[SOLVED] Unable to install Linux(Centos) on virtual machine using virt-install --prompt

shazgaurav · 12-12-2013, 06:11 AM

Hello,

I was trying to install linux on virtual machine using iso image over ftp and http.Though both servers seem to work(Screenshots

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and

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) but I am persistently getting error where I suppose the kvm hypervisor is unable to locate that iso image over ftp or http(error in screenshots

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).I googled it for couple of days now but no luck.Since I am a newbie it would be a silly mistake on my side which I am unable to locate.Could someone please help me after seeing the screenshot.Please let me know in case you need any other info.Any help would be highly appericiated.

Thanks

druuna · 12-12-2013, 06:22 AM

Try adding a / at the end.

Code:

ftp://192.168.1.6/inst/

or

Code:

ftp://192.168.1.6/pub/

Wasn't thinking straight, see next answer.

ericson007 · 12-12-2013, 06:23 AM

If you are trying to do the install pulling files from ftp, you have to extract the files from the iso image first. The install does not know how to handle an iso file.

So mount the iso then copy the contents to the ftp server

druuna · 12-12-2013, 06:39 AM

Quote:

Originally Posted by ericson007

If you are trying to do the install pulling files from ftp, you have to extract the files from the iso image first. The install does not know how to handle an iso file.

So mount the iso then copy the contents to the ftp server

You might have a very good point there......

Madhu Desai · 12-12-2013, 08:44 AM

As ericson007 has already mentioned, if you want to install from remote source, you have to point to a directory where iso file is already extracted. CDROM and ISO file are only applicable for local source.

Also, you may want to create a disk prior to installing OS, because by default the image (img) created by KVM will be equal to the size you mentioned. For example, if want disk size of 100 GB, then image file will be actually 100GB. So create disk file first:

Code:

# qemu-img create -f qcow2 /var/lib/libvirt/images/testbox.qcow2 100G

Then you can install any OS with virt-install --prompt, and point to already created disk when asked.

Or, you can do the following (single step):

Code:

# virt-install --connect qemu:///system \
--name testbox --ram 1024 --vcpus 1 \
--disk path=/var/lib/libvirt/images/testbox.qcow2,format=qcow2,size=100 \
--network network=default \
--cdrom /var/ftp/pub/iso/centos65.iso \
--os-type linux --os-variant rhel6 \
--virt-type kvm --graphics vnc --hvm

OR

Code:

# virt-install --connect qemu:///system \
--name testbox --ram 1024 --vcpus 1 \
--disk path=/var/lib/libvirt/images/testbox.qcow2,format=qcow2,size=100 \
--network network=default \
--location ftp://192.168.1.74/pub/centos65
--os-type linux --os-variant rhel6 \
--virt-type kvm --graphics vnc --hvm

shazgaurav · 12-14-2013, 02:08 AM

I tried extracting iso image and placing files in respective folders,still the problem persists.Is there anyother configuration changes that I am missing?

shazgaurav · 12-14-2013, 02:11 AM

Here are the latest screenshots.

druuna · 12-14-2013, 03:21 AM

Quote:

Originally Posted by shazgaurav

I tried extracting iso image and placing files in respective folders,still the problem persists.Is there anyother configuration changes that I am missing?

Did you copy all the files from the ISO (including the dot files)? The dot files are important:

Code:

$ cd /path/to/mounted/iso/
cp -ar . /path/to/ftp_or_http/directory/

My RedHat installation files are available by both httpd and ftp and that does work:

Code:

# virt-install --prompt
What is the name of your virtual machine? test01
 How much RAM should be allocated (in megabytes)? 1024
 What would you like to use as the disk (file path)? /var/lib/libvirt/images/test01.img
 How large would you like the disk (/var/lib/libvirt/images/test01.img) to be (in gigabytes)? 10
 What is the install CD-ROM/ISO or URL? http://192.168.100.12:8064/

Starting install...
Retrieving file .treeinfo...                             | 3.2 kB     00:00 ... 
Retrieving file vmlinuz...                               | 7.7 MB     00:00 ... 
Retrieving file initrd.img...                            |  60 MB     00:00 ...

I can reach the files from the browser with the same URL (mine is listening on port 8064, that explains the :8064 part).

Using ftp:

Code:

 # virt-install --prompt
What is the name of your virtual machine? test02
 How much RAM should be allocated (in megabytes)? 1024
 What would you like to use as the disk (file path)? /var/lib/libvirt/images/test02.img
 How large would you like the disk (/var/lib/libvirt/images/test02.img) to be (in gigabytes)? 10
 What is the install CD-ROM/ISO or URL? ftp://192.168.100.12/pub/

Starting install...
Retrieving file .treeinfo...                             | 3.2 kB     00:00 ... 
Retrieving file vmlinuz...                               | 7.7 MB     00:00 ... 
Retrieving file initrd.img...                            |  60 MB     00:00 ...

ericson007 · 12-15-2013, 04:44 AM

If you copied the files over using root account the lables may be wrong.

Run

Code:

restorecon -Rv /ftp/folder

Also open port 21 on your firewall.

shazgaurav · 12-15-2013, 11:41 AM

Quote:

Originally Posted by druuna

Did you copy all the files from the ISO (including the dot files)? The dot files are important:

Code:

$ cd /path/to/mounted/iso/
cp -ar . /path/to/ftp_or_http/directory/

My RedHat installation files are available by both httpd and ftp and that does work:

Code:

# virt-install --prompt
What is the name of your virtual machine? test01
 How much RAM should be allocated (in megabytes)? 1024
 What would you like to use as the disk (file path)? /var/lib/libvirt/images/test01.img
 How large would you like the disk (/var/lib/libvirt/images/test01.img) to be (in gigabytes)? 10
 What is the install CD-ROM/ISO or URL? http://192.168.100.12:8064/

Starting install...
Retrieving file .treeinfo...                             | 3.2 kB     00:00 ... 
Retrieving file vmlinuz...                               | 7.7 MB     00:00 ... 
Retrieving file initrd.img...                            |  60 MB     00:00 ...

I can reach the files from the browser with the same URL (mine is listening on port 8064, that explains the :8064 part).

Using ftp:

Code:

 # virt-install --prompt
What is the name of your virtual machine? test02
 How much RAM should be allocated (in megabytes)? 1024
 What would you like to use as the disk (file path)? /var/lib/libvirt/images/test02.img
 How large would you like the disk (/var/lib/libvirt/images/test02.img) to be (in gigabytes)? 10
 What is the install CD-ROM/ISO or URL? ftp://192.168.100.12/pub/

Starting install...
Retrieving file .treeinfo...                             | 3.2 kB     00:00 ... 
Retrieving file vmlinuz...                               | 7.7 MB     00:00 ... 
Retrieving file initrd.img...                            |  60 MB     00:00 ...

Thank you so much.It works great.I was simply copying the files earlier.This is solved.Many thanks for reply