Re: [CentOS] kernel-2.6.18-53.1.21.el5 centosplus?

[Alfred von Campe]

On May 28, 2008, at 14:08, Johnny Hughes wrote:

We are currently using the builders to build centos-5.2 ... I can  
try to  get the that kernel in, but we should very soon thereafter  
have the 5.2 one, so it might be better for you just to wait.


Does the 5.2 kernel include the NFS patch (RH bug 32 I think)?   
The only reason I am using the centosplus kernel is because of the  
NFS performance issue.  Oh, and I also like to have framebuffer  
support in the kernel which was missing from the previous centosplus  
kernel.  So if the 5.2 kernel includes the NFS patch, and has FB  
support, that would make my day!


Alfred :-)

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Re: [CentOS] centos 5 2.6.18-53.1.21.el5 kernel and ipsec

[Joe Pruett]

On Thu, 29 May 2008, Ned Slider wrote:


See here:

http://bugs.centos.org/view.php?id=2853


thanks. i had looked in the upstream bugzilla and not found anything 
obvious, but didn't think to look at the centos bug database.  i'll 
remember that for next time.

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[CentOS] GFS

[Mag Gam]

Hello:

I am planning to implement GFS for my university as a summer project. I have
10 servers each with SAN disks attached. I will be reading and writing many
files for professor's research projects. Each file can be anywhere from 1k
to 120GB (fluid dynamic research images). The 10 servers will be using NIC
bonding (1GB/network). So, would GFS be ideal for this? I have been reading
a lot about it and it seems like a perfect solution.

Any thoughts?

TIA
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RE: [CentOS] /etc/sysctl.conf edit not permanent

[Barry Brimer]

Hi,
I added the following to /etc/sysctl.conf:
net.ipv4.ip_forward = 1
sysctl -p does not show any errors.

So after a #service network restart, I see this:
Shutting down interface eth0:  [  OK  ]
Shutting down loopback interface:  [  OK  ]
Disabling IPv4 packet forwarding:  net.ipv4.ip_forward = 0
[  OK  ]
Bringing up loopback interface:  [  OK  ]
Bringing up interface eth0:  [  OK  ]
Bringing up interface eth1:
Determining IP information for eth1... done.

But a sysctl -p shows the right info after? Is this behavior normal?


I have seen the same thing.  I think what is happening is that when you 
restart networking, it disables packet forwarding.  When you start it, it 
will re-enable.  After you start the network type:

"/sbin/sysctl net.ipv4.ip_forward"

I expect that you will see "net.ipv4.ip_forward = 1"

Please confirm.

Barry
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Re: [CentOS] /etc/sysctl.conf edit not permanent

[John R Pierce]

Joseph L. Casale wrote:

What exactly did you add to /etc/sysctl.conf?

Do you have any errors when you run "sysctl -p" on the command line as root?

Filipe



Hi,
I added the following to /etc/sysctl.conf:
net.ipv4.ip_forward = 1
sysctl -p does not show any errors.

So after a #service network restart, I see this:
Shutting down interface eth0:  [  OK  ]
Shutting down loopback interface:  [  OK  ]
Disabling IPv4 packet forwarding:  net.ipv4.ip_forward = 0
[  OK  ]
Bringing up loopback interface:  [  OK  ]
Bringing up interface eth0:  [  OK  ]
Bringing up interface eth1:
Determining IP information for eth1... done.

But a sysctl -p shows the right info after? Is this behavior normal?
  


sysctl -p  reads the /etc/sysctl.conf file and sets whatever options are 
in there, so if you run that, its just putting back what you've said in 
sysctl.conf
It looks like ip_forward is being reset by /etc/init.d/network when you 
pass argument STOP or RESTART (with the network STOPPED, how can there 
be forwarding?)
it does look like /etc/init.d/network START reruns any sysctl.conf 
settings, so its probably turning it back on when the network is 
(re)started if you're setting it in there.




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Re: [CentOS] centos 5.1 i386 on a 1GIG flash

[William L. Maltby]

On Wed, 2008-05-28 at 16:42 -0400, Jerry Geis wrote:
> 

> however, I am getting blocked at the install page about not enough room 
> to install.
> All I have selected is the base package. nothing else.
> 
> Is there a way to install "less thank" base... I tried to option off 
> items in the base package
> but the last message I got was about 1044 was my packages size...

IIRC, there are several threads about this on the site. I *think* it was
that you need to also unselect individual packages to get a truly
minimal install. Check out the archives.

> 
> Anyone have suggestions or have tried to install on a small device. THanks,
> 
> Jerry
> 

HTH
-- 
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Re: [CentOS] FireFox

[William L. Maltby]

On Wed, 2008-05-28 at 12:53 +0100, Karanbir Singh wrote:
> Robert Spangler wrote:
> >

> I have a Firefox3 beta3 rpm for CentOS-4 that works in parallel with the 
> distro firefox. once Firefox3 is released upstream I will get that built 
> for CentOS-4 and put that in the CentOS Plus repo.

