Bill Bogstad wrote:
> Edward Ned Harvey (lopser)
> recovery industry would be of interest. For example, I don't have
> the physic background to even intelligently guess if individual
> magnetic regions/domains on a drive platter will degrade their
> neighbors over time, but someone else might. A
shell objects
Christopher A. Jones
ISBN 0-7645-7004-8
http://www.amazon.com/dp/0764570048
Fascinating read. Highly recommended.
HTH,
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On Tue, Nov 18, 2014 at 10:54:48AM -0800, Paul Heinlein wrote:
> On Tue, 18 Nov 2014, Yves Dorfsman wrote:
> >du -sh /blah |sort -h
>
> I think Ari's goal was to list the ten largest directories; sort -n
> won't work as expected when piped output from du -sh.
works perfectly on Red Hat 6:
du
Salt were not on our radar at the time.)
While choosing Puppet was not a killer, I wouldn't choose it
again without first trying other solutions. I hope never to
build more than 4 servers in a system without using an automated
deployment/configuration manage
Tom Throckmorton wrote:
> Charles Polisher wrote:
>
> > Wish I knew a metric to expose CPU cycles you didn't get because
> > some other VM was sucking them up. Maybe L2 cache misses or TLB
> > misses would be revealing. Maybe low CPU utilization when you
&
evaluate node congestion but it's more effort and
typically takes hours to collect data.
Wish I knew a metric to expose CPU cycles you didn't get because
some other VM was sucking them up. Maybe L2 cache misses or TLB
misses would be revealing. Maybe
96
Solution: The soft lockup messages are not kernel panics, and
can be safely ignored. Some kernels allow you to adjust the soft
lockup threshold by running the command:
echo time > /proc/sys/kernel/softlockup_thresh
Where time is the number of seconds after which a soft lockup is
reported. Th
David Bronder wrote:
> > rpm -qa --queryformat '%-30{INSTALLTIME} %-30{NAME}\n' | sort -n
>
> Or simply "rpm -qa --last".
I was unaware. Nice!
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Betsy Schwartz wrote:
> I've been handed a pre-production cluster that was rolled back from Oracle
> RHEL6 UEK3 to UEK2, because it was having mysterious performance and
> authentication issues. It is now having mysterious performance,
> authentication, and multipath issues. All necessary services
Will Dennis wrote:
> Which version of SMB are we talking about here? (CIFS == pre
> SMB 1.0, i.e. the NT4.0 proto) MSFT is shipping SMB 3.02 now on
> Server 2012 R2, which is extremely high-performance (so much so
> that they allow SQL Server DB file access as well as Hyper-V VM
> file access over
of training and support burdens.
HTH,
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Mathew Snyder wrote:
> Looks like Trello has some fans. I'll give that a go in addition to the few
> others mentioned as well as another I found: http://www.tinypm.com.
>
> Dhanasekaran Anbalagan
> wrote:
> > you can consider blossom.
> > https://www.blossom.io/
> >
> > Will Dennis wrote:
> >
> >>
On Wed, Apr 16, 2014 at 09:45:55PM -0600, Yves Dorfsman wrote:
> On 2014-04-16 21:14, Matt Okeson-Harlow wrote:
> >
> >If it is taking a long time to push pubkeys out, is this possibly due to the
> >number of forks? Before 1.3 I believe the default was 5.
> >
> >Are keys pushed out as part of a ma
Luke S. Crawford wrote:
> so, I've been having some problems with packet loss that I have
> reason to believe have to do with "microbursts" of malicious
> traffic.
>
> What I want is a tool that will detect these 'microbursts' and give
> me a very detailed report of the packets flowing during the
article points
out, Monte Carlo simulation is also used to compute MTTDL
figures in relative time, which obviates the shortcoming with
Markov methods for this purpose.
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template for our RHEL 5/6
Oracle db servers, OFM app servers, file servers, etc.
+ Integrates well with Puppet.
- UI is a little clunky, but steadily improving.
- Integration with VMWare workstation didn't extend
to VMWare ESXi last time we investigated (wasn't
a
"the munged value is $j"
# (work with with $j without bothering about apostrophe's)
k=`echo "$j" | sed "s/_MY_QUOTE_/'/g"`
echo "The original value is $k"
Applied consistently, these idioms will save you lots
of time and frustration.
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On Mon, Nov 04, 2013 at 05:28:51PM +, James R Grinter wrote:
> I'm not really looking for a tool as complex and powerful as Splunk
> or greylog, either. Something that can watch a log file, match a
> pattern, and execute a command is all I need right now.
1. Nagios can watch for log messages,
On Wed, Oct 30, 2013 at 10:22:45PM +, Edward Ned Harvey (lopser) wrote:
> > From: Brandon Allbery [mailto:allber...@gmail.com]
> >
> > And it prevents the head scribbling garbage during a power failure how?
