Re: Freebsd 5.3 - long uptimes...

2005-01-09 Thread Garance A Drosihn
At 4:26 PM + 1/9/05, Robert Watson wrote:
On Sun, 9 Jan 2005, Mark wrote:
  FreeBSD will run for years without a boot in many cases.
  Ah, this point fascinates me. Running for years? Do you ever
  have to recompile your kernel? :)
The longest personal uptime I've had is just under two years, and
that was for a UPS-backed natbox in my parents' basement.  [...] At
some point, the power went out for longer than the UPS could keep
it up, so the uptime went tumbling down...  I think it was up for
about 540-550 days at that point.
My main production-system use of FreeBSD is for a chat server,
which needs to be up all the time or everyone stops chatting and
starts yelling at me.  The longest uptimes I've had so far are:
* 373 days 10 hours   (a 6-hour long power outage)
* 599 days 14 hours   (a UPS melt-down failure)
* 497 days 18 hours   (hard disk failure)
The third one many really have been an OS failure, which I will not
bother trying to describe in detail...
One problem with long uptimes like that:  If the system does finally
die due to an OS error, it is hard to get motivated to track it down.
After all, the OS has had two years worth of changes committed to it
since the time you compiled the snapshot which *maybe* has an error!
To remain safe when going for long uptimes like this, I had a second
machine running the same release of FreeBSD, and I could build the
latest snapshot of the OS on that.  I would then then copy over the
bits and pieces needed to keep the production system safe (such as
new versions of sendmail or sshd).
--
Garance Alistair Drosehn=   [EMAIL PROTECTED]
Senior Systems Programmer   or  [EMAIL PROTECTED]
Rensselaer Polytechnic Instituteor  [EMAIL PROTECTED]
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Re: Freebsd 5.3 - long uptimes...

2005-01-09 Thread Garance A Drosihn
At 7:27 PM -0500 1/9/05, Garance A Drosihn wrote:
My main production-system use of FreeBSD is for a chat server,
which needs to be up all the time or everyone stops chatting and
starts yelling at me.  The longest uptimes I've had so far are:
* 373 days 10 hours   (a 6-hour long power outage)
* 599 days 14 hours   (a UPS melt-down failure)
* 497 days 18 hours   (hard disk failure)
I should note that the above uptimes were running 4.x systems (and
the first one *might* even be a 3.x system).  While I had forgotten
that subject was talking about FreeBSD 5.3, I obviously have not
been running 5.3 for the past four years!
--
Garance Alistair Drosehn=   [EMAIL PROTECTED]
Senior Systems Programmer   or  [EMAIL PROTECTED]
Rensselaer Polytechnic Instituteor  [EMAIL PROTECTED]
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Re: Freebsd 5.3 - long uptimes...

2005-01-09 Thread Chris
Garance A Drosihn wrote:
At 7:27 PM -0500 1/9/05, Garance A Drosihn wrote:
My main production-system use of FreeBSD is for a chat server,
which needs to be up all the time or everyone stops chatting and
starts yelling at me.  The longest uptimes I've had so far are:
* 373 days 10 hours   (a 6-hour long power outage)
* 599 days 14 hours   (a UPS melt-down failure)
* 497 days 18 hours   (hard disk failure)

I should note that the above uptimes were running 4.x systems (and
the first one *might* even be a 3.x system).  While I had forgotten
that subject was talking about FreeBSD 5.3, I obviously have not
been running 5.3 for the past four years!
Long uptimes = unsecured+unpatched boxes.
Long uptimes? No thanks.
--
Best regards,
Chris
Magellan was the first strait man.
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Re: Freebsd 5.3 - long uptimes...

2005-01-09 Thread Garance A Drosihn
At 8:13 PM -0600 1/9/05, Chris wrote:
Long uptimes = unsecured+unpatched boxes.
Long uptimes? No thanks.
If you had read my earlier message, you would see that I take steps
to keep the important components patched, and thus my machine has
been as secure as a freshly-built system.  Long uptimes are just a
nice goal that I try for, so if there was a security issue where I
*had* to reboot to fix it, I certainly would do so.
My strategy works for me because I have spare machines, and I am
constantly paying attention to freebsd changes.  The strategy will
not work as well for people in different situations than mine.
--
Garance Alistair Drosehn=   [EMAIL PROTECTED]
Senior Systems Programmer   or  [EMAIL PROTECTED]
Rensselaer Polytechnic Instituteor  [EMAIL PROTECTED]
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Re: Freebsd 5.3 - long uptimes...

2005-01-09 Thread Anthony Atkielski
Chris writes:

C Long uptimes = unsecured+unpatched boxes.
C Long uptimes? No thanks.

Most vulnerabilities are in daemons or other programs outside the
kernel, so one need not necessarily boot the machine to fix them.

-- 
Anthony


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