JIC you might have an interest (saves work later, more stable than beta,
whatever), they have released an rc1 that I've been running the last
week or so.

> 
> - KB
> 

HTH
-- 
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RE: [CentOS] /etc/sysctl.conf edit not permanent

[Joseph L. Casale]

>What exactly did you add to /etc/sysctl.conf?
>
>Do you have any errors when you run "sysctl -p" on the command line as root?
>
>Filipe

Hi,
I added the following to /etc/sysctl.conf:
net.ipv4.ip_forward = 1
sysctl -p does not show any errors.

So after a #service network restart, I see this:
Shutting down interface eth0:  [  OK  ]
Shutting down loopback interface:  [  OK  ]
Disabling IPv4 packet forwarding:  net.ipv4.ip_forward = 0
[  OK  ]
Bringing up loopback interface:  [  OK  ]
Bringing up interface eth0:  [  OK  ]
Bringing up interface eth1:
Determining IP information for eth1... done.

But a sysctl -p shows the right info after? Is this behavior normal?

Thanks!
jlc
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Re: [CentOS] centos 5 2.6.18-53.1.21.el5 kernel and ipsec

[Ned Slider]

Joe Pruett wrote:
i had previously been having issues with automount being slow with this 
new kernel and i tracked it down to dns delays which were being caused 
by ipsec not working.  i have spent a few hours poking around and ipsec 
seems quite broken with this new kernel.  esp packets go in and out just 
fine, but when i look at ip xfrm stats on the machine with the new 
kernel, i see that for input packets, the ah layer is being processed 
just fine, but the esp layer is showing 0 bytes/packets and no errors.  
i can't find any errors or other indications of what is going on.


is anyone else running a standard ipsec tunnel (using the standard ifcfg 
method for creating the tunnel) under this new kernel?  i know that a 
new 5.2 kernel should be coming soon, but i worry that whatever broke 
this version may happen there as well.


See here:

http://bugs.centos.org/view.php?id=2853

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[CentOS] centos 5 2.6.18-53.1.21.el5 kernel and ipsec

[Joe Pruett]

i had previously been having issues with automount being slow with this 
new kernel and i tracked it down to dns delays which were being caused by 
ipsec not working.  i have spent a few hours poking around and ipsec seems 
quite broken with this new kernel.  esp packets go in and out just fine, 
but when i look at ip xfrm stats on the machine with the new kernel, i see 
that for input packets, the ah layer is being processed just fine, but the 
esp layer is showing 0 bytes/packets and no errors.  i can't find any 
errors or other indications of what is going on.


is anyone else running a standard ipsec tunnel (using the standard ifcfg 
method for creating the tunnel) under this new kernel?  i know that a new 
5.2 kernel should be coming soon, but i worry that whatever broke this 
version may happen there as well.

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Re: [CentOS] Adding new drivers to the pxeboot initrd/kernel

[Clint Dilks]

Drew Weaver wrote:

Drew Weaver wrote:
  

  Does anyone have a howto or documentation on how to add new drivers to
the pxeboot initrd/kernel? It appears that although some newer dells
(t300) have Broadcom NetXtreme IIs in them, 4.6 won't recognize them for
some reason (possibly because they're dual port?)



You can use a driver disk hosted on either the install media or a usb
key / floppy disk / cd-r
---

Unfortunately we do our installs via PXE remotely, so it would be difficult, 
there is no way to modify the pxeboot initrd?

-Drew
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Hi this is definitely possible, we have had to do similar.

What I would suggest is that you install one system using a driver disk 
or similar so that you have a working system to use to help identify 
changes needed to your initrd.


There is a lot of good documentation about modifying initrd's its just 
that some of it needs to be adjusted slightly for newer Red Hat based 
systems.


Try
http://sial.org/howto/linux/initrd/
http://wiki.openvz.org/Modifying_initrd_image
http://forums12.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1212015469230+28353475&threadId=1158742 



And remember just because the initrd used for PXE Booting is modified 
doesn't mean that the initd on the installed systems is modified as 
well.  I hope this helps


Good Luck :)
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Re: [CentOS] centos 5.1 i386 on a 1GIG flash

[John R Pierce]

Jerry Geis wrote:

I have found this link http://owlriver.com/tips/tiny-centos
for installing centos on a minimal system. I am looking at putting
centos on a 1 GIG flash drive. The above page talks about removing 
packages

after install to attain the small size.

however, I am getting blocked at the install page about not enough 
room to install.

All I have selected is the base package. nothing else.

Is there a way to install "less thank" base... I tried to option off 
items in the base package

but the last message I got was about 1044 was my packages size...

