use -i ex. tcpdump -i eth0 port 4957 -nn -vv etc.
man tcpdump for more options.
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2010/2/20 Hadi Motamedi
> Dear All
> I have put tcpdump trace on port 4957 on my CentOS server , as the
> following :
> #tcpdump port 4957
> I want to obtain the payload data to see what
Hello Don,
I would be more than interested about CentOS on EC2.
Regards,
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On Tue, Jun 15, 2010 at 4:29 PM, Don MacAskill wrote:
> I'm happy to help in some way, too. We have barebones CentOS 5 images
> we've been using in EC2 for a long time, and our proce
, my network monitoring system would
simply execute the
script on instance B in order to re-associate the elastic IP.
Does anyone have a better/more elegant solution to this?
Regards,
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they need to add on top of the simple translation from
Fedora to RHEL. I can definitely see why they would be reluctant to do that.
OTOH, yes, it would be so nice if all repos would be 100% compatible
with each other. :-)
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doing something wrong.
There might be some services that you may want to turn off, just do a
"chkconfig --list | grep :on | less" and look through the list -
anything you don't want, just do a "chkconfig service_name off"
he same problem with a clean fresh install of CentOS 5.1, kernel
2.6.18-53.1.4.el5
Installing the lm_sensors-2.10.5-52.el5.x86_64.rpm package from ATrpms
fixed the problem.
Looks like it's a bug in 5.1, either in the kernel or in the lm_sensors
packages.
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ht
vider?
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Windows XP.
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ery 6 months.
Since I upgrade the OS more often than once a year anyway, I chose to
disable auto fsck completely on that kind of machines. No problems so
far, but I wouldn't risk waiting more than 1 year.
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xcluded
packages. I wonder if this might cause any problems.
Of course I could do some tests myself, but I'm asking here for
real-life feedback, in case someone else did the same thing.
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urity" plugin
Setting up repositories
Reading repository metadata in from local files
Excluding Packages in global exclude list
Finished
Limiting package lists to security relevant ones
No packages needed, for security, 128 available
#
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_
Fedora and it seemed to work fine
too, but I don't have much experience with it.
Bottom line: upgrade Firefox.
Maybe this should be put in the FAQ.
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mozilla to .mozilla.orig (to preserve bookmarks and
such in case something goes wrong.
Add /home//firefox to the front end of the $PATH.
That's it.
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can build the latest mysql-5.0 version for centos-5 and put it into
centosplus if there is a real need out there for it.
I, for one, would definitely use the latest stable mysql-5.0 on centos 5
x86_64.
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e there are too many differences between the kernel versions to rely
entirely on "make oldconfig".
Bottom line - it works, but it's not 100% automatic.
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http:
but after comparing several
distros for the PS3, YDL came up as the no-brainer choice.
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with mythfrontend, I don't need
any compatibility issues. It must be a stable, reputable software.
Which desktop environment would you recommend based on the requirements?
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C
CentOS 5 but so far no luck. The
best site so far is this:
http://djflux.net/rpms/fedora/6/
It's Fedora 6 so it may recompile on CentOS 5.
Anyone else using recent Asterisk versions on CentOS 5 64 bit? Where did
you get your packages from?
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on v5?
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Florin Andrei wrote:
Anybody implemented a working proxy ARP with CentOS 5?
I am trying to implement DNAT on a dual-homed firewall (servers behind
firewall are on private IPs) and that requires proxy ARP. I've tried
several different methods but nothing seems to work.
I figured it o
ernel, and let the kernel deal with the differences? I.e. have
the old configuration as some sort of baseline that can be further tweaked.
Or some other strategy?
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o do 1:1 NAT without conntrack.
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Florin Andrei wrote:
Let's say I want to use a much newer kernel - even one from the future,
such as the upcoming 2.6.24. :-) What would y'all smart folks do in this
case, in order to avoid any possible nasty consequences?
Would you import the config file from the original CentOS5 k
Florin Andrei wrote:
Let's say I want to use a much newer kernel - even one from the future,
such as the upcoming 2.6.24. :-) What would y'all smart folks do in this
case, in order to avoid any possible nasty consequences?
