Hi All,
We run a very antiquated Oracle 8i infrastructure that will get
replaced by Postgres Real Soon Now(tm). Or so they said 5 years ago.
Anyway, here's my problem:
We have two sites, Alpha, the production site, and Beta, a warm
standby. We're doing transaction log shipping from the production
I'm pretty sure it's Chazwazza
http://etherealmind.com/network-dictionary-chazwazza/
;-)
--Matt
On Thu, Oct 28, 2010 at 2:37 PM, Jim Hickstein wrote:
>> Open to alternate suggestions, of course.
>
> Hexadectet?
> ___
> Tech mailing list
> Tech@lists.l
For what it's worth, we didn't go with ATAoE because it was
essentially supported only by Coraid, and for our production
equipment, that was a bit too precarious for our tastes.
On the other hand, if I had to go with a general purpose cheap array,
it would be hard to pick between ATAoE and the Dro
ZFS on a bunch of flash disks, just that
if I needed a few TB of iSCSI for a lab, it would definitely be on my
list.
--Matt
On Sat, Oct 30, 2010 at 4:26 AM, Brad Knowles wrote:
> On Oct 29, 2010, at 8:29 PM, Matt Simmons wrote:
>
>> On the other hand, if I had to go with a general purpos
I currently use Apptix. Their service is generally reliable, but I
feel like I'm paying a lot, and I don't know how easy it's going to be
to migrate off of them when I eventually do that.
They do offer mail archiving through Global Relay and various levels
of anti-spam technology (all for addition
That was actually the same method that you used to have to use when
updating the headless Xserve compute nodes that they used to sell
which were responsible for making me hate Apple server hardware.
Sans haikus, of course.
--Matt
On Sun, Nov 28, 2010 at 8:07 PM, Tom Limoncelli wrote:
> Target
Hi John,
The reasons to go with fiber over copper are (in order of precedence
in my mind, anyway):
1) Length
If you're over the 100m distance (or really, anywhere close to it),
you'll need to use fiber
2) Interference
Copper cables are subject to EMI, which optical fiber isn't. If you're
runni
Hi everyone...I've got a problem with dhcpd, and I'm tearing my hair out.
I'm building a machine that can be reinstalled automagically using a
combination of PXEboot, kickstart, and magic. I've already done this
once, and it worked great. I copied the exact configuration files,
installed the same
I should, of course have said that I have two ESXi ***GUESTS***, not
hosts. These are two VMs running on the same ESXi machine.
On Mon, Nov 29, 2010 at 4:44 PM, Matt Simmons
wrote:
> Hi everyone...I've got a problem with dhcpd, and I'm tearing my hair out.
>
> I'm buildi
; On Mon, 29 Nov 2010, Matt Simmons wrote:
>>
>> group {
>> next-server 10.x.1.91;
>> filename "pxelinux.0";
>>
>> host ops1tp {
>> hardware ethernet 00:0c:29:2d:ea:5a;
t I really wish I could
figure out what the difference is between the good one and this one.
--Matt
On Mon, Nov 29, 2010 at 5:18 PM, Cat Okita wrote:
> On Mon, 29 Nov 2010, Matt Simmons wrote:
>>
>> I agree, and tftpd is running on 10.x.1.91 (which is the IP of the
>> mac
set vendorclass = option vendor-class-identifier;
> class "PXE" {
> match if substring(option vendor-class-identifier, 0, 9) = "PXEClient";
> next-server 10.x.1.91;
> filename "pxelinux.0";
> }
>
>
>
> On Mon, Nov 29, 2010 at 5:37 PM
at to get new ways to look at a problem.
--Matt
On Mon, Nov 29, 2010 at 4:44 PM, Matt Simmons
wrote:
> Hi everyone...I've got a problem with dhcpd, and I'm tearing my hair out.
>
> I'm building a machine that can be reinstalled automagically using a
> combination of PXE
The people who are typically great at giving you surface info, but for
anything you're remotely interested in spending actual money on, you
need to use the sales person to arrange a meeting between you and an
engineer.
You don't base your purchases on the sales brochure, so don't base
them on the
Hi everyone...I've got a problem with dhcpd, and I'm tearing my hair out.
I'm building a machine that can be reinstalled automagically using a
combination of PXEboot, kickstart, and magic. I've already done this
once, and it worked great. I copied the exact configuration files,
installed the same
I'm against Fedora servers for a bunch of reasons, but the most
pressing is that their stability of package selection is not what I'd
call spectacular.
