To Open Multiple VM using Network Install (FTP, HTTP, NFS) in KVM

KVM is a virtualisation tool which allows to deploy virtual machines. In this article we will learn, how to install virtual machines using network installation from FTP, NFS and HTTP server.

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Mount the centos 7 installation dvd to your machine.

[root@linuxhelp ~]# blkid
/dev/sda1: UUID=" d60ac2f0-b83e-4cb2-9258-b36698044a98"  TYPE=" xfs" 
/dev/sda2: UUID=" 56594f7e-e6be-49fd-b0b3-2230651f1c3e"  TYPE=" swap" 
/dev/sda3: UUID=" 7345257f-cb24-4b27-a16c-0cfa1878df8e"  TYPE=" xfs" 
/dev/sr0: UUID=" 2014-07-06-17-32-07-00"  LABEL=" CentOS 7 x86_64"  TYPE=" iso9660"  PTTYPE=" dos" 
[root@linuxhelp ~]# mount /dev/sr0 /mnt/dvd
mount: /dev/sr0 is write-protected, mounting read-only
[root@linuxhelp ~]# ls /mnt/dvd
CentOS_BuildTag  EULA  images    LiveOS    repodata              RPM-GPG-KEY-CentOS-Testing-7
EFI              GPL   isolinux  Packages  RPM-GPG-KEY-CentOS-7  TRANS.TBL

Network Installation using FTP Server

To set up FTP server we need to install the following package.

[root@linuxhelp ~]# yum install vsftpd -y
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
-->  Running transaction check
--->  Package vsftpd.x86_64 0:3.0.2-9.el7 will be installed
-->  Finished Dependency Resolution
.
.
.
Installed:
  vsftpd.x86_64 0:3.0.2-9.el7                                                                                                               

Complete!

Create a new directory in /var/ftp/pub to share the files for the installation via ftp server, and copy the contents from the dvd to the newly created directory.

[root@linuxhelp ~]# mkdir /var/ftp/pub/centos7
[root@linuxhelp ~]# cp -r /mnt/dvd/* /var/ftp/pub/centos7/

Next start and enable the ftp services.

[root@linuxhelp ~]# systemctl start vsftpd
[root@linuxhelp ~]# systemctl enable vsftpd
ln -s ' /usr/lib/systemd/system/vsftpd.service'  ' /etc/systemd/system/multi-user.target.wants/vsftpd.service'

Allow the firewall rule as follows.

[root@linuxhelp ~]# firewall-cmd --permanent --add-service=ftp
success
[root@linuxhelp ~]# firewall-cmd --reload
success

Now we have successfully configured the ftp server.

Click “ Applications” in the menu bar and choose System tools &rarr Virtual machine manager. Or run “ virt-manager” command on your terminal.

Click the icon to create New Virtual Machine.
KVM-virtualisation-virtual-machines-virt-manager

Enter a Name for the virtual machine and choose network install to install it from network resource.
KVM-virtualisation-virtual-machines-network-resource

Enter URL for the installation packages located in ftp path and click “ Forward” .
KVM-virtualisation-virtual-machines-Forward

Now choose your hardware requirement for the virtual machine like RAM, CPU and Hard Drive.
KVM-virtualisation-virtual-machines-hardware-requirement

Start the normal installation of Operating Systems as follows.
KVM-virtualisation-virtual-machines-normal-installation

After Reboot, your virtual machine is ready to use.

Network Installation using NFS Server

To set up NFS server, we need to install the following packages.

[root@linuxhelp ~]# yum install nfs* -y
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
-->  Running transaction check
--->  Package nfs-utils.x86_64 1:1.3.0-0.el7 will be installed
--->  Package nfs4-acl-tools.x86_64 0:0.3.3-13.el7 will be installed
.
.
.
python-paste.noarch 0:1.7.5.1-9.20111221hg1498.el7               
  python-tempita.noarch 0:0.5.1-6.el7                                     t1lib.x86_64 0:5.1.2-14.el7                                      
  texlive-base.noarch 2:2012-32.20130427_r30134.el7                       texlive-dvipng.noarch 2:svn26689.1.14-32.el7                     
  texlive-dvipng-bin.x86_64 2:svn26509.0-32.20130427_r30134.el7           texlive-kpathsea.noarch 2:svn28792.0-32.el7                      
  texlive-kpathsea-bin.x86_64 2:svn27347.0-32.20130427_r30134.el7         texlive-kpathsea-lib.x86_64 2:2012-32.20130427_r30134.el7        

Complete!

