date:20110328

I'm trying to install CentOS-5.5 on my new HP micro-server,
which has no CD drive.

I've set up cobbler and cobbler-web on my old server,
and can access cobbler-web from my laptop.

I have 3 queries about the installation.

1. Is there any advantage is using the 64-bit CentOS
rather than 32-bit?

2. The CentOS OS seems to be available in 7 or 8 CDs.
(I tried downloading the DVD ISO with ktorrent,
but this was a complete failure.
It started OK, but then created literally thousands of links
to one file, which brought my server down,
and left it in a state which was quite hard to clean up.)

But how exactly do I cobbler import these?
I see that for Fedora on my laptop I ran
sudo cobbler import --path=/mnt/dvd --name=F14-i386

3. Is there actually a way of converting the 7 or 8 CD ISOs
into a DVD ISO?
I saw instructions that suggested concatenating them,
and then running rsync against a DVD ISO, at
http://lists.centos.org/pipermail/centos/2011-January/104448.html.
I tried the site recommended, but could not access the DVD ISO.

In fact, if I could access a DVD ISO, couldn't I download it directly?
So what would be the point of this exercise?


-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Ray Van Dolson

On Mon, Mar 28, 2011 at 03:49:21PM +0100, Timothy Murphy wrote:
 I'm trying to install CentOS-5.5 on my new HP micro-server, which has
 no CD drive.
 
 I've set up cobbler and cobbler-web on my old server, and can access
 cobbler-web from my laptop.
 
 I have 3 queries about the installation.
 
 1. Is there any advantage is using the 64-bit CentOS rather than
 32-bit?
 
 2. The CentOS OS seems to be available in 7 or 8 CDs.  (I tried
 downloading the DVD ISO with ktorrent, but this was a complete
 failure.  It started OK, but then created literally thousands of
 links to one file, which brought my server down, and left it in a
 state which was quite hard to clean up.)
 
 But how exactly do I cobbler import these?  I see that for Fedora
 on my laptop I ran
 sudo cobbler import --path=/mnt/dvd --name=F14-i386
 
 3. Is there actually a way of converting the 7 or 8 CD ISOs into a
 DVD ISO?  I saw instructions that suggested concatenating them, and
 then running rsync against a DVD ISO, at
 http://lists.centos.org/pipermail/centos/2011-January/104448.html.
 I tried the site recommended, but could not access the DVD ISO.
 
 In fact, if I could access a DVD ISO, couldn't I download it
 directly?  So what would be the point of this exercise?

Why not use the netinstall ISO rather than download everything?

Recreating a DVD image from the ISO's _is_ possible, but honestly, not
worth the work, IMHO.

Perhaps the LiveCD ISO would be an option as well (I belive you can
install from it).

x86_64 is useful if you're going to have a lot of memory or large file
systems.

Ray
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Timothy Murphy wrote:
 I'm trying to install CentOS-5.5 on my new HP micro-server,
 which has no CD drive.

 I've set up cobbler and cobbler-web on my old server,
 and can access cobbler-web from my laptop.

 I have 3 queries about the installation.

 1. Is there any advantage is using the 64-bit CentOS
 rather than 32-bit?

If it runs 64 bit, you should use 64 bit. Unless you also have half the
cylinders on your car disabled, and g

 2. The CentOS OS seems to be available in 7 or 8 CDs.
 (I tried downloading the DVD ISO with ktorrent,
 but this was a complete failure.
 It started OK, but then created literally thousands of links
 to one file, which brought my server down,
 and left it in a state which was quite hard to clean up.)

Dunno. Last time I brought down the DVD iso, I had no trouble just doing a
straight d/l, no torrent.

snip cobbler question

 3. Is there actually a way of converting the 7 or 8 CD ISOs
 into a DVD ISO?
 I saw instructions that suggested concatenating them,
 and then running rsync against a DVD ISO, at
 http://lists.centos.org/pipermail/centos/2011-January/104448.html.
 I tried the site recommended, but could not access the DVD ISO.

Mount the CD isos using loopback (mount -o loop), and copy.
snip
 mark

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

On 3/28/2011 9:49 AM, Timothy Murphy wrote:
 I'm trying to install CentOS-5.5 on my new HP micro-server,
 which has no CD drive.

 I've set up cobbler and cobbler-web on my old server,
 and can access cobbler-web from my laptop.

 I have 3 queries about the installation.

 1. Is there any advantage is using the 64-bit CentOS
 rather than 32-bit?

 2. The CentOS OS seems to be available in 7 or 8 CDs.
 (I tried downloading the DVD ISO with ktorrent,
 but this was a complete failure.
 It started OK, but then created literally thousands of links
 to one file, which brought my server down,
 and left it in a state which was quite hard to clean up.)

 But how exactly do I cobbler import these?
 I see that for Fedora on my laptop I ran
  sudo cobbler import --path=/mnt/dvd --name=F14-i386

 3. Is there actually a way of converting the 7 or 8 CD ISOs
 into a DVD ISO?

Cobbler is kind of overkill for a single install. If you can drop the CD 
iso images under an NFS export, boot from USB and do an nfs install 
you'll be done before you'd have cobbler set up.

-- 
   Les Mikesell
lesmikes...@gmail.com

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread David Sommerseth

On 28/03/11 16:49, Timothy Murphy wrote:
I'm trying to install CentOS-5.5 on my new HP micro-server,
which has no CD drive.

I've set up cobbler and cobbler-web on my old server,
and can access cobbler-web from my laptop.

I have 3 queries about the installation.

1. Is there any advantage is using the 64-bit CentOS
rather than 32-bit?

Yes, there are advantages to use 64-bit instead of 32-bit. But it also
depends on how much memory you have. If you have more that 4GB RAM, you
should really not depend on 32-bit at all. This is a hardware limit on the
CPU level. However, Intel did enable some hacks to make it possible to use
more than 4GB RAM on the IA32 based CPUs. Those are mostly known as PAE
enabled kernels. But few kernel developer really likes PAE.

Another limitation is that 32-bit applications have limited memory
available compared to a 64-bit application. PAE might even slow down the
kernel.

Don't go PAE if you can go 64-bit. There are really no good reasons why
not to use 64-bit today. There are quite few software packages which is
not ready for 64 bit nowadays, and those should rather be fixed than to
keep users back on 32 bit.

If you for some reason need to run 32-bit user stack, it is even possible
to install and a 64 bit kernel on a 100% 32-bit user space. And a running
32-bit applications in a 64-bit setup is possible, as long as you have the
32-bit glibc and other needed support libraries installed. However, 32-bit
applications have the same memory limitation when running.

For some brief PAE discussion, see here:
http://www.held.org.il/blog/2008/07/pae-whats-that-and-how-bad-for-performance/
http://kerneltrap.org/node/3816
http://www.linuxquestions.org/questions/linux-general-1/32-bit-os-and-4gb-memory-limit-707762/

Having all this said, RHEL supports up to 16GB with PAE on 32bit, thus
CentOS will do the same. However, if can avoid it and install 64-bit, I
recommend you to do that instead. PAE is really dying, and you'll likely
have more issues with PAE than 64-bit in the long run.

kind regards,

David Sommerseth

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Rainer Duffner


Am 28.03.2011 um 16:49 schrieb Timothy Murphy:

 I'm trying to install CentOS-5.5 on my new HP micro-server,
 which has no CD drive.

