availability of the server is much better than an unexpected outage at
14:25 because a leaking database backend ate all your shared memory
segments. That does wonders for availability.

If you can't trust your machines to reboot themselves unattended and
bring themselves back up to operational status then you have shall
have to bring a pair of pyjamas into work and set up a cot in the
machine room.

99.95% is about 4 and half hours per year. Ask your managers to cover
you for the allowance of having a server being offline one whole
afternoon per year. Ask for it in writing.

David
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Re: [Samba] Re: Best practices for long-running Samba server

2005-01-27 Thread David Landgren
 The client running our first Samba3 PDC production server had an uptime of 
 115 days, then the uptime got spoiled by them moving to a new building.

I'm not quite sure what the fascination is with long uptimes. It's
good to reboot the system from time to time, not because it needs it,
but just to prove that you still can.

There's nothing like sweating profusely when a server crashes at 9:25
one morning and refuses to come back up and you don't know where to
start looking to make you think that uptimes aren't the be-all and
end-all.
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Re: [Samba] Re: Best practices for long-running Samba server

2005-01-27 Thread Paul Gienger

David Landgren wrote:
The client running our first Samba3 PDC production server had an uptime of 115 days, then the uptime got spoiled by them moving to a new building.
   

I'm not quite sure what the fascination is with long uptimes. It's
good to reboot the system from time to time, not because it needs it,
but just to prove that you still can.
 

Here here.  I've seen it posted elsewhere and it makes a good point -  
long uptimes show that the machine hasn't had its updates run on the 
core OS.  Until you can find a way to reload the kernel without 
rebooting (oxymoron) long uptimes are a mark of lazyness.

What I'd rather see is longest stretch of not having to be rebooted 
between the hours of 7am and 6pm.  Unfortunately the uptime command 
doesn't tell us that ;)

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Paul GiengerOffice: 701-281-1884
Applied Engineering Inc.
Systems Architect   Fax:701-281-1322
URL: www.ae-solutions.com   mailto: [EMAIL PROTECTED]

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Re: [Samba] Re: Best practices for long-running Samba server

2005-01-27 Thread Spike Burkhardt
Paul  David,

  Good points that I agree with but at least at three managers I've had want to 
the uptime get bigger  bigger.  Something about the 99.95% uptime
industry standard. :-(((  Ridiculous.

spike

Paul Gienger wrote:

 David Landgren wrote:

 The client running our first Samba3 PDC production server had an uptime of 
 115 days, then the uptime got spoiled by them moving to a new building.
 
 
 
 I'm not quite sure what the fascination is with long uptimes. It's
 good to reboot the system from time to time, not because it needs it,
 but just to prove that you still can.
 
 
 Here here.  I've seen it posted elsewhere and it makes a good point -
 long uptimes show that the machine hasn't had its updates run on the
 core OS.  Until you can find a way to reload the kernel without
 rebooting (oxymoron) long uptimes are a mark of lazyness.

 What I'd rather see is longest stretch of not having to be rebooted
 between the hours of 7am and 6pm.  Unfortunately the uptime command
 doesn't tell us that ;)

 --
 --
 Paul GiengerOffice: 701-281-1884
 Applied Engineering Inc.
 Systems Architect   Fax:701-281-1322
 URL: www.ae-solutions.com   mailto: [EMAIL PROTECTED]

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Re: [Samba] Re: Best practices for long-running Samba server

2005-01-27 Thread Paul Gienger

The client running our first Samba3 PDC production server had an uptime of 115 
days, then the uptime got spoiled by them moving to a new building.
   

I'm not quite sure what the fascination is with long uptimes. It's
good to reboot the system from time to time, not because it needs it,
but just to prove that you still can.
 

Here here.  I've seen it posted elsewhere and it makes a good point -
long uptimes show that the machine hasn't had its updates run on the
core OS.  Until you can find a way to reload the kernel without
rebooting (oxymoron) long uptimes are a mark of lazyness.
What I'd rather see is longest stretch of not having to be rebooted
between the hours of 7am and 6pm.  Unfortunately the uptime command
doesn't tell us that ;)
   

bigger.  Something about the 99.95% uptime
industry standard. :-(((  Ridiculous.
I tell ya, if 99.95, or 5-9s or whatever metric you use is that 
standard, perhaps they should talk to my cable company :-P

Point somewhat taken.  I say somewhat because if you're offering that 
type of reliability guarantee (which is what it is, says nothing about 
uptime really) then you need redundancy, redundantly.  People that sell 
that kind of uptime have dual/quad/N+1 servers that they provision from 
and that fail over nicely.  People that buy that kind of service pay for 
it, one way or another.  Can't speak about telco numbers, I think you 
can buy that on your OC-X line if you want to pay enough, but I'm not 
sure how THEY do it.

I for one prefer to reboot my machines in the off hours from home and 
drive in to the office when the fertilizer hits the ventilator.  I think 
it's been 2 years since I caused some mid-day downtime on the main 
server in my particular office :-P

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Paul GiengerOffice: 701-281-1884
Applied Engineering Inc.
Systems Architect   Fax:701-281-1322
URL: www.ae-solutions.com   mailto: [EMAIL PROTECTED]

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