in general is an admin headache with severe
penalty for error.
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on the Realtek RTL8188CUS chipset and uses
the rtl8192cu kernel driver.
those are only 11N adapters, the OP asked about a 11AC card.
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potentionally helpful
http://elrepo.org/tiki/wl-kmod
it appears those are closed source drivers with funky licenses, so they
can't just be redistributed without assumption of liability.
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server just has a single SATA disk,
you're doing 9 million committed writes combined to the two tables?
20 minutes for 9 million inserts, thats 7500 per second.
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of
network control of power management.
here's the project site for an overview... http://networkupstools.org/
nut is in EPEL
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On 11/16/2017 10:34 PM, Sorin Srbu wrote:
It is, thank you!
Real life experiences are worth a lot to me, thanks again.
the problem is, a couple year old model is probably core gen 5... a new
one will be core gen 7, Kaby Lake, and thats where there are more likely
problems.
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idmap config * : backend = tdb
These are what I added when upgrading from C5's Samba 3 to C7's Samba 4.
if you're coming from C6, I do believe I'd add these one at a time, as
C5 was *way* older.
in particular, I suspect 'max protocol = SMB2' isn't going to play well
with win10.
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reasonably well at like 20-30 feet. if there's active nearby
wifi on 2.4Ghz, forget it, much closer.
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a sketchy, thats Core gen 7. (i-7xxx).
I'm not sure what the state of Skylake is (gen 6)
Broadwell should be very solid at this point (5th gen), that was new in
early 2015.
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servers.
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25 x 2.5" drives
(and x5660 and more ram), they are workhorses.
A couple years ago, yes. Now, not anymore.
https://www.ebay.com/i/253122917302?chn=ps=1
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em, files
tend to get written sequentially, and stored for a long time.
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4 HP trays, dual X5650. its
a personal/charity server sitting at a coloc here in town. I have
several of the same model server at work with 25 x 2.5" drives (and
x5660 and more ram), they are workhorses.
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something else and
enjoy the disadvantages, but why would you.
rack servers tend to be rather noisy, if they are being used in a SMB or
SOHO environment you're probably looking at a tower server.
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On 11/2/2017 2:35 PM, m.r...@5-cent.us wrote:
John R Pierce wrote:
On 11/2/2017 2:18 PM,m.r...@5-cent.us wrote:
We have a fair number of SAS 3.5" drives, and yes, 10k or 15k speeds.
those are internally 2.5" disks in a 3.5" frame. you can't spin a 3.5"
disk much
+= 1
if bad:
print '\nThere is at least one disk/array in a NOT OPTIMAL state.'
sys.exit(1)
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On 11/2/2017 2:18 PM, m.r...@5-cent.us wrote:
We have a fair number of SAS 3.5" drives, and yes, 10k or 15k speeds.
those are internally 2.5" disks in a 3.5" frame. you can't spin a 3.5"
disk much faster than 7200 rpm without it coming apart.
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ge
capacity bulk 'nearline' storage which is typically sequentially written
once
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Dell also have the XPS 13 "developer edition" for those looking for a
smaller footprint.
i forget the distro offhand, but someone has a latest-and-greatest
kernel for CentOS 6 & 7 which greatly helps with modern hardware support.
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is
coming from the CPU itself.
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ce separation (which I'm used to have
control over in case of FreeBSD jail).
Am I wrong, and what am I wrong about?
while I've never used them, my understanding is, lxcontainers are at the
level of a jail, network isolation as well as file system.
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to the graphic screen with the blue startup bar or whatever,
I believe you can hit ESC to get the console messages.
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lvm stuff, then copy the file
systems across with dump or xfsdump or whatever, swap the devices and
boot. this way the old disk is a safe backup. heck, /boot can be a
SD card or USB stick :-p
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On 10/10/2017 6:50 PM, John R Pierce wrote:
Your root filesystem is in an LVM volume. CentOS 6 is still using
GRUB legacy, which does not support /boot in LVM.
says up there, /boot is /dev/sda1, this is almost exactly the config
of my C6 servers.
never mind, I realized after I sent
-lv_home
861G 371G 447G 46% /home
Your root filesystem is in an LVM volume. CentOS 6 is still using GRUB
legacy, which does not support /boot in LVM.
says up there, /boot is /dev/sda1, this is almost exactly the config of
my C6 servers.