It's much better, in my opinion, to go with something like CentOS (or
Scientific Linux), which is a RHEL-clone, than with what is
essentially the
For the times where whatever application EXPRESSLY NEEDS (emphasis
mine, usually) a newer version of the software (or $DEITY forbid, an
unsupported package), I can usually find it in EPEL (with
yum-priorities configured, please), and if it isn't there, then I
usually package my own version from the
I just decided to do some quick tests on my system, and here's what I got...
The setup is kernel 2.6.18-92.1.13.elPAE (it's an older machine, so
this may be part of the problem). It's got a 4GB FC HBA connected to
an EMC AX4 that is definitely not optimized.
Anyway, the hardware doesn't change be
, or long, at 60 minutes).
PICC Chair Matt Simmons spoke about the increased availability of
lengths and formats, saying, “This is a community conference, and
we’re trying to encourage more members of the community to
participate. By being open to presentations of varying time and
content, we’re
Andrew,
Once you get this problem out of the way, I cannot recommend learning
how to package RPMs highly enough. I don't compile _anything_ on my
production servers anymore. I create packages on a development
server, test them on workalike servers, install the packages into an
internally-hosted r
Do all of your users need to access this server, or can you
selectively predetermine who has access, and explicitly permit their
traffic through the firewall?
--Matt
On Tue, Jan 18, 2011 at 8:19 PM, Ski Kacoroski wrote:
> Hi,
>
> My problem is that I have a very badly written application that (
I always just type the words that I think will appear in the answer
I'm looking for.
On Thu, Jan 13, 2011 at 11:31 AM, Andrew Hume wrote:
> just type the question you would have asked verbally.
>
> so whereas i had been googling for "ld can't find so.1" or somesuch,
>
> i typed "why doesn't the l
I've been using O'Reilly's IPv6 Essentials
(http://www.amazon.com/IPv6-Essentials-ebook/dp/B0043EWVAG) and
supplimenting it with discussions on YouTube and blog entries.
On Tue, Feb 1, 2011 at 6:08 PM, Tom Perrine wrote:
> Anyone have a book they like for IPv6? You can assume that the audience
I don't know of an existing program to do exactly that, but it sounds
like a good use case for a script (powershell is probably preferable).
It looks as though you can disable logins to a particular server with
Change logon /disable
(According to http://support.citrix.com/article/CTX564871)
You
Given that I haven't implemented IPv6 in the least, I probably
shouldn't be wading into this discussion, but I've read a bit about it
a bit. That may not mean so much, though...
So anyway, as I understand it, IPv6 addresses are all about the
address prefix...and one of the prefixes is a link local
So when you say you are running out of swap memory, you really do mean
that you're actively using (allocating, freeing, and allocating again)
swap memory?
This is probably a bad thing.
Apologies if you already know what I'm about to write, but hopefully
it'll be useful to someone...
It's relativ
In my mind, it's better to have too little than too much, because you
can always allocate more on the fly if you need it (with mkswap on a
file, followed by swapon), but fixing a system that uses a huge
monolithic chunk of swap is sometimes difficult.
--Matt
On Wed, Apr 20, 2011 at 11:13 AM, Dan
Very cool link! Thanks!
On Wed, Apr 27, 2011 at 9:41 AM, Charles Polisher wrote:
> Charles Jones wrote:
>> 2011/4/26 Shawn Badger
>>
>> > I am a huge fan of Zabbix http://zabbix.com.
>> >
>>
>> I was waiting for you to recommend Zabbix :)
>
> http://www.unixdaemon.net/sysadmin/zabbix-guis-and-a
Have you read this (and the linked documents)?
http://www.virtualizationteam.com/virtualization-vmware/vmware-vi3-virtualization-vmware/dont-use-vmware-raw-device-mapping-rdm-for-performance-but.html
--Matt
On Mon, May 16, 2011 at 12:00 PM, Tim Kirby wrote:
> So, given the following:
>
> ESXi 4
Actually, the original link is a bit old
http://www.vfrank.org/2011/03/22/performance-rdm-vs-vmfs/
is newer
On Mon, May 16, 2011 at 12:50 PM, Matt Simmons
wrote:
> Have you read this (and the linked documents)?
> http://www.virtualizationteam.com/virtualization-vmware/vmware-vi3-virtuali
I'll second OpenFire. It's free, Open Source, and does all of what you
want (plus you can authenticate it with AD/LDAP)
--Matt
On Tue, May 31, 2011 at 5:27 PM, Kristopher Zentner
wrote:
> I'll put in my 2¢ for Ignite Realtime's Openfire. It's a Java based server
> that runs on Linux or Windows
Did anyone ever get in touch with you about this?