Anyone have suggestions or have tried to install on a small device. 
THanks,


uClinux, busybox, and use a combination of flashfs (r/o, highly 
compressed) and jffs2 (r/w) and you'll have most of that 1GB flash 
available for applications  (I've run a system based on this mix on 
hardware with 16MB ram and 8MB flash and had freespace).   yes, you'll 
be rolling your own going this way.



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Re: [CentOS] centos 5.1 i386 on a 1GIG flash

[Ned Slider]

Jerry Geis wrote:

I have found this link http://owlriver.com/tips/tiny-centos
for installing centos on a minimal system. I am looking at putting
centos on a 1 GIG flash drive. The above page talks about removing packages
after install to attain the small size.

however, I am getting blocked at the install page about not enough room 
to install.

All I have selected is the base package. nothing else.



You can actually deselect "base" too although I don't know if will make 
it small enough to install.


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Re: [CentOS] PPPoE client help

[Alex White]

Robert Moskowitz wrote:

Please point me in the right direction

My ISP is giving me an IPv6 prefix, but to get that I have to:

The current Speedstream ADSL router will be configured as a bridge.  I 
will have to set up a Linux (read Centos, I hope) router that will 
connect ethernet to the Speedstream but run PPPoE to his network and get 
both the IPv4 and IPv6 route delegations.


There is no easy way that I know of to test this ahead of time.  I 
basically have to get the box configed, have my ISP switch the 
Speedstream to briding mode, and GO!  So I need to do some reading


This link may help you, I'm not sure, there is no ipv6 coming from 
my ISP yet. So I've not had the experience of messing with it yet.


http://www.olympus-zone.net/page_1075_en_Blue.html


Also, I believe there is some information concerning rp-ppoe and 
ipv6 mentioned in the man page, one of the options is listed in the 
pppd man page is pppd=ipv6 or ipv4. Would this be what you're 
looking for?


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[CentOS] centos 5.1 i386 on a 1GIG flash

[Jerry Geis]

I have found this link http://owlriver.com/tips/tiny-centos
for installing centos on a minimal system. I am looking at putting
centos on a 1 GIG flash drive. The above page talks about removing packages
after install to attain the small size.

however, I am getting blocked at the install page about not enough room 
to install.

All I have selected is the base package. nothing else.

Is there a way to install "less thank" base... I tried to option off 
items in the base package

but the last message I got was about 1044 was my packages size...

Anyone have suggestions or have tried to install on a small device. THanks,

Jerry
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[CentOS] PPPoE client help

[Robert Moskowitz]

Please point me in the right direction

My ISP is giving me an IPv6 prefix, but to get that I have to:

The current Speedstream ADSL router will be configured as a bridge.  I 
will have to set up a Linux (read Centos, I hope) router that will 
connect ethernet to the Speedstream but run PPPoE to his network and get 
both the IPv4 and IPv6 route delegations.


There is no easy way that I know of to test this ahead of time.  I 
basically have to get the box configed, have my ISP switch the 
Speedstream to briding mode, and GO!  So I need to do some reading



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Re: [CentOS] raw device change back to root after reboot

[Jeff]

2008/5/28 mcclnx mcc <[EMAIL PROTECTED]>:
> We are setup new DELL 6800 server fro Informix database.  We create "raw"
> partitions and change "raw" partitions owner to "informix:informix".  After
> reboot owner change back to "root".
>
> we don't have problem on CENTOS 3.X, but this problem happen on CENTOS 4.6.
> I double check "SELINUX" is "disable".
>
> does anyone know why it work on 3.X, but NOT on 4.6?
>
> do I need modify /etc/udev/permissions.d/50-udev.permissions?
>
> if "yes", anyone have sample?

I create a new file /etc/udev/permissions.d/40-informix.permissions
with the following contents:

sdb5:informix:informix:0660
sdb6:informix:informix:0660
sdb7:informix:informix:0660

Of course, your drive devices will vary. Interesting to see someone
else running Informix on CentOS.

-- 
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[CentOS] raw device change back to root after reboot

[mcclnx mcc]

We are setup new DELL 6800 server fro Informix database.  We create "raw" 
partitions and change "raw" partitions owner to "informix:informix".  After 
reboot owner change back to "root".

we don't have problem on CENTOS 3.X, but this problem happen on CENTOS 4.6.  I 
double check "SELINUX" is "disable".

does anyone know why it work on 3.X, but NOT on 4.6?

do I need modify /etc/udev/permissions.d/50-udev.permissions?  

if "yes", anyone have sample?

Thanks.

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[CentOS] Question about delay pools

[Sergio Belkin]

Hi,
I configured delay pools on squid. I get the following from squidclient:

Delay pools configured: 2

Pool: 1
Class: 1

Aggregate:
Disabled.