Create a New directory to share NFS server for the installation of centos 7 in KVM and then copy the DVD contents into the nfs share directory.

[root@linuxhelp ~]# mkdir /centos7
[root@linuxhelp ~]# cp -r /mnt/dvd/* /centos7

Change the ownership and set permission for the nfs share directory.

[root@linuxhelp ~]# chown nfsnobody: /centos7
[root@linuxhelp ~]# chmod 755 /centos7

Export the NFS share by creating entry in /etc/exports file as follows.

[root@linuxhelp ~]# vim /etc/exports

Add the following Entry.

/centos7    *(ro,insecure,no_root_squash)

To update the NFS share to kernel, run the following command.

[root@linuxhelp ~]# exportfs -arv
exporting *:/centos7

Start and enable the nfs services.

[root@linuxhelp ~]# systemctl start nfs-server
[root@linuxhelp ~]# systemctl enable nfs-server
ln -s ' /usr/lib/systemd/system/nfs-server.service'  ' /etc/systemd/system/nfs.target.wants/nfs-server.service'

Allow the firewall rule for nfs as follows.

[root@linuxhelp ~]# firewall-cmd --permanent --add-service=nfs
success
[root@linuxhelp ~]# firewall-cmd --reload
success

Now we successfully configured the NFS server.

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Open the Virtual machine manager and Click the icon to create New Virtual Machine.
KVM-virtualisation-virtual-machines-open-manager

Type a Name for the virtual machine and choose network install to install it from the network resource.
KVM-virtualisation-virtual-machines-network-install
Enter URL for the installation packages located in NFS path and click “ Forward” .

Choose your hardware requirement for your virtual machine like RAM, CPU and Hard Drive.
KVM-virtualisation-virtual-machines-ram-cpu

KVM-virtualisation-virtual-machines-disk-image

Then click Finish.

KVM-virtualisation-virtual-machines-vm-Finish

Continue with the standard installation for Operating Systems as follows.
KVM-virtualisation-virtual-machines-installation

KVM-virtualisation-virtual-machines-localization

KVM-virtualisation-virtual-machines-settings

KVM-virtualisation-virtual-machines-centos-config

After Reboot, the virtual machine is ready to use.

Network Installation using HTTP Server

To set up HTTP server we need to install the following package.

[root@linuxhelp ~]# yum install httpd -y
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Resolving Dependencies
-->  Running transaction check
--->  Package httpd.x86_64 0:2.4.6-17.el7.centos.1 will be installed
-->  Finished Dependency Resolution
.
.
.
Installed:
  httpd.x86_64 0:2.4.6-17.el7.centos.1                                                                                                      

Complete!

Create a new directory under the default document root and copy the files for the installation of VM in KVM

[root@linuxhelp ~]# mkdir /var/www/html/centos
[root@linuxhelp ~]# cp -r /mnt/dvd/* /var/www/html/centos/

Now start and enable the service for http server.

[root@linuxhelp ~]# systemctl start httpd
[root@linuxhelp ~]# systemctl enable httpd
ln -s ' /usr/lib/systemd/system/httpd.service'  ' /etc/systemd/system/multi-user.target.wants/httpd.service'

And allow the firewall rule for http as follows.

[root@linuxhelp ~]# firewall-cmd --permanent --add-service=http
success
[root@linuxhelp ~]# firewall-cmd --reload
success

Now we have successfully configured the HTTP server.

Open the Virtual machine manager and Click the create New Virtual Machine.
KVM-virtualisation-virtual-machines-vm-manager

Enter the Name for the virtual machine and choose network install to install it from network resource.
KVM-virtualisation-virtual-machines-network-resource

Enter URL for the installation packages located in HTTP path and click “ Forward” .
KVM-virtualisation-virtual-machines-http-path

Choose your hardware requirement for your virtual machine like RAM, CPU and Hard Drive.
KVM-virtualisation-virtual-machines-choose-memory

And finally click Finish
KVM-virtualisation-virtual-machines-finish

Continue the standard installation for Operating Systems as follows.
KVM-virtualisation-virtual-machines-welcome-page

After Reboot your virtual machine is ready to use.

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