--Matt
On Fri, Jun 10, 2011 at 10:45 PM, Kyle Fulton wrote:
> Does anyone know who you need to get ahold of about lopsa membership
> not showing up in my account? I've sent a few emails over the course
> of a few weeks to custserv...@lopsa.org wi
Not that it may help in this particular circumstance, but whenever I find
that I have a bizarre problem that can't be easily lumped onto some other
subsystem, I usually suspect DNS.
On Wed, Aug 3, 2011 at 10:47 PM, Patrick Cable wrote:
> I swear, not all my questions are NFS related. Just the we
In fact, some switches have a firmware toggle to reverse the fan direction.
On Thu, Oct 20, 2011 at 3:00 PM, Brian Mathis <
brian.mathis+lo...@betteradmin.com> wrote:
> On Thu, Oct 20, 2011 at 2:26 PM, Luke S. Crawford wrote:
> >
> > I've been mounting switches backwards forever; I mean, the p
Rik Farrow teaches a really good class at LISA called "Re-enabling SELinux"
- I reviewed it here:
http://blogs.usenix.org/2009/11/02/re-enabling-selinux-training/
That might be useful for someone who's considering using SELinux in
production and is headed to LISA next month.
--Matt
On Fri, Nov 1
Would it make sense to have a general "Conferences" mailing list to discuss
all-things conference related, rather than create several lists?
--Matt
On Wed, Nov 30, 2011 at 4:55 PM, Matt Disney wrote:
> A few comments:
>
> I'm glad to have feedback about this since people have questions or
> c
Is there a reason that you can't just use VMware's built-in USB
passthrough?
http://pubs.vmware.com/vsphere-4-esx-vcenter/index.jsp?topic=/com.vmware.vsphere.vmadmin.doc_41/vsp_vm_guide/configuring_virtual_machines/c_configuring_usb_passthrough_devices_for_vmotion.html
--Matt
On Thu, Dec 8, 2011
This guy on ServerFault recommends it, too -
http://serverfault.com/a/27514/4392
I think it's going to boil down to practice. Work on doing it to something
that doesn't hate being unplugged so much as a computer does. Maybe a
monitor or something similar.
--Matt
On Thu, Dec 29, 2011 at 11:17 PM
I'm not sure if it's been mentioned in this thread or not (if so, please
forgive me), but do be aware that Linux software RAID does not pass the
TRIM command through to the underlying disks, so I wouldn't do it with SSD.
For spinning disks, though, yes.
--Matt
On Tue, Jan 3, 2012 at 3:16 PM, Adam
What kind of output would you be expect from a script like that?
On Mon, Jan 9, 2012 at 11:45 AM, Mark McCullough wrote:
> Anyone seen a perl module, C library call, shell script, or something that
> could actually make sense of the syslog-ng configuration file? We need to
> use a tool that woul
Would the symlinks contained in /dev/disk/by-uuid be sufficient?
--Matt
On Thu, Apr 12, 2012 at 11:18 AM, Michael C Tiernan <
michael.tier...@gmail.com> wrote:
> I am working on a small project and I have the need to identify the root
> volume on a running linux system from inside a script.
atically assigned"
>
> SSSD seems to hold a lot of promise. I just can't get my head around the
> documentation.
>
> Many thanks,
> Jonathan.
>
>
>
> On 01/05/2012 12:30, Matt Simmons wrote:
>
> Hi Jonathan,
>
> Off-topic, but to the best of my know
It's not just month. It's year, as well (or at least 1 in 4 years will be
off). Also, seconds can actually be 0-61 to account for leap seconds.
Basically we just need to know and document how the relative time periods
work in order to use them. The behavior isn't terrible as long as it's
predictab
AFAIK, the "high water mark" thing in Linux swap is because the dirty pages
in memory still haven't been written or are in use.
When a page of memory is swapped to disk, it's because that memory is in
use, and has changed from the on-disk data (or has been generated, or
whatever), it can't just be
Hi John,
According to the Wiki page (
http://en.wikipedia.org/wiki/IBook#iBook_G3_.28.22Clamshell.22.29) they can
all run OS X 3.9 Panther, and the last one can run Tiger.
If you don't want to upgrade it (or can't find that version), you might
want to check out this MacOS Abandonware site:
https:
At a small site, I did automated installs using kickstarter and a USB boot
disk. Since I didn't need to image dozens of machines, it worked ok.