> I acknowledge that during a power cut, the drive may fail to
> complete write instru
On Tue, Oct 29, 2013 at 05:54:46PM -0700, Mathew Snyder wrote:
> As for the scripting, we don't push out any commands such as shutdown. The
> scripts simply report which servers have mounts in an unexpected RO state.
Probably you know this - on RHEL5/6 you can restore RW with
# mount -oremount
is great for offline backups. I think LTO-5
implements Reed-Solomon erasure coding within each block.
Objects distributed across physical devices is even better.
I also like the "erase everywhere" capability of encrypted
backups (with suitable key management). Erase the key and
every enc
p0
exit 0
fi
If you're interested in the security of full-disk encryption (of
which this is a variant), you'll want to see this -
http://opensource.dyc.edu/sites/default/files/random-vs-encrypted.pdf
Good luck,
--
Charles Polisher
__
data. I do not believe this
reflects the underlying reliability of all tape. I'm a tape
believer. But not in the tape systems in my shop. Possible
contributing factors: lossy optical fiber links, equipment
maintenance issues, unlimited tape lifetimes. YMMV.
--
Charles Polisher
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Phil Pennock wrote:
> Charles Polisher wrote:
> > There's an interesting blog post on this -
> > http://utcc.utoronto.ca/~cks/space/blog/sysadmin/WhyNotEtckeeper?showcomments
> > which observes that with etckeeper & friends you'll be fighting
> > your p
h observes that with etckeeper & friends you'll be fighting
your package management system. Some good point/counterpoint in
the comments, too.
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> This might be useful:
>
> http://www.team-cymru.org/Services/ip-to-asn.html
>
> I've used the DNS service to do a few thousand lookups but for a
> million request you probably want to use the "bulk whois" service.
>
> On Mon, 25 Feb 2013, Andrew Hume wrote:
> >i am asking this for a friend who
On Dec 24, 2012 at 03:26:02PM +, Edward Ned Harvey (lopser) wrote:
> Without any special requirements, why don't you just run
> software? If everything in the network is in-sync with each
> other, +/- a couple of seconds, is that good enough? Like I
> said, this is what I do - I haven't yet
Howard Bampton wrote:
> Todd D. Taft wrote:
> > Thanks to a reorganization, I have to move about 50 Linux systems from the
> > LDAP server run by one group to the LDAP server run by a different group.
> > In most cases, the UIDs (uidNumber) and GIDs (gidNumber) for a given user or
> > group don't
On Wed, Oct 03, 2012 at 07:34:14AM -0400, Tom Limoncelli wrote:
> We're in total agreement. I'm describing how most (but not all)
> companies are, and you are describing how they should be (and some
> are).
Adjusting the bar upwards can be a challenge. There's a
widespread meme that doing things r
ot;A NonStop kernel" Joel F. Bartlett (Tandem Computers)
Proc 8th symp on OS principles 1981 pp.22-29 ISBN 0-89791-062-1
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.134.6373&rep=rep1&type=pdf
( http://preview.tinyurl.com/8g842c7 )
http://e
mer of Popping Power Supplies. But that's a
story for the Monastery.
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Jake Mohnkern wrote:
> >>Does anyone have any experience with Eaton UPSes?
> As to the long term reliability of the new models I cannot say. So far so
> good.
Last year our Eaton UPS let the magic smoke out of an HA module
that was supposed to make sure one or the other redundant UPSen
was carr
Funny thing -- in the process of moving I'm ejecting my
collection of SCSI gear. I've got a non-OEM Adaptec 29160 in
front of me that would have been in a dumpster next week. The
label on the big chip == "ASC-29160 '00 1858200 F 0522".
ng tool might
be configured to serve. Most of the pieces must have been
worked out by now, but I haven't yet found an open solution
with a wide-enough scope. If I could get time management under
control I could research integrating the current toolchains :).
A Nov 2010 post on www.unixdaemon.n
files. For
me, that's a clear win for Nagios. All Nagios installations are
not alike. A fully built-out Nagios site (live):
http://nagios.wikimedia.org/
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new server
Compared to $nnn cost per month for existing server with
say 20A service.
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On Thu, Mar 31, 2011 at 09:56:11AM -0400, Chris Hoogendyk wrote:
>
> On 3/31/11 9:20 AM, Charles Polisher wrote:
> >>
> >>
> >>
Apparently when I unwisely omitted the attribution, you
picked up what I /quoted/ as what I /said/. I didn't say that.
What I
result is an average
transfer rate
equaling the specified limit. A value of zero specifies no limit.
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ur process and make corrections to it. From a Systems Admin
viewpoint it's ... challenging. Silver lining: I get to
sharpen my troubleshooting and integration skills.
TL;DR: 2. Outsource if you must. Be careful with due diligence.
[*]
https://secure.wikimedia.org/wikipedia/en/wiki/Hobo_sign
//secure.wikimedia.org/wikipedia/en/wiki/Persuasion
[3] https://secure.wikimedia.org/wikipedia/en/wiki/K%C3%BCbler-Ross_model
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