 I've set up cobbler and cobbler-web on my old server,
 and can access cobbler-web from my laptop.

 I have 3 queries about the installation.

 1. Is there any advantage is using the 64-bit CentOS
 rather than 32-bit?



I'd use 32bit if you are sure you are never going to use more than 2GB  
RAM.
Ever.


 2. The CentOS OS seems to be available in 7 or 8 CDs.
 (I tried downloading the DVD ISO with ktorrent,
 but this was a complete failure.


I don't know what you did, but when I downloaded  the torrent, it  
created only a handful of files.
The DVD ISOs are available on my local mirror, so they should be  
elsewhere, too.


 It started OK, but then created literally thousands of links
 to one file, which brought my server down,
 and left it in a state which was quite hard to clean up.)

 But how exactly do I cobbler import these?
 I see that for Fedora on my laptop I ran
sudo cobbler import --path=/mnt/dvd --name=F14-i386


Download the DVDs and import them.






___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

m.r...@5-cent.us wrote:

 2. The CentOS OS seems to be available in 7 or 8 CDs.
 (I tried downloading the DVD ISO with ktorrent,
 but this was a complete failure.
 It started OK, but then created literally thousands of links
 to one file, which brought my server down,
 and left it in a state which was quite hard to clean up.)
 
 Dunno. Last time I brought down the DVD iso, I had no trouble just doing a
 straight d/l, no torrent.

Where did you find the DVD ISO?
When I follow the download instructions at http://www.centos.org/
I am only offered local, ie west european, mirrors,
and none of those I looked at had the DVD ISO;
all of them just had 8 CD ISOs.

 Mount the CD isos using loopback (mount -o loop), and copy.
 snip

I didn't follow this.
Do you mean mount each of the 8 CDs using loopback?
And what exactly am I meant to copy?

I need to indicate where cobbler import should look, I assume.


-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Ray Van Dolson wrote:

 Why not use the netinstall ISO rather than download everything?

How exactly do I do this?
I guess I could install it on a USB stick,
and boot that on my new server.
Is that what you mean?
(There is no CD drive on the server.)

I can actually run Fedora-14 from a USB stick on the new machine,
and have used that to partition the disk.



-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Rainer Duffner



Am 28.03.2011 um 17:37 schrieb Timothy Murphy:


m.r...@5-cent.us wrote:


2. The CentOS OS seems to be available in 7 or 8 CDs.
(I tried downloading the DVD ISO with ktorrent,
but this was a complete failure.
It started OK, but then created literally thousands of links
to one file, which brought my server down,
and left it in a state which was quite hard to clean up.)


Dunno. Last time I brought down the DVD iso, I had no trouble just  
doing a

straight d/l, no torrent.


Where did you find the DVD ISO?



Here, e.g.:
http://mirror.switch.ch/ftp/mirror/centos/5/isos/x86_64/



I need to indicate where cobbler import should look, I assume.





Normally, you loopback-mount the DVDs at /mnt/bla
and then you point cobbler at /mnt/bla

But, with the 5.5 release consisting of two DVDs, I'm no longer 100%  
sure how I imported them.

Best ask on the cobbler-ML...


Rainer___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Les Mikesell wrote:

 Cobbler is kind of overkill for a single install. If you can drop the CD
 iso images under an NFS export, boot from USB and do an nfs install
 you'll be done before you'd have cobbler set up.

I'm not sure what you mean by drop the CD iso images under NFS.

In any case, I'd prefer to use cobbler, as it seems the simplest way to go,
once it is set up,
and I'm thinking of installing CentOS-6 later, when it arrives.

So I'll repeat my query, which as far as I can see no-one has answered:
how do I use cobbler with 8 CD ISOs?
To be specific, what exactly do I cobbler import?

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Rainer Duffner


Am 28.03.2011 um 17:45 schrieb Timothy Murphy:


 So I'll repeat my query, which as far as I can see no-one has  
 answered:
 how do I use cobbler with 8 CD ISOs?
 To be specific, what exactly do I cobbler import?


You don't.
You import the DVD(s).



___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

On 3/28/2011 10:41 AM, Timothy Murphy wrote:
 Ray Van Dolson wrote:

 Why not use the netinstall ISO rather than download everything?

 How exactly do I do this?
 I guess I could install it on a USB stick,
 and boot that on my new server.
 Is that what you mean?
 (There is no CD drive on the server.)

Yes, there should be a small boot image along with the isos that you can 
boot from usb or pxe, then you pick the nfs install method and put in 
the path to the directory where you downloaded the CD iso images.  There 
are other network install options, but nfs is quick and easy if you've 
already downloaded the iso images.

-- 
   Les Mikesell
lesmikes...@gmail.com


___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Ray Van Dolson

On Mon, Mar 28, 2011 at 10:59:23AM -0500, Les Mikesell wrote:
 On 3/28/2011 10:41 AM, Timothy Murphy wrote:
  Ray Van Dolson wrote:
 
  Why not use the netinstall ISO rather than download everything?
 
  How exactly do I do this?
  I guess I could install it on a USB stick,
  and boot that on my new server.
  Is that what you mean?
  (There is no CD drive on the server.)
 
 Yes, there should be a small boot image along with the isos that you can 
 boot from usb or pxe, then you pick the nfs install method and put in 
 the path to the directory where you downloaded the CD iso images.  There 
 are other network install options, but nfs is quick and easy if you've 
 already downloaded the iso images.

Yep, or point to an internet-sourced HTTP address and let the install
run overnight if you've got a slow connection...

One _real_ quick way to join all your CD ISO's together is to use
fuse-unionfs on an existing Linux box.  Tell it to union each of your
loopback mounted ISO mountpoints into a new mountpoint, then export
that via NFS to your installation client (or via HTTP).

Ray
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

On 3/28/2011 10:45 AM, Timothy Murphy wrote:
 Les Mikesell wrote:

 Cobbler is kind of overkill for a single install. If you can drop the CD
 iso images under an NFS export, boot from USB and do an nfs install
 you'll be done before you'd have cobbler set up.

 I'm not sure what you mean by drop the CD iso images under NFS.

I mean download directly into a directory already exported in NFS.  Or 
if they aren't already there, either export the path where they are or 
copy them to one that is nfs-exported.  If you have a linux box and 
aren't using nfs, that means put the directory (or something above the 
one containing the files in /etc/exports and 'exportfs -a' or 'service 
nfs restart'.

 In any case, I'd prefer to use cobbler, as it seems the simplest way to go,
 once it is set up,
 and I'm thinking of installing CentOS-6 later, when it arrives.