In a larger environment now, we use PXEboot, and we're getting ready to
move into some other, more managed boot solution (something along the lines
of Raz
I've heard good things about Dell's Compellent and Equallogic lines. I
think the real crux of the matter is how fast you need it to be.
--Matt
On Fri, Jan 25, 2013 at 9:07 AM, Craig Cook wrote:
> We have around 200TB of dev/QA storage that is across 3 SAN's. (EMC VMAX
> and IBM XIV's)
>
> Serve
I think that's very dependent on switch support, too. It's been a few years
since I looked into it.
On Wed, Jan 30, 2013 at 3:57 PM, Derek Balling wrote:
> I remember being told that this wasn't inherently possible, but that the
> way you do it was to do all four as a single LACP instance.
>
> I
Hi,
So, my current situation is that I'm working in a datacenter with 21 racks
arranged in three rows, 7 racks long. We have one centralized distribution
switch and no patch panels, so everything is run to the switch which lives
in the middle, roughly. It's ugly and non-ideal and I hate it a bunch
To add to Mario's excellent post, if you're running --delete, don't
forget about --force to remove empty directories.
--Matt
On Wed, Feb 27, 2013 at 6:33 PM, unix_fan wrote:
> My additional $0.02 on rsync use:
> 1. Use the -n flag first
> If you are an rsync neophyte, I strongly recommend using
The problem comes when they cross L3 boundaries. Enterprise wireless
infrastructures (or campus-wide installations) do tunneling of the device's
traffic back to the original AP they authenticated to, all with seamless
handoff.
--Matt
On Sat, Apr 6, 2013 at 7:50 PM, David Lang wrote:
> why doe
ad the archives of EDUCAUSE's WIRELESS-LAN listserv to
>> get a flavor of their challenges.
>>
>
> Thanks, I'll look around there.
>
>
> David Lang
>
> Frank
>>
>> -Original Message-
>> From: David Lang [mailto:da...@lang.hm]
>>
-MS
On Sat, Apr 6, 2013 at 10:09 PM, Matt Simmons wrote:
> >how large do you need to be fore this to break? I've done this at
> conferences with over 2000 people, 40 APs across a large hotel. >There were
> no signs of problems. I'm interested to learn what problems t
> On Sat, 6 Apr 2013, Matt Simmons wrote:
>
> how large do you need to be fore this to break? I've done this at
>>>
>> conferences with over 2000 people, 40 APs across a large hotel. >There
>> were
>> no signs of problems. I'm interested to learn
The L2 broadcast domain would grow...excessive, I suspect. If you've got a
campus large enough to require this, you've got enough people and devices
that you're probably don't want them all on the same subnet. Again, just
guessing. I've never dealt with a network this large - my largest is my
curre
I can count the number of times I've wanted to open the case on a running
server to hotswap a part on zero hands.
The idea behind them was sound back when you had 4+u snowflake machines
that weren't clustered, and you couldn't afford to take your standalone
mail server down to replace a bad stick
Hi Conrad,
I think the easiest and best way to show your appreciation is to take your
sysadmins out to lunch and tell them that you appreciate them. Ask their
opinions on how things are going, listen to what they say and consider it,
even if you can't ultimately take their suggestions.
If there a
les Fidelman
> >>> Sent: Wednesday, July 24, 2013 6:32 AM
> >>> Cc: tech@lists.lopsa.org
> >>> Subject: Re: [lopsa-tech] sysadmin day?
> >>>
> >>> Of course that's exactly when everyone's beepers will go off :-)
> >>>
> >>
Hello!
Matt Simmons here from the LOPSA Communications Committee.
On the Board, we've been discussing the recent thread where it was proposed
to merge the LOPSA-Discuss and LOPSA-Tech lists. While there's a lot of
merit to the idea, there is also the same argument that caused them to
There's some good information in this thread from /r/netsec:
http://www.reddit.com/r/netsec/comments/26pz9b/truecrypt_development_has_ended_052814/
You might also want to read this article from The Register, linked to from
that reddit thread:
http://www.theregister.co.uk/2014/05/28/truecrypt_hac
I have an interesting use case.
Because of a lack of space, a few machines which were "free range" in a
locked office are now going to have to go into a shared space. The powers
that be are concerned about the security of these machines, both in terms
of the hardware being "liberated" and data exf
As of a major version ago on ESXi, it was considered best practice to run
ntpdate in a cron rather than ntpd on VMs, particularly if you weren't
using the most up-to-date VMware tools (and I believe they recommended the
VMware version, rather than open-vm tools).
