is that searching 'diskless' in the vendor knowledge
base only returns 5 entries. Can you believe it?
drbl is a nice package: http://drbl.sourceforge.net/
It can boot diskless clients a couple of different ways besides the
clonezilla mode.
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want to protect.
Do I also need to add a new entry in httpd.conf or load a new apache
module?
Are you sure your Location entry matched the URL path you use to reach
it, not the path to the directory? You do need to restart httpd after
putting this into httpd.conf.
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on centos wiki information ,about vmware kernel
running inside linux virtual machines to change frequency to 100hz.
Is there any workaround for this issue?
Try following the instructions here on the host side:
http://blog.autoedification.com/2006/11/vmware-guest-clock-runs-fast.html
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://httpd.apache.org/docs/2.2/mod/core.html#options
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Kai Schaetzl wrote:
Les Mikesell wrote on Mon, 21 Apr 2008 07:39:24 -0500:
But oddly enough, the documentation does say that the Options directive
is permitted in .htaccess context:
Yes, I was wondering about that myself, I think it is not correct. But
None is not an Option, anyway. He/She
that
are bundled properly into the distribution?
This sounds very much like a distro-centric question to me, even if the
answer turns out to be that Centos doesn't provide that.
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http
and all those other applications that
want a password. Especially when you want to be able to add local
accounts in addition to using a network authentication mechanism.
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http
passwords and password change policy - and probably some
MS-centric people managing it who may not want to help glue on some
open-source parts.
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http
.
Sometimes ISPs limit the DHCP address(es)to known MAC addresses. If
that's the case there may be some timeout or a way to reset it.
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.
I'm confused. I'd expect the above symbol listing to show that sendmail
is in fact using the libwrap library and it should be doing what the
allow/deny files say.
Regardless, the simple way to tell sendmail what you want to permit is
to use the /usr/mail/access file.
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the default is to only use the loopback
interface 127.0.0.1). But you can still control connections completely
in /etc/mail/access.
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, or ssh-fs, then tell it to save the whole disk. The advantage
over dd is that it knows enough about ntfs and most linux file systems
to just save the used blocks and when you restore it will let you pick
from the list of images you've saved.
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Jason Pyeron wrote:
Starting sendmail back up puts me in the high 1's to low 2's
Nope it is behind a firewall, no port 25 access.
mailq is 55k (logwatch)
Does the output of the mailq command look like stuff you expect to be
sending?
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and overhead.
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(perhaps even shared from the same
machine) with the case insensitive option.
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service.
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it will work with anything else.
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it. Just make sure the links from the backend
server are all relative and don't mention its real hostname.
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Stephen Harris wrote:
On Mon, May 05, 2008 at 03:14:35PM -0700, Craig White wrote:
On Mon, 2008-05-05 at 17:08 -0500, Les Mikesell wrote:
Craig White wrote:
VirtualHost www.tobyhouse.com:*
ProxyPass / http://cms.tobyhouse.com
ProxyPassReverse / http://cms.tobyhouse.com
/VirtualHost
to access backend hosts on private networks or
to transparently spread the load across several machines.
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filesystem - if you can have smaller separate partitions, it won't matter.
FreeNAS
Anyone using FreeNAS? What is your experience? How easy is it to add
new drives and keep your data? Upgrading to newer versions?
You might look at openfiler if you want an appliance.
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full of inexpensive external 1TB drives that
you can plug in on demand, using USB, firewire, or sata connections.
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will have to install the
Sun version to run the app(s) so you might want to do that before much
other troubleshooting.
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Rudi Ahlers wrote:
What jvm are you running? Chances are that you will have to install
the Sun version to run the app(s) so you might want to do that before
much other troubleshooting.
Yea, I have upped the RAM to 1024MB, and it's working now.
Is this what you're looking for?
[EMAIL
?
OpenNMS will do most of this automatically if the snmp setup is the same
on all the devices. Http://www.opennms.org. Installing from the yum
repo that includes Sun java is the easiest approach.
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Sergio Belkin wrote:
2008/5/12 Les Mikesell [EMAIL PROTECTED]:
Sergio Belkin wrote:
Hi,
I'm looking for a monitoring system that support snmp v3. I want to
monitorize linux servers and network switches. Currently, I am trying
to use zabbix, but sadly, it lack at present features that I need
that they include the Sun jvm in their
packaging), but it is designed to scale to large networks without a lot
of additional work.
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down,
replying underneath the parts you leave so it lands it the right place
conversation-wise.
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]
|sed -e 's/^Subject:/Subject: \[MailScanner\]/'
What will that look like after someone uses it replies a few times on
the same thread?