Pool: 2
Class: 1

Aggregate:
Max: 187500
Restore: 187500
Current: -6

Memory Used: 624 bytes

End of Output

What does mean Current with a  negative value?

Thanks in advance

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Re: [CentOS] kernel-2.6.18-53.1.21.el5 centosplus?

[Matthew Kent]

On Wed, 2008-05-28 at 13:08 -0500, Johnny Hughes wrote:
> Matthew Kent wrote:
> > Been a week, any eta? :)
> > 
> > Thanks!
> 
> We are currently using the builders to build centos-5.2 ... I can try to 
>   get the that kernel in, but we should very soon thereafter have the 
> 5.2 one, so it might be better for you just to wait.
> 

Ah of course, sounds great. 

Happy to wait for 5.2.
-- 
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Re: [CentOS] kernel-2.6.18-53.1.21.el5 centosplus?

[Johnny Hughes]

Matthew Kent wrote:

Been a week, any eta? :)

Thanks!


We are currently using the builders to build centos-5.2 ... I can try to 
 get the that kernel in, but we should very soon thereafter have the 
5.2 one, so it might be better for you just to wait.




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Re: [CentOS] /etc/sysctl.conf edit not permanent

[Filipe Brandenburger]

On Wed, May 28, 2008 at 10:39 AM, Joseph L. Casale
<[EMAIL PROTECTED]> wrote:
> I have edited ip forwarding in /etc/sysctl.conf yet when I issue a
> #service network restart I see it get set back to 0.
> Why is that?

What exactly did you add to /etc/sysctl.conf?

Do you have any errors when you run "sysctl -p" on the command line as root?

Filipe
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RE: [CentOS] Bind Help

[Joseph L. Casale]

>$INCLUDE common.inc
>
>Please refer to bind documentation for more information on this statement.
>
>HTH,
>Filipe

Got it, so both views reference this one file.
Thanks!
jlc
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Re: [CentOS] Problem accessing to Windows Terminal Server in load balancing.

[Lorenzo Quatrini]

ArcosCom Linux User ha scritto:

2 questions:
   a) Must I put the same IP with 3 "virtual macs" under the same interface?
   b) Must the ARP entry be changed in the bridges? In the computers?



Well, I don't remember for sure if I did something on the Cluster side (maybe I 
choose "Multicast" on cluster properties) but I only have one (virtual) mac 
address for the (virtual) ip address.


The static ARP entry is only on my router (which is routing and not bridging); 
maybe if you use bridging you have to distribute the static mapping on all the host


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Re: [CentOS] Adding new drivers to the pxeboot initrd/kernel

[Karanbir Singh]

Drew Weaver wrote:

Unfortunately we do our installs via PXE remotely, so it would be difficult, 
there is no way to modify the pxeboot initrd?



you can add newer drivers into the pxe images as well, I am not sure 
what sort of docs exist for it though.


- KB
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Re: [CentOS] Problem accessing to Windows Terminal Server in load balancing.

[ArcosCom Linux User]

2 questions:
   a) Must I put the same IP with 3 "virtual macs" under the same interface?
   b) Must the ARP entry be changed in the bridges? In the computers?

Regards

El Mie, 28 de Mayo de 2008, 18:12, Lorenzo Quatrini escribió:
> ArcosCom Linux User ha scritto:
>
>>
>> I observed that all TSn IP's has their ARP entry in the ARP table, but
>> the
>> IP for load balancing not.
>>
>> How can I solve this problem at the bridge level? I think that there is
>> something that the bridges are filtering and perhaps is because the TS
>> load balancing software uses various "virtual macs" for the load
>> balancing
>> IP.
>>
>
> I had a similar issue with a Cisco router; the solution was to add an
> entry on
> the arp table for the IP for load balancing and the "virtual" ethernet
> address
> of the cluster. (You can find them on the properties of the cluster)
>
> I guess you could use /etc/ether to make the mapping persistent.
>
> Regards
>
> Lorenzo Quatrini
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[CentOS] kernel-2.6.18-53.1.21.el5 centosplus?

[Matthew Kent]

Been a week, any eta? :)

Thanks!
-- 
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Re: [CentOS] How to move my MBR

[Scott Moseman]

I was wanting to upgrade (reinstall) but never had a good excuse.  I
was going to spend more time fiddling around with the MBR and Grub
settings than I was going to kill doing a OS reinstall.  All of my
data was on a separate /home disk, so I just slapped on the new OS,
configured a couple services and the box was back online in no time.

Thanks for your help,
Scott



On Mon, May 26, 2008 at 2:46 AM, Theo Band <[EMAIL PROTECTED]> wrote:
>
> Anyway you are now happy with Centos5?
>
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Re: [CentOS] IPChains

[Scott Nelson]

On May 28, 2008, at 11:26 AM, Chris Heiner wrote:


Version 4.5, there all fairly new.