I can't think of anything much simpler than downloading to a directory 
and being basically done.  Normally on a server with a CD drive I'd burn 
the 1st CD to boot, but there is a small boot image that you can put on 
USB to boot into the installer.  The nfs install will as for the server 
(dns name or IP) and the path which will be what you exported or the 
path to a subdirectory below where the iso files are.  CentOS-6 will 
probably install the same way.  The installer knows how to deal with the 
separate CD iso images directly.  I think you have to make an extra link 
somewhere if you try to install from a dvd image over nfs.

-- 
   Les Mikesell
lesmikes...@gmail.com

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Sometimes the path of least resistance is best, spend $40 on a USB DVD and call 
it a day.
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

On 3/28/2011 11:13 AM, Ray Van Dolson wrote:

 One _real_ quick way to join all your CD ISO's together is to use
 fuse-unionfs on an existing Linux box.  Tell it to union each of your
 loopback mounted ISO mountpoints into a new mountpoint, then export
 that via NFS to your installation client (or via HTTP).

You don't need to do that.  The nfs installer is perfectly happy with a 
directory containing the CD iso images and it does whatever loopback 
mount magic it needs for you.

-- 
   Les Mikesell
lesmikes...@gmail.com

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Ray Van Dolson

On Mon, Mar 28, 2011 at 11:23:49AM -0500, Les Mikesell wrote:
 On 3/28/2011 11:13 AM, Ray Van Dolson wrote:
 
  One _real_ quick way to join all your CD ISO's together is to use
  fuse-unionfs on an existing Linux box.  Tell it to union each of your
  loopback mounted ISO mountpoints into a new mountpoint, then export
  that via NFS to your installation client (or via HTTP).
 
 You don't need to do that.  The nfs installer is perfectly happy with a 
 directory containing the CD iso images and it does whatever loopback 
 mount magic it needs for you.
 

Had never tried that.  Good to know.

Ray
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Nataraj

On 03/28/2011 08:45 AM, Timothy Murphy wrote:
 Les Mikesell wrote:

 Cobbler is kind of overkill for a single install. If you can drop the CD
 iso images under an NFS export, boot from USB and do an nfs install
 you'll be done before you'd have cobbler set up.
 I'm not sure what you mean by drop the CD iso images under NFS.

 In any case, I'd prefer to use cobbler, as it seems the simplest way to go,
 once it is set up,
 and I'm thinking of installing CentOS-6 later, when it arrives.

 So I'll repeat my query, which as far as I can see no-one has answered:
 how do I use cobbler with 8 CD ISOs?
 To be specific, what exactly do I cobbler import?

Cobbler is rather complex to setup.  If you want to pxeboot, you can
still do this much faster by setting up a tftp server, a dhcp server and
exporting the install tree  via NFS or HTTP. I simply loop mount the ISO
image and export the mounted DVD via NFS.   I use something similar to
what is described
herehttps://help.ubuntu.com/community/PXEInstallMultiDistro

In your case, I think I would just follow Les Mikesell's advice and do
an NFS install.  This is described in the Redhat installation guide. 
See the sections on Preparing for an NFS install, Selecting an
installation Method, and Installing via NFS.  Alternatively you can
use HTTP instead of NFS.

Nataraj


___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

 Cobbler is rather complex to setup.  If you want to pxeboot, you can still do 
 this much faster by setting up a tftp server, a dhcp server and exporting the 
 install tree  via NFS or HTTP. I simply loop mount the ISO image and export 
 the mounted DVD via NFS.   I use something similar to
  what is described here 
 https://help.ubuntu.com/community/PXEInstallMultiDistro

The machine is a glorified netbook, I just can't see why someone would go 
through THAT much trouble to get it up and running. Like I said before, just 
buy a USB DVD, and save yourself a lot of grief :P
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

On 3/28/2011 11:28 AM, Nataraj wrote:

 Cobbler is rather complex to setup. If you want to pxeboot, you can
 still do this much faster by setting up a tftp server, a dhcp server and
 exporting the install tree via NFS or HTTP. I simply loop mount the ISO
 image and export the mounted DVD via NFS. I use something similar to
 what is described
 herehttps://help.ubuntu.com/community/PXEInstallMultiDistro

 In your case, I think I would just follow Les Mikesell's advice and do
 an NFS install. This is described in the Redhat installation guide. See
 the sections on Preparing for an NFS install, Selecting an
 installation Method, and Installing via NFS. Alternatively you can
 use HTTP instead of NFS.

An nfs install works just by pointing to a directory containing the 
downloaded CD isos.  For http you'd have to loopback-mount or copy the 
files out on the server side.

-- 
   Les Mikesell
lesmikes...@gmail.com
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

[CentOS] how to do this create the keyset-file for dnssec

2011-03-28 Thread fakessh @

it is, I'm coming I do not understand the need to recreate and validate
the file keyset-en ... I then recreate a good record with the key in
this file and my past signatures are good. I did not understand
correctly the operation of dlv


keyset files and I recreated downgrade bind to the stable version 9.3 of
CentOS 5.5 and using webmin. can you give me the command to use to
create files Keyset

I did not find any documentation regarding the creation of this type of
file 

how to do this create the keyset-file for dnssec
-- 
gpg --keyserver pgp.mit.edu --recv-key 092164A7
http://pgp.mit.edu:11371/pks/lookup?op=getsearch=0x092164A7


signature.asc
Description: Ceci est une partie de message	numériquement signée
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Timothy Murphy wrote:
 m.r...@5-cent.us wrote:

 2. The CentOS OS seems to be available in 7 or 8 CDs.
 (I tried downloading the DVD ISO with ktorrent,
 but this was a complete failure.
 It started OK, but then created literally thousands of links
 to one file, which brought my server down,
 and left it in a state which was quite hard to clean up.)

 Dunno. Last time I brought down the DVD iso, I had no trouble just doing
 a straight d/l, no torrent.

 Where did you find the DVD ISO?
 When I follow the download instructions at http://www.centos.org/
 I am only offered local, ie west european, mirrors,
 and none of those I looked at had the DVD ISO;
 all of them just had 8 CD ISOs.

Ok, I had to search a little, and I am in the US, but I went to the mirror
list, and picked from there. A few judicious checks - edu, rackspace, but
then I saw supercomputer center, and found a 2-part DVD iso at
http://mirrors.arsc.edu/centos/5/isos/x86_64/

 Mount the CD isos using loopback (mount -o loop), and copy.
 snip

 I didn't follow this.
 Do you mean mount each of the 8 CDs using loopback?
 And what exactly am I meant to copy?

d/l the .iso's, mkdir /mnt/disk1 /mnt/disk2/...
mount -o loop /whereeverIdl/centos_cd_disk1.iso /mnt/disk1
etc.
mkdir /mnt/centos_dvd
cp -p /mnt/disk1/* /mnt/disk2/*... /mnt/centos_dvd/

I mean, I'm not thinking about this a lot, but if that doesn't work, you
could copy the rpms into the directory, or you could try
cp -p /mnt/disk1/ /mnt/disk2/... /mnt/centos_dvd/
which would give you disk1... under /mnt/centos_dvd, and burn that onto
one or two dvds.

 I need to indicate where cobbler import should look, I assume.