Would you import the config file from the original CentOS5 k
Florin Andrei wrote:
Apply this patch to the scripts/package/mkspec file (careful, at least
one line is wrapped by the Gmane mail archive, so unwrap manually):
http://thread.gmane.org/gmane.linux.kernel/593172
Or just use the patch file attached to this message if the mail archive
doesn
Florin Andrei wrote:
Optionally, do a "make menuconfig" and tweak the kernel options even more.
You may especially want to edit the CONFIG_LOCALVERSION field to reflect
the fact that you're building a custom kernel. I prefer to make that
field "COMPANYNAME.x" wh
tOS 5, probably with a MySQL backend (but I'm not
sure yet, SQLite might be another option).
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some directory name,
unmount /opt, re-mount the FAT32 partition under the new directory, and
then leave /opt alone.
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process still running for postfix. After killing this, I am
able to run `service postfix start`.
Anything in audit.log ?
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Following Fabian's blog post re: RPMForge being rebuilt for EL5, I've a
question:
Are there any compatibility problems between RPMForge and EPEL? In other
words, if I enabled EPEL previously, will I be able to enable RPMForge
as well without running into trouble?
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issues.
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id that on CentOS 5.
So, I need to tell SELinux "hey, this stuff under
/home/foobar/spool/cyrus is just like /var/spool/cyrus, don't relabel it
to something else". How do I achieve that?
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you, what to stay away from, etc.
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so
they were a symptom, not the cause.
I'm still kind of hoping it's a software issue, but chances are slim.
OTOH, I can't imagine any hardware problem that would exhibit these
symptoms.
Any idea what to test?
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On 04/13/2011 01:55 PM, Benjamin Franz wrote:
>
> 1) Are you untarring from *and* to the SAN volume or is the source on
> the local volume?
Source on SAN, destination on SAN. Still slow.
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In any case, the explanation would have to account for the fact that
network transfers, *and* local disk activity, are both slow.
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all that stuff from me, do the updates or whatever in the
background, instead of blocking the UI until it's done. Ironically, it
blocked when I was done with this paragraph and I hit Enter. Sticking it
to the man one last time, I guess.
Any suggestions? Thanks.
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ty often, no relation to sending emails.
The IMAP and SMTP servers are defined by IP address, not hostname. But
even if that was the case, a software that blocks the UI completely
while waiting for something in the background? Sounds like 1999 all over
again.
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ep messages for this
> account on this computer"
It's unchecked already.
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whatnot).
Maybe that's what Thunderbird does - re-scans the IMAP folders, but in a more
sneaky way, and it's dumb enough to put a Big Lock on the whole interface. Hmm.
I opened a bug report with them:
https://bugzilla.mozilla.org/show_bug.cgi?id=650400
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On Mon, 18 Apr 2011 13:46:38 -0500
Les Mikesell wrote:
> Have you tried upgrading to a current release?
I'm running the same version like you: Gecko/20110303 Thunderbird/3.1.9 (except
it's on Linux)
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http://fl
le WiFi access point is much better. The Linux server
becomes the router.
The third network card goes into a switch that connects all the local LAN.
The Linux box does NAT for all the networks behind it. Also runs a local
DNS cache and stuff like that.
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ht
Ryan Pugatch wrote:
>
> I recognize that in most cases du and df are not going to report the
> same but I am concerned about having a 12GB disparity. Does anyone have
> any thoughts about this or reason as to why there is a big difference?
Sparse files?
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Ryan Pugatch wrote:
>
> Oh, and no sparse files either :)
Last time I saw this issue, no sparse files, nothing legit, it was a
corrupted FS. :(
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o a "permit all" firewall:
iptables [-t nat] -F; iptables [-t nat] -X
or
service iptables stop
See if the iptables service is enabled:
chkconfig --list iptables
Tip: if the FORWARD chain doesn't seem to work, check
net.ipv4.ip_forward in /
d you have
a system running 24/7 somewhere on the network. Most distributions
provide some sort of plug-and-play recursive resolver, you just need to
install it and turn it on.
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luck with proprietary drivers? Any problems those drivers may cause
with bonding?
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nate wrote:
> Florin Andrei wrote:
>
>> Any luck with proprietary drivers? Any problems those drivers may cause
>> with bonding?