In 4.5, ipchains is no longer used; iptables is used instead.

The changes you make (using the iptables command) are made in the  
kernel's memory.  To save the changes to /etc/sysconfig/iptables, use  
the "service iptables save" command.  When the system is booted (and  
the iptables service is enabled) it will read that file back into the  
kernel's memory.

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RE: [CentOS] IPChains

[Chris Heiner]

Version 4.5, there all fairly new.

Thanks

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Jim Perrin
Sent: Wednesday, May 28, 2008 8:19 AM
To: CentOS mailing list
Subject: Re: [CentOS] IPChains

On Wed, May 28, 2008 at 11:13 AM, Chris Heiner
<[EMAIL PROTECTED]> wrote:
> How can I tell if its running?


IPChains is pretty oldschool. The only version of centos which might
still use ipchains would be 2.1.


What version of centos are you using?

You can probably get the information you want from 'service iptables
status'.



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Re: [CentOS] Problem accessing to Windows Terminal Server in load balancing.

[Lorenzo Quatrini]

ArcosCom Linux User ha scritto:



I observed that all TSn IP's has their ARP entry in the ARP table, but the
IP for load balancing not.

How can I solve this problem at the bridge level? I think that there is
something that the bridges are filtering and perhaps is because the TS
load balancing software uses various "virtual macs" for the load balancing
IP.



I had a similar issue with a Cisco router; the solution was to add an entry on 
the arp table for the IP for load balancing and the "virtual" ethernet address 
of the cluster. (You can find them on the properties of the cluster)


I guess you could use /etc/ether to make the mapping persistent.

Regards

Lorenzo Quatrini
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RE: [CentOS] Adding new drivers to the pxeboot initrd/kernel

[Drew Weaver]

Drew Weaver wrote:
>   Does anyone have a howto or documentation on how to add new drivers to
> the pxeboot initrd/kernel? It appears that although some newer dells
> (t300) have Broadcom NetXtreme IIs in them, 4.6 won't recognize them for
> some reason (possibly because they're dual port?)

You can use a driver disk hosted on either the install media or a usb
key / floppy disk / cd-r
---

Unfortunately we do our installs via PXE remotely, so it would be difficult, 
there is no way to modify the pxeboot initrd?

-Drew
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Re: [CentOS] Re: smp falls back to up mode on quad core

[Julian Echave]

Indeed, it does default to on. I left it explicitly ncpi=on as a reminder
that it MUST be on for the four cpus to be seen.

On Wed, May 28, 2008 at 12:33 PM, Scott Silva <[EMAIL PROTECTED]> wrote:

> on 5-28-2008 8:09 AM Julian Echave spake the following:
>
>> Solved it!
>> After quite a lot of messing around...
>> It turns out i was booting with the acpi=off option, but for the BIOS to
>> see the 4 processors acpi has to be on.
>> The problem was that with acpi=on, boot hangs, unless pci=nommconf is
>> added to the boot options.
>>
>> To summarize,
>>
>> I now boot using the options
>>
>> acpi = on pci=nommconf
>>
>> Thanks.
>>
>> Julian.
>>
> Doesn't acpi default to on? So you "should" be able to just have
> pci=nommconf.
>
>
> --
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> You hope everybody uses it, and
> you notice quickly if they don't
>
>
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Re: [CentOS] Adding new drivers to the pxeboot initrd/kernel

[Karanbir Singh]

Drew Weaver wrote:

  Does anyone have a howto or documentation on how to add new drivers to
the pxeboot initrd/kernel? It appears that although some newer dells
(t300) have Broadcom NetXtreme IIs in them, 4.6 won’t recognize them for
some reason (possibly because they’re dual port?)


You can use a driver disk hosted on either the install media or a usb 
key / floppy disk / cd-r

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Re: [CentOS] /etc/sysctl.conf edit not permanent

[John R Pierce]

Joseph L. Casale wrote:

I have edited ip forwarding in /etc/sysctl.conf yet when I issue a
#service network restart I see it get set back to 0.
Why is that?
  


I believe that gets set/reset in /etc/sysctl/network* somewhere


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[CentOS] Adding new drivers to the pxeboot initrd/kernel

[Drew Weaver]

Does anyone have a howto or documentation on how to add new 
drivers to the pxeboot initrd/kernel? It appears that although some newer dells 
(t300) have Broadcom NetXtreme IIs in them, 4.6 won't recognize them for some 
reason (possibly because they're dual port?)

-Drew

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[CentOS] Re: smp falls back to up mode on quad core

[Scott Silva]

on 5-28-2008 8:09 AM Julian Echave spake the following:

Solved it!
After quite a lot of messing around...
It turns out i was booting with the acpi=off option, but for the BIOS to 
see the 4 processors acpi has to be on.
The problem was that with acpi=on, boot hangs, unless pci=nommconf is 
added to the boot options.