Worked *some* with Spacewalk, not really at all with cobbler, so I can't
answer that.

   mark

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Ray Van Dolson wrote:
 On Mon, Mar 28, 2011 at 11:23:49AM -0500, Les Mikesell wrote:
 On 3/28/2011 11:13 AM, Ray Van Dolson wrote:
 
  One _real_ quick way to join all your CD ISO's together is to use
  fuse-unionfs on an existing Linux box.  Tell it to union each of your
  loopback mounted ISO mountpoints into a new mountpoint, then export
  that via NFS to your installation client (or via HTTP).

 You don't need to do that.  The nfs installer is perfectly happy with a
 directory containing the CD iso images and it does whatever loopback
 mount magic it needs for you.

So is local install: it will ask where for the directory where the images
are stored, if you tell it to install from the hd. Does it for my USB key
install that I posted last year.

mark

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Robert Heller

At Mon, 28 Mar 2011 16:37:33 +0100 CentOS mailing list centos@centos.org 
wrote:

 
 m.r...@5-cent.us wrote:
 
  2. The CentOS OS seems to be available in 7 or 8 CDs.
  (I tried downloading the DVD ISO with ktorrent,
  but this was a complete failure.
  It started OK, but then created literally thousands of links
  to one file, which brought my server down,
  and left it in a state which was quite hard to clean up.)
  
  Dunno. Last time I brought down the DVD iso, I had no trouble just doing a
  straight d/l, no torrent.
 
 Where did you find the DVD ISO?
 When I follow the download instructions at http://www.centos.org/
 I am only offered local, ie west european, mirrors,
 and none of those I looked at had the DVD ISO;
 all of them just had 8 CD ISOs.
 
  Mount the CD isos using loopback (mount -o loop), and copy.
  snip
 
 I didn't follow this.
 Do you mean mount each of the 8 CDs using loopback?

Yes.

 And what exactly am I meant to copy?

The entire first CD, preserving the directory structure, then copy the
contents of the CentOS subdir of the rest of the CDs to the CentOS
subdir of the copy.  WARNING: for x86_64 system, the resultant directory
is too big to fit on a standard 4700MB DVD-R -- you will have to 'skip'
some files.  The CentOS 5.x x86_64 distro is on 2 DVDs.  Just about
everything is on the first and the second contains about 400MB worth of
openoffice.org langpack files.  You probably don't need these (unless
you plan on writing documents in many, many, many different languages.

 
 I need to indicate where cobbler import should look, I assume.
 
 

-- 
Robert Heller -- 978-544-6933 / hel...@deepsoft.com
Deepwoods Software-- http://www.deepsoft.com/
()  ascii ribbon campaign -- against html e-mail
/\  www.asciiribbon.org   -- against proprietary attachments



 
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Robert Heller

At Mon, 28 Mar 2011 16:41:23 +0100 CentOS mailing list centos@centos.org 
wrote:

 
 Ray Van Dolson wrote:
 
  Why not use the netinstall ISO rather than download everything?
 
 How exactly do I do this?
 I guess I could install it on a USB stick,
 and boot that on my new server.

Actually, since you have already downloaded the 7 or 8 CDs, everything
you need is on the first CD (it actually contains a copy of netinstall
ISO).  Look in the images folder and read the README there.  There is a
disk image that can be copied to USB stick. Presumably you have some
other Linux machine on your LAN that can act as a NFS server -- in
which case you just need to put the CD ISOs in some directory and
export it read-only, after making sure NFSD is enabled and running
(portmap, mountd, nftd, lockd, etc.).  Otherwise, the installer can
just ftp the rpms one by one off the internet as it goes through the
install.

 Is that what you mean?
 (There is no CD drive on the server.)
 
 I can actually run Fedora-14 from a USB stick on the new machine,
 and have used that to partition the disk.
 
 
 

-- 
Robert Heller -- 978-544-6933 / hel...@deepsoft.com
Deepwoods Software-- http://www.deepsoft.com/
()  ascii ribbon campaign -- against html e-mail
/\  www.asciiribbon.org   -- against proprietary attachments


 
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Markus Falb

On 28.3.2011 17:36, Rainer Duffner wrote:
 
 Am 28.03.2011 um 16:49 schrieb Timothy Murphy:
 
 But how exactly do I cobbler import these?
 I see that for Fedora on my laptop I ran
sudo cobbler import --path=/mnt/dvd --name=F14-i386
 
 
 Download the DVDs and import them.

Or import over the net. cobbler import speaks rsync.

-- 
Kind Regards, Markus Falb



signature.asc
Description: OpenPGP digital signature
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] rssh / scponly

2011-03-28 Thread Markus Falb

On 28.3.2011 05:53, Tom Diehl wrote:

 According to
 https://bugzilla.redhat.com/show_bug.cgi?id=440240 and
 http://rhn.redhat.com/errata/RHSA-2009-1287.html the ability to chroot was
 backported into rhel/centos 5 back in 2009-09-02.
 
 In addition sshd_config(5) says the following:
 
 Subsystem
  Configures an external subsystem (e.g., file transfer daemon).
  Arguments should be a subsystem name and a command (with optional
  arguments) to execute upon subsystem request.
 
  The command sftp-server(8) implements the sftp file transfer subsystem.
  Alternately the name internal-sftp implements an in-process sftp server.
  This may simplify configurations using ChrootDirectory to force a 
 different
  filesystem root on clients.
 
  By default no subsystems are defined. Note that this option applies to
  protocol version 2 only.
 
 http://undeadly.org/cgi?action=articlesid=20080220110039 might be useful in
 setting this up.

Yes, it is possible to chroot with stock openssh in recent CentOS !

1. Unfortunately the Match directive is not backported, so the only
possibility is to chroot all users including root.
2. The chroot is not restricted to sftp. ssh is chrooted also.
3. All users are chrooted including root

I am aware of 2 possible methods to workaround this limitations:

Configure 2 ssh daemons, one chrooted for sftp and one default. The
chrooted sshd has to listen on another ip or port.

Or, alternatively (only one sshd needed)
ChrootDirectory %h
and change home for root to / (sounds nasty and it is ;-)

However you do it, the directory given to ChrootDirectory has to be
read-only for normal users. If it were writable the user could
manipulate the content of the chroot. Write access has to be restricted
to a subdirectory of ChrootDirectory.

-- 
Kind Regards, Markus Falb



signature.asc
Description: OpenPGP digital signature
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Rainer Duffner wrote:

 The DVD ISOs are available on my local mirror, so they should be
 elsewhere, too.

Where is your local mirror?
As I said, I couldn't see them on any of the mirrors offered to me.

-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Ryan Wagoner

On Mon, Mar 28, 2011 at 2:47 PM, Timothy Murphy gayle...@eircom.net wrote:
 Rainer Duffner wrote:

 The DVD ISOs are available on my local mirror, so they should be
 elsewhere, too.

 Where is your local mirror?
 As I said, I couldn't see them on any of the mirrors offered to me.