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local_dir and the remote copy. If you add a --delete
it will also show anything that exists in the remote but not the local
side (and be especially careful not to omit the -n in this case).
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and follow
the link there that says 'CentOS Archives'. But Google is the place to
search since it has the list contents and a lot of other resources.
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Bart Schaefer wrote:
On Fri, May 16, 2008 at 8:08 AM, Carol Anne Ogdin [EMAIL PROTECTED] wrote:
Les Mikesell questioned, ...who would go there to post any answers? The
answer is the same people who share here...and probably many more who find
this sparse medium harder to navigate.
I, for one
Carol Anne Ogdin wrote:
Les Mikesell questioned, ...who would go there to post any answers? The
answer is the same people who share here...and probably many more who find
this sparse medium harder to navigate. There's a thriving community I
helped create and nurture, which I've described
mailer and the cursor moves down as fast as I can
read so it doesn't slow anything down.
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not sure if it
can be set up with drbd/failover but I've always had pretty good luck
running software RAID on swappable disks that can be moved to a
different chassis in the event of a motherboard or power supply failure.
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with gmail's web interface and find it with
their excellent search facility later.
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Lanny Marcus wrote:
On Sun, 2008-05-18 at 11:49 -0500, Les Mikesell wrote:
snip
If you have a suitable server where you can park your IMAP folders you
can get the best of everything by using fetchmail to grab mail via POP
from gmail and deliver to your local IMAP folders. This gives you
it takes to do
the actually delivery to the mail store.
DRBD works approximately like raid1 mirroring. Unless something breaks
it shouldn't add much latency since the duplicate disk will run at
approximately the same speed as the master.
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of swapping
the disks if you have a motherboard/power supply failure but with
server-class equipment and a good UPS those are pretty rare. You also
need additional backups, since an operator or software error could take
out your online filesystem including the mirrored side.
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why
anyone would consider a non-standard change.
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, for example).
perl can do anything sed can do and has almost no platform or version
related syntax differences - plus it has \s to represent 'whitespace'
and you don't have to bang your head on the wall when you are half done
and realize you have to do something spanning multiple lines.
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/'
That's match one or more whitespace characters followed by one or more
non-whitespace and add .contoso.com after whatever matched.
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managment which throws off the guests:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_UScmd=displayKCexternalId=1591
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into the enterprise kernel that Centos
inherits?
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rid of that SuSE
trash and replacing them with some shiny CentOS 5 machines.)
Are these 64 bit machines?
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popular
Another good choice is MimeDefang (http://www.mimedefang.org/).
There are rpms of it and clamav in the rpmforge repo.
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the ability to
network-boot thin clients and some educational programs) on it and be
done. In any case you might find the information here useful:
http://k12ltsp.org/mediawiki/index.php/Main_Page along with their mail list.
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. If it doesn't, check
the daemon options and any firewalling you might have.
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in that environment.
Just be sure to get the 5EL version which is Centos based - the others
are currently outdated.
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If you have a disk with several partitions set up as members of a raid1
md devices, can you make a dd image of that disk to replace its matching
drive with identical partitions or are there differences between the
mirrored partitions?
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automatically
when booted. They didn't - but I think the other parts worked.
Now, is there a way to change the uuid on a running raid1 set? I'd
prefer that if the split and re-paired disks ever find their way back to
the same machine that they not sync again.
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something like a dual xeon server
with 4 gigs of RAM to act as the server. If you have to go with
standalone workstations, you'll probably want some fast image-based
cloning method to install and maintain them. Clonezilla is pretty good
for that: http://www.clonezilla.org/clonezilla-live/.
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Les
server
generates images, there was a bug that caused the JVM itself to leak
memory under certain circumstances. I've forgotten the details but it
was something like an unreleased file reference per image.
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are French.
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automatically pair at boot.
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with dd copy of sdb)?
No - what was sda was dd'd twice with the dups put in sda and sdb.
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by hand, including things like the number of memory slots and
their contents and the mac/ip addresses of all NICs, active or not.
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the ocs
or glpi databases into the pentaho tools for reporting and analysis
(http://www.pentaho.com) but I don't have any experience with that yet.
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it is possible to change the uuid while
the system is running or if it would have to be done from a CD boot.
I've cloned several machines from one initial setup and if copies of the
disks ever find their way back into one box I'd prefer not to have the
wrong set try to re-sync.
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the same regardless of
what you changed - or just splitting the mirrors and letting each sync
to new partners but then you have to reinstall grub. I prefer
clonezilla for non-raid configurations but most of the machines I care
about are configured with raid1.