>
> I don't think there are proprietary drivers for broadcom NICs,
> about 5 years ago there was proprietary fault tolerance drivers
&g
Meenoo Shivdasani wrote:
>
> One option would be to comment out the make_resolv_conf() function in
> /sbin/dhclient-script.
That's the last-ditch solution. Never use it, unless everything else fails.
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g/network-scripts/ifcfg-*
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Clint Dilks wrote:
>
> Try adding PEERDNS=no to /etc/sysconfig/network :)
aw, man :)
This is not fixing the leaking faucet. It's hammering the water pipe
shut instead.
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/etc | grep -v selinux | grep -v /ifup-eth: \
| grep -v /ifdown-eth:
# to see if it's called from somewhere else than the regular places
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ow the docs. What I was saying is - it will not help finding
the cause, which is what the OP requested. It will just make the problem
go away.
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but anyway all that junk serves no purpose there (well, arguably you
could put back USERCTL and stuff like that, if you really need it).
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es the
modification of resolv.conf, not how to cover up the issue. It's easy to
hide the problem, either do what you suggest, or edit away
make_resolv_conf(). But the underlying cause will remain, and may
resurface if these changes are undone.
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> another few weeks
http://twitter.com/CentOS/status/4831596086
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to do it that way. :-)
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Hi,
Take a look at the chroot_list_enable option. It enables you to specify
per-user config.
http://vsftpd.beasts.org/vsftpd_conf.html
Cheers!
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On Fri, Nov 13, 2009 at 2:16 PM, Victor Subervi wrote:
> Hi;
> I've learned how to add a user and change the root dir of vsftp
for network-based dumps (the remote end may be
unavailable due to a number of reasons).
The local storage is a couple SATA drives with hardware-based mirror
RAID. The chassis is a Dell PowerEdge.
Also, what it the recommended size for a dedicated raw partition for kdump?
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Hi,
I'm trying to setup read-only SFTP repo. The directory that I'm planning to
make available via sftp needs to have only read-only access. My issue is
that this specific directory is already available for read & write access
but under different credentials. When I try to login via my read-only
a
ising and unjustified.
FWIW, I was at SGI when XFS for Linux was released, and I probably was
among its first users. It was great back then, but now it's over-rated.
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So, my favorite RPM repository (EPEL) only has the ancient nagios-2.12
or so.
What's the repo you use for Nagios 3?
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On 12/9/2009 3:51 PM, Florin Andrei wrote:
> So, my favorite RPM repository (EPEL) only has the ancient nagios-2.12
> or so.
>
> What's the repo you use for Nagios 3?
I asked too soon. "rpmbuild -tb" works pretty well on the source tarball. :)
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primarily on the external interface.
I can't explain this better in a short paragraph, but I'm sure there's
plenty of people who've been there and arrived to the same conclusion:
Anything remote is unreliable, so don't depen
. And then you can do 1:1 NAT
with the ip utility. Because NAT is not activated in netfilter,
ip_conntrack is not required.
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re very large (especially delete is very fast).
No other filesystem will be as reliable as Ext3 if the machine suddenly
loses power, but if you have a battery backup or something like that,
you should be fine with non-Ext3 filesystems.
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kind of scenario you're
describing. No wonder it performs really well in that sort of situation.
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Jim Perrin wrote:
Personal experiences may vary.
Yup. Do your own tests, involving your particular situation, then draw
conclusions. The average may just not apply very well in your case.
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Ross S. W. Walker wrote:
jfs is
supposedly excellent if you have a lot of small files like a
mail/news server
Hm, last time I tested ReiseFS turned out to be the best FS for that
situation. But it's been a while, perhaps things have changed a bit.
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ke it harder to keep up with the updates):
http://download.fedora.redhat.com/pub/epel/
Wine is making a lot of progress recently, so it's probably worth
tracking the recent versions.
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lorin Andrei
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Anybody knows when CentOS 5.2 will be made available?
http://www.linux.com/feature/135980
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Matt Hyclak wrote:
For crying out loud, upstream has only released 5.2 less
than 24 hours ago.
I was just curious, I was not "demanding it right now" or anything like
that.