 --
 Timothy Murphy
 e-mail: gayleard /at/ eircom.net
 tel: +353-86-2336090, +353-1-2842366
 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

kernel.org has the ISOs.

http://mirrors.kernel.org/centos/5.5/isos/x86_64/

Ryan
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Mark Tomandl


Timothy Murphy wrote:

Rainer Duffner wrote:

  

The DVD ISOs are available on my local mirror, so they should be
elsewhere, too.



Where is your local mirror?
As I said, I couldn't see them on any of the mirrors offered to me.

  


The kernel.org mirror system has servers in the EU and has the DVDs. 
From the link below choose your architecture, download and verify the 
iso files, and you should be good to go.

http://mirrors.eu.kernel.org/centos/5/isos/
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Failed to start new browser session: Error while launching browser on session null

2011-03-28 Thread ken

On 03/28/2011 05:58 AM Roland RoLaNd wrote:
 Hope this email finds you well.
 
 I need your advice with something if you can help out.
 
 I have an RC serer (selenium rc) which is running on a centos 5.2 and
 another on a 5.4 machine.
 if i run it through X server, in other words if i run the server while
 connected to VNC.
 it works fine.
 but if i run it through ssh, it will start normally though upon test
 execution it will fail with the following error:
 
 
 11:05:01.571 INFO - Preparing Firefox profile...
 Error: no display specified
 11:05:21.818 ERROR - Failed to start new browser session, shutdown
 browser and clear all session data
 java.lang.RuntimeException: Timed out waiting for profile to be created!
  
 11:05:21.833 INFO - Got result: Failed to start new browser session:
 Error while launching browser on session null
 
 
 any idea how i can solve this?
 
 Thanks,
 
 --Roland

Like the error says, you need to specify the display.  I.e., on the
remote machine you must set the environmental variable DISPLAY...
something like

(export DISPLAY=192.168.1.42:0.0  firefox)

Though this may work, this may well reveal another, different error, one
having to do generally with permissions.  But we'll take them one at a time.

hth.
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

[CentOS] finding the right serial port, enabling configuring it [was: Re: fax software]

2011-03-28 Thread ken

On 03/28/2011 05:59 AM Adam Tauno Williams wrote:
 On Sun, 2011-03-27 at 22:41 -0400, ken wrote:
 It's been many years, but it seems that I have to receive a fax and
 might have to send one too.  Is there a way to do this on CentOS 5.5?
 (Hope so.)
 
 Hylafax;  has been quietly running at work, without incident, for years.
 http://www.hylafax.org/content/Main_Page

Thanks everyone for your suggestions.  I remember both of these packages
from years ago-- the last time I set up a fax.  At that time I bought an
internal modem-- not a Winmodem, one with jumpers on it to set the com
port and I believe the interrupt also.  Now, however, I'm working on a
laptop with a serial chip on the mainboard and it's a different story.

I've been reading the Serial-HOWTO, but it's a huge doc and I hope I
don't need to read this entire monograph to get the serial port set up
for the modem so that the fax software can use it.

I've run minicom to see if I can dial out with it-- to test if I have
the modem's serial port enabled and configured properly.  So far, no
joy.  Anyone have tips to set up the modem so that efax or (more likely)
hylafax can use it?

Much appreciated.

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Failed to start new browser session: Error while launching browser on session null

On 3/28/2011 2:31 PM, ken wrote:

 I need your advice with something if you can help out.

 I have an RC serer (selenium rc) which is running on a centos 5.2 and
 another on a 5.4 machine.
 if i run it through X server, in other words if i run the server while
 connected to VNC.
 it works fine.
 but if i run it through ssh, it will start normally though upon test
 execution it will fail with the following error:


 11:05:01.571 INFO - Preparing Firefox profile...
 Error: no display specified
 11:05:21.818 ERROR - Failed to start new browser session, shutdown
 browser and clear all session data
 java.lang.RuntimeException: Timed out waiting for profile to be created!

 11:05:21.833 INFO - Got result: Failed to start new browser session:
 Error while launching browser on session null


 any idea how i can solve this?

 Thanks,

 --Roland

 Like the error says, you need to specify the display.  I.e., on the
 remote machine you must set the environmental variable DISPLAY...
 something like

 (export DISPLAY=192.168.1.42:0.0  firefox)

 Though this may work, this may well reveal another, different error, one
 having to do generally with permissions.  But we'll take them one at a time.

Ssh should take care of exporting the correct tunneled DISPLAY if you 
specified the -Y option when connecting.  However, with firefox you have 
to be careful that the same user does not already have a copy displaying 
elsewhere.  If so, it will try to open a new window in that session 
instead of starting a new one.  I don't think that's the problem in this 
case or you wouldn't get the 'no display' error, but when it does happen 
it can be confusing.

-- 
   Les Mikesell
lesmikes...@gmail.com


___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Failed to start new browser session: Error while launching browser on session null

Les Mikesell wrote:
 On 3/28/2011 2:31 PM, ken wrote:

 I need your advice with something if you can help out.

 I have an RC serer (selenium rc) which is running on a centos 5.2 and
 another on a 5.4 machine.
 if i run it through X server, in other words if i run the server while
 connected to VNC. it works fine.
 but if i run it through ssh, it will start normally though upon test
 execution it will fail with the following error:

 11:05:01.571 INFO - Preparing Firefox profile...
 Error: no display specified
 11:05:21.818 ERROR - Failed to start new browser session, shutdown
 browser and clear all session data
 java.lang.RuntimeException: Timed out waiting for profile to be
 created!

 11:05:21.833 INFO - Got result: Failed to start new browser session:
 Error while launching browser on session null
snip
Two things: first, I assume X is running. Second, did you ssh in with ssh -X?

  mark

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] finding the right serial port, enabling configuring it [was: Re: fax software]

On 3/28/2011 2:53 PM, ken wrote:

 It's been many years, but it seems that I have to receive a fax and
 might have to send one too.  Is there a way to do this on CentOS 5.5?
 (Hope so.)

 Hylafax;  has been quietly running at work, without incident, for years.
 http://www.hylafax.org/content/Main_Page

 Thanks everyone for your suggestions.  I remember both of these packages
 from years ago-- the last time I set up a fax.  At that time I bought an
 internal modem-- not a Winmodem, one with jumpers on it to set the com
 port and I believe the interrupt also.  Now, however, I'm working on a
 laptop with a serial chip on the mainboard and it's a different story.

 I've been reading the Serial-HOWTO, but it's a huge doc and I hope I
 don't need to read this entire monograph to get the serial port set up
 for the modem so that the fax software can use it.

 I've run minicom to see if I can dial out with it-- to test if I have
 the modem's serial port enabled and configured properly.  So far, no
 joy.  Anyone have tips to set up the modem so that efax or (more likely)
 hylafax can use it?

I've forgotten most of what I knew about serial ports (and hope to keep 
it that way...) but chances are that the motherboard ports are 
/dev/ttyS0 or /dev/ttyS1 and hylafax should be able to do its own 
initialization.  I've always used ckermit to poke around and do manual 
things to serial ports because after the 'set line device_name' you can 
'set carrier off' to keep from locking up when the modem doesn't have 
carrier yet.  I think I had to rebuild a src rpm from somewhere for 
Centos5, though.  It has an odd license and isn't in the distro any more 
even though the license does explicitly permit that.