I've also seen that behavior when
I haven't used VB since somewhere around 2000, but in general, when it
comes to subject on Windows, I'm a big fan of the Unleashed series. The
newest one looks like it is from 2012:
http://www.amazon.com/Visual-Basic-2012-Unleashed-2nd/dp/0672336316/ref=sr_1_1?s=books&ie=UTF8&qid=1418640847&sr=1-1
Awesome, thanks for letting us know about this. Done:
https://twitter.com/standaloneSA/status/550405577076396032
--Matt
On Wed, Dec 31, 2014 at 4:27 PM, Yves Dorfsman wrote:
>
> Somehow related to the thread on programming languages, if you tweet the
> list
> of languages you used in 2014 to
Here's the archive.org history. I'm honestly not certain what to make of it
https://web.archive.org/web/*/https://spideroak.com/canary
On Thu, Oct 22, 2015 at 9:10 AM, Edward Ned Harvey (lopser) <
lop...@nedharvey.com> wrote:
> For anyone who doesn't know, a warrant canary is when a company li
15 at 9:14 AM, Matt Simmons wrote:
> Here's the archive.org history. I'm honestly not certain what to make of
> it
>
> https://web.archive.org/web/*/https://spideroak.com/canary
>
>
>
> On Thu, Oct 22, 2015 at 9:10 AM, Edward Ned Harvey (lopser) <
> lop
Ah, that makes a lot of sense, then. The canary itself seems to contain
three sets of signer sigs (Dawin, OpenBSD, and v1). That also explains the
headline change.
Nice.
On Thu, Oct 22, 2015 at 9:17 AM, Evan Pettrey wrote:
> The article here has a fair explanation:
> http://techcrunch.com/2014/
When on a NetApp, I've seen most people use the NetApp VMware connector for
snapvaulting. I don't know how it operates at that scale, but I imagine it
could scale out. You have 75 datastores... I just don't know what would be
required to make it performant at that extreme.
The NetApp dude at our c
More often than not, my typical terminal interface looks like this:
http://i.imgur.com/XndR2tp.png
I have at least one tmux window running, with several panes. In the example
screenshot, I have vi running on the left side, on the right side top, I'm
editing a puppet file, and on the bottom right,
as much as
> tmux, certain distros don't have tmux in the official repos.
>
> On Thu, 2015-10-29 at 08:03 -0700, Matt Simmons wrote:
> > More often than not, my typical terminal interface looks like this:
> >
> > http://i.imgur.com/XndR2tp.png
> >
> > I have
Hi Ed,
There's some good information here:
https://www.blackhat.com/docs/us-14/materials/us-14-Oh-Reverse-Engineering-Flash-Memory-For-Fun-And-Benefit-WP.pdf
Basically though, USB drives are cheap, and they're frequently disconnected
from power for extended periods of time, plus the flash control
I have friends that do the equivalent to this with Cradlepoint devices:
https://cradlepoint.com/products-and-services/wireless_routers
They have devices that support multiple cellular modems, too.
--Matt
On Mon, Apr 25, 2016 at 6:32 AM, john boris wrote:
> Where I coach Football they have de
In Linux, I prefer bash for simplicity, until I have to do floating point,
or I find myself needing to do more complicated API calls than I want to do
with curl. Then I switch to Python.
In Windows, it's Powershell or bust.
--Matt
On Thu, May 12, 2016 at 9:21 PM, Dave Close wrote:
> I am astou
Hi guys,
For some reason, I'm still on this list. It's low traffic, but if you could
remove me, that would probably be best.
All the best,
--Matt
On Wed, Jun 1, 2016 at 7:04 AM, john boris wrote:
> I can only assume that rt is on lopsa-sb1 as that is down as well.
>
> --
> John J. Boris Sr.
Ah, I thought this went to tech-team. My bad. Thanks!
--Matt
On Wed, Jun 1, 2016 at 11:26 AM, Matt Simmons wrote:
> Hi guys,
>
> For some reason, I'm still on this list. It's low traffic, but if you
> could remove me, that would probably be best.
>
> All the best,
Since documentation necessarily lags source, this may be a case of needing
to actually browse the source code for the kernel version you're dealing
with. I don't know of any in-kernel or in-userspace tool that would give
you the information that you want. Even the options themselves are
sometimes d
Have you considered using a Wordpress plugin to upload the files to an API,
rather than a filesystem? If this were a swarm of machines in Amazon, for
instance, the S3 plugin would make lots of sense. (It would still make
sense if you were using Riak (or some other local S3-compliant object
store)).
77 matches
Mail list logo
