Merge "[image-guide] Convert fedora image to RST"
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=====================
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Example: Fedora image
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=====================
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Download a `Fedora <http://getfedora.org/>`_ ISO image.
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This procedure lets you create a Fedora 20 image.
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#. Start the installation using :command:`virt-install` as shown below:
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.. code-block:: console
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# qemu-img create -f qcow2 fedora-20.qcow2 8G
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# virt-install --connect=qemu:///system --network=bridge:virbr0 \
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--extra-args="console=tty0 console=ttyS0,115200 serial rd_NO_PLYMOUTH" \
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--name=fedora-20 --disk path=/var/lib/libvirt/images/fedora-20.qcow2,format=qcow2,size=10,cache=none \
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--ram 2048 --vcpus=2 --check-cpu --accelerate --os-type linux --os-variant fedora19 \
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--hvm --location=http://dl.fedoraproject.org/pub/fedora/linux/releases/20/Fedora/x86_64/os/ \
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--nographics
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This will launch a VM and start the installation process.
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.. code-block:: console
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Starting install...
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Retrieving file .treeinfo... | 2.2 kB 00:00:00 !!!
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Retrieving file vmlinuz... | 9.8 MB 00:00:05 !!!
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Retrieving file initrd.img... | 66 MB 00:00:37 !!!
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Allocating 'fedora-20.qcow2' | 10 GB 00:00:00
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Creating domain... | 0 B 00:00:00
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Connected to domain fedora-20
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Escape character is ^]
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[ 0.000000] Initializing cgroup subsys cpuset
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[ 0.000000] Initializing cgroup subsys cpu
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[ 0.000000] Initializing cgroup subsys cpuacct
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...
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...
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...
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[ OK ] Reached target Local File Systems (Pre).
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Starting installer, one moment...
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anaconda 20.25.15-1 for Fedora 20 started.
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========================================================================
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========================================================================
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#. Choose the VNC or text mode to set the installation options.
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.. code-block:: console
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Text mode provides a limited set of installation options.
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It does not offer custom partitioning for full control over the
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disk layout. Would you like to use VNC mode instead?
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1) Start VNC
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2) Use text mode
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Please make your choice from above ['q' to quit | 'c' to continue |
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'r' to refresh]:
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#. Set the timezone, network configuration, installation source,
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and the root password. Optionally, you can choose to create a user.
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#. Set up the installation destination as shown below:
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.. code-block:: console
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========================================================================
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Probing storage...
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Installation Destination
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[x] 1) Virtio Block Device: 10.24 GB (vda)
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1 disk selected; 10.24 GB capacity; 10.24 GB free ...
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Please make your choice from above ['q' to quit | 'c' to continue |
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'r' to refresh]: c
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========================================================================
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========================================================================
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Autopartitioning Options
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[ ] 1) Replace Existing Linux system(s)
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[x] 2) Use All Space
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[ ] 3) Use Free Space
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Installation requires partitioning of your hard drive. Select what space
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to use for the install target.
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Please make your choice from above ['q' to quit | 'c' to continue |
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'r' to refresh]: 2
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========================================================================
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========================================================================
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Autopartitioning Options
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[ ] 1) Replace Existing Linux system(s)
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[x] 2) Use All Space
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[ ] 3) Use Free Space
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Installation requires partitioning of your hard drive. Select what space
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to use for the install target.
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Please make your choice from above ['q' to quit | 'c' to continue |
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'r' to refresh]: c
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========================================================================
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========================================================================
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Partition Scheme Options
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[ ] 1) Standard Partition
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[x] 2) LVM
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[ ] 3) BTRFS
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Select a partition scheme configuration.
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Please make your choice from above ['q' to quit | 'c' to continue |
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'r' to refresh]: c
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Generating updated storage configuration
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Checking storage configuration...
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========================================================================
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#. Run the following commands from the host to eject the disk and
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reboot using :command:`virsh`, as root.
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.. code-block:: console
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# virsh attach-disk --type cdrom --mode readonly fedora-20 "" hdc
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# virsh destroy fedora-20
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# virsh start fedora-20
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You can also use the GUI to detach and reboot it by manually
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stopping and starting.
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#. Log in as root user when you boot for the first time after installation.
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#. Install and run the ``acpid`` service on the guest system to enable
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the virtual machine to reboot or shutdown an instance.
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Run the following commands inside the Fedora guest to install the
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ACPI service and configure it to start when the system boots:
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.. code-block:: console
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# yum install acpid
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# chkconfig acpid on
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#. Install ``cloud-init`` package inside the Fedora guest by adding
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the EPEL repo:
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The ``cloud-init`` package automatically fetches the public key
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from the metadata server and places the key in an account.
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.. code-block:: console
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# yum install http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
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# yum install cloud-init
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You can change the name of the account used by ``cloud-init``
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by editing the ``/etc/cloud/cloud.cfg`` file and adding a line with
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a different user. For example, to configure ``cloud-init`` to put the
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key in an account named admin, add this line to the configuration file:
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.. code-block:: console
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user: admin
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#. Disable the default ``zeroconf`` route for the instance to access
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the metadata service:
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.. code-block:: console
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# echo "NOZEROCONF=yes" >> /etc/sysconfig/network
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#. For the :command:`nova console-log` command to work properly on
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Fedora 20, you might need to add the following lines to
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the ``/boot/grub/menu.lst`` file:
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.. code-block:: console
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serial --unit=0 --speed=115200
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terminal --timeout=10 console serial
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# Edit the kernel line to add the console entries
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kernel ... console=tty0 console=ttyS0,115200n8
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#. Shut down the instance from inside the instance as a root user:
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.. code-block:: console
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# /sbin/shutdown -h now
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#. Clean up and remove MAC address details.
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The operating system records the MAC address of the virtual Ethernet
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card in locations such as ``/etc/sysconfig/network-scripts/ifcfg-eth0``
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and ``/etc/udev/rules.d/70-persistent-net.rules`` during the instance
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process. However, each time the image boots up, the virtual Ethernet
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card will have a different MAC address, so this information must be
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deleted from the configuration file.
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Use the :command:`virt-sysprep` utility. This performs various cleanup
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tasks such as removing the MAC address references.
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It will clean up a virtual machine image in place:
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.. code-block:: console
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# virt-sysprep -d fedora-20
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#. Undefine the domain since you no longer need to have this
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virtual machine image managed by libvirt:
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.. code-block:: console
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# virsh undefine fedora-20
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The underlying image file that you created with
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:command:`qemu-img create` is ready to be uploaded to the Image service.
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