To summarize,

I now boot using the options

acpi = on pci=nommconf

Thanks.

Julian.

Doesn't acpi default to on? So you "should" be able to just have pci=nommconf.


--
MailScanner is like deodorant...
You hope everybody uses it, and
you notice quickly if they don't



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Re: [CentOS] IPChains

[Jim Perrin]

On Wed, May 28, 2008 at 11:13 AM, Chris Heiner
<[EMAIL PROTECTED]> wrote:
> How can I tell if its running?


IPChains is pretty oldschool. The only version of centos which might
still use ipchains would be 2.1.


What version of centos are you using?

You can probably get the information you want from 'service iptables status'.



-- 
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George Orwell
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[CentOS] IPChains

[Chris Heiner]

How can I tell if its running?

 

Where is the default location?

 

Thanks..

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Re: [CentOS] smp falls back to up mode on quad core

[Julian Echave]

Solved it!
After quite a lot of messing around...
It turns out i was booting with the acpi=off option, but for the BIOS to see
the 4 processors acpi has to be on.
The problem was that with acpi=on, boot hangs, unless pci=nommconf is added
to the boot options.

To summarize,

I now boot using the options

acpi = on pci=nommconf

Thanks.

Julian.


On Tue, May 27, 2008 at 6:29 PM, MHR <[EMAIL PROTECTED]> wrote:

> On Tue, May 27, 2008 at 1:41 PM, John R Pierce <[EMAIL PROTECTED]>
> wrote:
> > Julian Echave wrote:
> >>
> >> Sure, find below, I add other stuff as well. Note that there is some bug
> >> in the Bios. This does not prevent Centos to boot, and, since Windows
> sees
> >> all four processors, I reckon it shouldn't be the problem...?
> >
> >
> > yeah, looks like its probably broken ACPI data in the BIOS.  see if the
> > mainboard or system vendor has a BIOS update to fix this.   just because
> > operating system "X" works, doesn't mean its 'right'.
> >
>
> You can try adding 'noacpi' to your boot string in your grub.conf file
> and see if that helps.
>
> I have an AMD Athlon 64 x2 on an ECS mobo that is known to have a
> problem with acpi.  If I try to run without the noacpi switch, it runs
> very poorly and crashes or halts within minutes of booting, if it
> boots at all.  With the flag, it runs smooth as silk.
>
> mhr
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[CentOS] /etc/sysctl.conf edit not permanent

[Joseph L. Casale]

I have edited ip forwarding in /etc/sysctl.conf yet when I issue a
#service network restart I see it get set back to 0.
Why is that?

Thanks,
jlc
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Re: [CentOS] Secure iptables settings

[Sébastien AVELINE]

Joseph L. Casale a écrit :

I really didn't understand what you are trying to accomplish. Please
give more details, perhaps explain what problem are you trying to
solve.

Filipe



Filipe,
No problem, but rather just want to make sure the original config never changes 
or persists past a reboot.

Thanks,
jlc
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You can add your iptables rules on command line and when you are 
satisfied do a:

service iptables save
It will rewrite the rules into /etc/sysconfig/iptables. Make sure your 
iptables service is configured for being started on boot (chkconfig 
iptables on).


Sebastien.

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Re: [CentOS] get widescreen 1280x800 for intel 965GM chipset

[Rainer Traut]

Frank Cox schrieb:

On Sun, 25 May 2008 21:31:53 -0400
Chen Xu <[EMAIL PROTECTED]> wrote:


I have trouble to get 1280x800 resolution. The driver used is I810. I don't know
if the chipset is too new for the xorg driver, and can anyone tell me
if there is a fix,
maybe with 915resolution?


http://www.melvilletheatre.com/articles/intel-widescreen/index.html



This did not work here on an acer laptop with C5.1;
because I used the 915resolution rpm from rpmforge and this does not 
include an init script...


I did to make it work:

- installed the 915resolution-0.5.2-2.el5.rf.rpm from rpmforge
- added the following line to /etc/rc.d/rc.local
/usr/sbin/915resolution 54 1280 800 32
- that's all; no need to fiddle with xorg.conf because it just changes 
the reolution #54 from 1024x768 to 1280x800


Hth
Rainer



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Re: [CentOS] FireFox

[Karanbir Singh]

Robert Spangler wrote:

Can anyone tell me if there are plans to update Firefox to the new 3.0 for
Centos 4.5?  Seems like only the 1.5 version has been placed in the repos and
I think it should be time for an upgrade.



I have a Firefox3 beta3 rpm for CentOS-4 that works in parallel with the 
distro firefox. once Firefox3 is released upstream I will get that built 
for CentOS-4 and put that in the CentOS Plus repo.