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of the article is that they got at best 2-4% improvements with
RHEL 6/SLES 6 on dual nehalem/westmere Xeon's when NUMA was enabled. I
see no mention of NUMA Split mode
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On 10/1/2017 9:39 AM, John R Pierce wrote:
I believe Linux, even RHEL 6, does support NUMA configurations, but
its very questionable if a random typical workload would actually gain
much from it, and it adds significant overhead in keeping track of all
this.
a technical paper examining
f a random typical workload would actually gain much
from it, and it adds significant overhead in keeping track of all this.
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On 9/30/2017 3:09 AM, Stijn De Weirdt wrote:
in case someone else runs into it, it is the opfed-scripts rpm that has
a postinstall and postuninstall script that changes the yum.conf (bad,
mellanox, bad)
i hate the side effects of hacks like that.
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e app, eek). they think I should contain php
in php-fpm, something thing I've not looked at before.
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rnel I get a kernel fault. So going back one level
on teh boot screen solves that - I just need to start the update again. How
is that?
I think I'd try
yum remove kernel-(broken version)
yum update
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, and so when a
student tries to spoof the MAC, they get refused, since the real system
already has the IP address.
that presumes all the reserved systems are on 24/7.
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physically secure so noone unauthorized can plug/unplug
anything into the ethernet.
THEN you'd use iptables to enforce access restrictions on this guest subnet.
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On 9/14/2017 10:54 AM, Larry Martell wrote:
Or, change the path. the java command sets java_home internally based on
where its invoked from.
Where would I do that? This is something running from a browser.
I'm not sure how the browser plugin determines which java to run.
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internally based
on where its invoked from.
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at the same place'. Each of
the few remaining major brands of HD's has their own processes, their
own factories and keeps their technology very closely guarded.
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strategies for this, and
all this is completely opaque to the host OS so you really can't
outguess or manage this process at the OS or disk controller level.
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relation to logical
block numbers or CHS, its not practical to do this. I'd use a fairly
large stripe size, like 1MB, so more data can be sequentially written to
the same device (even tho the device will scramble it all over as it
sees fit).
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undercommit the size of the SSD, so if its a 500GB
SSD, I'd make absolutely sure to never have more than 300-350GB of data
on it. if its part of a stripe set, the only way to ensure this is to
partition it so the raid slice is only 300-350GB.
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On 9/5/2017 12:30 PM, m.r...@5-cent.us wrote:
Why it doesn't like C6, which I am assuming is fully updated, is a
question for their support, if the o/p from the package doesn't tell you.
wild guess, (snicker), its because the C6 box isn't running their junkware.
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BIOS level, and only
works if the system supports WoL in the first place. WoL commands can
typically only be sent over the same local network segment, as they are
layer 2 packets sent to the MAC address of the target.
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.
NUT supports virtually *ALL* UPS's without messing with manufacturer
proprietary software, and its in the EPEL repository, kept up to date.
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cation
program. you running any small market big dollar applicaitons, like
CAD? they are the most frequent user of such services.
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On 8/8/2017 5:06 PM, John R Pierce wrote:
NUT is in EPEL...
oh, NUT supports virtually every UPS made, too.
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, you can just run NUT in standalone mode on
each box.
NUT is in EPEL...
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does the user apache is running as have write access to that folder ?
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this ?
volume controls on analog headphones are purely analog, the computer
doesn't even know its there, its just an attenuator on the analog signal.
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, unless you're going to dedicate a server just to be a
software radio.
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cartridges. on glossy photo paper, it
makes photos that look like they came from a pro photo lab with very
good subtle color rendering and wide gamut range. fairly expensive per
page. Unclear if there's linux support for these (my color
printing all comes from Windows).