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to drastically change OS's between swaps.
You do have to deal with the way NIC detection has changed across Centos
versions, though.
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needs and infrastructure.
Winbind can automatically create users from AD, but you have to join the
domain and I'm not sure what you have to do to coordinate the uid
mapping across machines so NFS shares work.
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to FD?
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connections. Where do you control that?
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the default source address?
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software error is a 'subroutine install redefined
...' when using the configure part to add plugins.
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CPAN
part, then have one of the subcomponents it needs replaced by an older
one that doesn't work in an RPM update - or something like that... If
you pin it down, please let the rest of us know.
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-String
perl-URI
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. The fact that you can get away with this
at all indicates how compatible how backwards-compatible they try to
keep things in perl, but once in a while - ikely in the long lifespan of
Centos - there are some changes that will break things.
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.
Dell usually has all their documentation and updates online. If this
doesn't help you can probably find the full manual.
ftp://ftp.us.dell.com/sysman/readme_160_A00.txt
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to everything they have for that device, which might be flash
updates, all the manuals, and any utilities they provide. I think they
maintain this for everything they have ever sold.
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. If the
filesystem is live, you might make an initial run copying the larger
directories with rsync or cp, then do whatever you can to stop the files
from changing and make another pass with 'rsync --av --delete' which
should go fairly quickly and and fix any remaining differences.
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twiki, RT, MimeDefang, etc. you were forced
to use CPAN until Rpmforge and EPEL added them. (And java stuff is even
worse...).
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files on their workstation. How well it works depends on what they
are doing and the relative CPU and video use compared to file access.
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for the little I do, but I thought that
http://cvs.cinelerra.org/docs.php and http://lives.sourceforge.net were
supposed to be getting better.
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clonezilla and the image. But it doesn't split and you have
to use some other utility to burn the DVD. It would probably work
pretty well to install clonezilla to boot from a large USB disk where
you could store images directly and restore from them.
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:
set line /dev/ttyS0
set carrier off (just in case the device doesn't raise CD)
connect
then it is control-] followed by 'c' to get back to kermit.
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-avn . host:/path/to/check
The -n option says not to actually copy anything, -v says to print the
filenames where there are differences.
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distribution (you don't lose anything, it just adds some
extras and makes the updates yummable). You probably can grab the RPM
directly from the webmin site.
Can I just add a k12ltsp repo and use their webmin?
That should work.
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Ted Miller wrote:
Les Mikesell wrote:
Ted Miller wrote:
This is one of the reasons I usually install k12ltsp instead of the
stock centos distribution (you don't lose anything, it just adds
some extras and makes the updates yummable). You probably can grab
the RPM directly from the webmin
. Is there a simpler way to set up LDAP now?
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it is still best if nothing changes. You could use
some tricks like LVM snapshots, but clonezilla doesn't. The network
mode lets you boot via PXE instead of the CD and automatically NFS
mounts the server so you can save and restore from there, but otherwise
is about the same.
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.
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.
Does this make sense?
Is there a quick way to tell where any particular machine is in the
minor-rev level when the release file just says 5?
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--downloadonly update (can run unattended)
yum upgrade (babysit - but you don't have to wait for the download)
reboot (babysit)
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.el5.centos.2 == 5.0
centos-release-5-1.el5.centos == 5.1
centos-release-5-2.el5.centos == 5.2
Thanks! The new yum seems a bit different - maybe it's the
fastestmirror plugin. Would you recommend doing a 'yum update yum rpm'
before the complete run?
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the copy can be done without a
reboot.
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' to see if the health still
looks OK.
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while doing that.
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it is
painful to have to edit files on every machine to make something happen
that should work by default. I liked the Centos 3.x approach with rrdns
much better since all requests had the same URL even when served by
different sites.
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.)? It might be hard to beat that if all
you want is a file server. Most run Linux of some sort on ARM or PPC
processors and may need to be hacked to add NFS or support 2gig files.
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compared to straight rsync and it needs more CPU, but the disk
savings and ease of use might be worth it.
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only).
And those won't have any pooling.
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updated to Centos 5.2 yet? And if so, did it improve NFS
performance?
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Rudi Ahlers wrote:
David Mackintosh wrote:
On Mon, Jun 30, 2008 at 02:08:33PM -0500, Les Mikesell wrote:
Have you updated to Centos 5.2 yet? And if so, did it improve NFS
performance?
Sorry, these computers are in production now so I can't fiddle with them.
Besides, this would
don't expect to swap.
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