- KB
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RE: [CentOS] Secure iptables settings

[Joseph L. Casale]

>I really didn't understand what you are trying to accomplish. Please
>give more details, perhaps explain what problem are you trying to
>solve.
>
>Filipe

Filipe,
No problem, but rather just want to make sure the original config never changes 
or persists past a reboot.

Thanks,
jlc
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[CentOS] CPU temperature in an PowerEdge 860, LM85 chip

[Santi Saez]

Dear Srs,

I'm trying to monitor CPU temperatures in a PowerEdge 860 server,  
running CentOS 5.1 with 2.6.18-53.1.6.el5 kernel, using lm-sensors  
v2.10.0.


Running "sensors-detect" I get:

==
(..)
We can start with probing for (PCI) I2C or SMBus adapters.
You do not need any special privileges for this.
Do you want to probe now? (YES/no):
Probing for PCI bus adapters...
Use driver `i2c-i801' for device 00:1f.3: Intel ICH7
Probe succesfully concluded.

We will now try to load each adapter module in turn.
Load `i2c-i801' (say NO if built into your kernel)? (YES/no):
Module loaded succesfully.
(..)


(..)
Next adapter: SMBus I801 adapter at 08c0
Do you want to scan it? (YES/no/selectively):
Client found at address 0x08
Client found at address 0x2e
(..)


(..)
Probing for `National Semiconductor LM85 or LM96000'... Success!
   (confidence 7, driver `lm85')
(..)


(..)
Client found at address 0x50
Probing for `SPD EEPROM'... Success!
   (confidence 8, driver `eeprom')
Probing for `DDC monitor'... Failed!
Probing for `Maxim MAX6900'... Failed!
Client found at address 0x52
Probing for `SPD EEPROM'... Success!
   (confidence 8, driver `eeprom')
Client found at address 0x60
Client found at address 0x69
(..)
==

This is the result of running "lm-sensors":

==
Driver `lm85' (should be inserted):
 Detects correctly:
 * Bus `SMBus I801 adapter at 08c0'
   Busdriver `i2c-i801', I2C address 0x2e
   Chip `National Semiconductor LM85 or LM96000' (confidence: 7)

Driver `eeprom' (should be inserted):
 Detects correctly:
 * Bus `SMBus I801 adapter at 08c0'
   Busdriver `i2c-i801', I2C address 0x50
   Chip `SPD EEPROM' (confidence: 8)
 * Bus `SMBus I801 adapter at 08c0'
   Busdriver `i2c-i801', I2C address 0x52
   Chip `SPD EEPROM' (confidence: 8)
==

So, lm85 chip is correctly detected. Running "sensors" I get this  
output:


==
# sensors
lm85-i2c-0-2e
Adapter: SMBus I801 adapter at 08c0

V1.5:   +0.00 V  (min =  +1.42 V, max =  +1.58 V)
VCore:  +0.00 V  (min =  +1.03 V, max =  +1.14 V)
V3.3:   +0.00 V  (min =  +3.13 V, max =  +3.47 V)
V5:+0.00 V  (min =  +4.74 V, max =  +5.26 V)
V12:   +0.00 V  (min = +11.38 V, max = +12.62 V)
CPU_Fan:  0 RPM  (min = 4000 RPM) ALARM
fan2: 0 RPM  (min =0 RPM) ALARM
fan3: 0 RPM  (min =0 RPM) ALARM
fan4: 0 RPM  (min =0 RPM) ALARM
CPU:  +0°C  (low  =   +10°C, high =   +50°C)
Board:+0°C  (low  =   +10°C, high =   +35°C)
Remote:   +0°C  (low  =   +10°C, high =   +35°C)
CPU_PWM:   255
Fan2_PWM:  255
Fan3_PWM:  255
vid:  +1.088 V  (VRM Version 10.0)
==

Extraneous output, all temperature values returned are +0ºC, it's  
possible to monitor this motherboard sensors using lm-sensors?


Also I have tried to monitor PowerEdge 860 using OpenIPMI, but I get:

==
# ipmitool sdr elist | grep -i temp
Temp | 01h | ns  |  3.1 | Disabled
Planar Temp  | 04h | ok  |  7.1 | 28 degrees C
Temp Interface   | 53h | ns  |  7.1 | Disabled
==

What means "Planar Temp"? And why "Temp" and "Temp Interface" params  
are disabled? Can I get CPU temperature with using IMPI?


If I can't get temperatures using lm-sensors or OpenIPMI, what  
utility is available for Linux? thanks!!


Regards,

--
Santi Saez

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[CentOS] Alberto Varesio is out of the office.

[A . Varesio]

I will be out of the office starting  05/28/2008 and will not return until
05/29/2008.

prova

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[CentOS] Problem accessing to Windows Terminal Server in load balancing.