-- 
   Les Mikesell
lesmikes...@gmail.com



___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] finding the right serial port, enabling configuring it [was: Re: fax software]

2011-03-28 Thread Robert Heller

At Mon, 28 Mar 2011 15:53:50 -0400 CentOS mailing list centos@centos.org 
wrote:

 
 On 03/28/2011 05:59 AM Adam Tauno Williams wrote:
  On Sun, 2011-03-27 at 22:41 -0400, ken wrote:
  It's been many years, but it seems that I have to receive a fax and
  might have to send one too.  Is there a way to do this on CentOS 5.5?
  (Hope so.)
  
  Hylafax;  has been quietly running at work, without incident, for years.
  http://www.hylafax.org/content/Main_Page
 
 Thanks everyone for your suggestions.  I remember both of these packages
 from years ago-- the last time I set up a fax.  At that time I bought an
 internal modem-- not a Winmodem, one with jumpers on it to set the com
 port and I believe the interrupt also.  Now, however, I'm working on a
 laptop with a serial chip on the mainboard and it's a different story.

Is this an RS232 port connected to an external modem or is it some sort
of internal modem?

 
 I've been reading the Serial-HOWTO, but it's a huge doc and I hope I
 don't need to read this entire monograph to get the serial port set up
 for the modem so that the fax software can use it.
 
 I've run minicom to see if I can dial out with it-- to test if I have
 the modem's serial port enabled and configured properly.  So far, no
 joy.  Anyone have tips to set up the modem so that efax or (more likely)
 hylafax can use it?

Almost all *internal* modems (esp. on laptops) are Winmodems and are
thus pretty close to useless under Linux.  It might be easier / cheaper
/ less agravating to just go down to Best Buy and buy a Creative
Blaster analog RS232 serial modem.  Something like $50US.  Note: most
newer laptops don't have an external RS232 connection, so you will need
to get a USB=RS232 adapter, most of which work out-of-the-box under
Linux. (Don't get a USB connected analog modem -- most of these are
Winmodems or something equally odd.)

Otherwise, what does:

/bin/setserial -g /dev/ttyS*

display?

(You might need to be root to do this:

sudo /bin/setserial -g /dev/ttyS*

)

For example my IBM Thinkpad X31 gives this:

gollum.deepsoft.com% sudo /bin/setserial -g /dev/ttyS*
/dev/ttyS0, UART: undefined, Port: 0x03f8, IRQ: 4
/dev/ttyS1, UART: unknown, Port: 0x02f8, IRQ: 3
/dev/ttyS2, UART: unknown, Port: 0x03e8, IRQ: 4
/dev/ttyS3, UART: unknown, Port: 0x02e8, IRQ: 3

I think /dev/ttyS0 is the IR port, which I don't use.  The Winmodem does
not show up as a /dev/ttyS* port, since it is not really a serial port
at all.

 
 Much appreciated.
 
 ___
 CentOS mailing list
 CentOS@centos.org
 http://lists.centos.org/mailman/listinfo/centos
 
 

-- 
Robert Heller -- 978-544-6933 / hel...@deepsoft.com
Deepwoods Software-- http://www.deepsoft.com/
()  ascii ribbon campaign -- against html e-mail
/\  www.asciiribbon.org   -- against proprietary attachments



 
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

[CentOS] centos server network speed check???

2011-03-28 Thread mcclnx mcc

we have several servers on same rack and servers are all inside firewall.  
Centos version from 4.X to 5.X.  sometime the connection are very slow (compare 
to servers on other racks also inside firewall).

we discuss with network engineer he ask us use ping and traceroute to check. 
 Both tools response time are good but if we connect through application like 
Web browser, database, or DELL OPMN tool.  The response time is very very slow. 
 

This situation normally last 4 to 5 hours then it back to normal.  Does there 
has way to check real network response time so we can show to network 
engineer.  Otherwise they always say no problem.

Thanks.


  
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Virtualization platform choice

2011-03-28 Thread Warren Young

On 3/27/2011 3:07 PM, Jure Pečar wrote:

 It's interesting that nobody so far mentioned openVZ

I wouldn't use it since being bitten by its lack of swap support.

I run a couple of web sites on a fairly heavy web stack which loads up 
a bunch of dependencies that don't actually end up being used by my 
site, but because there is no swap, all that unused code eats real RAM.

Because of that, I had to upgrade to a 512 MB VPS hosting plan from a 
256 MB plan.  My sites initially ran just fine under the 256 MB plan but 
after adding just one feature to my sites which used one of the piggier 
features in the web stack, it pushed me over the limit and I had to 
upgrade.  If the VPS could use swap, I'm sure enough of the web stack 
would remain swapped out that I could have continued using the 256 MB plan.

My VPS provider may find OpenVZ to be efficient than Xen, but it cost me 
about 50% more in hosting fees.  That's less efficient in my book.
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

[CentOS] check memory configuration

2011-03-28 Thread William Warren

What's there way to do this?  AKA is there a proc command that will show 
me what chips i have installed in a server without having to crack the 
case?  Just a general pointer is fine..:)
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] check memory configuration

2011-03-28 Thread Stephen Harris

On Mon, Mar 28, 2011 at 05:27:08PM -0400, William Warren wrote:
 What's there way to do this?  AKA is there a proc command that will show 
 me what chips i have installed in a server without having to crack the 
 case?  Just a general pointer is fine..:)

dmidecode


-- 

rgds
Stephen
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] check memory configuration

William Warren wrote:
 What's there way to do this?  AKA is there a proc command that will show
 me what chips i have installed in a server without having to crack the
 case?  Just a general pointer is fine..:)

lshw, dmidecode, cat'ing files in /proc

   mark

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] check memory configuration

2011-03-28 Thread William Warren

On 3/28/2011 5:29 PM, m.r...@5-cent.us wrote:
 William Warren wrote:
 What's there way to do this?  AKA is there a proc command that will show
 me what chips i have installed in a server without having to crack the
 case?  Just a general pointer is fine..:)
 lshw, dmidecode, cat'ing files in /proc

 mark

 ___
 CentOS mailing list
 CentOS@centos.org
 http://lists.centos.org/mailman/listinfo/centos
that lshw gave me the pointer i needed..thanks to all who answered..:)
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos server network speed check???

2011-03-28 Thread Peter Larsen

On Tue, 2011-03-29 at 05:13 +0800, mcclnx mcc wrote:
 we have several servers on same rack and servers are all inside firewall.  
 Centos version from 4.X to 5.X.  sometime the connection are very slow 
 (compare to servers on other racks also inside firewall).
 
 we discuss with network engineer he ask us use ping and traceroute to 
 check.  Both tools response time are good but if we connect through 
 application like Web browser, database, or DELL OPMN tool.  The response time 
 is very very slow.  
 