Sorry if my inquiry seemed inconsiderate.
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me problem even if I try to just update a specific
package.
Google got me this link, but no obvious resolution:
http://www.centos.org/modules/newbb/viewtopic.php?forum=8&topic_id=5588&viewmode=flat
Any pointers appreciated.
Backup, format, install, restore. ;-)
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min 36M/s
original61min 28M/s
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re's only one
way to find out. ;-)
I'd be interested in a way of telling from within the OS whether or not
MWI is enabled...
That would be nice.
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Florin Andrei wrote:
Anyway, I did a test with the 2.6.18-93.el5.bz444759 kernel and there's
no difference: 65 minutes, 27 MB/s. Looks like it doesn't matter which
kernel I use, at least for this simple test with dd.
I wonder if a test closer to real life, such as reading/wri
(duh) and only put on XFS the stuff that needs
good performance, but can be rebuilt from the master data in case
something ugly happens. Like pretty much anything in life, it's a trade-off.
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zilla Weave comes out with a
version that's similar enough with Google Sync in terms of features.
Hopefully that will happen pretty soon.
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y driver provided by 3ware.
I'm testing now the 16 port version for newer servers, no problems there
either (but not much usage yet, of course).
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hit the "Y" key.
I won't do that yet, I need to be physically there to babysit it, there
are way too many hacks and moving parts on that machine.
But yeah, in a nutshell, just do "yum update" and it will take you to
the next version - 5
Vista.
(*) - not an exact comparison, YMMV, if this knowledge burns down your
house and kills your dog, I am not responsible.
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John R Pierce wrote:
/boot shouldn't be mirrored, as the BIOS won't know how to boot it.
Wait. I thought mirror RAID is the same on-disk format like a plain
partition, so therefore a mirrored /boot will always boot. At least, it
always did for me.
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older hardware.
You can always install any FF version you want in /home/${USER}/firefox
and put that directory at the beginning of $PATH in .bash_profile
Voila, instant FF "upgrade" and you don't even have to remove the
original FF package.
t I'd like to hear from someone
with first-hand experience with one of them.
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ime on all systems unless you _really_ need to do
disk forensics. You will see a performance improvement in almost every
scenario.
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Craig White wrote:
don't use a journalled filesystem (ext3)
That's pretty extreme, it may not actually solve the original problem,
and in case of a crash you may have "fun" with repairing inconsistent
filesystems.
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ht
Maybe KDE enables some graphic effects of its own, I don't
know.
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other cases. Use common sense.
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wards them?
To become package maintainers - those lacking common sense need not apply.
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one of the other methods already recommended in
this thread.
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Bowie Bailey wrote:
I know it's "security through obscurity"
That's not necessarily a bad thing.
It is bad if it's the _only_ protection.
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Anybody using these? Pros? Cons? Drivers for CentOS 5? Config /
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n other FS when you're dealing with
large files, such as HD authoring and stuff like that. Even then, if you
want to be sure, it's probably best to do some benchmarks.
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CentOS?
Thanks.
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Perhaps openssh is only a SOCKS server for TCP
protocols? OpenVPN normally uses UDP.
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On 01/09/2012 04:51 PM, John R Pierce wrote:
> On 01/09/12 4:34 PM, Florin Andrei wrote:
>> OpenVPN normally uses UDP.
>
> it does? I thought OpenVPN used ssl/tls as the transport, which is most
> decidedly TCP. I'll admit I haven't used it in quite a long time
op
xit
point, and I don't control the routers in between. I must use a proxy.
Fortunately, OpenVPN seems to work well with dante-server. Too bad
dante-server is not in EPEL, but RPM packages are available online.
--
Florin Andrei
http://florin.myip.org/
it to find printers too.
Wait a sec, I have that setup (just mediatomb instead of ps3mediaserver)
and there's no avahi on my network. Yet the PS3 is perfectly capable of
discovering and using the DLNA server.
It might be useful for *something* but it doesn't appear to be requi
rashes.
I know there are two software implementations that would enable me
to do this, kexec and 'crash' , redhat's own implementation that allows
you to pust the dump via network to a remote machine.
What would be the best thing to do at this po
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