[ArcosCom Linux User]

Hi guys, I have this configuration:


LAN -- LINUX BRIDGE -- LINUX BRIDGE -- TS

The linux's bridges are for wifi purposes (2 centos machines) and is
working fine.

The problem I have is that the TS are 3 windows TS in load balancing
configuration. There is 1 IP for general purposes and every TS has its own
IP.
For example, the configuration is:

192.168.0.1/24  TS1
192.168.0.2/24  TS2
192.168.0.3/24  TS3
192.168.0.10/24 (TS server IP for load balancing)

The problem I encountered is that every PC into the LAN has access from
the LAN to every TS (tested with ping), but them have no access to the IP
for load balancing.

I observed that all TSn IP's has their ARP entry in the ARP table, but the
IP for load balancing not.

How can I solve this problem at the bridge level? I think that there is
something that the bridges are filtering and perhaps is because the TS
load balancing software uses various "virtual macs" for the load balancing
IP.

Perhaps I must change any /proc/sys/net/ipv4/conf// file to bypass
this filter, I'm thinking in "arp_ignore", put a "1" into it, but is a
production environment and I don't want to loss the access to the devices.

Any help?

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Re: [CentOS] simple load balancing/failover for OWA

[Amos Shapira]

On Fri, Apr 4, 2008 at 11:36 PM, Matt Shields <[EMAIL PROTECTED]> wrote:
> On Fri, Apr 4, 2008 at 9:03 AM, Ruslan Sivak <[EMAIL PROTECTED]> wrote:
>> David Hrbác wrote:
>>
>> > Ruslan Sivak napsal(a):
>> >
>> > > We are building an exchange cluster with two front end Outlook Web
>> Access servers.  We would like to at least have some sort of failover, and
>> prefereably load balancing for them.
>> > >
>> > > Russ
>> > >
>> >
>> > Russ,
>> > take a look at
>> http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html
>> > David
>> > ___
>> >
>>  Yes, that what I was thinking.  However, I believe these servers also run
>> smtp, pop3, imap,etc, so I don't think Apache can handle all of those..
>
> LVS handles all protocols.  It can do any port and UDP or TCP.  It
> supports different types of balancing Round Robin (rr), Weighted Round
> Robin (wrr), Least Connections (lc), Weighted Least Connections (wlc).
>  It can do sticky sessions, so if OWA doesn't like when you go from
> server 1 to server 2, LVS will keep the user stuck to one server.
> Plus a ton of other features.  Give it a shot.

I'm trying to setup a couple of LVS servers on CentOS 5 and hitting
difficulties.
I've been googl'ing around the docs (it mostly all gets back to
http://www.austintek.com/LVS/LVS-HOWTO/mini-HOWTO/LVS-mini-HOWTO.html)
for a few days now but can't get it to work. It sometimes work
temporarily but very quickly a few fail-overs made things totally
unworkable.

One issue I suspect that might be in my way to success is that the two
servers (I'm trying to use same two servers both as ldirectors and
real servers) are assigned to two separate /28 networks, BUT the
virtual rack (from ThePlanet) allows both of them to be assigned
addresses from each other's network so I assigned an address from the
correct network on an alias on the other server (eth0:0).

Does anyone have a working example for this on CentOS 5? The docs I
found so far are mostly generic and talk a lot about ancient kernel
versions like 2.0, 2.2 and 2.4.

I subscribed to the lvs-users mailing list but I'm not sure how active it is.

Thanks,

--Amos
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Re: [CentOS] Re: memorial day kernel panic

[Peter Hinse]

William L. Maltby wrote:

On Tue, 2008-05-27 at 14:24 -0400, sbeam wrote:

On Tuesday 27 May 2008 13:16, Miguel Medalha wrote:

Some Tyan boards are known as being very picky with RAM. If you want to
avoid problems, you should really stick to the types listed in Tyan's
memory compatibility list.
hmm. well the spec sheet just says "unbuffered DDR 266/200" and that is what 
we got. I never noticed there was a list of "recommended" memory, but your 
comment made me look and I found one. PQI is not on the list :(


But... we had a similar system with the same mobo and ram stick - only one 
512M, not 2x1G like these - that was running for years with nary a hiccup 
until the disks died. The one we are having problems with was its 
upgrade/replacement. Maybe this is a problem though.


I recently had a problem upgrading to 2x1GB PC3200 (> DDR 400) in one of
my home units. Ultimate solution: tweaked the DRAM voltage to 2.7 volts.
Took a long time because I didn't want to fry the DIMMS and there were
no specs anywhere that specified the voltage.


We faced a similar situation lately (however, on a fedora system). After 
swapping each and every part of the hardware, we found some USB 
temperature sensors and their kernel drivers to be the source of all 
problems. After unplugging the USB devices and unloading the kernel 
modules, the machine runs without any problems.


Regards,

Peter
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