 This situation normally last 4 to 5 hours then it back to normal.  Does there 
 has way to check real network response time so we can show to network 
 engineer.  Otherwise they always say no problem.

miitool and ethtool 

Check that you're running at the right speed; sometimes bad cables will
make the negotiation go bad. Sometimes you just connect to the wrong
switch port. You may also note if the switch has hard-set values about
the negotiation such as duplex settings. Make sure they match on both
ends. You should be full duplex unless there's a very very good network
reason not to. 

Lastly, check ifconfig output. Make sure there's no errors reported. If
you have a high error count, it's a good bet the cable is bad or the
sync settings are wrong.

-- 
Best Regards
  Peter Larsen

Wise words of the day:
Showing up is 80% of life.
-- Woody Allen


signature.asc
Description: This is a digitally signed message part
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Virtualization platform choice

2011-03-28 Thread Andres Toomsalu

Please also consider OpenNode - http://opennode.activesys.org  - a CentOS based 
KVM full virtualization + OpenVZ linux containers solution. Supports VM 
templating and live migration, etc - with easy bare metal setup.

Cheers,
-- 
--
Andres Toomsalu, and...@active.ee







On 27.03.2011, at 12:57, Jussi Hirvi wrote:

 Some may be bored with the subject - sorry...
 
 Still not decided about virtualization platform for my webhotel v2 
 (ns, mail, web servers, etc.).
 
 KVM would be a natural way to go, I suppose, only it is too bad CentOS 6 
 will not be out in time for me - I guess KVM would be more mature in 
 CentOS 6.
 
 Any experience with the free VMware vSphere Hypervisor?. (It was 
 formerly known as VMware ESXi Single Server or free ESXi.)
 
 http://www.vmware.com/products/vsphere-hypervisor/overview.html
 
 I would need a tutorial about that... For example, does that run without 
 a host OS? Can it be managed only via Win clients? Issues with CentOS 
 4/5 guests (all my systems are currently CentOS 4/5).
 
 - Jussi
 
 -- 
 Jussi Hirvi * Green Spot
 Topeliuksenkatu 15 C * 00250 Helsinki * Finland
 Tel. +358 9 493 981 * Mobile +358 40 771 2098 (only sms)
 jussi.hi...@greenspot.fi * http://www.greenspot.fi
 ___
 CentOS mailing list
 CentOS@centos.org
 http://lists.centos.org/mailman/listinfo/centos
 

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos server network speed check???

2011-03-28 Thread Emmanuel Noobadmin

On 3/29/11, mcclnx mcc mcc...@yahoo.com.tw wrote:
 we have several servers on same rack and servers are all inside firewall.
 Centos version from 4.X to 5.X.  sometime the connection are very slow
 (compare to servers on other racks also inside firewall).

 we discuss with network engineer he ask us use ping and traceroute to
 check.  Both tools response time are good but if we connect through
 application like Web browser, database, or DELL OPMN tool.  The response
 time is very very slow.

Are you connecting to the servers from within the same
network/building or via Internet?

If the ping times are good, it could be the servers are too heavily
loaded, whether due to too many users or inefficient applications. So
they would respond very slowly to requests although there is no
network problem.
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos server network speed check???

2011-03-28 Thread Brian Mathis

On Mon, Mar 28, 2011 at 5:13 PM, mcclnx mcc mcc...@yahoo.com.tw wrote:
 we have several servers on same rack and servers are all inside firewall.  
 Centos version from 4.X to 5.X.  sometime the connection are very slow 
 (compare to servers on other racks also inside firewall).

 we discuss with network engineer he ask us use ping and traceroute to 
 check.  Both tools response time are good but if we connect through 
 application like Web browser, database, or DELL OPMN tool.  The response time 
 is very very slow.

 This situation normally last 4 to 5 hours then it back to normal.  Does there 
 has way to check real network response time so we can show to network 
 engineer.  Otherwise they always say no problem.

 Thanks.


If you run 'iperf' between the 2 servers you will be able to check the
bandwidth at that time.  It could be that you have another application
using all the bandwidth, or the network has slowed down for some other
reason.  you could also try using Cacti to monitor the bandwidth
through the switch.

Also install the sysstat package on all servers and let it run every
minute.  You can graph the data using ksar on your local system.  The
graphs may show you that something else is going on.

Check the crontabs as well.  Does the time window line up with when
you are running backups or something else over the network?

Ping an traceroute are going to be mostly useless for this problem.
They can help determine connectivity, but even a 56k modem can be
connected and pass.  Iperf will stress the bandwidth portion of the
equation.
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

Mark Tomandl wrote:

 Where is your local mirror?
 As I said, I couldn't see them on any of the mirrors offered to me.

 The kernel.org mirror system has servers in the EU and has the DVDs.
  From the link below choose your architecture, download and verify the
 iso files, and you should be good to go.
 http://mirrors.eu.kernel.org/centos/5/isos/

Thank you.
I am downloading it now.

However, when I go to www.centos.org and click on 
Downloads=Mirrors=CentOS-5 ISOs=x86_64 
I am offered 19 mirrors.
I haven't tried them all, but I've tried those in the UK and some others
(8 in all) and none of them have the DVD ISOs.


-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Corporate support for CentOS

2011-03-28 Thread Scott Silva

on 3/27/2011 5:36 AM Ian Murray spake the following:
 
 

 What makes you think CentOS is not willing to be commercially sponsored?
 (Or only work developing CentOS?)

 I would LOVE to be able to do CentOS as my only job.

 No one that we know of is willing to pay a full time salary for 1 or 2
 or 3 people to develop CentOS.  If they would pay for it, we would
 likely do it.

 They might be willing for us to let their current employees do some
 CentOS things ... but not willing to pay for CentOS development.
 
 
 Sorry, that was just my impression from previous posts. I guess I have that 
 wrong. Maybe I am confusing the reluctance to take donations at the moment 
 with commercial sponsorship. Thanks for correcting me.
 
 Couple of questions, then
 
 What is the average current time commitment per week, i.e. man hours that is 
 currently volunteered by the core developers?
 
 What would that need to increase to, to significantly reduce release times 
 (which I think was the overall goal)?
 
 What would the *market rate* be for the skills required? Just to give a rough 
 figure to work with and shouldn't be related to any particular person's 
 current day job.
 
 Thanks in advance,
 
 Ian.
 
 
   
A good linux sysadmin in the US makes from 60K to 80K USD a year... High level
programmers a bit more... So with benefits, and other support costs... How
about a half million to three quarters of a million a year to commercialize
CentOS... In US dollars... Get your checkbook out...

Anyone know someone who can front at least 2 years working capital to get
started and productive?

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Corporate support for CentOS

Anyone know someone who can front at least 2 years working capital to get
started and productive?