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should be live within milliseconds of power being
applied, it doesn't make sense that an OS could boot up before its working.
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replacement, and if you can import a bunch of
numbers, you can graph them 8 ways from sideways.
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graphing systems like cacti and librenms
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on? A slow SD
card or a slow USB drive?
I use Rasbian on my pi's. its pretty hard to beat $35 for the pi3
if cost is important.
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on an SD card.
I usually figure a Pi costs $50 + SD card, as I like to put them in a
case, and they do need a decent 2 amp MicroUSB PSU, you can get a case +
wallwart for $15 on top of the $35 board cost.
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with systemd will need to be
'fixed' to do it the old way, with init.d scripts. repositories like
postgres, EPEL, etc won't work, either, as their C7 packaged daemons are
all configured to use systemd.
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2) move over all services, functionality, etc. one by one.
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of the bottom as liquid aluminium. I'm
pretty certain even MI5/NSA won't get much off congealed Al!
Personally, I'd be concerned with toxic fumes from such an
incinerator. There's all kinda stuff in a drive, rare earth platings,
plastics, and so forth.
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e shredder
and comes out as metal filings.
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e for casual use, and
physical device destruction is the only approved method for anything
actually top secret.
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military level destruction,
where upon the proper method is to run the drives through a grinder so
they are metal filings. the old DoD multipass erasure specification
is long obsolete and was never that great.
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requisites.
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with these chips, then I'd
fully expect Red Hat to backport the key support.
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w/o
needing special versions, AMD is shooting themselves in the foot.
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On 5/11/2017 1:23 PM, John R Pierce wrote:
On 5/11/2017 1:13 PM, Walter H. wrote:
will the next update of CentOS 6 (6.10) have TLSv1.3 support?
A) Ask Red Hat, I see no date for RHEL 6 update 10 yet. update 9
released 6 or 8 weeks ago, so its likely 3-4 months before update 10
releases
ratified yet, its still a draft
C) openssl v.1.1.1 which is supposed to support TLS v1.3(draft) isn't
finished yet, either, its still a -dev release.
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il.
Again, I am using /dev/sdc as an example.
also, dmesg | grep sdc
to see what physical errors were logged. (replacing sdc with whatever
the physical device name is, without any partition number).
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the tabs and not feeding them into the here doc processing.
yes, bash interprets stdin differently than not stdin.
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On 5/5/2017 11:16 AM, Robert Moskowitz wrote:
But bash is ignoring tabs in my here docs.
tab in bash is indeed filename expansion. what are 'my here' docs ?
not familiar with that phrase.
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On 5/2/2017 6:49 PM, H wrote:
'Failed to start ipmi.service: Unit not found'
yum install ipmitool
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without graphics, exercise it via ssh connections,
running as much stuff as you can. download a linux kernel and compile
it with `make clean && make -j 8` over and over, that sort of thing.
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__
,
then merged with Broadcom in 2016 (as I understand it, Avago acquired
Broadcom, but then renamed themselves). Sadly, support for legacy
hardware tends to evaporate in corporate takeovers as its seen as pure
overhead.
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on the wrong side of the typical 5 year
halflife of computer electronics.a single socket low end modern
server would have many times the CPU and IO performance, and would be
able to run many such workloads virtualized.
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On 4/29/2017 10:49 AM, Gregory P. Ennis wrote:
I am remote from the unit today, and do not have a good way to look at
the board today, but the contents of /proc/scsi/scsi is :
what does `lspci` have to say about this raid card ?
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l and your imap demon log failed authentication requests ?
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what iP
address the client request originated from, so logging the IP of the
failed request had best be done at a higher layer.
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On 4/12/2017 7:25 PM, Robert Moskowitz wrote:
I am writing my howto on BIND for Centos7. Mine is running on
Centos7-arm. You can see some of the basics I have done at:
file:///home/rgm/data/htt/httnet/homepage/Centos7-armv7.html
noone else can see your local file system
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rity holes
in it. by running it in a chroot, you limit its ability to be used as a
hacking point of entry.recent versions of bind (basicially, 9 and
newer) are much more secure, so this is less of a concern.
