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?
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.
- Is there any advantage is using the 64-bit CentOS rather than
32-bit?
- 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
- 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
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.
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.
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
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.
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
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
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.
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.
- 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>
- 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>
- 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
m.roth@5-cent.us wrote:
- 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.
Am 28.03.2011 um 17:37 schrieb Timothy Murphy:
m.roth@5-cent.us wrote:
- 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
Timothy Murphy wrote:
m.roth@5-cent.us wrote:
- 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
At Mon, 28 Mar 2011 16:37:33 +0100 CentOS mailing list centos@centos.org wrote:
m.roth@5-cent.us wrote:
- 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.
On Monday 28 March 2011 16:37:33 Timothy Murphy wrote:
m.roth@5-cent.us wrote:
- 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.
You could try your local mirror ;-)
ftp.heanet.ie:/pub/centos/5.5/isos/i386/CentOS-5.5-i386-bin-DVD.iso
or ftp.heanet.ie:/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-DVD-1of2.iso and ftp.heanet.ie:/pub/centos/5.5/isos/x86_64/CentOS-5.5-x86_64-bin-DVD-2of2.iso
Tony
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.
Tony Molloy wrote:
You could try your local mirror ;-)
ftp.heanet.ie:/pub/centos/5.5/isos/i386/CentOS-5.5-i386-bin-DVD.iso
I did find that later.
For some reason it is not given (no site in Ireland is given) in the list of local mirrors which I get if I follow the links in the title bar from http://www.centos.org Downloads=>Mirrors=>CentOS-5 ISOs=>x86_64
But not to worry - I have the DVD ISO now.
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.
- Is there any advantage is using the 64-bit CentOS
rather than 32-bit?
- 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
- 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 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"?
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.
Sometimes the path of least resistance is best, spend $40 on a USB DVD and call it a day.
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
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
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.
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.
- 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
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.
- 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.
- 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.
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.
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.
On Mon, Mar 28, 2011 at 2:47 PM, Timothy Murphy gayleard@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
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/
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.
Phil Schaffner wrote:
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".
Thanks, I do see that now. However, it is far from obvious. Also, for some reason heanet.ie which is listed there does not appear in the list of local repositories, which is what is given you if you follow the links in the title bar.
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.
Just to end the story. Having found the DVD ISO with the help of this newsgroup, I installed CentOS-5.5 on my HP micro-server using cobbler, with no trouble at all.
But I was surprised to find that this had deleted the partitioning which I had carefully installed with Fedora Live CD on a USB stick, and assigned the whole disk to LVM.
I looked on the web to see how I could modify ks.cfg to make a partition of my own choice, but decided after a brief study that life is too short to spend on the intricacies of kickstart.
So I have given up cobbler, and will try the netinstall CD next, installing it on a USB stick. If that doesn't work I shall put the CentOS Live CD on a stick, and install that on the hard disk.
--- On Fri, 4/1/11, Timothy Murphy gayleard@eircom.net wrote:
From: Timothy Murphy gayleard@eircom.net Subject: Re: [CentOS] cobbler installation of CentOS-5.5 To: centos@centos.org Date: Friday, April 1, 2011, 5:46 PM 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.
Just to end the story. Having found the DVD ISO with the help of this newsgroup, I installed CentOS-5.5 on my HP micro-server using cobbler, with no trouble at all.
But I was surprised to find that this had deleted the partitioning which I had carefully installed with Fedora Live CD on a USB stick, and assigned the whole disk to LVM.
I looked on the web to see how I could modify ks.cfg to make a partition of my own choice, but decided after a brief study that life is too short to spend on the intricacies of kickstart.
So I have given up cobbler, and will try the netinstall CD next, installing it on a USB stick. If that doesn't work I shall put the CentOS Live CD on a stick, and install that on the hard disk.
If all you want to do is kick-off an install via USB stick, you want
http://mirrors.kernel.org/centos/5.5/os/x86_64/images/diskboot.img
and use syslinux/memdisk to boot it on a vfat partition
------------- syslinux.cfg ------------ label c564 kernel memdisk append initrd=/diskboot.img --------- snip --------
you can dd the whole IMG to your stick, but its cleaner to collect such images and reference them in syslinux.cfg.
To setup your stick to boot #syslinux -s /dev/sda (unmounted USB disk)
Mark Pryor wrote:
I'm trying to install CentOS-5.5 on my new HP
micro-server,
which has no CD drive.
If all you want to do is kick-off an install via USB stick, you want
http://mirrors.kernel.org/centos/5.5/os/x86_64/images/diskboot.img
and use syslinux/memdisk to boot it on a vfat partition
------------- syslinux.cfg ------------ label c564 kernel memdisk append initrd=/diskboot.img --------- snip --------
you can dd the whole IMG to your stick, but its cleaner to collect such images and reference them in syslinux.cfg.
To setup your stick to bootZZ #syslinux -s /dev/sda (unmounted USB disk)
Thanks for the suggestion.
But would that be simpler than transferring netinstall.iso to a USB stick? (I've always found the syslinux documentation bizarre, with its frequent references to floppies.)
Timothy Murphy wrote:
you can dd the whole IMG to your stick, but its cleaner to collect such images and reference them in syslinux.cfg.
To setup your stick to bootZZ #syslinux -s /dev/sda (unmounted USB disk)
Thanks for the suggestion.
But would that be simpler than transferring netinstall.iso to a USB stick? (I've always found the syslinux documentation bizarre, with its frequent references to floppies.)
I tried following my own suggestion - transferring CentOS netinstall to a USB stick with liveusb-creator (on a Fedora-14 laptop). But to my surprise this failed with the error message ISO MD5 checksum verification failed
However, md5sum seemed to find the ISO OK: ========================================= [tim@blanche Documents]$ md5sum -c md5sum.txt.asc ... CentOS-5.5-x86_64-netinstall.iso: OK ========================================= sha1sum also finds it OK.
I tried downloading the ISO again, but the outcome was the same.
The ISO is very short - just 10MB. But it looks OK when I loop-mount it.
I wonder if anyone can cast light on this?
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David Brian Chait -
David Sommerseth -
Les Mikesell -
m.roth＠5-cent.us -
Mark Pryor -
Mark Tomandl -
Markus Falb -
Nataraj -
Phil Schaffner -
Rainer Duffner -
Ray Van Dolson -
Robert Heller -
Ryan Wagoner -
Timothy Murphy -
Tony Molloy