From a pure business standpoint, it would be near impossible to pull off. No 
one is going to pony up $2,000,000 to start CentOS up as a for-profit company. 
Aside from the small point that you would be competing with RedHat using its 
own product, think about it in simple financial terms...let's say we charged 
each licensee $200/year /machine (and yes at that price we would be competing 
with RH directly). We would have to sell 5,000 licenses a year just to break 
even. Bring the price point down to take into account the fact that most users 
of CentOS can't afford $200/month (or they would probably be using RHEL 
now..), and your number of conversions goes up exponentially to make up for 
the low sticker price. Aside from that inconvenient truth, also consider that 
CentOS does not produce unique products that are protected in any 
way/shape/form, there is no way to protect the investment or the business from 
disappearing overnight.
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] Corporate support for CentOS

$200/month = $200/year
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] cobbler installation of CentOS-5.5

2011-03-28 Thread Phil Schaffner

Timothy Murphy wrote on 03/28/2011 07:24 PM:
 However, when I go towww.centos.org  and click on
 Downloads=Mirrors=CentOS-5 ISOs=x86_64

Go to

Downloads / Mirrors / Mirror List

And look at the column headed Direct DVD Downloads.

Phil

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos server network speed check???

2011-03-28 Thread mcclnx mcc

To answer your questios:

1. network is Intranet not internet.

2. servers CPU and I/O are very light.  We did use sar -u and sar -b to 
check.  

3. is NOT only one server has this network slow problem.  at least 4 to 5 
servers on that rack all report slow.  it is NOT possible all servers on that 
rack are all heavy load.


--- 11/3/28 (一)，Emmanuel Noobadmin centos.ad...@gmail.com 寫道：

 寄件者: Emmanuel Noobadmin centos.ad...@gmail.com
 主旨: Re: [CentOS] centos server network speed check???
 收件者: CentOS mailing list centos@centos.org
 日期: 2011年3月28日,一,下午5:45
 On 3/29/11, mcclnx mcc mcc...@yahoo.com.tw
 wrote:
  we have several servers on same rack and servers are
 all inside firewall.
  Centos version from 4.X to 5.X.  sometime the
 connection are very slow
  (compare to servers on other racks also inside
 firewall).
 
  we discuss with network engineer he ask us use ping
 and traceroute to
  check.  Both tools response time are good but if
 we connect through
  application like Web browser, database, or DELL OPMN
 tool.  The response
  time is very very slow.
 
 Are you connecting to the servers from within the same
 network/building or via Internet?
 
 If the ping times are good, it could be the servers are too
 heavily
 loaded, whether due to too many users or inefficient
 applications. So
 they would respond very slowly to requests although there
 is no
 network problem.
 ___
 CentOS mailing list
 CentOS@centos.org
 http://lists.centos.org/mailman/listinfo/centos
 


  
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos server network speed check???

2011-03-28 Thread mcclnx mcc

I don't think it is cable problem.  The reason are:

1. it happen every 3 to 4 weeks once.

2. problem last 4 to 5 hours then back to normal.

3. not one server has this problem, several servers on that rack all have 
problem at same time.



--- 11/3/28 (一)，Peter Larsen plar...@famlarsen.homelinux.com 寫道：

 寄件者: Peter Larsen plar...@famlarsen.homelinux.com
 主旨: Re: [CentOS] centos server network speed check???
 收件者: centos@centos.org
 日期: 2011年3月28日,一,下午5:41
 On Tue, 2011-03-29 at 05:13 +0800,
 mcclnx mcc wrote:
  we have several servers on same rack and servers are
 all inside firewall.  Centos version from 4.X to
 5.X.  sometime the connection are very slow (compare to
 servers on other racks also inside firewall).
  
  we discuss with network engineer he ask us use ping
 and traceroute to check.  Both tools response time are
 good but if we connect through application like Web browser,
 database, or DELL OPMN tool.  The response time is very
 very slow.  
  
  This situation normally last 4 to 5 hours then it back
 to normal.  Does there has way to check real network
 response time so we can show to network engineer. 
 Otherwise they always say no problem.
 
 miitool and ethtool 
 
 Check that you're running at the right speed; sometimes bad
 cables will
 make the negotiation go bad. Sometimes you just connect to
 the wrong
 switch port. You may also note if the switch has hard-set
 values about
 the negotiation such as duplex settings. Make sure they
 match on both
 ends. You should be full duplex unless there's a very very
 good network
 reason not to. 
 
 Lastly, check ifconfig output. Make sure there's no errors
 reported. If
 you have a high error count, it's a good bet the cable is
 bad or the
 sync settings are wrong.
 
 -- 
 Best Regards
   Peter Larsen
 
 Wise words of the day:
 Showing up is 80% of life.
         -- Woody Allen
 
 -內含下列夾帶檔案-
 
 ___
 CentOS mailing list
 CentOS@centos.org
 http://lists.centos.org/mailman/listinfo/centos
 


  
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos server network speed check???

2011-03-28 Thread Alex Marz

This may seem overly obvious, but have you simply run a netstat while the 
slowdown occurs to see what the box(es) are doing at that point in time?


Alex  


On 2011-03-28, at 6:32 PM, mcclnx mcc wrote:

 I don't think it is cable problem.  The reason are:
 
 1. it happen every 3 to 4 weeks once.
 
 2. problem last 4 to 5 hours then back to normal.
 
 3. not one server has this problem, several servers on that rack all have 
 problem at same time.
 
 
 
 --- 11/3/28 (一)，Peter Larsen plar...@famlarsen.homelinux.com 寫道：
 
 寄件者: Peter Larsen plar...@famlarsen.homelinux.com
 主旨: Re: [CentOS] centos server network speed check???
 收件者: centos@centos.org
 日期: 2011年3月28日,一,下午5:41
 On Tue, 2011-03-29 at 05:13 +0800,
 mcclnx mcc wrote:
 we have several servers on same rack and servers are
 all inside firewall.  Centos version from 4.X to
 5.X.  sometime the connection are very slow (compare to
 servers on other racks also inside firewall).
 
 we discuss with network engineer he ask us use ping
 and traceroute to check.  Both tools response time are
 good but if we connect through application like Web browser,
 database, or DELL OPMN tool.  The response time is very
 very slow.  
 
 This situation normally last 4 to 5 hours then it back
 to normal.  Does there has way to check real network
 response time so we can show to network engineer. 
 Otherwise they always say no problem.
 
 miitool and ethtool 
 
 Check that you're running at the right speed; sometimes bad
 cables will
 make the negotiation go bad. Sometimes you just connect to
 the wrong
 switch port. You may also note if the switch has hard-set
 values about
 the negotiation such as duplex settings. Make sure they
 match on both
 ends. You should be full duplex unless there's a very very
 good network
 reason not to. 
 
 Lastly, check ifconfig output. Make sure there's no errors
 reported. If
 you have a high error count, it's a good bet the cable is
 bad or the
 sync settings are wrong.
 
 -- 
 Best Regards
   Peter Larsen
 
 Wise words of the day:
 Showing up is 80% of life.
 -- Woody Allen
 
 -內含下列夾帶檔案-
 
 ___
 CentOS mailing list
 CentOS@centos.org
 http://lists.centos.org/mailman/listinfo/centos
 
 
 
 
 ___
 CentOS mailing list
 CentOS@centos.org
 http://lists.centos.org/mailman/listinfo/centos

___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] centos server network speed check???