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to Windows or the clean readable
part is followed...
There is a good case to be made for avoiding 'premature optimization' in
software design and development.
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URGERY HUMIDITY ALARM" piercej
[piercej@c7test ~]$ mail
Heirloom Mail version 12.5 7/5/10. Type ? for help.
"/var/spool/mail/piercej": 1 message 1 new
>N 1 John R Pierce Wed Apr 12 13:06 20/888 "Tornado Monday,
03/27/2017 at 20:27:02. The Point BB.OBSURGRH is
erver configured with an email service).
[pierce@new ~]$ mail
Heirloom Mail version 12.4 7/29/08. Type ? for help.
"/var/spool/mail/pierce": 1 message 1 new
>N 1 John R Pierce Wed Apr 12 13:00 20/738 "Tornado Monday,
03/27/2017 at 20:27:02. The Point BB.OBSURGRH is
ailx 12.4 7/29/08
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-Id: <20170412194020.98c3360...@new.xxx.com>
From: pie...@xxx.com (John R Pierce)
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pasted onto the subject.
Where are you running into this issue, how is it manifesting itself,
what software is involved (email client, email server, email list server?)
I see you're using gmail, are you sure this problem isn't specific to gmail?
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On 4/11/2017 2:01 PM, Bruce Ferrell wrote:
Whatever openether.org is, it sounds buggy.
there's no such domain.there's a softether.org, which is a VPN
package, and some kinda github.com/openether which appears to be
Ethereum blockchain based distributed computing related.
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On 4/11/2017 10:17 AM, Nicolas Kovacs wrote:
Le 11/04/2017 à 19:09, John R Pierce a écrit :
do you mean 'authoritative DNS server' ?
Yes.
I've not run bind on c7 yet, but on c6, I just edit /etc/named.conf and
create /var/named/master/$zonename then do a 'reload' of the named
service
On 4/11/2017 10:05 AM, Nicolas Kovacs wrote:
I just installed CentOS 7 on a public server. I'd like to setup BIND as
a primary DNS server for a few domains.
do you mean 'authoritative DNS server' ?
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and
everything.
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not
neccessarily slot specific. its even messier on things like USB
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which one
is eth0 and why?
Say its Intel on eth0 and Marvell on eth1, if I then add another intel,
is the Marvell now eth2 ?
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in my mind.
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On 4/4/2017 7:51 PM, John R Pierce wrote:
On 4/4/2017 6:22 PM, Jerry Geis wrote:
When I do the date +%Z I get the timezone. Which currently is EDT.
I am sending information to another system, that says EDT is not a valid
timezone. I have no way to modify the other system.
My question
time zone ?
For example EST is valid - EDT is not.
Just curious if there is an easy way already present to get a standard time
zone.
Thanks, - I know weird situation the other end not supported EDT.
# cat /etc/timezone
America/Los_Angeles
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factors here.
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On 3/27/2017 10:20 PM, Sorin Srbu wrote:
That reminded me about Smoothwall I used to use a few years back.
Wasn't pfsense related to Smoothwall, maybe even a fork?
smoothwall is linux based.
m0n0wall was a BSD firewall that pfSense forked from back in 2004.
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the runtime libs in /usr/lib64/python3.4
the default C7 python is...
/usr/bin/python
/usr/bin/python2
/usr/bin/python2.7
with libraries in /usr/lib64/python2.7
so no overlap at all.if you want python 3.4, you have to invoke it
explicitly.
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On 3/21/2017 5:02 AM, ken wrote:
Those have worked for me as well. Their range, however, is a third or
half as much as a normal wifi device.
in general, the back of a server, buried under all the cables, and right
up against the metal box is a lousy place for an RF antenna...
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it starting from text ...
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/ everything unplugged, plug back in a
minimum amount of stuff, repeat etc etc etc.
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